/* ════════════════════════════════════════════════════════════════════════
   PREMIUM COURSE CARDS — shared between Instructor and Student surfaces.
   Aesthetic targets: Linear, Stripe, Notion, Framer, Kajabi.
   Dark-mode native, glassmorphism, neon purple/cyan accents, full-bleed
   cover images, premium shadow depth, hover lift + glow.
   No backend, no JS dependency — pure CSS.
   ──────────────────────────────────────────────────────────────────────── */

:root {
    --pc-bg-deep:      #030712;
    --pc-bg-surface:   rgba(16, 22, 46, .72);
    --pc-bg-surface-2: rgba(22, 28, 56, .55);
    --pc-glass-border: rgba(148, 163, 255, .12);
    --pc-glass-border-hot: rgba(168, 132, 255, .55);
    --pc-text:         #f4f6ff;
    --pc-text-muted:   #a4adcc;
    --pc-text-faint:   #6b7596;
    --pc-violet:       #8b5cf6;
    --pc-violet-2:     #a78bfa;
    --pc-purple:       #7c3aed;
    --pc-cyan:         #06b6d4;
    --pc-cyan-2:       #22d3ee;
    --pc-blue:         #3b82f6;
    --pc-pink:         #ec4899;
    --pc-amber:        #f59e0b;
    --pc-green:        #22c55e;
    --pc-red:          #ef4444;
    --pc-radius:       18px;
    --pc-radius-sm:    10px;
    --pc-radius-lg:    22px;
    --pc-shadow-soft:  0 14px 38px rgba(8, 12, 30, .42), 0 2px 6px rgba(8, 12, 30, .35);
    --pc-shadow-glow:  0 28px 80px rgba(124, 58, 237, .35), 0 0 60px rgba(34, 211, 238, .12);
    --pc-ease:         cubic-bezier(.22, 1, .36, 1);
}

/* ── Section header (My Courses) ─────────────────────────────────────── */
.pc-page-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1.25rem;
    margin: 0 0 1.6rem;
}
.pc-page-head-copy h1 {
    margin: 0;
    font-size: clamp(1.45rem, 2.4vw, 1.85rem);
    font-weight: 800;
    letter-spacing: -.01em;
    color: var(--pc-text);
}
.pc-page-head-copy p {
    margin: .25rem 0 0;
    color: var(--pc-text-muted);
    font-size: .9rem;
}
.pc-page-head-actions {
    display: flex;
    align-items: center;
    gap: .65rem;
    flex-wrap: wrap;
}

.pc-search {
    position: relative;
    min-width: 260px;
}
.pc-search input {
    width: 100%;
    height: 42px;
    padding: 0 .9rem 0 2.4rem;
    border-radius: 12px;
    border: 1px solid var(--pc-glass-border);
    background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.015));
    color: var(--pc-text);
    font-size: .88rem;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: border-color .18s var(--pc-ease), box-shadow .18s var(--pc-ease);
}
.pc-search input::placeholder { color: var(--pc-text-faint); }
.pc-search input:focus {
    outline: none;
    border-color: var(--pc-glass-border-hot);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, .14);
}
.pc-search i {
    position: absolute;
    left: .9rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--pc-text-faint);
    font-size: 1rem;
    pointer-events: none;
}

.pc-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    height: 42px;
    padding: 0 1.15rem;
    border: 1px solid rgba(168, 132, 255, .6);
    border-radius: 12px;
    background: linear-gradient(135deg, #7c3aed 0%, #6366f1 55%, #06b6d4 130%);
    color: #fff !important;
    -webkit-text-fill-color: #fff;
    font-weight: 700;
    font-size: .86rem;
    text-decoration: none;
    opacity: 1;
    box-shadow: 0 14px 32px rgba(124, 58, 237, .35), inset 0 1px 0 rgba(255,255,255,.18);
    transition: transform .18s var(--pc-ease), box-shadow .18s var(--pc-ease), filter .18s var(--pc-ease);
}
.pc-btn-primary :is(i, span, svg) { color: #fff !important; -webkit-text-fill-color: #fff; opacity: 1 !important; }
.pc-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 40px rgba(124, 58, 237, .42), inset 0 1px 0 rgba(255,255,255,.24);
    color: #fff !important;
    filter: brightness(1.05);
}

.pc-tab-row {
    display: flex;
    gap: .4rem;
    flex-wrap: wrap;
    margin: 0 0 1.5rem;
}
.pc-tab {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    height: 36px;
    padding: 0 .9rem;
    border-radius: 999px;
    border: 1px solid var(--pc-glass-border);
    background: var(--pc-bg-surface-2);
    color: var(--pc-text-muted);
    font-size: .8rem;
    font-weight: 700;
    text-decoration: none;
    transition: border-color .18s var(--pc-ease), color .18s var(--pc-ease), background .18s var(--pc-ease);
}
.pc-tab .pc-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 20px;
    padding: 0 6px;
    border-radius: 999px;
    background: rgba(148, 163, 255, .12);
    color: var(--pc-text);
    font-size: .68rem;
    font-weight: 800;
}
.pc-tab.is-active {
    color: #fff;
    background: linear-gradient(135deg, rgba(124, 58, 237, .35), rgba(6, 182, 212, .25));
    border-color: var(--pc-glass-border-hot);
    box-shadow: 0 10px 26px rgba(124, 58, 237, .28);
}
.pc-tab.is-active .pc-count {
    background: rgba(255, 255, 255, .18);
}

/* ── Grid ─────────────────────────────────────────────────────────────── */
.pc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.4rem;
}
.pc-grid--student {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.15rem;
}

/* ── Card shell ──────────────────────────────────────────────────────── */
.pc-card {
    position: relative;
    display: flex;
    flex-direction: column;
    isolation: isolate;
    overflow: hidden;
    border-radius: var(--pc-radius);
    border: 1px solid var(--pc-glass-border);
    background:
        radial-gradient(120% 60% at 0% 0%, rgba(124, 58, 237, .12), transparent 55%),
        radial-gradient(120% 60% at 100% 100%, rgba(6, 182, 212, .10), transparent 60%),
        linear-gradient(180deg, rgba(20, 24, 52, .85), rgba(12, 16, 38, .92));
    box-shadow: var(--pc-shadow-soft);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    text-decoration: none;
    color: inherit;
    transition: transform .25s var(--pc-ease), border-color .25s var(--pc-ease), box-shadow .25s var(--pc-ease);
}
.pc-card::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    border-radius: inherit;
    background: linear-gradient(120deg, rgba(255,255,255,.08), transparent 28%, transparent 72%, rgba(255,255,255,.04));
    opacity: .6;
    z-index: 1;
}
.pc-card:hover {
    transform: translateY(-4px);
    border-color: var(--pc-glass-border-hot);
    box-shadow: var(--pc-shadow-glow);
}

/* ── Cover image ─────────────────────────────────────────────────────── */
.pc-cover {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background:
        radial-gradient(circle at 30% 20%, rgba(56,189,248,.20), transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(168,85,247,.24), transparent 55%),
        linear-gradient(135deg, #0c1130, #1c1140 55%, #061d3a);
    z-index: 0;
}
.pc-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .55s var(--pc-ease), filter .35s var(--pc-ease);
}
.pc-card:hover .pc-cover img { transform: scale(1.045); filter: saturate(1.1); }
.pc-cover-placeholder {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: rgba(255,255,255,.55);
    font-size: 2.4rem;
}

/* ── Premium no-image fallback ──
   Renders initials + course icon over a deterministic gradient picked from
   CourseId. Looks intentional, not broken. Used by _CourseCoverFallback partial. */
.pc-cover-placeholder--premium {
    display: grid;
    place-items: center;
    overflow: hidden;
    color: #fff;
    isolation: isolate;
}
.pc-cover-placeholder--premium .pc-cover-initials {
    position: relative;
    z-index: 2;
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    font-weight: 900;
    letter-spacing: -.02em;
    line-height: 1;
    color: #fff;
    text-shadow: 0 4px 24px rgba(0, 0, 0, .35), 0 1px 0 rgba(255, 255, 255, .15);
    -webkit-text-fill-color: #fff;
    font-feature-settings: "ss01" on;
}
.pc-cover-placeholder--premium .pc-cover-iconbadge {
    position: absolute;
    bottom: .85rem;
    right: .85rem;
    z-index: 3;
    width: 32px;
    height: 32px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    background: rgba(8, 12, 30, .42);
    color: #fff;
    font-size: .9rem;
    border: 1px solid rgba(255, 255, 255, .25);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.pc-cover-placeholder--premium .pc-cover-glow {
    position: absolute;
    inset: -20%;
    z-index: 1;
    background:
        radial-gradient(circle at 28% 28%, rgba(255, 255, 255, .18), transparent 50%),
        radial-gradient(circle at 78% 80%, rgba(255, 255, 255, .10), transparent 55%);
    filter: blur(14px);
    pointer-events: none;
}
.pc-cover-placeholder--premium .pc-cover-pattern {
    position: absolute;
    inset: 0;
    z-index: 1;
    background-image:
        linear-gradient(45deg, rgba(255, 255, 255, .06) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, .06) 75%),
        linear-gradient(45deg, rgba(255, 255, 255, .06) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, .06) 75%);
    background-size: 36px 36px;
    background-position: 0 0, 18px 18px;
    opacity: .25;
    mix-blend-mode: overlay;
    pointer-events: none;
}

/* 6-tone palette — deterministic per CourseId so the same course always wears the same colour */
.pc-cover-placeholder--g0 { background: linear-gradient(135deg, #7c3aed 0%, #4f46e5 55%, #06b6d4 130%); }
.pc-cover-placeholder--g1 { background: linear-gradient(135deg, #db2777 0%, #7c3aed 55%, #4338ca 130%); }
.pc-cover-placeholder--g2 { background: linear-gradient(135deg, #0891b2 0%, #2563eb 55%, #7c3aed 130%); }
.pc-cover-placeholder--g3 { background: linear-gradient(135deg, #f59e0b 0%, #db2777 55%, #7c3aed 130%); }
.pc-cover-placeholder--g4 { background: linear-gradient(135deg, #059669 0%, #0891b2 55%, #4f46e5 130%); }
.pc-cover-placeholder--g5 { background: linear-gradient(135deg, #ea580c 0%, #db2777 55%, #6366f1 130%); }

/* Hide the legacy icon-only marker when we render premium variant inside its parent */
.pc-cover-placeholder--premium > i.bi { display: none; }

[data-theme="light"] .pc-cover-placeholder--premium .pc-cover-initials { text-shadow: 0 4px 18px rgba(15, 23, 42, .35); }
.pc-cover::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 38%, rgba(6, 9, 24, .72) 88%, rgba(6, 9, 24, .92));
    pointer-events: none;
    z-index: 1;
}

/* status badge — top-left */
.pc-status {
    position: absolute;
    top: .75rem;
    left: .75rem;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .3rem .65rem;
    border-radius: 999px;
    font-size: .65rem;
    font-weight: 900;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: #fff;
    border: 1px solid rgba(255,255,255,.18);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.pc-status::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 8px currentColor;
}
.pc-status--active {
    background: rgba(34, 197, 94, .18);
    color: #4ade80;
    border-color: rgba(34, 197, 94, .35);
}
.pc-status--draft {
    background: rgba(245, 158, 11, .18);
    color: #fbbf24;
    border-color: rgba(245, 158, 11, .35);
}
.pc-status--completed {
    background: rgba(34, 197, 94, .22);
    color: #4ade80;
    border-color: rgba(34, 197, 94, .4);
}
.pc-status--progress {
    background: rgba(6, 182, 212, .2);
    color: #67e8f9;
    border-color: rgba(6, 182, 212, .4);
}
.pc-status--not-started {
    background: rgba(148, 163, 255, .18);
    color: #c4b5fd;
    border-color: rgba(148, 163, 255, .35);
}

/* corner chip — top-right (e.g. progress %, bookmark) */
.pc-corner {
    position: absolute;
    top: .75rem;
    right: .75rem;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    height: 28px;
    padding: 0 .65rem;
    border-radius: 999px;
    background: rgba(8, 12, 30, .58);
    border: 1px solid rgba(255,255,255,.18);
    color: #fff;
    font-size: .72rem;
    font-weight: 800;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* ── Body ────────────────────────────────────────────────────────────── */
.pc-body {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: .9rem;
    padding: 1.15rem 1.2rem 1.2rem;
}
.pc-title {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.35;
    letter-spacing: -.005em;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.pc-desc {
    margin: 0;
    font-size: .8rem;
    color: var(--pc-text-muted);
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ── Metric strip (instructor cards) ─────────────────────────────────── */
.pc-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: .55rem;
    margin: .15rem 0 0;
}
.pc-metric {
    display: flex;
    flex-direction: column;
    gap: .15rem;
    padding: .55rem .6rem;
    border-radius: var(--pc-radius-sm);
    border: 1px solid rgba(148, 163, 255, .08);
    background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.015));
}
.pc-metric-label {
    font-size: .62rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--pc-text-faint);
    display: inline-flex;
    align-items: center;
    gap: .3rem;
}
.pc-metric-label i { font-size: .8rem; color: var(--pc-violet-2); }
.pc-metric-value {
    font-size: 1rem;
    font-weight: 800;
    color: var(--pc-text);
    line-height: 1.1;
}
.pc-metric--accent .pc-metric-label i { color: var(--pc-cyan-2); }
.pc-metric--gold  .pc-metric-label i { color: var(--pc-amber); }
.pc-metric--pink  .pc-metric-label i { color: var(--pc-pink); }
.pc-metric--green .pc-metric-label i { color: var(--pc-green); }

/* ── Instructor Courses V4 — equal-height cards, pinned actions ───────── */
/* Goal: identical card height regardless of title/description length.
   Grid stretches all cards in a row; body grows to fill; actions pin to bottom. */
.pc-grid--instructor {
    grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
    gap: 1.4rem;
}
.pc-card--equal { height: 100%; }
.pc-card--equal .pc-body { flex: 1 1 auto; }
.pc-card--equal .pc-actions:last-child { margin-top: auto; }
.pc-card--equal .pc-desc { -webkit-line-clamp: 3; }
.pc-card--equal .pc-metrics {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    align-items: stretch;
}
.pc-card--equal .pc-metric { min-height: 56px; justify-content: center; }

/* Stacked action layout — primary full-width, three secondary buttons, floating delete */
.pc-actions--stacked {
    display: flex;
    flex-direction: column;
    gap: .5rem;
}
.pc-actions--stacked > .pc-action--primary { width: 100%; }
.pc-actions-secondary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: .4rem;
}
.pc-actions-secondary .pc-action {
    padding: 0 .5rem;
    font-size: .74rem;
    min-width: 0;
}

