/* =========================================================
   Al-Bayan+  ·  Modern × Neoclassical Engineering UI
   ========================================================= */

:root {
    --neo-ink: #0d1b2a;
    --neo-navy: #1b2a4a;
    --neo-slate: #2c3e5a;
    --neo-marble: #f4f6f8;
    --neo-paper: #fbfcfd;
    --neo-line: #c9d2df;
    --neo-line-strong: #9aabbf;
    --neo-brass: #b08d57;
    --neo-brass-soft: #d4bc8e;
    --neo-brass-deep: #8a6a3a;
    --neo-blue: #2457d6;
    --neo-blue-bright: #3d6ff0;
    --neo-muted: #5c6b80;
    --radius: 0.85rem;
    --radius-lg: 1.15rem;
    --shadow-neo: 0 14px 40px -24px rgba(13, 27, 42, 0.4);
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    /* Unified modern bilingual stack: Arabic + English */
    --font-ui: 'IBM Plex Sans Arabic', 'IBM Plex Sans', 'Segoe UI', Tahoma, sans-serif;
    --font-display: var(--font-ui);
    --font-brand: 'IBM Plex Sans', 'IBM Plex Sans Arabic', 'Segoe UI', sans-serif;
    --font-body: var(--font-ui);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--neo-ink);
    background:
        radial-gradient(900px 420px at 100% -5%, rgba(176, 141, 87, 0.10), transparent 55%),
        radial-gradient(800px 380px at -5% 0%, rgba(36, 87, 214, 0.08), transparent 50%),
        linear-gradient(180deg, #f7f8fa 0%, #eef1f5 100%);
    background-attachment: fixed;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

button, input, select, textarea, optgroup {
    font-family: inherit;
}

table, th, td, label, a {
    font-family: inherit;
}

::selection {
    background: rgba(176, 141, 87, 0.25);
    color: var(--neo-ink);
}

/* Classical meander / engineering grid overlay */
.app-ornament {
    background-image:
        linear-gradient(rgba(27, 42, 74, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(27, 42, 74, 0.035) 1px, transparent 1px);
    background-size: 32px 32px;
}

/* ---------- Type ---------- */
.brand-mark {
    font-family: var(--font-brand);
    letter-spacing: -0.02em;
    font-weight: 700;
}

.neo-display {
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.35;
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(1.45rem, 2.2vw, 1.85rem);
    font-weight: 700;
    color: var(--neo-ink);
    letter-spacing: -0.015em;
    line-height: 1.35;
}

.page-subtitle {
    color: var(--neo-muted);
    font-size: 0.92rem;
    margin-top: 0.35rem;
    line-height: 1.6;
}

.title-emoji {
    font-style: normal;
    font-size: 0.92em;
    margin-inline-start: 0.25rem;
    filter: saturate(1.05);
}

/* ---------- Motion ---------- */
.fade-in { animation: fadeIn 0.48s var(--ease) both; }
.rise-in { animation: riseIn 0.55s var(--ease) both; }
.stagger > * { animation: riseIn 0.5s var(--ease) both; }
.stagger > *:nth-child(1) { animation-delay: .02s; }
.stagger > *:nth-child(2) { animation-delay: .06s; }
.stagger > *:nth-child(3) { animation-delay: .10s; }
.stagger > *:nth-child(4) { animation-delay: .14s; }
.stagger > *:nth-child(5) { animation-delay: .18s; }
.stagger > *:nth-child(6) { animation-delay: .22s; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes riseIn {
    from { opacity: 0; transform: translateY(14px) scale(.985); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes livePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(5, 150, 105, .4); }
    70% { box-shadow: 0 0 0 8px rgba(5, 150, 105, 0); }
}

/* ---------- Surfaces: modern glass + neoclassical frame ---------- */
.glass-panel {
    background: rgba(251, 252, 253, 0.88);
    backdrop-filter: blur(16px) saturate(1.15);
    -webkit-backdrop-filter: blur(16px) saturate(1.15);
    border: 1px solid rgba(201, 210, 223, 0.85);
    box-shadow: var(--shadow-neo);
}

