/* =========================================================
   Yash Classes 0.1 — Design System
   Palette: Ink Navy #0F1B2D, Deep Indigo #16233B, Paper #F7F4EC,
            Marigold #E8A33D, Signal Teal #2FA097, Rose #D65B5B
   Type: 'Fraunces' (display/serif) + 'Inter' (body/UI)
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700&family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --ink: #0F1B2D;
    --indigo: #16233B;
    --indigo-2: #1E2E4A;
    --paper: #F7F4EC;
    --paper-dim: #ECE7D9;
    --marigold: #E8A33D;
    --marigold-dark: #C9862A;
    --teal: #2FA097;
    --rose: #D65B5B;
    --ink-60: rgba(15,27,45,0.6);
    --ink-40: rgba(15,27,45,0.4);
    --border: rgba(15,27,45,0.12);
    --radius: 14px;
    --shadow: 0 8px 24px rgba(15,27,45,0.08);
    --shadow-lg: 0 20px 50px rgba(15,27,45,0.18);
    font-size: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: 'Inter', -apple-system, sans-serif;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

body.dark {
    --paper: #0F1B2D;
    --paper-dim: #16233B;
    --ink: #F1EEE4;
    --border: rgba(241,238,228,0.12);
    background: var(--paper);
    color: var(--ink);
}

h1, h2, h3, h4, .display {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 600;
    line-height: 1.15;
    margin: 0 0 0.4em;
    letter-spacing: -0.01em;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 22px; border-radius: 999px; border: none;
    font-weight: 600; font-size: 0.95rem; transition: transform .15s ease, box-shadow .15s ease;
}
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-accent { background: var(--marigold); color: var(--ink); }
.btn-accent:hover { background: var(--marigold-dark); transform: translateY(-2px); }
.btn-outline { background: transparent; border: 1.5px solid var(--border); color: var(--ink); }
.btn-outline:hover { border-color: var(--ink); }
.btn-danger { background: var(--rose); color: #fff; }
.btn-block { width: 100%; }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; }

/* ---------- Top Nav ---------- */
.navbar {
    position: sticky; top: 0; z-index: 100;
    background: var(--paper); border-bottom: 1px solid var(--border);
    backdrop-filter: blur(8px);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: 'Fraunces', serif; font-weight: 700; font-size: 1.35rem; }
.brand .mark { width: 36px; height: 36px; border-radius: 10px; background: var(--ink); color: var(--marigold); display: flex; align-items: center; justify-content: center; font-size: 1.1rem; }
.nav-links { display: flex; align-items: center; gap: 28px; font-weight: 500; }
.nav-links a { opacity: .8; transition: opacity .15s; }
.nav-links a:hover { opacity: 1; }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.avatar { width: 38px; height: 38px; border-radius: 50%; background: var(--indigo); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; overflow: hidden; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Search ---------- */
.search-bar { position: relative; flex: 1; max-width: 420px; }
.search-bar input {
    width: 100%; padding: 11px 16px 11px 42px; border-radius: 999px; border: 1px solid var(--border);
    background: var(--paper-dim); font-size: 0.9rem; color: var(--ink);
}
.search-bar svg { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); opacity: .5; }

/* ---------- Hero / Banner Slider ---------- */
.hero-slider { position: relative; overflow: hidden; border-radius: 20px; margin: 24px 0; }
.slide {
    display: none; background: linear-gradient(120deg, var(--ink), var(--indigo-2));
    color: var(--paper); padding: 64px 48px; min-height: 280px; position: relative;
}
.slide.active { display: flex; flex-direction: column; justify-content: center; }
.slide .eyebrow { color: var(--marigold); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; font-size: .78rem; margin-bottom: 10px; }
.slide h2 { font-size: 2.4rem; max-width: 560px; color: var(--paper); }
.slide p { max-width: 480px; opacity: .8; }
.slide-dots { display: flex; gap: 8px; position: absolute; bottom: 20px; left: 48px; }
.slide-dots span { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.3); cursor: pointer; }
.slide-dots span.active { background: var(--marigold); width: 22px; border-radius: 4px; }

/* ---------- Section headers ---------- */
.section { padding: 44px 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 22px; }
.section-head h2 { font-size: 1.6rem; }
.section-head a { font-size: .88rem; font-weight: 600; color: var(--teal); }

/* ---------- Category chips ---------- */
.chip-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 28px; }
.chip {
    padding: 9px 18px; border-radius: 999px; border: 1px solid var(--border);
    font-size: .88rem; font-weight: 600; background: var(--paper-dim);
}
.chip.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* ---------- Course cards ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.course-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
    transition: transform .18s ease, box-shadow .18s ease;
}
body.dark .course-card { background: var(--indigo); }
.course-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.course-thumb { height: 150px; background: linear-gradient(135deg, var(--indigo), var(--ink)); position: relative; }
.course-thumb .badge { position: absolute; top: 10px; left: 10px; background: var(--marigold); color: var(--ink); font-size: .72rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; }
.course-body { padding: 16px; }
.course-cat { font-size: .74rem; font-weight: 700; color: var(--teal); text-transform: uppercase; letter-spacing: .05em; }
.course-title { font-family: 'Fraunces', serif; font-size: 1.05rem; margin: 6px 0 10px; }
.course-meta { display: flex; align-items: center; justify-content: space-between; }
.price { font-weight: 800; font-size: 1.05rem; }
.price.free { color: var(--teal); }
.progress-track { height: 6px; background: var(--paper-dim); border-radius: 999px; margin-top: 10px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--marigold); border-radius: 999px; }