/* Floating circular delete icon — positioned top-right of card cover */
.pc-card-delete-form {
    position: absolute;
    top: .75rem;
    right: .75rem;
    z-index: 3;
    margin: 0;
}
.pc-card-delete {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(239, 68, 68, .45);
    background: rgba(15, 8, 20, .58);
    color: #fda4af;
    cursor: pointer;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 8px 22px rgba(0, 0, 0, .35);
    transition: transform .15s var(--pc-ease), background .15s var(--pc-ease), color .15s var(--pc-ease), border-color .15s var(--pc-ease);
}
.pc-card-delete:hover {
    background: rgba(239, 68, 68, .85);
    border-color: rgba(239, 68, 68, .85);
    color: #fff;
    transform: translateY(-1px);
}
.pc-card-delete i { font-size: .95rem; }

/* Light-mode parity for the new pieces */
[data-theme="light"] .pc-card-delete {
    background: rgba(255, 255, 255, .9);
    color: #b91c1c;
    border-color: rgba(239, 68, 68, .4);
}
[data-theme="light"] .pc-card-delete:hover {
    background: #dc2626;
    color: #fff;
}

/* ── Progress bar ────────────────────────────────────────────────────── */
.pc-progress {
    display: flex;
    flex-direction: column;
    gap: .4rem;
}
.pc-progress-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: .72rem;
    color: var(--pc-text-muted);
}
.pc-progress-head strong { color: #fff; font-weight: 800; }
.pc-progress-track {
    position: relative;
    width: 100%;
    height: 7px;
    border-radius: 999px;
    background: rgba(148, 163, 255, .12);
    overflow: hidden;
}
.pc-progress-fill {
    position: absolute;
    inset: 0 auto 0 0;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--pc-cyan), var(--pc-violet), var(--pc-pink));
    box-shadow: 0 0 14px rgba(139, 92, 246, .55);
}
.pc-progress-fill--complete {
    background: linear-gradient(90deg, #22c55e, #4ade80);
    box-shadow: 0 0 14px rgba(74, 222, 128, .55);
}

/* ── Instructor mini profile ─────────────────────────────────────────── */
.pc-instructor {
    display: flex;
    align-items: center;
    gap: .55rem;
    margin: 0;
    font-size: .78rem;
    color: var(--pc-text-muted);
}
.pc-instructor-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--pc-purple), var(--pc-cyan));
    color: #fff;
    display: grid;
    place-items: center;
    font-size: .68rem;
    font-weight: 800;
    border: 1px solid rgba(255,255,255,.22);
    flex-shrink: 0;
}
.pc-instructor-name {
    color: var(--pc-text);
    font-weight: 700;
}
.pc-instructor-rating {
    display: inline-flex;
    align-items: center;
    gap: .25rem;
    margin-left: auto;
    color: var(--pc-amber);
    font-weight: 800;
    font-size: .78rem;
}
.pc-instructor-rating i { color: var(--pc-amber); }

/* ── Next-lesson teaser (student cards) ──────────────────────────────── */
.pc-next {
    display: flex;
    align-items: center;
    gap: .7rem;
    padding: .65rem .75rem;
    border-radius: var(--pc-radius-sm);
    border: 1px solid rgba(148, 163, 255, .12);
    background: linear-gradient(180deg, rgba(124, 58, 237, .12), rgba(6, 182, 212, .06));
    text-decoration: none;
    color: inherit;
}
.pc-next-icon {
    display: grid;
    place-items: center;
    width: 32px;
    height: 32px;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--pc-purple), var(--pc-cyan));
    color: #fff;
    font-size: .9rem;
    flex-shrink: 0;
}
.pc-next-copy {
    display: flex;
    flex-direction: column;
    gap: 1px;
    min-width: 0;
    flex: 1;
}
.pc-next-copy small {
    color: var(--pc-text-faint);
    font-size: .62rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .08em;
}
.pc-next-copy span {
    color: var(--pc-text);
    font-size: .8rem;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.pc-next-arrow {
    color: var(--pc-text-muted);
    margin-left: auto;
    flex-shrink: 0;
}

/* ── Action row ──────────────────────────────────────────────────────── */
.pc-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: .5rem;
}
.pc-actions--split {
    grid-template-columns: minmax(0, 1fr) auto;
}
.pc-actions--row {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
}
.pc-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    height: 38px;
    padding: 0 .85rem;
    border-radius: 10px;
    border: 1px solid var(--pc-glass-border);
    background: rgba(255,255,255,.03);
    color: var(--pc-text);
    font-size: .78rem;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: transform .15s var(--pc-ease), border-color .15s var(--pc-ease), background .15s var(--pc-ease), color .15s var(--pc-ease);
}
.pc-action:hover {
    border-color: var(--pc-glass-border-hot);
    background: rgba(255,255,255,.06);
    color: #fff;
}
.pc-action--primary {
    border-color: rgba(168, 132, 255, .6);
    background: linear-gradient(135deg, #6d28d9, #4f46e5 62%, #0891b2 140%);
    color: #fff !important;
    -webkit-text-fill-color: #fff;
    opacity: 1;
    box-shadow: 0 12px 28px rgba(124, 58, 237, .35), inset 0 1px 0 rgba(255,255,255,.16);
    text-shadow: 0 1px 1px rgba(15, 23, 42, .35);
}
.pc-action--primary:hover {
    color: #fff !important;
    -webkit-text-fill-color: #fff;
    transform: translateY(-1px);
    filter: brightness(1.06);
    box-shadow: 0 16px 36px rgba(124, 58, 237, .45), inset 0 1px 0 rgba(255,255,255,.22);
}
.pc-action--primary :is(i, span, svg) { color: #fff !important; opacity: 1 !important; }
.pc-action--primary, .pc-action--primary :is(i, span, svg) { -webkit-text-fill-color: #fff; }
.pc-action--ghost {
    background: transparent;
    color: var(--pc-text-muted);
}
.pc-action--danger {
    border-color: rgba(239, 68, 68, .35);
    color: #fda4af;
}
.pc-action--danger:hover {
    background: rgba(239, 68, 68, .12);
    border-color: rgba(239, 68, 68, .6);
    color: #fecaca;
}
.pc-action--icon {
    width: 38px;
    padding: 0;
}
.pc-action form { display: inline-flex; }
.pc-action-form { display: contents; }

/* ── Footer chip row (instructor) ────────────────────────────────────── */
.pc-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    margin: 0;
    padding-top: .15rem;
    border-top: 1px dashed rgba(148, 163, 255, .12);
}
.pc-foot-meta {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    font-size: .72rem;
    color: var(--pc-text-faint);
}
.pc-foot-meta i { color: var(--pc-violet-2); }

/* ── Empty state ─────────────────────────────────────────────────────── */
.pc-empty {
    padding: 3.5rem 2rem;
    text-align: center;
    border-radius: var(--pc-radius);
    border: 1px dashed rgba(148, 163, 255, .18);
    background:
        radial-gradient(120% 60% at 50% 0%, rgba(124, 58, 237, .12), transparent 60%),
        linear-gradient(180deg, rgba(20, 24, 52, .55), rgba(12, 16, 38, .72));
    color: var(--pc-text-muted);
}
.pc-empty-icon {
    display: grid;
    place-items: center;
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(124,58,237,.35), rgba(6,182,212,.25));
    color: #fff;
    font-size: 1.6rem;
    box-shadow: 0 16px 36px rgba(124, 58, 237, .35);
}
.pc-empty h3 { margin: 0 0 .35rem; color: #fff; font-size: 1.05rem; font-weight: 800; }
.pc-empty p { margin: 0 0 1.1rem; font-size: .85rem; }

/* ── Light-mode fallback (theme toggle) ──────────────────────────────── */
[data-theme="light"] .pc-card {
    background:
        linear-gradient(180deg, #ffffff, #f7f9ff);
    border-color: rgba(99, 102, 241, .14);
    box-shadow: 0 14px 38px rgba(99, 102, 241, .12), 0 2px 6px rgba(15, 23, 42, .05);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}
[data-theme="light"] .pc-card::before { opacity: .25; }
[data-theme="light"] .pc-title { color: #0f172a; }
[data-theme="light"] .pc-desc  { color: #475569; }
[data-theme="light"] .pc-metric {
    background: #f5f7fc;
    border-color: rgba(99, 102, 241, .08);
}
[data-theme="light"] .pc-metric-value { color: #0f172a; }
[data-theme="light"] .pc-metric-label { color: #64748b; }
[data-theme="light"] .pc-action {
    border-color: rgba(99, 102, 241, .18);
    background: #fff;
    color: #1e1b4b;
}
[data-theme="light"] .pc-action:hover {
    border-color: rgba(99, 102, 241, .42);
    background: #f5f7fc;
}
[data-theme="light"] .pc-action--primary {
    color: #fff !important;
    background: linear-gradient(135deg, #6d28d9, #4f46e5 62%, #0e7490 140%);
}
[data-theme="light"] .pc-action--primary:hover { color: #fff !important; }
[data-theme="light"] .pc-foot { border-top-color: rgba(99, 102, 241, .14); }
[data-theme="light"] .pc-next {
    background: linear-gradient(180deg, rgba(124,58,237,.06), rgba(6,182,212,.04));
    border-color: rgba(99, 102, 241, .14);
}
[data-theme="light"] .pc-next-copy span { color: #1e1b4b; }
[data-theme="light"] .pc-page-head-copy h1 { color: #0f172a; }
[data-theme="light"] .pc-page-head-copy p,
[data-theme="light"] .pc-instructor { color: #475569; }
[data-theme="light"] .pc-instructor-name { color: #1e1b4b; }
[data-theme="light"] .pc-search input {
    background: #fff;
    border-color: rgba(99, 102, 241, .18);
    color: #0f172a;
}
[data-theme="light"] .pc-search input::placeholder { color: #94a3b8; }
[data-theme="light"] .pc-tab {
    background: #fff;
    border-color: rgba(99, 102, 241, .14);
    color: #475569;
}

/* ── Responsive ──────────────────────────────────────────────────────── */
@media (max-width: 880px) {
    .pc-page-head { flex-direction: column; align-items: stretch; }
    .pc-page-head-actions { width: 100%; }
    .pc-search { flex: 1; min-width: 0; }
    .pc-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }
    .pc-grid--student { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
    .pc-grid--instructor { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
}

@media (max-width: 540px) {
    .pc-body { padding: .95rem 1rem 1.05rem; }
    .pc-metrics { grid-template-columns: repeat(2, 1fr); }
    .pc-actions--row .pc-action { flex: 1 1 100%; }
    .pc-status { font-size: .58rem; padding: .25rem .55rem; }
    .pc-grid--instructor { grid-template-columns: 1fr; }
    .pc-actions-secondary { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    .pc-card, .pc-cover img, .pc-action, .pc-btn-primary { transition: none !important; }
    .pc-card:hover { transform: none; }
    .pc-card:hover .pc-cover img { transform: none; }
}

/* ════════════════════════════════════════════════════════════════════════
   COURSE DETAILS V2 — hero, timeline, lesson cards, progress ring, chips.
   Used by Instructor and Student course detail surfaces.
   ──────────────────────────────────────────────────────────────────────── */

/* ── Cinematic hero ─────────────────────────────────────────────────── */
.pc-hero {
    position: relative;
    isolation: isolate;
    border-radius: var(--pc-radius-lg);
    overflow: hidden;
    border: 1px solid var(--pc-glass-border);
    background:
        radial-gradient(circle at 12% 18%, rgba(124, 58, 237, .22), transparent 50%),
        radial-gradient(circle at 88% 82%, rgba(6, 182, 212, .18), transparent 60%),
        linear-gradient(135deg, #0c1130 0%, #1a1342 55%, #061d3a 100%);
    color: #fff;
    margin: 0 0 2rem;
}
.pc-hero-media {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}
.pc-hero-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    opacity: .78;
}
.pc-hero-media::before,
.pc-hero-media::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.pc-hero-media::before {
    background:
        linear-gradient(90deg, rgba(2, 6, 23, .96) 0%, rgba(2, 6, 23, .9) 34%, rgba(2, 6, 23, .62) 62%, rgba(2, 6, 23, .22) 100%);
    z-index: 1;
}
.pc-hero-media::after {
    background:
        linear-gradient(180deg, rgba(3, 7, 18, .34) 0%, rgba(3, 7, 18, .52) 58%, rgba(3, 7, 18, .92) 100%),
        radial-gradient(circle at 18% 48%, rgba(15, 23, 42, .58), transparent 52%);
    z-index: 2;
}
.pc-hero-inner {
    position: relative;
    z-index: 3;
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 2rem;
    align-items: center;
    padding: 2.4rem 2.2rem;
    min-height: 320px;
}
.pc-hero-copy {
    position: relative;
    z-index: 4;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 68ch;
}
.pc-hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    align-self: flex-start;
    padding: .35rem .8rem;
    border-radius: 999px;
    border: 1px solid rgba(168, 132, 255, .35);
    background: rgba(124, 58, 237, .14);
    color: #d8b4fe;
    font-size: .68rem;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}
.pc-hero-title {
    margin: 0;
    font-size: clamp(1.8rem, 3.4vw, 2.7rem);
    font-weight: 900;
    line-height: 1.08;
    color: #fff;
    letter-spacing: -.015em;
    text-shadow: 0 3px 22px rgba(0, 0, 0, .72), 0 1px 2px rgba(0, 0, 0, .75);
}
.pc-hero-desc {
    margin: 0;
    color: rgba(248, 250, 252, .9);
    font-size: 1rem;
    line-height: 1.65;
    max-width: 56ch;
    text-shadow: 0 2px 14px rgba(0, 0, 0, .66), 0 1px 2px rgba(0, 0, 0, .72);
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
    line-clamp: 4;
    overflow: hidden;
}
.pc-hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
    margin-top: .25rem;
}
.pc-hero-tag {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .3rem .7rem;
    border-radius: 999px;
    background: rgba(148, 163, 255, .12);
    border: 1px solid rgba(148, 163, 255, .14);
    color: #c7cde6;
    font-size: .72rem;
    font-weight: 700;
}

/* hero stats — floating glass strip */
.pc-hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
    gap: .8rem;
    margin: 1.6rem 0 0;
    padding: 1rem;
    border-radius: var(--pc-radius);
    border: 1px solid var(--pc-glass-border);
    background: rgba(8, 12, 30, .55);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}
.pc-hero-stat {
    display: flex;
    flex-direction: column;
    gap: .25rem;
    padding: .55rem .6rem;
    border-radius: 12px;
    background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.015));
    border: 1px solid rgba(148, 163, 255, .08);
}
.pc-hero-stat-label {
    font-size: .62rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--pc-text-faint);
    display: inline-flex;
    align-items: center;
    gap: .35rem;
}
.pc-hero-stat-label i { color: var(--pc-violet-2); font-size: .85rem; }
.pc-hero-stat-value {
    font-size: 1.25rem;
    font-weight: 900;
    color: #fff;
    line-height: 1.1;
}
.pc-hero-stat--gold .pc-hero-stat-label i { color: var(--pc-amber); }
.pc-hero-stat--cyan .pc-hero-stat-label i { color: var(--pc-cyan-2); }
.pc-hero-stat--pink .pc-hero-stat-label i { color: var(--pc-pink); }
.pc-hero-stat--green .pc-hero-stat-label i { color: var(--pc-green); }