.surface-card {
    background: var(--neo-paper);
    border: 1px solid var(--neo-line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-neo);
    position: relative;
    transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}

.surface-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.65);
}

.surface-card:hover {
    transform: translateY(-2px);
    border-color: var(--neo-brass-soft);
    box-shadow: 0 18px 44px -26px rgba(27, 42, 74, 0.38);
}

.panel-quiet {
    background: linear-gradient(180deg, #fff, #f7f9fb);
    border: 1px solid var(--neo-line);
    border-radius: var(--radius);
}

.neo-frame {
    position: relative;
    border: 1px solid var(--neo-line-strong);
    border-radius: var(--radius-lg);
    background: var(--neo-paper);
    box-shadow: var(--shadow-neo);
}

.neo-frame::after {
    content: "";
    position: absolute;
    inset: 6px;
    border: 1px solid rgba(176, 141, 87, 0.28);
    border-radius: calc(var(--radius-lg) - 4px);
    pointer-events: none;
}

.neo-rule {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--neo-brass), transparent);
    opacity: 0.55;
    border: 0;
    margin: 0.75rem 0;
}

.neo-corner {
    position: relative;
}
.neo-corner::before,
.neo-corner::after {
    content: "";
    position: absolute;
    width: 14px;
    height: 14px;
    border-color: var(--neo-brass);
    border-style: solid;
    opacity: 0.55;
    pointer-events: none;
}
.neo-corner::before {
    top: 10px; inset-inline-start: 10px;
    border-width: 1.5px 0 0 1.5px;
}
.neo-corner::after {
    bottom: 10px; inset-inline-end: 10px;
    border-width: 0 1.5px 1.5px 0;
}

/* Hero strip — classical navy + modern gradient */
.hero-strip {
    position: relative;
    overflow: hidden;
    border-radius: 1.25rem;
    background:
        radial-gradient(520px 180px at 92% 0%, rgba(212, 188, 142, 0.22), transparent 60%),
        linear-gradient(125deg, #0d1b2a 0%, #1b2a4a 42%, #2457d6 100%);
    color: #fff;
    box-shadow: 0 22px 48px -28px rgba(13, 27, 42, 0.65);
    border: 1px solid rgba(212, 188, 142, 0.2);
}

.hero-strip::before {
    content: "";
    position: absolute;
    inset: 8px;
    border: 1px solid rgba(212, 188, 142, 0.28);
    border-radius: 1rem;
    pointer-events: none;
}

.hero-strip::after {
    content: "";
    position: absolute;
    inset: 0;
    opacity: 0.22;
    background-image:
        repeating-linear-gradient(90deg, transparent 0 18px, rgba(255,255,255,0.04) 18px 19px),
        repeating-linear-gradient(0deg, transparent 0 18px, rgba(255,255,255,0.03) 18px 19px);
    pointer-events: none;
}

.hero-strip .page-title,
.hero-strip h1 {
    font-family: var(--font-display);
    color: #fff;
    letter-spacing: -0.015em;
    line-height: 1.35;
}

.eng-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.28rem 0.7rem;
    border-radius: 0.45rem;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    font-family: var(--font-brand);
    background: rgba(212, 188, 142, 0.16);
    color: var(--neo-brass-soft);
    border: 1px solid rgba(212, 188, 142, 0.35);
}

/* ---------- Buttons ---------- */
.btn-primary {
    background: linear-gradient(135deg, #3d6ff0 0%, #2457d6 55%, #1b2a4a 140%);
    color: #fff;
    border-radius: 0.75rem;
    font-weight: 600;
    border: 1px solid rgba(212, 188, 142, 0.15);
    transition: transform .18s var(--ease), filter .18s ease;
    box-shadow: 0 12px 28px -16px rgba(36, 87, 214, 0.75);
}
.btn-primary:hover { filter: brightness(1.06); transform: translateY(-1px); }