/* ---------- Forms ---------- */
.auth-wrap { min-height: calc(100vh - 70px); display: flex; align-items: center; justify-content: center; padding: 40px 20px; }
.auth-card { background: #fff; border: 1px solid var(--border); border-radius: 20px; box-shadow: var(--shadow); padding: 40px; width: 100%; max-width: 420px; }
body.dark .auth-card { background: var(--indigo); }
.auth-card h1 { font-size: 1.6rem; }
.auth-sub { color: var(--ink-60); margin-bottom: 24px; font-size: .92rem; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: 6px; }
.field input, .field select, .field textarea {
    width: 100%; padding: 12px 14px; border-radius: 10px; border: 1.5px solid var(--border);
    background: var(--paper); color: var(--ink); font-size: .95rem; font-family: inherit;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--marigold); border-color: transparent; }
.field-hint { font-size: .78rem; color: var(--ink-60); margin-top: 4px; }
.auth-switch { text-align: center; margin-top: 18px; font-size: .9rem; color: var(--ink-60); }
.auth-switch a { color: var(--teal); font-weight: 600; }
.tab-row { display: flex; background: var(--paper-dim); border-radius: 999px; padding: 4px; margin-bottom: 22px; }
.tab-row a { flex: 1; text-align: center; padding: 9px; border-radius: 999px; font-weight: 600; font-size: .88rem; }
.tab-row a.active { background: var(--ink); color: var(--paper); }

/* ---------- Alerts ---------- */
.alert { padding: 13px 16px; border-radius: 10px; font-size: .9rem; margin-bottom: 16px; font-weight: 500; }
.alert-success { background: rgba(47,160,151,0.12); color: var(--teal); }
.alert-error { background: rgba(214,91,91,0.12); color: var(--rose); }
.alert-info { background: rgba(15,27,45,0.06); color: var(--ink); }

/* ---------- Dashboard layout ---------- */
.dash-layout { display: grid; grid-template-columns: 240px 1fr; gap: 0; min-height: calc(100vh - 70px); }
.sidebar { border-right: 1px solid var(--border); padding: 24px 14px; }
.sidebar a { display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-radius: 10px; font-weight: 500; font-size: .92rem; color: var(--ink-60); margin-bottom: 4px; }
.sidebar a.active, .sidebar a:hover { background: var(--paper-dim); color: var(--ink); }
.dash-main { padding: 32px; }
.dash-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 26px; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 16px; margin-bottom: 30px; }
.stat-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
body.dark .stat-card { background: var(--indigo); }
.stat-card .num { font-family: 'Fraunces', serif; font-size: 2rem; font-weight: 700; }
.stat-card .label { color: var(--ink-60); font-size: .85rem; font-weight: 600; }

/* ---------- Tables ---------- */
.table-wrap { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
body.dark .table-wrap { background: var(--indigo); }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: var(--paper-dim); font-weight: 700; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-60); }
tr:last-child td { border-bottom: none; }
.status-pill { padding: 4px 12px; border-radius: 999px; font-size: .74rem; font-weight: 700; }
.status-pending { background: rgba(232,163,61,0.18); color: var(--marigold-dark); }
.status-active, .status-approved { background: rgba(47,160,151,0.15); color: var(--teal); }
.status-rejected, .status-blocked { background: rgba(214,91,91,0.15); color: var(--rose); }

/* ---------- Video player ---------- */
.player-wrap { background: var(--ink); border-radius: 16px; overflow: hidden; }
.video-el { width: 100%; display: block; background: #000; max-height: 70vh; }
.player-controls { display: flex; align-items: center; gap: 14px; padding: 14px 18px; color: #fff; flex-wrap: wrap; }
.speed-select { background: var(--indigo-2); color: #fff; border: none; padding: 7px 10px; border-radius: 8px; }

/* ---------- Test / MCQ ---------- */
.question-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 16px; }
body.dark .question-card { background: var(--indigo); }
.option-row { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border: 1.5px solid var(--border); border-radius: 10px; margin-bottom: 10px; cursor: pointer; }
.option-row:hover { border-color: var(--marigold); }
.option-row input { accent-color: var(--marigold); }
.timer-badge { background: var(--rose); color: #fff; padding: 8px 16px; border-radius: 999px; font-weight: 700; }

/* ---------- Footer ---------- */
footer { background: var(--ink); color: var(--paper); padding: 50px 0 24px; margin-top: 60px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; margin-bottom: 30px; }
footer h4 { color: var(--marigold); font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 14px; }
footer a { display: block; opacity: .7; font-size: .9rem; margin-bottom: 9px; }
footer a:hover { opacity: 1; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; font-size: .82rem; opacity: .6; display: flex; justify-content: space-between; }

/* ---------- Floating support ---------- */
.fab-group { position: fixed; bottom: 24px; right: 24px; display: flex; flex-direction: column; gap: 12px; z-index: 200; }
.fab { width: 52px; height: 52px; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-lg); font-size: 1.3rem; color: #fff; }
.fab.whatsapp { background: #25D366; }
.fab.telegram { background: #229ED9; }

/* ---------- Utility ---------- */
.flex { display: flex; } .items-center { align-items: center; } .justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; } .gap-16 { gap: 16px; } .mt-16 { margin-top: 16px; } .mb-16 { margin-bottom: 16px; }
.text-center { text-align: center; } .muted { color: var(--ink-60); }
.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
body.dark .card { background: var(--indigo); }
.empty-state { text-align: center; padding: 60px 20px; color: var(--ink-60); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .dash-layout { grid-template-columns: 1fr; }
    .sidebar { display: flex; overflow-x: auto; border-right: none; border-bottom: 1px solid var(--border); padding: 12px; }
    .sidebar a { white-space: nowrap; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
    .nav-links { display: none; }
    .slide h2 { font-size: 1.6rem; }
    .slide { padding: 40px 24px; }
    .footer-grid { grid-template-columns: 1fr; }
    .search-bar { display: none; }
}