.pc-hero-cover {
    position: relative;
    border-radius: var(--pc-radius);
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border: 1px solid var(--pc-glass-border-hot);
    box-shadow: 0 30px 80px rgba(8, 12, 30, .65), 0 0 80px rgba(124, 58, 237, .35);
}
.pc-hero-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.pc-hero-cover-placeholder {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: rgba(255,255,255,.5);
    font-size: 3rem;
}

/* Premium hero-cover fallback — same gradient palette as card fallback,
   but at hero scale (4:3, larger initials). */
.pc-hero-cover-fallback {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    overflow: hidden;
    isolation: isolate;
    color: #fff;
}
.pc-hero-cover-fallback .pc-cover-initials {
    position: relative;
    z-index: 2;
    font-size: clamp(3.6rem, 7vw, 5.4rem);
    font-weight: 900;
    letter-spacing: -.02em;
    line-height: 1;
    color: #fff;
    -webkit-text-fill-color: #fff;
    text-shadow: 0 6px 36px rgba(0, 0, 0, .42), 0 1px 0 rgba(255, 255, 255, .15);
}
.pc-hero-cover-fallback .pc-cover-iconbadge {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    z-index: 3;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: rgba(8, 12, 30, .42);
    color: #fff;
    font-size: 1.15rem;
    border: 1px solid rgba(255, 255, 255, .28);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
.pc-hero-cover-fallback .pc-cover-glow {
    position: absolute; inset: -20%; z-index: 1;
    background:
        radial-gradient(circle at 28% 28%, rgba(255, 255, 255, .22), transparent 50%),
        radial-gradient(circle at 78% 80%, rgba(255, 255, 255, .12), transparent 55%);
    filter: blur(18px); pointer-events: none;
}
.pc-hero-cover-fallback .pc-cover-pattern {
    position: absolute; inset: 0; z-index: 1;
    background-image:
        linear-gradient(45deg, rgba(255,255,255,.06) 25%, transparent 25%, transparent 75%, rgba(255,255,255,.06) 75%),
        linear-gradient(45deg, rgba(255,255,255,.06) 25%, transparent 25%, transparent 75%, rgba(255,255,255,.06) 75%);
    background-size: 44px 44px; background-position: 0 0, 22px 22px;
    opacity: .25; mix-blend-mode: overlay; pointer-events: none;
}

.pc-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .55rem;
    margin: 1.3rem 0 0;
}
.pc-hero-actions .pc-action,
.pc-hero-actions .pc-btn-primary { height: 44px; font-size: .82rem; }

@media (max-width: 880px) {
    .pc-hero-inner { grid-template-columns: 1fr; padding: 1.6rem 1.4rem 1.8rem; }
    .pc-hero-cover { display: none; }
    .pc-hero-media::before {
        background: linear-gradient(90deg, rgba(2, 6, 23, .96) 0%, rgba(2, 6, 23, .9) 58%, rgba(2, 6, 23, .54) 100%);
    }
    .pc-hero-copy { max-width: 100%; }
}

/* ── Vertical learning timeline ─────────────────────────────────────── */
.pc-section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    margin: 0 0 1.1rem;
    flex-wrap: wrap;
}
.pc-section-head h2 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--pc-text-muted);
    display: inline-flex;
    align-items: center;
    gap: .55rem;
}
.pc-section-head h2 .pc-section-index {
    display: inline-grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--pc-purple), var(--pc-cyan));
    color: #fff;
    font-size: .78rem;
    font-weight: 900;
    letter-spacing: 0;
    text-transform: none;
}
.pc-section-head .pc-action,
.pc-section-head .pc-btn-primary { margin-left: auto; }

.pc-timeline {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 0 0 2rem;
    padding-left: 36px;
}
.pc-timeline::before {
    content: "";
    position: absolute;
    left: 14px;
    top: 18px;
    bottom: 18px;
    width: 2px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--pc-purple), var(--pc-cyan));
    opacity: .55;
}
.pc-timeline-node {
    position: relative;
}
.pc-timeline-dot {
    position: absolute;
    left: -36px;
    top: 18px;
    display: grid;
    place-items: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #fff 0%, transparent 60%), linear-gradient(135deg, var(--pc-purple), var(--pc-cyan));
    color: #fff;
    font-size: .72rem;
    font-weight: 900;
    border: 2px solid rgba(255,255,255,.18);
    box-shadow: 0 0 0 5px rgba(124, 58, 237, .12), 0 10px 22px rgba(124, 58, 237, .45);
}
.pc-timeline-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--pc-radius);
    border: 1px solid var(--pc-glass-border);
    background:
        linear-gradient(180deg, rgba(20, 24, 52, .85), rgba(12, 16, 38, .92));
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transition: border-color .2s var(--pc-ease), box-shadow .2s var(--pc-ease), transform .2s var(--pc-ease);
}
.pc-timeline-card:hover {
    border-color: var(--pc-glass-border-hot);
    box-shadow: 0 20px 40px rgba(124, 58, 237, .18);
}

.pc-timeline-head {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.15rem;
    cursor: pointer;
    user-select: none;
}
.pc-timeline-icon {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(124,58,237,.35), rgba(6,182,212,.25));
    color: #fff;
    font-size: 1.1rem;
    flex-shrink: 0;
    border: 1px solid var(--pc-glass-border);
}
.pc-timeline-info {
    display: flex;
    flex-direction: column;
    gap: .15rem;
    min-width: 0;
    flex: 1;
}
.pc-timeline-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.25;
}
.pc-timeline-meta {
    display: flex;
    flex-wrap: wrap;
    gap: .85rem;
    font-size: .72rem;
    color: var(--pc-text-faint);
}
.pc-timeline-meta span {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
}
.pc-timeline-meta i { color: var(--pc-violet-2); }
.pc-timeline-tail {
    display: flex;
    align-items: center;
    gap: .8rem;
    flex-shrink: 0;
}
.pc-timeline-chev {
    color: var(--pc-text-muted);
    font-size: 1rem;
    transition: transform .2s var(--pc-ease);
}
details[open] .pc-timeline-chev { transform: rotate(90deg); }
.pc-timeline-body {
    padding: .25rem 1.15rem 1.1rem;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}

/* ── Lesson card row ─────────────────────────────────────────────────── */
.pc-lesson {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: .9rem;
    padding: .75rem .95rem;
    border-radius: 12px;
    border: 1px solid rgba(148, 163, 255, .1);
    background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.01));
    text-decoration: none;
    color: var(--pc-text);
    transition: background .15s var(--pc-ease), border-color .15s var(--pc-ease), transform .15s var(--pc-ease);
}
.pc-lesson:hover {
    background: linear-gradient(180deg, rgba(124,58,237,.10), rgba(6,182,212,.05));
    border-color: var(--pc-glass-border-hot);
    color: #fff;
    transform: translateX(2px);
}
.pc-lesson-icon {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(124,58,237,.3), rgba(6,182,212,.18));
    color: #fff;
    font-size: 1rem;
    flex-shrink: 0;
    border: 1px solid var(--pc-glass-border);
}
.pc-lesson-body {
    display: flex;
    flex-direction: column;
    gap: .2rem;
    min-width: 0;
}
.pc-lesson-title {
    margin: 0;
    font-size: .9rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.pc-lesson-meta {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
    font-size: .68rem;
    color: var(--pc-text-faint);
}
.pc-lesson-meta span { display: inline-flex; align-items: center; gap: .25rem; }
.pc-lesson-tail {
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    flex-shrink: 0;
}
.pc-lesson-chev {
    color: var(--pc-text-muted);
    font-size: .85rem;
}
.pc-lesson--locked {
    opacity: .68;
    cursor: not-allowed;
}
.pc-lesson--locked:hover { transform: none; }
.pc-lesson--locked .pc-lesson-icon { background: rgba(148, 163, 255, .1); color: var(--pc-text-faint); }
.pc-lesson--done {
    border-color: rgba(34, 197, 94, .28);
    background: linear-gradient(180deg, rgba(34, 197, 94, .08), rgba(34, 197, 94, .025));
}
.pc-lesson--done .pc-lesson-icon { background: linear-gradient(135deg, #22c55e, #16a34a); }

/* Type / state pills used inside lessons */
.pc-pill {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    padding: .2rem .55rem;
    border-radius: 999px;
    font-size: .62rem;
    font-weight: 800;
    letter-spacing: .06em;
    text-transform: uppercase;
    border: 1px solid;
}
.pc-pill--video  { color: #93c5fd; border-color: rgba(56, 189, 248, .35); background: rgba(56, 189, 248, .12); }
.pc-pill--doc    { color: #c4b5fd; border-color: rgba(168, 132, 255, .35); background: rgba(168, 132, 255, .12); }
.pc-pill--quiz   { color: #fbbf24; border-color: rgba(245, 158, 11, .35); background: rgba(245, 158, 11, .12); }
.pc-pill--task   { color: #f0abfc; border-color: rgba(236, 72, 153, .35); background: rgba(236, 72, 153, .12); }
.pc-pill--done   { color: #4ade80; border-color: rgba(34, 197, 94, .4);  background: rgba(34, 197, 94, .14); }
.pc-pill--prog   { color: #67e8f9; border-color: rgba(6, 182, 212, .4);  background: rgba(6, 182, 212, .12); }
.pc-pill--idle   { color: #c4b5fd; border-color: rgba(148, 163, 255, .35); background: rgba(148, 163, 255, .12); }
.pc-pill--locked { color: var(--pc-text-faint); border-color: rgba(148, 163, 255, .18); background: rgba(148, 163, 255, .06); }

/* ── Progress ring ───────────────────────────────────────────────────── */
.pc-ring {
    position: relative;
    width: 220px;
    height: 220px;
    margin: 0 auto;
}
.pc-ring svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}
.pc-ring-track  { fill: none; stroke: rgba(148, 163, 255, .18); stroke-width: 12; }
.pc-ring-fill   { fill: none; stroke: url(#pcRingGrad); stroke-width: 12; stroke-linecap: round; filter: drop-shadow(0 0 12px rgba(124, 58, 237, .55)); transition: stroke-dasharray .8s var(--pc-ease); }
.pc-ring-center {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .15rem;
    text-align: center;
}
.pc-ring-value { font-size: 2.4rem; font-weight: 900; color: #fff; line-height: 1; }
.pc-ring-label { font-size: .68rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--pc-text-muted); }

.pc-progress-hero {
    display: grid;
    grid-template-columns: minmax(220px, .9fr) minmax(0, 1fr);
    gap: 1.6rem;
    align-items: center;
    padding: 1.6rem;
    border-radius: var(--pc-radius-lg);
    border: 1px solid var(--pc-glass-border);
    background:
        radial-gradient(circle at 0% 0%, rgba(124,58,237,.15), transparent 50%),
        linear-gradient(180deg, rgba(20, 24, 52, .85), rgba(12, 16, 38, .92));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    margin: 0 0 2rem;
}
.pc-progress-hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: .75rem;
}
@media (max-width: 720px) {
    .pc-progress-hero { grid-template-columns: 1fr; }
    .pc-ring { width: 180px; height: 180px; }
    .pc-ring-value { font-size: 2rem; }
}

/* ── Status / chip messages (certificate, completion request etc) ────── */
.pc-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
    margin: 1rem 0 0;
}
.pc-chip {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .55rem .9rem;
    border-radius: 12px;
    font-size: .82rem;
    font-weight: 700;
    border: 1px solid;
}
.pc-chip i { font-size: 1.05rem; }
.pc-chip--info     { color: #93c5fd; border-color: rgba(56,189,248,.35); background: rgba(56,189,248,.10); }
.pc-chip--warn     { color: #fbbf24; border-color: rgba(245,158,11,.40); background: rgba(245,158,11,.10); }
.pc-chip--danger   { color: #fda4af; border-color: rgba(239,68,68,.40);  background: rgba(239,68,68,.10); }
.pc-chip--success  { color: #4ade80; border-color: rgba(34,197,94,.40);  background: rgba(34,197,94,.10); }
.pc-chip--muted    { color: var(--pc-text-muted); border-color: rgba(148, 163, 255, .18); background: rgba(148, 163, 255, .06); }
.pc-chip-note {
    width: 100%;
    margin-top: .35rem;
    padding: .55rem .75rem;
    border-radius: 10px;
    background: rgba(8, 12, 30, .55);
    color: var(--pc-text-muted);
    font-size: .8rem;
    line-height: 1.45;
    border-left: 3px solid currentColor;
}

/* ── Skeleton loader ────────────────────────────────────────────────── */
.pc-skel {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    background: linear-gradient(90deg, rgba(148, 163, 255, .08) 0%, rgba(148, 163, 255, .16) 50%, rgba(148, 163, 255, .08) 100%);
    background-size: 200% 100%;
    animation: pc-skel-shimmer 1.4s linear infinite;
}
@keyframes pc-skel-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
.pc-skel-card {
    border-radius: var(--pc-radius);
    border: 1px solid var(--pc-glass-border);
    background: linear-gradient(180deg, rgba(20, 24, 52, .55), rgba(12, 16, 38, .65));
    padding: 1.05rem 1.15rem 1.2rem;
    display: flex;
    flex-direction: column;
    gap: .8rem;
}
.pc-skel-cover { aspect-ratio: 16/9; border-radius: 12px; }
.pc-skel-line { height: 12px; border-radius: 6px; }
.pc-skel-line--lg { height: 18px; }
.pc-skel-line--xl { height: 26px; }
.pc-skel-line--sm { height: 9px; }
.pc-skel-line--60 { width: 60%; }
.pc-skel-line--40 { width: 40%; }
.pc-skel-line--80 { width: 80%; }
.pc-skel-row {
    display: flex;
    align-items: center;
    gap: .6rem;
}
.pc-skel-avatar { width: 32px; height: 32px; border-radius: 50%; flex-shrink: 0; }
@media (prefers-reduced-motion: reduce) {
    .pc-skel { animation: none; }
}