.btn-ghost {
    background: rgba(255,255,255,0.8);
    border: 1px solid var(--neo-line-strong);
    color: var(--neo-ink);
    border-radius: 0.75rem;
    font-weight: 600;
}
.btn-ghost:hover { border-color: var(--neo-brass); background: #fff; }

.btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    border-radius: 0.75rem;
    font-weight: 600;
    box-shadow: 0 12px 28px -16px rgba(5, 150, 105, 0.75);
}

.btn-brass {
    background: linear-gradient(135deg, #d4bc8e, #b08d57 60%, #8a6a3a);
    color: #1b1408;
    border-radius: 0.75rem;
    font-weight: 700;
}

/* ---------- Forms ---------- */
.input-modern {
    border: 1px solid var(--neo-line);
    border-radius: 0.75rem;
    background: #fff;
    transition: border-color .15s ease, box-shadow .15s ease;
}
.input-modern:hover { border-color: var(--neo-line-strong); }
.input-modern:focus {
    outline: none;
    border-color: var(--neo-blue);
    box-shadow: 0 0 0 4px rgba(36, 87, 214, 0.12);
}

/* ---------- Sidebar: classical column ---------- */
.sidebar-shell {
    width: 17.25rem;
    background:
        linear-gradient(90deg, rgba(212,188,142,0.08) 0 1px, transparent 1px),
        radial-gradient(380px 200px at 0% 0%, rgba(212,188,142,0.18), transparent 55%),
        linear-gradient(175deg, #13233f 0%, #0d1b2a 55%, #0a1522 100%);
    border-left: 1px solid rgba(212, 188, 142, 0.18);
    box-shadow: inset -1px 0 0 rgba(255,255,255,0.04);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 0.85rem;
    border-radius: 0.7rem;
    color: rgba(226, 232, 240, 0.8);
    font-size: 0.92rem;
    font-weight: 500;
    transition: background .18s ease, color .18s ease, transform .18s ease;
}
.nav-link:hover {
    background: rgba(255,255,255,0.06);
    color: #fff;
    transform: translateX(-2px);
}
.nav-link.active {
    background: linear-gradient(135deg, rgba(61,111,240,0.95), rgba(36,87,214,0.9));
    color: #fff;
    box-shadow: 0 10px 22px -14px rgba(61, 111, 240, 0.9);
    border: 1px solid rgba(212,188,142,0.2);
}

.nav-section-label {
    padding: 0 0.85rem 0.4rem;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: rgba(212, 188, 142, 0.55);
    text-transform: uppercase;
    font-family: var(--font-brand);
}

/* ---------- Layout ---------- */
.page-shell { max-width: 76rem; margin-inline: auto; }
.main-canvas { flex: 1; padding: 1.35rem 1.2rem 2rem; overflow: auto; }
@media (min-width: 768px) {
    .main-canvas { padding: 1.7rem 1.7rem 2.4rem; }
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border-radius: 0.45rem;
    padding: 0.22rem 0.65rem;
    font-size: 0.72rem;
    font-weight: 700;
}

.live-dot {
    width: 0.5rem; height: 0.5rem; border-radius: 999px;
    background: #10b981; animation: livePulse 1.8s ease infinite;
}

/* ---------- Tables ---------- */
.app-table { width: 100%; border-collapse: separate; border-spacing: 0; }
.app-table thead th {
    background: linear-gradient(180deg, #f8fafc, #eef2f6);
    color: var(--neo-muted);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.85rem 0.9rem;
    border-bottom: 1px solid var(--neo-line);
    border-top: 1px solid rgba(176,141,87,0.25);
}
.app-table tbody td {
    padding: 0.85rem 0.9rem;
    border-bottom: 1px solid rgba(201,210,223,0.65);
}
.app-table tbody tr:hover { background: rgba(238, 242, 255, 0.55); }

/* ---------- Modals ---------- */
.modal-scrim {
    background: rgba(13, 27, 42, 0.58);
    backdrop-filter: blur(6px);
}
.modal-panel {
    background: var(--neo-paper);
    border-radius: 1.25rem;
    border: 1px solid var(--neo-line-strong);
    box-shadow: 0 30px 80px -30px rgba(13, 27, 42, 0.55);
    position: relative;
}
.modal-panel::before {
    content: "";
    position: absolute;
    inset: 7px;
    border: 1px solid rgba(176,141,87,0.25);
    border-radius: 1rem;
    pointer-events: none;
}