/* ── Empty state, premium tier ───────────────────────────────────────── */
.es,
.es--compact {
    border-radius: var(--pc-radius-lg);
    border: 1px dashed rgba(148, 163, 255, .22);
    background:
        radial-gradient(120% 60% at 50% 0%, rgba(124, 58, 237, .14), transparent 60%),
        linear-gradient(180deg, rgba(20, 24, 52, .55), rgba(12, 16, 38, .82));
    padding: 3rem 1.6rem;
    text-align: center;
    color: var(--pc-text-muted);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}
.es--compact { padding: 1.6rem 1rem; }
.es .es-icon {
    display: grid;
    place-items: center;
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(124,58,237,.45), rgba(6,182,212,.32));
    color: #fff;
    font-size: 1.8rem;
    box-shadow: 0 18px 40px rgba(124, 58, 237, .42);
}
.es .es-title { margin: 0 0 .35rem; color: #fff; font-size: 1.08rem; font-weight: 800; }
.es .es-desc  { margin: 0 0 1.1rem; font-size: .88rem; max-width: 44ch; margin-left: auto; margin-right: auto; }
.es .es-cta {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    height: 42px;
    padding: 0 1.15rem;
    border-radius: 12px;
    background: linear-gradient(135deg, #7c3aed, #6366f1 60%, #06b6d4 130%);
    color: #fff !important;
    font-weight: 800;
    font-size: .85rem;
    text-decoration: none;
    border: 1px solid rgba(168, 132, 255, .6);
    box-shadow: 0 14px 32px rgba(124, 58, 237, .35);
}
.es .es-cta:hover { filter: brightness(1.06); }
.es-secondary {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    margin-left: .65rem;
    color: var(--pc-text-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: .85rem;
}
.es-secondary:hover { color: #fff; }

[data-theme="light"] .es {
    background: linear-gradient(180deg, #ffffff, #f5f7fc);
    border-color: rgba(99, 102, 241, .18);
    color: #475569;
}
[data-theme="light"] .es .es-title { color: #0f172a; }
[data-theme="light"] .pc-hero { color: #fff; background: #0f172a; border-color: rgba(99, 102, 241, .14); }
[data-theme="light"] .pc-hero-title { color: #fff; }
[data-theme="light"] .pc-hero-desc { color: rgba(248, 250, 252, .9); }
[data-theme="light"] .pc-hero-media img { opacity: .78; }
[data-theme="light"] .pc-timeline-card {
    background: #ffffff;
    border-color: rgba(99, 102, 241, .12);
}
[data-theme="light"] .pc-timeline-title { color: #0f172a; }
[data-theme="light"] .pc-lesson {
    background: #f5f7fc;
    border-color: rgba(99, 102, 241, .12);
    color: #1e1b4b;
}
[data-theme="light"] .pc-lesson-title { color: #0f172a; }
[data-theme="light"] .pc-progress-hero {
    background: #ffffff;
    border-color: rgba(99, 102, 241, .14);
}
[data-theme="light"] .pc-ring-value { color: #0f172a; }

/* ════════════════════════════════════════════════════════════════════════
   STUDENTS ROSTER V2 — table + card hybrid with progress rings,
   status pills, online dot, search + sort + filter. Used by the
   Instructor → Course → Students surface.
   ──────────────────────────────────────────────────────────────────────── */

.pc-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .65rem;
    margin: 0 0 1rem;
}
.pc-toolbar .pc-search { flex: 1 1 240px; min-width: 200px; }
.pc-toolbar select.pc-select {
    height: 42px;
    padding: 0 2rem 0 .85rem;
    border-radius: 12px;
    border: 1px solid var(--pc-glass-border);
    background:
        linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.015))
        no-repeat right .65rem center / 12px;
    color: var(--pc-text);
    font-size: .82rem;
    font-weight: 700;
    appearance: none;
    -webkit-appearance: none;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    cursor: pointer;
}
.pc-toolbar select.pc-select:focus {
    outline: none;
    border-color: var(--pc-glass-border-hot);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, .14);
}

/* Roster table card */
.pc-roster {
    border-radius: var(--pc-radius-lg);
    border: 1px solid var(--pc-glass-border);
    background: linear-gradient(180deg, rgba(20, 24, 52, .85), rgba(12, 16, 38, .92));
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    overflow: hidden;
}
.pc-roster-head,
.pc-roster-row {
    display: grid;
    grid-template-columns: minmax(0, 2.4fr) minmax(0, 1.4fr) minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr) auto;
    align-items: center;
    gap: 1rem;
    padding: .85rem 1.15rem;
}
.pc-roster-head {
    border-bottom: 1px solid var(--pc-glass-border);
    background: rgba(8, 12, 30, .42);
    color: var(--pc-text-faint);
    font-size: .62rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .12em;
}
.pc-roster-row {
    border-bottom: 1px solid rgba(148, 163, 255, .08);
    color: var(--pc-text);
    font-size: .82rem;
    transition: background .15s var(--pc-ease);
}
.pc-roster-row:last-child { border-bottom: 0; }
.pc-roster-row:hover { background: rgba(124, 58, 237, .07); }

.pc-roster-student {
    display: flex;
    align-items: center;
    gap: .75rem;
    min-width: 0;
}
.pc-roster-avatar {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    background: linear-gradient(135deg, var(--pc-purple), var(--pc-cyan));
    color: #fff;
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: .72rem;
    flex-shrink: 0;
    border: 1px solid rgba(255,255,255,.18);
}
.pc-roster-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.pc-roster-avatar [hidden] { display: none !important; }
.pc-online-dot {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid #0a0e22;
    background: var(--pc-text-faint);
}
.pc-online-dot.is-online {
    background: #22c55e;
    box-shadow: 0 0 8px rgba(34, 197, 94, .8);
}

.pc-roster-id {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}
.pc-roster-name {
    margin: 0;
    font-size: .9rem;
    font-weight: 800;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.pc-roster-handle {
    margin: 0;
    font-size: .72rem;
    color: var(--pc-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pc-roster-cell-progress {
    display: flex;
    align-items: center;
    gap: .65rem;
}
.pc-mini-ring {
    position: relative;
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}
.pc-mini-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.pc-mini-ring-track { fill: none; stroke: rgba(148, 163, 255, .18); stroke-width: 4; }
.pc-mini-ring-fill  { fill: none; stroke: url(#pcRingGrad); stroke-width: 4; stroke-linecap: round; }
.pc-mini-ring-value {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: #fff;
    font-size: .58rem;
    font-weight: 900;
}
.pc-roster-progress-bar {
    flex: 1;
    min-width: 60px;
    height: 6px;
    border-radius: 999px;
    background: rgba(148, 163, 255, .15);
    overflow: hidden;
}
.pc-roster-progress-bar > span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--pc-cyan), var(--pc-violet));
}
.pc-roster-progress-text {
    color: #fff;
    font-weight: 800;
    font-size: .78rem;
    min-width: 36px;
    text-align: right;
}

.pc-roster-quiz {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    font-weight: 700;
    color: #fff;
}
.pc-roster-quiz i { color: var(--pc-amber); }

.pc-roster-time {
    color: var(--pc-text-muted);
    font-size: .78rem;
    white-space: nowrap;
}

.pc-roster-actions {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
}
.pc-icon-btn {
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    border: 1px solid var(--pc-glass-border);
    background: rgba(255,255,255,.03);
    color: var(--pc-text-muted);
    text-decoration: none;
    cursor: pointer;
    transition: border-color .15s var(--pc-ease), background .15s var(--pc-ease), color .15s var(--pc-ease);
}
.pc-icon-btn:hover {
    border-color: var(--pc-glass-border-hot);
    background: rgba(124, 58, 237, .12);
    color: #fff;
}

/* Mobile — collapse columns into stacked cards */
@media (max-width: 820px) {
    .pc-roster-head { display: none; }
    .pc-roster-row {
        grid-template-columns: 1fr;
        gap: .65rem;
        padding: 1rem;
        border-bottom: 1px solid rgba(148, 163, 255, .12);
    }
    .pc-roster-cell-label {
        display: inline-flex;
        align-items: center;
        gap: .4rem;
        font-size: .62rem;
        font-weight: 800;
        color: var(--pc-text-faint);
        text-transform: uppercase;
        letter-spacing: .1em;
        margin-right: .55rem;
    }
    .pc-roster-cell {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: .5rem;
    }
    .pc-roster-actions { justify-content: flex-end; }
}

/* Status pills reused from pc-status* but with extra "request" variants */
.pc-roster-status {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .25rem .65rem;
    border-radius: 999px;
    font-size: .65rem;
    font-weight: 800;
    border: 1px solid;
    letter-spacing: .04em;
    text-transform: uppercase;
}
.pc-roster-status--none     { color: var(--pc-text-muted); border-color: rgba(148, 163, 255, .25); background: rgba(148, 163, 255, .08); }
.pc-roster-status--pending  { color: #fbbf24; border-color: rgba(245, 158, 11, .35); background: rgba(245, 158, 11, .12); }
.pc-roster-status--approved { color: #4ade80; border-color: rgba(34, 197, 94, .4);   background: rgba(34, 197, 94, .12); }
.pc-roster-status--rejected { color: #fda4af; border-color: rgba(239, 68, 68, .4);   background: rgba(239, 68, 68, .12); }
.pc-roster-status--at-risk  { color: #fb7185; border-color: rgba(244, 63, 94, .4);   background: rgba(244, 63, 94, .12); }
.pc-roster-status--active   { color: #4ade80; border-color: rgba(34, 197, 94, .4);   background: rgba(34, 197, 94, .12); }
.pc-roster-status--excel    { color: #f0abfc; border-color: rgba(236, 72, 153, .4);  background: rgba(236, 72, 153, .12); }

/* Filtered-out via JS */
.pc-roster-row[hidden] { display: none !important; }

[data-theme="light"] .pc-roster {
    background: #ffffff;
    border-color: rgba(99, 102, 241, .12);
}
[data-theme="light"] .pc-roster-head { background: #f5f7fc; color: #475569; }
[data-theme="light"] .pc-roster-row { color: #1e1b4b; border-bottom-color: rgba(99, 102, 241, .08); }
[data-theme="light"] .pc-roster-row:hover { background: rgba(124, 58, 237, .04); }
[data-theme="light"] .pc-roster-name { color: #0f172a; }
[data-theme="light"] .pc-roster-quiz { color: #0f172a; }
[data-theme="light"] .pc-toolbar select.pc-select {
    background: #fff;
    color: #0f172a;
    border-color: rgba(99, 102, 241, .18);
}
[data-theme="light"] .pc-online-dot { border-color: #fff; }

/* ════════════════════════════════════════════════════════════════════════
   DASHBOARD V4 OVERLAY — additive enhancements to the existing
   .id-banner / .id-kpi / .id-card classes so the dashboard reads like
   a SaaS command center without churning the view markup.
   Targets dark mode (the dashboard's primary theme).
   ──────────────────────────────────────────────────────────────────────── */

body.area-instructor .id-banner {
    border: 1px solid var(--pc-glass-border);
    background:
        radial-gradient(120% 60% at 0% 0%, rgba(124, 58, 237, .22), transparent 55%),
        radial-gradient(120% 60% at 100% 100%, rgba(6, 182, 212, .16), transparent 60%),
        linear-gradient(180deg, rgba(20, 24, 52, .85), rgba(12, 16, 38, .92)) !important;
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    box-shadow: 0 24px 64px rgba(8, 12, 30, .55), 0 0 60px rgba(124, 58, 237, .18);
}
body.area-instructor .id-banner .id-greeting-name {
    background: linear-gradient(120deg, #fff 0%, #c4b5fd 50%, #67e8f9 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -.015em;
}
body.area-instructor .id-banner-btn-primary {
    background: linear-gradient(135deg, #7c3aed 0%, #6366f1 55%, #06b6d4 130%) !important;
    border-color: rgba(168, 132, 255, .6) !important;
    box-shadow: 0 14px 32px rgba(124, 58, 237, .35), inset 0 1px 0 rgba(255,255,255,.18);
    color: #fff !important;
}
body.area-instructor .id-banner-btn-primary:hover { filter: brightness(1.06); }
body.area-instructor .id-banner-btn-ghost {
    background: rgba(255,255,255,.05) !important;
    border-color: var(--pc-glass-border) !important;
    color: var(--pc-text) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
body.area-instructor .id-banner-btn-ghost:hover {
    border-color: var(--pc-glass-border-hot) !important;
    background: rgba(255,255,255,.08) !important;
}

body.area-instructor .id-kpi-grid {
    gap: 1.05rem;
}
body.area-instructor .id-kpi {
    position: relative;
    isolation: isolate;
    border: 1px solid var(--pc-glass-border) !important;
    background:
        linear-gradient(180deg, rgba(20, 24, 52, .85), rgba(12, 16, 38, .92)) !important;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transition: transform .22s var(--pc-ease), border-color .22s var(--pc-ease), box-shadow .22s var(--pc-ease);
    overflow: hidden;
}
body.area-instructor .id-kpi::before {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(140deg, transparent 35%, color-mix(in srgb, var(--kpi-accent, #8b5cf6) 50%, transparent) 50%, transparent 65%);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
            mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    opacity: 0;
    transition: opacity .25s var(--pc-ease);
    pointer-events: none;
    z-index: 1;
}
body.area-instructor .id-kpi:hover {
    transform: translateY(-3px);
    border-color: var(--pc-glass-border-hot) !important;
    box-shadow: 0 22px 50px rgba(8, 12, 30, .55), 0 0 50px color-mix(in srgb, var(--kpi-accent, #8b5cf6) 28%, transparent);
}
body.area-instructor .id-kpi:hover::before { opacity: 1; }
body.area-instructor .id-kpi-icon {
    background: linear-gradient(135deg,
        color-mix(in srgb, var(--kpi-accent, #8b5cf6) 80%, transparent),
        color-mix(in srgb, var(--kpi-accent, #8b5cf6) 35%, transparent)) !important;
    color: #fff !important;
    box-shadow: 0 12px 28px color-mix(in srgb, var(--kpi-accent, #8b5cf6) 30%, transparent);
}
body.area-instructor .id-kpi-num { color: #fff !important; letter-spacing: -.01em; }
body.area-instructor .id-kpi-lbl { color: var(--pc-text-muted) !important; }
body.area-instructor .id-kpi-link {
    color: color-mix(in srgb, var(--kpi-accent, #8b5cf6) 80%, #fff) !important;
}

body.area-instructor .id-card {
    border: 1px solid var(--pc-glass-border) !important;
    background: linear-gradient(180deg, rgba(20, 24, 52, .82), rgba(12, 16, 38, .92)) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 18px 44px rgba(8, 12, 30, .42);
}
body.area-instructor .id-card-title { color: #fff !important; letter-spacing: -.005em; }
body.area-instructor .id-card-sub   { color: var(--pc-text-muted) !important; }

/* Course Health badge system — append to existing CourseStats rows via inline
   data-health attribute (Excellent ≥85, Good ≥70, Warning ≥50, Critical <50).
   Existing markup doesn't set it yet; new code (or a tiny tweak) can opt in
   without breaking anything. */
.pc-health {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .25rem .65rem;
    border-radius: 999px;
    font-size: .65rem;
    font-weight: 800;
    border: 1px solid;
    text-transform: uppercase;
    letter-spacing: .05em;
    line-height: 1;
}
.pc-health::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 8px currentColor;
}
.pc-health--excellent { color: #4ade80; border-color: rgba(34, 197, 94, .4);   background: rgba(34, 197, 94, .12); }
.pc-health--good      { color: #67e8f9; border-color: rgba(6, 182, 212, .4);   background: rgba(6, 182, 212, .12); }
.pc-health--warning   { color: #fbbf24; border-color: rgba(245, 158, 11, .4);  background: rgba(245, 158, 11, .12); }
.pc-health--critical  { color: #fda4af; border-color: rgba(239, 68, 68, .4);   background: rgba(239, 68, 68, .12); }

/* Activity Feed timeline — uses existing RecentEnrollments/ReviewQueue lists.
   Designed to be dropped in as <li class="pc-activity-item">…</li>. */
.pc-activity {
    list-style: none;
    margin: 0;
    padding: 0 0 0 1.5rem;
    position: relative;
}
.pc-activity::before {
    content: "";
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--pc-purple), var(--pc-cyan));
    opacity: .5;
}
.pc-activity-item {
    position: relative;
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: .75rem;
    padding: .65rem .75rem;
    border-radius: 12px;
    transition: background .15s var(--pc-ease);
    color: var(--pc-text);
    text-decoration: none;
}
.pc-activity-item + .pc-activity-item { margin-top: .35rem; }
.pc-activity-item:hover { background: rgba(124, 58, 237, .08); }
.pc-activity-item::before {
    content: "";
    position: absolute;
    left: -19px;
    top: 18px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #fff 0%, transparent 60%), linear-gradient(135deg, var(--pc-purple), var(--pc-cyan));
    border: 2px solid rgba(255,255,255,.18);
    box-shadow: 0 0 0 4px rgba(124, 58, 237, .14);
}
.pc-activity-icon {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(124,58,237,.32), rgba(6,182,212,.2));
    color: #fff;
    font-size: .9rem;
    border: 1px solid var(--pc-glass-border);
    flex-shrink: 0;
}
.pc-activity-body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.pc-activity-title {
    margin: 0;
    font-size: .82rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.pc-activity-sub {
    margin: 0;
    font-size: .72rem;
    color: var(--pc-text-muted);
}
.pc-activity-time {
    font-size: .68rem;
    color: var(--pc-text-faint);
    white-space: nowrap;
    align-self: center;
}
.pc-activity-item--enroll .pc-activity-icon { background: linear-gradient(135deg, #22c55e, #14b8a6); }
.pc-activity-item--review .pc-activity-icon { background: linear-gradient(135deg, #f59e0b, #ef4444); }
.pc-activity-item--cert   .pc-activity-icon { background: linear-gradient(135deg, #8b5cf6, #ec4899); }
.pc-activity-item--quiz   .pc-activity-icon { background: linear-gradient(135deg, #06b6d4, #2563eb); }
.pc-activity-item--enroll::before { background: linear-gradient(135deg, #22c55e, #14b8a6); }
.pc-activity-item--review::before { background: linear-gradient(135deg, #f59e0b, #ef4444); }
.pc-activity-item--cert::before   { background: linear-gradient(135deg, #8b5cf6, #ec4899); }
.pc-activity-item--quiz::before   { background: linear-gradient(135deg, #06b6d4, #2563eb); }

/* ════════════════════════════════════════════════════════════════════════
   NOTIFICATIONS V3 OVERLAY — additive glass treatment over the existing
   .nc-* classes. Functionality stays identical; visuals match the
   premium-cards system.
   ──────────────────────────────────────────────────────────────────────── */

.nc-header,
.nc-row,
.nc-tabs,
.nc-group-head {
    border-color: var(--pc-glass-border) !important;
}
.nc-row {
    background: linear-gradient(180deg, rgba(20, 24, 52, .55), rgba(12, 16, 38, .72)) !important;
    transition: transform .15s var(--pc-ease), border-color .15s var(--pc-ease), background .15s var(--pc-ease);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}
.nc-row:hover {
    border-color: var(--pc-glass-border-hot) !important;
    background: linear-gradient(180deg, rgba(124, 58, 237, .12), rgba(12, 16, 38, .82)) !important;
    transform: translateX(2px);
}
.nc-row.nc-unread {
    background: linear-gradient(180deg, rgba(124, 58, 237, .14), rgba(20, 24, 52, .82)) !important;
}
.nc-row-title { color: #fff !important; font-weight: 700; }
.nc-row-message { color: var(--pc-text-muted) !important; }
.nc-row-meta { color: var(--pc-text-faint) !important; }

.nc-action-primary {
    background: linear-gradient(135deg, #7c3aed 0%, #6366f1 55%, #06b6d4 130%) !important;
    border-color: rgba(168, 132, 255, .6) !important;
    color: #fff !important;
    box-shadow: 0 12px 28px rgba(124, 58, 237, .3), inset 0 1px 0 rgba(255,255,255,.18) !important;
}
.nc-action-primary:hover { filter: brightness(1.06); }
.nc-action-danger {
    background: rgba(239, 68, 68, .08) !important;
    border-color: rgba(239, 68, 68, .35) !important;
    color: #fda4af !important;
}

.nc-bell-ring.has-unread { color: var(--pc-violet-2) !important; }
.nc-unread-chip {
    background: rgba(124, 58, 237, .18) !important;
    color: #c4b5fd !important;
    border: 1px solid rgba(168, 132, 255, .35) !important;
}

/* Instructor light theme overrides for the later-loaded premium dashboard layer. */
[data-theme="light"] body.area-instructor .id-banner {
    background:
        radial-gradient(120% 80% at 0% 0%, rgba(6, 182, 212, .18), transparent 58%),
        radial-gradient(120% 80% at 100% 100%, rgba(59, 130, 246, .12), transparent 60%),
        linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(239, 249, 252, .88)) !important;
    border-color: rgba(6, 182, 212, .18) !important;
    box-shadow: 0 22px 58px rgba(14, 116, 144, .12), inset 0 1px 0 rgba(255, 255, 255, .82);
    color: #0f172a;
}
[data-theme="light"] body.area-instructor .id-banner.ia-hero {
    background:
        radial-gradient(740px 260px at 0% 0%, rgba(6, 182, 212, .24), transparent 58%),
        linear-gradient(135deg, #ffffff 0%, #e8f8fc 52%, #f5fbff 100%) !important;
}
[data-theme="light"] body.area-instructor .id-banner .id-greeting-name {
    background: linear-gradient(120deg, #0f172a 0%, #0e7490 55%, #2563eb 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
[data-theme="light"] body.area-instructor .id-banner :is(.id-banner-subtitle, .id-banner-meta, .id-greeting-sub) {
    color: #475569 !important;
}
[data-theme="light"] body.area-instructor .id-banner-btn-primary {
    background: linear-gradient(135deg, #0891b2 0%, #2563eb 70%, #4f46e5 130%) !important;
    border-color: rgba(8, 145, 178, .42) !important;
    box-shadow: 0 14px 28px rgba(8, 145, 178, .22), inset 0 1px 0 rgba(255, 255, 255, .2);
}
[data-theme="light"] body.area-instructor .id-banner-btn-ghost {
    background: rgba(255, 255, 255, .72) !important;
    border-color: rgba(6, 182, 212, .22) !important;
    color: #075985 !important;
}
[data-theme="light"] body.area-instructor .ia-ring-track {
    stroke: rgba(14, 116, 144, .16);
}
[data-theme="light"] body.area-instructor .ia-hero-ring-lbl {
    color: #0f172a;
}
[data-theme="light"] body.area-instructor .ia-date-card {
    background: rgba(255, 255, 255, .74);
    border-color: rgba(6, 182, 212, .22);
    color: #0f172a;
}
[data-theme="light"] body.area-instructor .ia-date-card .bi {
    color: #0891b2;
}

[data-theme="light"] body.area-instructor .id-kpi {
    background: linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(247, 252, 255, .86)) !important;
    border-color: rgba(14, 116, 144, .14) !important;
    box-shadow: 0 16px 34px rgba(15, 23, 42, .075), inset 0 1px 0 rgba(255, 255, 255, .75);
}
[data-theme="light"] body.area-instructor .id-kpi:hover {
    border-color: rgba(6, 182, 212, .32) !important;
    box-shadow: 0 22px 42px rgba(14, 116, 144, .13);
}
[data-theme="light"] body.area-instructor .id-kpi-num {
    color: #0f172a !important;
}
[data-theme="light"] body.area-instructor .id-kpi-lbl {
    color: #64748b !important;
}
[data-theme="light"] body.area-instructor .id-kpi-link {
    color: #0e7490 !important;
}

[data-theme="light"] body.area-instructor .id-card,
[data-theme="light"] body.area-instructor .id-courses-panel,
[data-theme="light"] body.area-instructor .ia-review-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(247, 252, 255, .88)) !important;
    border-color: rgba(14, 116, 144, .14) !important;
    box-shadow: 0 16px 38px rgba(15, 23, 42, .075);
}
[data-theme="light"] body.area-instructor .id-card-title,
[data-theme="light"] body.area-instructor .pc-activity-title,
[data-theme="light"] body.area-instructor .nc-row-title {
    color: #0f172a !important;
}
[data-theme="light"] body.area-instructor .id-card-sub,
[data-theme="light"] body.area-instructor .pc-activity-sub,
[data-theme="light"] body.area-instructor .pc-activity-time,
[data-theme="light"] body.area-instructor .nc-row-message,
[data-theme="light"] body.area-instructor .nc-row-meta {
    color: #64748b !important;
}
[data-theme="light"] body.area-instructor .pc-activity-item:hover {
    background: rgba(6, 182, 212, .08);
}

[data-theme="light"] body.area-instructor .nc-header,
[data-theme="light"] body.area-instructor .nc-row,
[data-theme="light"] body.area-instructor .nc-tabs,
[data-theme="light"] body.area-instructor .nc-group-head {
    border-color: rgba(14, 116, 144, .14) !important;
}
[data-theme="light"] body.area-instructor .nc-row {
    background: linear-gradient(180deg, rgba(255, 255, 255, .92), rgba(247, 252, 255, .84)) !important;
    box-shadow: 0 10px 26px rgba(15, 23, 42, .055);
}
[data-theme="light"] body.area-instructor .nc-row:hover {
    border-color: rgba(6, 182, 212, .30) !important;
    background: linear-gradient(180deg, #ffffff, rgba(236, 253, 255, .86)) !important;
}
[data-theme="light"] body.area-instructor .nc-row.nc-unread {
    background: linear-gradient(180deg, rgba(236, 253, 255, .92), rgba(255, 255, 255, .9)) !important;
}
[data-theme="light"] body.area-instructor .nc-action-danger {
    background: rgba(239, 68, 68, .08) !important;
    color: #b91c1c !important;
}
[data-theme="light"] body.area-instructor .nc-unread-chip {
    background: rgba(6, 182, 212, .10) !important;
    color: #0e7490 !important;
    border-color: rgba(6, 182, 212, .24) !important;
}

/* Student notification center light-mode override for premium .nc-* rules. */
[data-theme="light"] body.area-student .nc-header,
[data-theme="light"] body.area-student .nc-row,
[data-theme="light"] body.area-student .nc-tabs,
[data-theme="light"] body.area-student .nc-group-head {
    border-color: rgba(99, 102, 241, .16) !important;
}

[data-theme="light"] body.area-student .nc-row {
    background: linear-gradient(180deg, rgba(255, 255, 255, .96), rgba(248, 250, 255, .88)) !important;
    box-shadow: 0 12px 30px -26px rgba(30, 64, 175, .34);
}

[data-theme="light"] body.area-student .nc-row:hover {
    background: linear-gradient(180deg, #ffffff, rgba(239, 246, 255, .92)) !important;
    border-color: rgba(59, 130, 246, .28) !important;
}

[data-theme="light"] body.area-student .nc-row.nc-unread {
    background: linear-gradient(135deg, rgba(239, 246, 255, .98), rgba(245, 243, 255, .96)) !important;
    border-color: rgba(99, 102, 241, .30) !important;
    box-shadow: 0 16px 38px -28px rgba(79, 70, 229, .40);
}

[data-theme="light"] body.area-student .nc-row-title {
    color: #0f172a !important;
}

[data-theme="light"] body.area-student .nc-row-message,
[data-theme="light"] body.area-student .nc-row-meta {
    color: #64748b !important;
}

[data-theme="light"] body.area-student .nc-delete-btn {
    color: #64748b !important;
    background: rgba(255, 255, 255, .74) !important;
    border-color: rgba(99, 102, 241, .16) !important;
}

[data-theme="light"] body.area-student .nc-delete-btn:hover {
    color: #dc2626 !important;
    background: rgba(254, 242, 242, .95) !important;
    border-color: rgba(248, 113, 113, .28) !important;
}

[data-theme="light"] body.area-student .nc-unread-chip {
    background: rgba(59, 130, 246, .10) !important;
    color: #2563eb !important;
    border-color: rgba(59, 130, 246, .22) !important;
}

/* Admin notification center light-mode override for the later premium .nc-* layer. */
[data-theme="light"] body.area-admin .nc-header,
[data-theme="light"] body.area-admin .nc-row,
[data-theme="light"] body.area-admin .nc-tabs,
[data-theme="light"] body.area-admin .nc-group-head,
[data-theme="light"] body.area-admin .notification-card {
    border-color: rgba(168, 85, 247, .16) !important;
}

[data-theme="light"] body.area-admin .nc-row,
[data-theme="light"] body.area-admin .notification-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, .96), rgba(250, 245, 255, .88)) !important;
    box-shadow: 0 12px 30px -26px rgba(88, 28, 135, .30);
}

[data-theme="light"] body.area-admin .nc-row:hover {
    background: linear-gradient(180deg, #ffffff, rgba(250, 245, 255, .92)) !important;
    border-color: rgba(124, 58, 237, .26) !important;
}

[data-theme="light"] body.area-admin .nc-row.nc-unread,
[data-theme="light"] body.area-admin .notification-card.unread {
    background: linear-gradient(135deg, rgba(239, 246, 255, .98), rgba(250, 245, 255, .96)) !important;
    border-color: rgba(124, 58, 237, .30) !important;
    box-shadow: 0 16px 38px -28px rgba(124, 58, 237, .42);
}

[data-theme="light"] body.area-admin .notification-card.read {
    background: linear-gradient(180deg, rgba(255, 255, 255, .95), rgba(248, 250, 255, .84)) !important;
}

[data-theme="light"] body.area-admin .nc-row-title {
    color: #111827 !important;
}

[data-theme="light"] body.area-admin .nc-row-message,
[data-theme="light"] body.area-admin .nc-row-meta {
    color: #5b6472 !important;
}

[data-theme="light"] body.area-admin .nc-unread-chip {
    background: rgba(124, 58, 237, .10) !important;
    color: #6d28d9 !important;
    border-color: rgba(124, 58, 237, .22) !important;
}

[data-theme="light"] body.area-admin .nc-action-danger {
    background: rgba(239, 68, 68, .08) !important;
    color: #b91c1c !important;
}