/* ---------- Auth / public ---------- */
.login-hero {
    background:
        radial-gradient(800px 360px at 12% -8%, rgba(212,188,142,0.22), transparent 55%),
        radial-gradient(700px 360px at 90% 15%, rgba(61,111,240,0.28), transparent 50%),
        linear-gradient(155deg, #0d1b2a 0%, #1b2a4a 45%, #2457d6 85%, #3d6ff0 120%);
}
.login-hero-mesh {
    background-image:
        linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px);
    background-size: 42px 42px;
    mask-image: radial-gradient(ellipse at center, black 25%, transparent 75%);
}

.auth-card { border-radius: 1.35rem; overflow: hidden; }

.session-pick {
    border: 1.5px solid var(--neo-line);
    border-radius: 0.9rem;
    transition: border-color .18s ease, background .18s ease, transform .18s ease;
}
.session-pick:hover { border-color: var(--neo-brass-soft); transform: translateY(-1px); }
.session-pick.is-active {
    border-color: var(--neo-blue);
    background: linear-gradient(135deg, rgba(238,242,255,.95), #fff);
    box-shadow: 0 10px 24px -18px rgba(36,87,214,.5);
}

.stat-tile { position: relative; overflow: hidden; }
.stat-tile::after {
    content: "";
    position: absolute;
    inset-inline-end: -10px; top: -10px;
    width: 56px; height: 56px; border-radius: 999px;
    background: radial-gradient(circle, rgba(176,141,87,0.14), transparent 70%);
}

.footer-bar {
    border-top: 1px solid rgba(201,210,223,0.9);
    background: rgba(251,252,253,0.82);
    backdrop-filter: blur(12px);
}

.qr-frame {
    border-radius: 1.25rem;
    border: 1px solid rgba(176,141,87,0.35);
    background: #fff;
    box-shadow: 0 24px 50px -30px rgba(27,42,74,0.4), inset 0 0 0 6px rgba(244,246,248,0.9);
}

.empty-state { text-align: center; padding: 3rem 1.5rem; color: var(--neo-muted); }

.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--neo-brass-deep);
    font-family: var(--font-brand);
}

.eng-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.15rem 0.55rem;
    border-radius: 0.4rem;
    font-size: 0.7rem;
    font-weight: 600;
    background: rgba(176,141,87,0.1);
    color: var(--neo-brass-deep);
    border: 1px solid rgba(176,141,87,0.25);
}

.scrollbar-thin::-webkit-scrollbar { width: 8px; height: 8px; }
.scrollbar-thin::-webkit-scrollbar-thumb { background: rgba(148,163,184,.45); border-radius: 999px; }

/* HADIR dark theme for teacher, admin, and classic student pages */
html[data-theme="dark"] {
    --neo-ink: #F8FAFC;
    --neo-navy: #E2E8F0;
    --neo-slate: #CBD5E1;
    --neo-marble: #0B1220;
    --neo-paper: #0F172A;
    --neo-line: rgba(148, 163, 184, 0.18);
    --neo-line-strong: rgba(148, 163, 184, 0.32);
    --neo-muted: #94A3B8;
    --shadow-neo: 0 16px 36px -22px rgba(0, 0, 0, 0.7);
}

html[data-theme="dark"] body {
    color: #F8FAFC;
    background:
        radial-gradient(900px 420px at 100% -5%, rgba(13, 148, 136, 0.12), transparent 55%),
        linear-gradient(180deg, #080F1C 0%, #0B1220 100%);
}

html[data-theme="dark"] .app-ornament {
    background-image:
        linear-gradient(rgba(148, 163, 184, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.05) 1px, transparent 1px);
}