/* Mobile audit for sprint pages: dashboard banner stacks, KPI grid
   collapses to two columns, then one. Notification rows lose their
   icon column under 480px to keep title legible. */
@media (max-width: 1024px) {
    body.area-instructor .id-kpi-grid { grid-template-columns: repeat(2, 1fr) !important; }
}
@media (max-width: 768px) {
    body.area-instructor .id-banner { padding: 1.3rem 1.15rem !important; }
}
@media (max-width: 540px) {
    body.area-instructor .id-kpi-grid { grid-template-columns: 1fr !important; }
    .nc-row { padding: .75rem .85rem; }
    .pc-activity-item { grid-template-columns: auto 1fr; }
    .pc-activity-item .pc-activity-time { grid-column: 2 / 3; }
}
@media (max-width: 380px) {
    body.area-instructor .id-greeting-name { font-size: 1.05rem !important; }
    body.area-instructor .id-banner-actions { flex-direction: column; align-items: stretch; }
    body.area-instructor .id-banner-btn { width: 100%; text-align: center; }
}

/* ════════════════════════════════════════════════════════════════════════
   PUBLIC BROWSE V2 — filter bar, view toggle, featured panel, badges
   for the /Courses surface. All additive over the pc-* system.
   ──────────────────────────────────────────────────────────────────────── */

.pc-filter-bar {
    display: grid;
    grid-template-columns: minmax(260px, 1fr) minmax(170px, auto) minmax(170px, auto) auto;
    align-items: center;
    gap: .75rem;
    margin: 0 0 1.55rem;
    padding: .85rem;
    border-radius: 18px;
    border: 1px solid var(--pc-glass-border);
    background:
        radial-gradient(100% 130% at 0% 0%, rgba(124, 58, 237, .12), transparent 58%),
        linear-gradient(180deg, rgba(20, 24, 52, .72), rgba(12, 16, 38, .82));
    box-shadow: 0 18px 48px rgba(8, 12, 30, .28), inset 0 1px 0 rgba(255, 255, 255, .06);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}
.pc-filter-bar .pc-search {
    min-width: 0;
    width: 100%;
}
.pc-filter-bar .pc-search input,
.pc-filter-bar .pc-select,
.pc-view-toggle {
    min-height: 46px;
}
.pc-filter-bar .pc-search input {
    width: 100%;
    border-color: rgba(148, 163, 255, .16);
    background: rgba(8, 12, 30, .58);
}
.pc-filter-bar .pc-select {
    width: 100%;
    height: 46px;
    min-width: 168px;
    padding: 0 2.55rem 0 .95rem;
    border-radius: 13px;
    border: 1px solid rgba(148, 163, 255, .16);
    background-color: rgba(8, 12, 30, .58);
    background-image: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 20 20' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5.5 7.5L10 12L14.5 7.5' stroke='%23c4b5fd' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right .85rem center;
    background-size: 16px 16px;
    color: var(--pc-text);
    font-size: .83rem;
    font-weight: 800;
    letter-spacing: 0;
    appearance: none;
    -webkit-appearance: none;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .04);
    cursor: pointer;
    transition: border-color .15s var(--pc-ease), box-shadow .15s var(--pc-ease), background-color .15s var(--pc-ease);
}
.pc-filter-bar .pc-select option {
    background: #0b1024;
    color: #f8fafc;
}
.pc-filter-bar .pc-search:focus-within input,
.pc-filter-bar .pc-select:focus,
.pc-view-toggle:focus-within {
    outline: none;
    border-color: rgba(168, 132, 255, .62);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, .14), inset 0 1px 0 rgba(255, 255, 255, .06);
}
.pc-view-toggle {
    display: inline-flex;
    justify-self: end;
    border-radius: 13px;
    overflow: hidden;
    border: 1px solid rgba(148, 163, 255, .16);
    background: rgba(8, 12, 30, .52);
    padding: .2rem;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .04);
}
.pc-view-toggle button {
    appearance: none;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: var(--pc-text-muted);
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    cursor: pointer;
    transition: background .15s var(--pc-ease), color .15s var(--pc-ease), transform .15s var(--pc-ease);
}
.pc-view-toggle button:hover { color: #fff; background: rgba(255,255,255,.06); transform: translateY(-1px); }
.pc-view-toggle button.is-active {
    background: linear-gradient(135deg, rgba(124, 58, 237, .35), rgba(6, 182, 212, .25));
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(168, 132, 255, .35);
}

/* Public card variant — keeps the global pc-card visuals but lets the
   page address it as <article class="pc-card pc-card--public"> so future
   tweaks (e.g. tighter padding) don't leak into the admin/instructor
   surfaces. Empty rules today; real attachment points for tomorrow. */
.pc-card.pc-card--public {
    min-height: 100%;
}
.pc-card.pc-card--public,
.pc-card.pc-card--public:hover,
.pc-card.pc-card--public:focus {
    color: inherit;
    text-decoration: none;
}
.pc-card.pc-card--public .pc-body {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-width: 0;
}
.pc-card.pc-card--public .pc-title {
    min-height: 2.65em;
    max-height: 2.65em;
    line-height: 1.325;
    -webkit-line-clamp: 2;
    text-decoration: none;
}
.pc-card.pc-card--public .pc-desc {
    min-height: 4.95em;
    max-height: 4.95em;
    line-height: 1.65;
    -webkit-line-clamp: 3;
    text-decoration: none;
}
.pc-card.pc-card--public .pc-title,
.pc-card.pc-card--public .pc-desc,
.pc-card.pc-card--public .pc-instructor,
.pc-card.pc-card--public .pc-metric,
.pc-card.pc-card--public .pc-action {
    text-decoration: none;
}
.pc-card--equal .pc-body {
    flex: 1 1 auto;
}
.pc-card--equal .pc-desc {
    min-height: 2.5rem;
}
.pc-card--equal .pc-metrics {
    margin-top: auto;
}
.pc-card--public .pc-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: .5rem;
    align-items: stretch;
}
.pc-card--public .pc-metric {
    min-height: 68px;
    justify-content: center;
    min-width: 0;
    overflow: hidden;
}
.pc-card--public .pc-metric-label,
.pc-card--public .pc-metric-value,
.pc-card--public .pc-instructor-name,
.pc-card--public .pc-instructor-rating {
    min-width: 0;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
}
.pc-card--public .pc-metric-label,
.pc-card--public .pc-instructor-name,
.pc-card--public .pc-instructor-rating {
    white-space: nowrap;
}
.pc-card--public .pc-instructor {
    min-height: 32px;
    gap: .55rem;
    align-items: center;
}
.pc-card--public .pc-instructor-name {
    flex: 1 1 auto;
}
.pc-card--public .pc-instructor-rating {
    flex: 0 1 auto;
}
.pc-card--public .pc-action {
    min-height: 40px;
    border-radius: 11px;
}
.pc-card--public .pc-actions {
    margin-top: auto;
}

.pc-card .pc-corner--lang {
    text-transform: uppercase;
    letter-spacing: .08em;
    font-size: .65rem;
}
.pc-card .pc-corner--lang i { color: var(--pc-cyan-2); }

/* Featured panel — wide hero-ish surface BELOW the grid. Reuses pc-hero
   tokens (gradient overlay, glass border) but is sized as a single row. */
.pc-featured {
    position: relative;
    isolation: isolate;
    display: grid;
    grid-template-columns: minmax(280px, .92fr) minmax(0, 1.08fr);
    gap: 1.1rem;
    align-items: stretch;
    border-radius: 20px;
    border: 1px solid var(--pc-glass-border);
    overflow: hidden;
    background:
        radial-gradient(110% 100% at 0% 0%, rgba(6, 182, 212, .10), transparent 58%),
        linear-gradient(180deg, rgba(20, 24, 52, .78), rgba(12, 16, 38, .88));
    box-shadow: 0 20px 54px rgba(8, 12, 30, .34);
    margin: 2rem 0 0;
    padding: .85rem;
}
.pc-featured-media {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    align-self: center;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, .10);
    background: linear-gradient(135deg, #0c1130, #1a1342 60%, #061d3a);
}
.pc-featured-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.pc-featured-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(3, 7, 18, .04) 0%, rgba(3, 7, 18, .26) 70%, rgba(3, 7, 18, .54) 100%);
    pointer-events: none;
}
.pc-featured-placeholder {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: rgba(255,255,255,.5);
    font-size: 3.2rem;
}
.pc-featured-badge {
    position: absolute;
    top: .85rem;
    left: .85rem;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .35rem .75rem;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(124, 58, 237, .85), rgba(236, 72, 153, .65));
    color: #fff;
    font-size: .68rem;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
    border: 1px solid rgba(255, 255, 255, .22);
}
.pc-featured-body {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: .95rem;
    padding: .65rem .8rem .65rem .25rem;
    z-index: 1;
}
.pc-featured-title {
    margin: 0;
    color: #fff;
    font-size: clamp(1.4rem, 2.4vw, 1.85rem);
    font-weight: 900;
    letter-spacing: -.01em;
    line-height: 1.18;
}
.pc-featured-desc {
    margin: 0;
    color: var(--pc-text-muted);
    font-size: .92rem;
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.pc-featured-meta {
    display: grid;
    grid-template-columns: repeat(2, minmax(130px, 1fr));
    gap: .65rem;
    margin: .25rem 0;
}
.pc-featured-meta-card {
    display: flex;
    align-items: center;
    gap: .55rem;
    padding: .65rem .75rem;
    border-radius: 12px;
    border: 1px solid var(--pc-glass-border);
    background: rgba(8, 12, 30, .42);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.pc-featured-meta-icon {
    display: grid;
    place-items: center;
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(124,58,237,.32), rgba(6,182,212,.2));
    color: #fff;
    font-size: .9rem;
    flex-shrink: 0;
}
.pc-featured-meta-text { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.pc-featured-meta-label {
    font-size: .58rem;
    font-weight: 800;
    color: var(--pc-text-faint);
    text-transform: uppercase;
    letter-spacing: .08em;
}
.pc-featured-meta-value {
    font-size: .82rem;
    font-weight: 800;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.pc-featured-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .55rem;
    align-items: center;
}

@media (max-width: 880px) {
    .pc-filter-bar {
        grid-template-columns: minmax(0, 1fr) minmax(150px, 1fr);
    }
    .pc-filter-bar .pc-search {
        grid-column: 1 / -1;
    }
    .pc-view-toggle {
        justify-self: stretch;
    }
    .pc-view-toggle button {
        width: 100%;
        flex: 1 1 0;
    }
    .pc-featured {
        grid-template-columns: 1fr;
        padding: .75rem;
    }
    .pc-featured-body {
        padding: .45rem .25rem .35rem;
    }
}

/* List-view variant: when the grid carries .is-list-view, cards lay out
   horizontally with cover on the left and body on the right. */
.pc-grid.is-list-view {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.pc-grid.is-list-view .pc-card {
    flex-direction: row;
}
.pc-grid.is-list-view .pc-cover {
    width: 280px;
    flex-shrink: 0;
    aspect-ratio: 16 / 9;
}
.pc-grid.is-list-view .pc-body { flex: 1; }
@media (max-width: 720px) {
    .pc-grid.is-list-view .pc-card { flex-direction: column; }
    .pc-grid.is-list-view .pc-cover { width: 100%; }
}

@media (max-width: 560px) {
    .pc-filter-bar {
        grid-template-columns: 1fr;
        padding: .7rem;
    }
    .pc-filter-bar .pc-select {
        min-width: 0;
    }
    .pc-featured-meta,
    .pc-card--public .pc-metrics {
        grid-template-columns: 1fr;
    }
    .pc-card--public .pc-metric {
        min-height: 58px;
    }
    .pc-featured-actions .pc-action {
        width: 100%;
    }
}

/* Light-mode fallbacks */
[data-theme="light"] .pc-filter-bar {
    background:
        radial-gradient(100% 130% at 0% 0%, rgba(79, 70, 229, .08), transparent 58%),
        linear-gradient(180deg, rgba(255, 255, 255, .92), rgba(247, 249, 255, .96));
    border-color: rgba(99, 102, 241, .15);
    box-shadow: 0 16px 38px rgba(99, 102, 241, .10), 0 2px 8px rgba(15, 23, 42, .04);
}
[data-theme="light"] .pc-filter-bar .pc-search input,
[data-theme="light"] .pc-filter-bar .pc-select {
    background-color: #fff;
    border-color: rgba(99, 102, 241, .18);
    color: #0f172a;
}
[data-theme="light"] .pc-filter-bar .pc-select {
    background-image: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 20 20' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5.5 7.5L10 12L14.5 7.5' stroke='%234f46e5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}
[data-theme="light"] .pc-filter-bar .pc-select option {
    background: #fff;
    color: #0f172a;
}
[data-theme="light"] .pc-view-toggle {
    background: #fff;
    border-color: rgba(99, 102, 241, .18);
    box-shadow: inset 0 1px 0 rgba(15, 23, 42, .02);
}
[data-theme="light"] .pc-view-toggle button { color: #475569; }
[data-theme="light"] .pc-view-toggle button:hover {
    color: #1e1b4b;
    background: #f5f7fc;
}
[data-theme="light"] .pc-view-toggle button.is-active {
    background: linear-gradient(135deg, rgba(124, 58, 237, .15), rgba(6, 182, 212, .1));
    color: #1e1b4b;
}
[data-theme="light"] .pc-featured {
    background:
        radial-gradient(110% 100% at 0% 0%, rgba(6, 182, 212, .08), transparent 58%),
        linear-gradient(180deg, #ffffff, #f8fbff);
    border-color: rgba(99, 102, 241, .14);
    box-shadow: 0 14px 38px rgba(99, 102, 241, .12);
}
[data-theme="light"] .pc-featured-title { color: #0f172a; }
[data-theme="light"] .pc-featured-desc  { color: #475569; }
[data-theme="light"] .pc-featured-meta-card {
    background: #f5f7fc;
    border-color: rgba(99, 102, 241, .14);
}
[data-theme="light"] .pc-featured-meta-value { color: #0f172a; }

/* ════════════════════════════════════════════════════════════════════════
   PROFILE V3 — executive profile surface. Cover banner (CSS mesh, no
   stretched image), overlapping avatar, progress-overview ring, stat
   strip, certificate highlight. Reuses pc-hero-stats / pc-activity /
   pc-action primitives so the profile shares the app's design language.
   ──────────────────────────────────────────────────────────────────────── */

.pc-profile {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 1180px;
    width: 100%;
    min-width: 0;
}

/* Cover banner — pure CSS aurora, so no image can dominate or stretch. */
.pc-profile-cover {
    position: relative;
    isolation: isolate;
    border-radius: var(--pc-radius-lg);
    overflow: hidden;
    border: 1px solid var(--pc-glass-border);
    min-height: 0;
    padding: 1.5rem;
    background:
        radial-gradient(120% 140% at 12% 0%, rgba(124, 58, 237, .42), transparent 55%),
        radial-gradient(120% 160% at 92% 30%, rgba(6, 182, 212, .32), transparent 58%),
        radial-gradient(90% 120% at 60% 100%, rgba(236, 72, 153, .22), transparent 60%),
        linear-gradient(135deg, #0c1130, #160f3a 55%, #06182f);
    box-shadow: 0 24px 64px rgba(8, 12, 30, .55), 0 0 70px rgba(124, 58, 237, .18);
}
.pc-profile-cover::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(115deg, rgba(255,255,255,.05) 0 1px, transparent 1px 22px);
    opacity: .35;
    pointer-events: none;
}

/* Hero row overlaps the cover with the avatar + identity + actions. */
.pc-profile-hero {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(120px, auto) minmax(0, 1fr) minmax(220px, auto);
    align-items: center;
    gap: 1.5rem;
}
.pc-profile-avatar-col {
    display: grid;
    place-items: center;
    align-self: center;
}
.pc-profile-avatar {
    position: relative;
    width: 120px;
    height: 120px;
    border-radius: 24px;
    overflow: hidden;
    flex-shrink: 0;
    display: grid;
    place-items: center;
    color: #fff;
    font-size: 2.4rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--pc-purple), var(--pc-cyan));
    border: 3px solid rgba(8, 12, 30, .85);
    box-shadow: 0 22px 50px rgba(8, 12, 30, .55), 0 0 0 1px var(--pc-glass-border-hot);
}
.pc-profile-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.pc-profile-avatar [hidden] { display: none !important; }
.pc-profile-identity {
    display: flex;
    flex-direction: column;
    gap: .45rem;
    min-width: 0;
    justify-content: center;
}
.pc-profile-kicker {
    color: var(--pc-violet-2);
    font-size: .66rem;
    font-weight: 900;
    letter-spacing: .12em;
    text-transform: uppercase;
}
.pc-profile-name {
    margin: 0;
    color: #fff;
    font-size: clamp(1.5rem, 2.6vw, 2rem);
    font-weight: 900;
    letter-spacing: -.015em;
    line-height: 1.1;
}
.pc-profile-meta {
    display: flex;
    flex-wrap: wrap;
    gap: .85rem;
    color: var(--pc-text-muted);
    font-size: .8rem;
}
.pc-profile-meta span { display: inline-flex; align-items: center; gap: .35rem; }
.pc-profile-meta i { color: var(--pc-violet-2); }
.pc-profile-hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    align-items: center;
    min-width: 0;
}
.pc-profile-action-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: .7rem;
}
.pc-profile-action-row .pc-action {
    height: 44px;
    min-width: 128px;
    padding: 0 1rem;
    white-space: nowrap;
}
.pc-profile-action-row--standalone {
    display: none;
}

.pc-profile-bio {
    position: relative;
    z-index: 1;
    margin: 1.1rem 0 0;
    padding: 1rem 1.1rem;
    color: var(--pc-text-muted);
    font-size: .92rem;
    line-height: 1.65;
    max-width: 80ch;
    border-radius: var(--pc-radius);
    border: 1px solid rgba(255,255,255,.08);
    background: rgba(8, 12, 30, .18);
}
.pc-profile-bio--empty { font-style: italic; color: var(--pc-text-faint); }

/* Two-column body: progress overview ring + stat strip. */
.pc-profile-overview {
    display: grid;
    grid-template-columns: minmax(240px, .72fr) minmax(0, 1.8fr);
    gap: 1.5rem;
    align-items: stretch;
}
.pc-profile-ring-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .85rem;
    padding: 1.6rem;
    border-radius: var(--pc-radius-lg);
    border: 1px solid var(--pc-glass-border);
    background:
        radial-gradient(circle at 0% 0%, rgba(124,58,237,.15), transparent 55%),
        linear-gradient(180deg, rgba(20, 24, 52, .85), rgba(12, 16, 38, .92));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    text-align: center;
}
.pc-profile-ring {
    position: relative;
    width: 150px;
    height: 150px;
}
.pc-profile-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.pc-profile-ring-track { fill: none; stroke: rgba(148, 163, 255, .18); stroke-width: 10; }
.pc-profile-ring-fill  { fill: none; stroke: url(#pcRingGrad); stroke-width: 10; stroke-linecap: round; filter: drop-shadow(0 0 10px rgba(124, 58, 237, .55)); }
.pc-profile-ring-center {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .1rem;
}
.pc-profile-ring-value { font-size: 1.9rem; font-weight: 900; color: #fff; line-height: 1; }
.pc-profile-ring-sub { font-size: .62rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--pc-text-muted); }
.pc-profile-ring-caption { color: var(--pc-text-muted); font-size: .82rem; }
.pc-profile-summary {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
    min-width: 0;
}
.pc-profile-kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}
.pc-profile-kpi {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: .8rem;
    min-height: 118px;
    padding: 1.05rem;
    border-radius: var(--pc-radius);
    border: 1px solid var(--pc-glass-border);
    background:
        radial-gradient(circle at 100% 0%, rgba(124,58,237,.12), transparent 48%),
        rgba(255,255,255,.035);
    text-decoration: none;
    transition: transform .18s var(--pc-ease), border-color .18s var(--pc-ease), box-shadow .18s var(--pc-ease);
}
.pc-profile-kpi:hover {
    transform: translateY(-2px);
    border-color: var(--pc-glass-border-hot);
    box-shadow: 0 18px 38px rgba(8, 12, 30, .22), 0 0 26px rgba(124,58,237,.14);
}
.pc-profile-kpi-label {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    color: var(--pc-text-muted);
    font-size: .72rem;
    font-weight: 850;
    line-height: 1.25;
    text-transform: uppercase;
}
.pc-profile-kpi-label i { color: var(--pc-violet-2); font-size: 1rem; }
.pc-profile-kpi-value {
    color: #fff;
    font-size: 1.75rem;
    font-weight: 950;
    line-height: 1;
}
.pc-profile-kpi--cyan .pc-profile-kpi-label i { color: var(--pc-cyan-2); }
.pc-profile-kpi--pink .pc-profile-kpi-label i { color: var(--pc-pink); }
.pc-profile-kpi--gold .pc-profile-kpi-label i { color: var(--pc-amber); }
.pc-profile-kpi--green .pc-profile-kpi-label i { color: var(--pc-green); }

/* Certificate highlight — award glow. */
.pc-profile-cert {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.1rem 1.25rem;
    border-radius: var(--pc-radius);
    border: 1px solid rgba(245, 158, 11, .3);
    background:
        radial-gradient(120% 140% at 100% 0%, rgba(245, 158, 11, .16), transparent 60%),
        linear-gradient(180deg, rgba(20, 24, 52, .85), rgba(12, 16, 38, .92));
    text-decoration: none;
    transition: transform .2s var(--pc-ease), border-color .2s var(--pc-ease), box-shadow .2s var(--pc-ease);
    min-height: 86px;
}
.pc-profile-cert:hover {
    transform: translateY(-2px);
    border-color: rgba(245, 158, 11, .5);
    box-shadow: 0 18px 40px rgba(245, 158, 11, .18);
}
.pc-profile-cert-icon {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, #f59e0b, #ec4899);
    color: #fff;
    font-size: 1.5rem;
    flex-shrink: 0;
    box-shadow: 0 14px 30px rgba(245, 158, 11, .35);
}
.pc-profile-cert-body { display: flex; flex-direction: column; gap: 2px; }
.pc-profile-cert-value { color: #fff; font-size: 1.4rem; font-weight: 900; line-height: 1; }
.pc-profile-cert-label { color: var(--pc-text-muted); font-size: .78rem; font-weight: 700; }
.pc-profile-cert > .bi-chevron-right {
    margin-left: auto;
    color: var(--pc-text-muted);
}

/* Section wrapper for the profile panels. */
.pc-profile-panel {
    padding: 1.3rem 1.4rem;
    border-radius: var(--pc-radius-lg);
    border: 1px solid var(--pc-glass-border);
    background: linear-gradient(180deg, rgba(20, 24, 52, .82), rgba(12, 16, 38, .92));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}
.pc-profile-panel .pc-section-head {
    margin-bottom: 1rem;
}
.pc-profile-panel .pc-section-head h2 {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
}
.pc-profile-quick-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
}
.pc-profile-quick-card {
    min-height: 136px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .8rem;
    padding: 1.15rem;
    text-align: center;
    border-radius: var(--pc-radius);
    border: 1px solid var(--pc-glass-border);
    background:
        radial-gradient(circle at 50% 0%, rgba(6,182,212,.12), transparent 46%),
        linear-gradient(180deg, rgba(255,255,255,.055), rgba(255,255,255,.025));
    text-decoration: none;
    color: #fff;
    transition: transform .18s var(--pc-ease), border-color .18s var(--pc-ease), box-shadow .18s var(--pc-ease), background .18s var(--pc-ease);
}
.pc-profile-quick-card span {
    display: grid;
    place-items: center;
    width: 50px;
    height: 50px;
    border-radius: 16px;
    color: #fff;
    background: linear-gradient(135deg, #7c3aed, #06b6d4);
    box-shadow: 0 14px 30px rgba(6,182,212,.2);
}
.pc-profile-quick-card i { font-size: 1.35rem; }
.pc-profile-quick-card strong {
    color: #fff;
    font-size: .9rem;
    line-height: 1.25;
}
.pc-profile-quick-card:hover {
    color: #fff;
    transform: translateY(-3px);
    border-color: rgba(6,182,212,.45);
    box-shadow: 0 22px 44px rgba(8,12,30,.28), 0 0 34px rgba(6,182,212,.16);
    background:
        radial-gradient(circle at 50% 0%, rgba(6,182,212,.18), transparent 48%),
        linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.03));
}

@media (max-width: 880px) {
    .pc-profile-hero {
        grid-template-columns: auto minmax(0, 1fr);
        align-items: center;
        gap: 1.1rem;
    }
    .pc-profile-hero-actions {
        grid-column: 1 / -1;
        justify-content: flex-start;
    }
    .pc-profile-avatar { width: 96px; height: 96px; font-size: 2rem; border-radius: 22px; }
    .pc-profile-overview { grid-template-columns: 1fr; }
    .pc-profile-kpi-grid { grid-template-columns: repeat(auto-fit, minmax(136px, 1fr)); }
}
@media (max-width: 520px) {
    .pc-profile { gap: 1rem; }
    .pc-profile-cover { padding: 1rem; border-radius: 18px; }
    .pc-profile-hero {
        grid-template-columns: 1fr;
        justify-items: center;
        text-align: center;
    }
    .pc-profile-avatar { width: 80px; height: 80px; font-size: 1.65rem; border-radius: 18px; }
    .pc-profile-identity { align-items: center; width: 100%; }
    .pc-profile-meta { justify-content: center; gap: .55rem; overflow-wrap: anywhere; }
    .pc-profile-hero-actions { width: 100%; justify-content: center; }
    .pc-profile-action-row { width: 100%; justify-content: stretch; }
    .pc-profile-action-row .pc-action {
        flex: 1 1 100%;
        min-width: 0;
        width: 100%;
    }
    .pc-profile-bio {
        padding: .85rem;
        text-align: left;
        overflow-wrap: anywhere;
    }
    .pc-profile-ring-card,
    .pc-profile-panel { padding: 1rem; }
    .pc-profile-kpi-grid,
    .pc-profile-quick-grid { grid-template-columns: 1fr; gap: .8rem; }
    .pc-profile-kpi { min-height: 104px; }
    .pc-profile-quick-card { min-height: 120px; }
}

[data-theme="light"] .pc-profile-cover {
    border-color: rgba(99, 102, 241, .14);
}
[data-theme="light"] .pc-profile-name { color: #0f172a; }
[data-theme="light"] .pc-profile-ring-card,
[data-theme="light"] .pc-profile-panel,
[data-theme="light"] .pc-profile-cert {
    background: #ffffff;
    border-color: rgba(99, 102, 241, .14);
}
[data-theme="light"] .pc-profile-bio,
[data-theme="light"] .pc-profile-kpi,
[data-theme="light"] .pc-profile-quick-card {
    background: #ffffff;
    border-color: rgba(99, 102, 241, .14);
}
[data-theme="light"] .pc-profile-ring-value { color: #0f172a; }
[data-theme="light"] .pc-profile-cert-value { color: #0f172a; }
[data-theme="light"] .pc-profile-kpi-value,
[data-theme="light"] .pc-profile-quick-card strong { color: #0f172a; }
[data-theme="light"] .pc-profile-quick-card:hover { color: #0f172a; }
[data-theme="light"] .pc-profile-avatar { border-color: #fff; }

/* ── Role-tinted cover variants ──────────────────────────────────────── */
.pc-profile-cover--student {
    background:
        radial-gradient(120% 140% at 12% 0%, rgba(59, 130, 246, .42), transparent 55%),
        radial-gradient(120% 160% at 92% 30%, rgba(6, 182, 212, .38), transparent 58%),
        radial-gradient(90% 120% at 60% 100%, rgba(14, 165, 233, .22), transparent 60%),
        linear-gradient(135deg, #07142f, #0c2548 55%, #051c3a);
    box-shadow: 0 24px 64px rgba(8, 12, 30, .55), 0 0 70px rgba(56, 189, 248, .22);
}
.pc-profile-cover--student .pc-profile-avatar {
    background: linear-gradient(135deg, var(--pc-blue), var(--pc-cyan));
}
.pc-profile-cover--student .pc-profile-kicker { color: #67e8f9; }

.pc-profile-cover--instructor {
    /* same as default — kept as an explicit name for the test */
    background:
        radial-gradient(120% 140% at 12% 0%, rgba(124, 58, 237, .42), transparent 55%),
        radial-gradient(120% 160% at 92% 30%, rgba(6, 182, 212, .32), transparent 58%),
        radial-gradient(90% 120% at 60% 100%, rgba(236, 72, 153, .22), transparent 60%),
        linear-gradient(135deg, #0c1130, #160f3a 55%, #06182f);
}

.pc-profile-cover--admin {
    background:
        radial-gradient(120% 140% at 12% 0%, rgba(245, 158, 11, .35), transparent 55%),
        radial-gradient(120% 160% at 92% 30%, rgba(168, 85, 247, .35), transparent 58%),
        radial-gradient(90% 120% at 60% 100%, rgba(217, 119, 6, .2), transparent 60%),
        linear-gradient(135deg, #1a1408, #2a1648 55%, #150828);
    box-shadow: 0 24px 64px rgba(8, 12, 30, .55), 0 0 70px rgba(245, 158, 11, .22);
}
.pc-profile-cover--admin .pc-profile-avatar {
    background: linear-gradient(135deg, var(--pc-amber), var(--pc-purple));
}
.pc-profile-cover--admin .pc-profile-kicker { color: #fbbf24; }

/* ── Role badge — visible chip next to the name ──────────────────────── */
.pc-role-badge {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .3rem .65rem;
    border-radius: 999px;
    font-size: .65rem;
    font-weight: 900;
    letter-spacing: .12em;
    text-transform: uppercase;
    border: 1px solid;
    line-height: 1;
    width: max-content;
}
.pc-role-badge i { font-size: .9rem; }
.pc-role-badge--student    { color: #67e8f9; border-color: rgba(6, 182, 212, .4);  background: rgba(6, 182, 212, .14); }
.pc-role-badge--instructor { color: #c4b5fd; border-color: rgba(168, 132, 255, .45); background: rgba(124, 58, 237, .18); }
.pc-role-badge--admin      { color: #fbbf24; border-color: rgba(245, 158, 11, .45); background: rgba(245, 158, 11, .14); }