html[data-theme="dark"] .surface-card,
html[data-theme="dark"] .glass-panel,
html[data-theme="dark"] .auth-card,
html[data-theme="dark"] .qr-frame {
    background: #0F172A;
    color: #F8FAFC;
    border-color: rgba(148, 163, 184, 0.14);
}

html[data-theme="dark"] .surface-card::before {
    box-shadow: inset 0 0 0 1px rgba(148, 163, 184, 0.12);
}

html[data-theme="dark"] .input-modern,
html[data-theme="dark"] input:not([type="checkbox"]):not([type="radio"]),
html[data-theme="dark"] select,
html[data-theme="dark"] textarea {
    background: #162235;
    color: #F8FAFC;
    border-color: rgba(148, 163, 184, 0.22);
}

html[data-theme="dark"] input::placeholder,
html[data-theme="dark"] textarea::placeholder {
    color: #94A3B8;
}

html[data-theme="dark"] .input-modern:focus,
html[data-theme="dark"] input:focus,
html[data-theme="dark"] select:focus,
html[data-theme="dark"] textarea:focus {
    outline: none;
    border-color: #2DD4BF;
    box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.2);
}

html[data-theme="dark"] .btn-ghost {
    background: #162235;
    color: #F8FAFC;
    border-color: rgba(148, 163, 184, 0.2);
}

html[data-theme="dark"] .btn-ghost:hover { background: #1C2B40; }

html[data-theme="dark"] .app-table thead th {
    background: #121B2E;
    color: #94A3B8;
    border-color: rgba(148, 163, 184, 0.14);
}

html[data-theme="dark"] .app-table td {
    color: #E2E8F0;
    border-color: rgba(148, 163, 184, 0.1);
    background: transparent;
}

html[data-theme="dark"] .footer-bar {
    background: rgba(15, 23, 42, 0.92);
    border-color: rgba(148, 163, 184, 0.14);
    color: #94A3B8;
}

html[data-theme="dark"] .page-title,
html[data-theme="dark"] .text-slate-900,
html[data-theme="dark"] .text-slate-800,
html[data-theme="dark"] .text-gray-900,
html[data-theme="dark"] .text-gray-800,
html[data-theme="dark"] .text-gray-700,
html[data-theme="dark"] .text-\[\#0F172A\],
html[data-theme="dark"] .text-\[\#14213D\] {
    color: #F8FAFC !important;
}

html[data-theme="dark"] .text-slate-500,
html[data-theme="dark"] .text-slate-600,
html[data-theme="dark"] .text-slate-400,
html[data-theme="dark"] .text-gray-500,
html[data-theme="dark"] .text-gray-600 {
    color: #94A3B8 !important;
}

html[data-theme="dark"] .text-\[\#0D9488\],
html[data-theme="dark"] .text-\[\#0F766E\],
html[data-theme="dark"] .text-\[\#16B8B0\] {
    color: #2DD4BF !important;
}

html[data-theme="dark"] .bg-white,
html[data-theme="dark"] .bg-slate-50,
html[data-theme="dark"] .bg-gray-50,
html[data-theme="dark"] .bg-green-50,
html[data-theme="dark"] .bg-rose-50,
html[data-theme="dark"] .bg-teal-50,
html[data-theme="dark"] .bg-\[\#F6F8FC\] {
    background-color: #162235 !important;
}

html[data-theme="dark"] .border-slate-50,
html[data-theme="dark"] .border-slate-100,
html[data-theme="dark"] .border-slate-200,
html[data-theme="dark"] .border-gray-200,
html[data-theme="dark"] .border-gray-300,
html[data-theme="dark"] .border-teal-200,
html[data-theme="dark"] .border-green-200,
html[data-theme="dark"] .border-rose-200 {
    border-color: rgba(148, 163, 184, 0.16) !important;
}

html[data-theme="dark"] .text-rose-600,
html[data-theme="dark"] .text-rose-700 { color: #FDA4AF !important; }
html[data-theme="dark"] .text-green-800,
html[data-theme="dark"] .text-green-600 { color: #5EEAD4 !important; }

html[data-theme="dark"] option {
    background: #0F172A;
    color: #F8FAFC;
}