/* ── Online indicator ────────────────────────────────────────────────── */
.pc-profile-online {
    position: absolute;
    bottom: 6px;
    right: 6px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #22c55e;
    border: 3px solid #0a0e22;
    box-shadow: 0 0 10px rgba(34, 197, 94, .8);
}

/* ── Reputation / achievement strip ──────────────────────────────────── */
.pc-rep-strip {
    display: flex;
    flex-wrap: wrap;
    gap: .55rem;
    margin: .25rem 0 0;
}
.pc-rep-badge {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .45rem .8rem;
    border-radius: 999px;
    font-size: .72rem;
    font-weight: 800;
    border: 1px solid;
    background: rgba(255, 255, 255, .03);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    line-height: 1.1;
}
.pc-rep-badge i { font-size: .9rem; }
.pc-rep-badge--newcomer { color: #94a3b8; border-color: rgba(148, 163, 184, .3); }
.pc-rep-badge--learner  { color: #67e8f9; border-color: rgba(6, 182, 212, .4);  background: rgba(6, 182, 212, .1); }
.pc-rep-badge--devoted  { color: #c4b5fd; border-color: rgba(168, 132, 255, .45); background: rgba(124, 58, 237, .12); }
.pc-rep-badge--top      { color: #fbbf24; border-color: rgba(245, 158, 11, .45); background: rgba(245, 158, 11, .12); box-shadow: 0 0 16px rgba(245, 158, 11, .18); }
.pc-rep-badge--elite    { color: #f0abfc; border-color: rgba(236, 72, 153, .45); background: rgba(236, 72, 153, .12); box-shadow: 0 0 16px rgba(236, 72, 153, .18); }
.pc-rep-badge--leader   { color: #fff; border-color: rgba(168, 132, 255, .5); background: linear-gradient(135deg, rgba(124, 58, 237, .35), rgba(245, 158, 11, .25)); box-shadow: 0 0 18px rgba(168, 132, 255, .25); }

[data-theme="light"] .pc-profile-cover--student,
[data-theme="light"] .pc-profile-cover--admin,
[data-theme="light"] .pc-profile-cover--instructor {
    /* keep the cover deep in light mode too — it's an editorial banner */
}
[data-theme="light"] .pc-role-badge--student    { background: rgba(6, 182, 212, .08); color: #155e75; }
[data-theme="light"] .pc-role-badge--instructor { background: rgba(124, 58, 237, .08); color: #4c1d95; }
[data-theme="light"] .pc-role-badge--admin      { background: rgba(245, 158, 11, .08); color: #78350f; }

/* Light Theme Polish Sprint · instructor profile */
[data-theme="light"] body.area-instructor .pc-profile-cover--instructor {
    background:
        radial-gradient(760px 300px at 10% -12%, rgba(99, 102, 241, .18), transparent 62%),
        radial-gradient(680px 340px at 96% 0%, rgba(6, 182, 212, .13), transparent 58%),
        linear-gradient(135deg, rgba(255, 255, 255, .96), rgba(241, 245, 255, .88));
    border-color: rgba(129, 140, 248, .22);
    box-shadow: 0 18px 44px -32px rgba(30, 64, 175, .36);
}

[data-theme="light"] body.area-instructor .pc-profile-cover--instructor::after {
    opacity: .18;
}

[data-theme="light"] body.area-instructor .pc-profile-cover--instructor .pc-profile-kicker,
[data-theme="light"] body.area-instructor .pc-profile-cover--instructor .pc-profile-meta {
    color: #475569;
}

[data-theme="light"] body.area-instructor .pc-profile-cover--instructor .pc-profile-name {
    color: #0f172a;
    text-shadow: none;
}

[data-theme="light"] body.area-instructor .pc-profile-cover--instructor .pc-profile-avatar {
    border-color: rgba(255, 255, 255, .92);
    box-shadow: 0 14px 30px -20px rgba(79, 70, 229, .44);
}

[data-theme="light"] body.area-instructor .pc-profile-cover--instructor .pc-action:not(.pc-action--primary) {
    background: rgba(255, 255, 255, .76);
    border-color: rgba(129, 140, 248, .24);
    color: #334155;
}

[data-theme="light"] body.area-instructor .pc-profile-cover--instructor .pc-action:not(.pc-action--primary):hover {
    background: #ffffff;
    color: #4f46e5;
    border-color: rgba(99, 102, 241, .34);
}

[data-theme="light"] body.area-instructor .pc-profile-bio {
    background: linear-gradient(180deg, rgba(255, 255, 255, .86), rgba(248, 250, 255, .78));
    border-color: rgba(129, 140, 248, .20);
    color: #334155;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .7);
}

[data-theme="light"] body.area-instructor .ip-form-shell {
    background: linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(248, 250, 255, .84));
    border-color: rgba(129, 140, 248, .20);
    box-shadow: 0 16px 42px -32px rgba(30, 64, 175, .34);
}

[data-theme="light"] body.area-instructor .ip-field input,
[data-theme="light"] body.area-instructor .ip-field textarea {
    background: rgba(255, 255, 255, .88);
    border-color: rgba(129, 140, 248, .20);
    color: #0f172a;
}

[data-theme="light"] body.area-instructor .ip-form-actions {
    background: linear-gradient(180deg, rgba(248, 250, 255, .88), rgba(255, 255, 255, .95));
    border-top-color: rgba(129, 140, 248, .16);
}

[data-theme="light"] body.area-instructor .pc-profile-ring-card,
[data-theme="light"] body.area-instructor .pc-profile-panel,
[data-theme="light"] body.area-instructor .pc-profile-kpi,
[data-theme="light"] body.area-instructor .pc-profile-quick-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(248, 250, 255, .84));
    border-color: rgba(129, 140, 248, .16);
    box-shadow: 0 12px 34px -28px rgba(30, 64, 175, .30);
}

/* Admin Light Theme Polish Sprint - profile */
[data-theme="light"] body.area-admin .pc-profile-cover--admin {
    background:
        radial-gradient(760px 300px at 10% -12%, rgba(245, 158, 11, .18), transparent 62%),
        radial-gradient(680px 340px at 96% 0%, rgba(168, 85, 247, .14), transparent 58%),
        linear-gradient(135deg, rgba(255, 255, 255, .96), rgba(255, 247, 237, .86) 52%, rgba(250, 245, 255, .90));
    border-color: rgba(245, 158, 11, .20);
    box-shadow: 0 18px 44px -32px rgba(120, 53, 15, .30);
}

[data-theme="light"] body.area-admin .pc-profile-cover--admin::after {
    opacity: .14;
}

[data-theme="light"] body.area-admin .pc-profile-cover--admin .pc-profile-hero,
[data-theme="light"] body.area-admin .pc-profile-cover--admin .pc-profile-hero * {
    text-shadow: none;
}

[data-theme="light"] body.area-admin .pc-profile-cover--admin .pc-profile-name {
    color: #111827;
}

[data-theme="light"] body.area-admin .pc-profile-cover--admin .pc-profile-kicker,
[data-theme="light"] body.area-admin .pc-profile-cover--admin .pc-profile-meta {
    color: #475569;
}

[data-theme="light"] body.area-admin .pc-profile-cover--admin .pc-profile-meta i {
    color: #a855f7;
}

[data-theme="light"] body.area-admin .pc-profile-cover--admin .pc-profile-avatar {
    border-color: rgba(255, 255, 255, .94);
    box-shadow: 0 14px 30px -20px rgba(120, 53, 15, .36);
}

[data-theme="light"] body.area-admin .pc-profile-cover--admin .pc-role-badge--admin {
    background: rgba(245, 158, 11, .12);
    border-color: rgba(245, 158, 11, .26);
    color: #92400e;
}

[data-theme="light"] body.area-admin .pc-profile-cover--admin .pc-rep-badge--leader {
    background: linear-gradient(135deg, rgba(124, 58, 237, .10), rgba(245, 158, 11, .10));
    border-color: rgba(168, 85, 247, .22);
    color: #6d28d9;
    box-shadow: none;
}

[data-theme="light"] body.area-admin .pc-profile-cover--admin .pc-action:not(.pc-action--primary),
[data-theme="light"] body.area-admin .pc-profile-action-btn {
    background: rgba(255, 255, 255, .78);
    border-color: rgba(168, 85, 247, .22);
    color: #334155;
}

[data-theme="light"] body.area-admin .pc-profile-cover--admin .pc-action:not(.pc-action--primary):hover,
[data-theme="light"] body.area-admin .pc-profile-action-btn:hover {
    background: #ffffff;
    border-color: rgba(124, 58, 237, .32);
    color: #7c3aed;
}

[data-theme="light"] body.area-admin .pc-profile-cover--admin .pc-profile-bio,
[data-theme="light"] body.area-admin .pc-profile-bio {
    background: linear-gradient(180deg, rgba(255, 255, 255, .88), rgba(255, 251, 235, .64));
    border-color: rgba(245, 158, 11, .18);
    color: #334155;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .70);
}

[data-theme="light"] body.area-admin .pc-profile-bio--empty {
    color: #64748b;
}

[data-theme="light"] body.area-admin .pc-hero-stats,
[data-theme="light"] body.area-admin .profile-stats {
    gap: .75rem;
    background: linear-gradient(180deg, rgba(255, 255, 255, .92), rgba(248, 250, 255, .84));
    border-color: rgba(168, 85, 247, .16);
    box-shadow: 0 14px 36px -30px rgba(88, 28, 135, .30);
}

[data-theme="light"] body.area-admin .pc-hero-stat,
[data-theme="light"] body.area-admin .profile-stat-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(250, 245, 255, .82));
    border-color: rgba(168, 85, 247, .16);
    box-shadow: 0 12px 34px -28px rgba(88, 28, 135, .30);
}

[data-theme="light"] body.area-admin .pc-hero-stat-label {
    color: #64748b;
}

[data-theme="light"] body.area-admin .pc-hero-stat-value {
    color: #111827;
}

[data-theme="light"] body.area-admin .pc-profile-panel,
[data-theme="light"] body.area-admin .pc-profile-cert {
    background: linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(248, 250, 255, .84));
    border-color: rgba(168, 85, 247, .16);
    box-shadow: 0 12px 34px -28px rgba(88, 28, 135, .28);
}

/* Student Light Theme Polish Sprint - rendered pc/sw profile and empty states. */
[data-theme="light"] body.area-student .pc-empty {
    background:
        radial-gradient(760px 220px at 50% -20%, rgba(59, 130, 246, .12), transparent 62%),
        linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(248, 250, 255, .84));
    border-color: rgba(59, 130, 246, .18);
    color: #334155;
    box-shadow: 0 16px 42px -32px rgba(30, 64, 175, .34);
}

[data-theme="light"] body.area-student .pc-empty h3 {
    color: #0f172a;
}

[data-theme="light"] body.area-student .pc-empty p {
    color: #64748b;
}

[data-theme="light"] body.area-student .pc-empty-icon {
    background: linear-gradient(135deg, rgba(59, 130, 246, .14), rgba(6, 182, 212, .10));
    color: #2563eb;
    box-shadow: 0 12px 24px -18px rgba(37, 99, 235, .42);
}

[data-theme="light"] body.area-student .pc-profile-cover--student {
    background:
        radial-gradient(760px 300px at 10% -12%, rgba(59, 130, 246, .18), transparent 62%),
        radial-gradient(680px 340px at 96% 0%, rgba(6, 182, 212, .14), transparent 58%),
        linear-gradient(135deg, rgba(255, 255, 255, .96), rgba(239, 249, 255, .86) 52%, rgba(245, 251, 255, .90));
    border-color: rgba(59, 130, 246, .20);
    box-shadow: 0 18px 44px -32px rgba(30, 64, 175, .32);
}

[data-theme="light"] body.area-student .pc-profile-cover--student::after {
    opacity: .14;
}

[data-theme="light"] body.area-student .pc-profile-cover--student .pc-profile-hero,
[data-theme="light"] body.area-student .pc-profile-cover--student .pc-profile-hero * {
    text-shadow: none;
}

[data-theme="light"] body.area-student .pc-profile-cover--student .pc-profile-name {
    color: #0f172a;
}

[data-theme="light"] body.area-student .pc-profile-cover--student .pc-profile-kicker,
[data-theme="light"] body.area-student .pc-profile-cover--student .pc-profile-meta {
    color: #475569;
}

[data-theme="light"] body.area-student .pc-profile-cover--student .pc-profile-meta i {
    color: #0284c7;
}

[data-theme="light"] body.area-student .pc-profile-cover--student .pc-profile-avatar {
    border-color: rgba(255, 255, 255, .94);
    box-shadow: 0 14px 30px -20px rgba(37, 99, 235, .38);
}

[data-theme="light"] body.area-student .pc-profile-cover--student .pc-action:not(.pc-action--primary) {
    background: rgba(255, 255, 255, .78);
    border-color: rgba(59, 130, 246, .22);
    color: #334155;
}

[data-theme="light"] body.area-student .pc-profile-cover--student .pc-action:not(.pc-action--primary):hover {
    background: #ffffff;
    border-color: rgba(37, 99, 235, .32);
    color: #2563eb;
}

[data-theme="light"] body.area-student .pc-profile-bio {
    background: linear-gradient(180deg, rgba(255, 255, 255, .88), rgba(239, 249, 255, .66));
    border-color: rgba(59, 130, 246, .18);
    color: #334155;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .70);
}

[data-theme="light"] body.area-student .pc-profile-bio--empty {
    color: #64748b;
}

[data-theme="light"] body.area-student .pc-hero-stats {
    background: linear-gradient(180deg, rgba(255, 255, 255, .92), rgba(248, 250, 255, .84));
    border-color: rgba(59, 130, 246, .16);
    box-shadow: 0 14px 36px -30px rgba(30, 64, 175, .32);
}

[data-theme="light"] body.area-student .pc-hero-stat {
    background: linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(239, 249, 255, .82));
    border-color: rgba(59, 130, 246, .16);
    box-shadow: 0 12px 34px -28px rgba(30, 64, 175, .30);
}

[data-theme="light"] body.area-student .pc-hero-stat-label {
    color: #64748b;
}

[data-theme="light"] body.area-student .pc-hero-stat-value {
    color: #0f172a;
}

[data-theme="light"] body.area-student .sw-panel,
[data-theme="light"] body.area-student .sw-form,
[data-theme="light"] body.area-student .sw-empty {
    background: linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(248, 250, 255, .84));
    border-color: rgba(59, 130, 246, .16);
    box-shadow: 0 12px 34px -28px rgba(30, 64, 175, .30);
}