/* ==================================================================
   PRO ENGLISH ACADEMY — Complete Design System
   ================================================================== */

/* ---------- FONTS ---------- */
@font-face {
    font-family: 'Rabar';
    src: url('fonts/rabar.woff') format('woff');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* ---------- DESIGN TOKENS ---------- */
:root {
    /* Brand palette — academic navy + royal blue */
    --navy-900: #0a1834;
    --navy-800: #0f2557;
    --navy-700: #16327a;
    --blue-700: #1e40af;
    --blue-600: #2563eb;
    --blue-500: #3b82f6;
    --blue-400: #60a5fa;
    --blue-100: #dbeafe;
    --blue-50:  #eff6ff;

    /* Neutrals */
    --ink-900: #0f172a;
    --ink-800: #1e293b;
    --ink-700: #334155;
    --ink-600: #475569;
    --ink-500: #64748b;
    --ink-400: #94a3b8;
    --ink-300: #cbd5e1;
    --ink-200: #e2e8f0;
    --ink-100: #f1f5f9;
    --ink-50:  #f8fafc;
    --paper:   #ffffff;
    --canvas:  #f4f7fb;

    /* Semantic */
    --success: #10b981;
    --success-bg: #ecfdf5;
    --danger:  #ef4444;
    --danger-bg: #fef2f2;
    --warning: #f59e0b;
    --warning-bg: #fffbeb;
    --purple:  #8b5cf6;

    /* Elevation */
    --shadow-xs: 0 1px 2px rgba(15,23,42,0.04);
    --shadow-sm: 0 2px 8px -2px rgba(15,23,42,0.06), 0 1px 3px rgba(15,23,42,0.04);
    --shadow-md: 0 8px 24px -8px rgba(15,23,42,0.10), 0 2px 6px -2px rgba(15,23,42,0.05);
    --shadow-lg: 0 20px 48px -20px rgba(15,23,42,0.18), 0 8px 16px -8px rgba(15,23,42,0.08);
    --shadow-xl: 0 32px 64px -32px rgba(15,23,42,0.25);

    /* Radii */
    --r-xs: 8px;
    --r-sm: 10px;
    --r-md: 14px;
    --r-lg: 18px;
    --r-xl: 22px;
    --r-2xl: 28px;
    --r-pill: 999px;

    /* Motion */
    --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
    --t-fast: 0.15s var(--ease);
    --t: 0.24s var(--ease);
    --t-slow: 0.4s var(--ease);

    /* Layout */
    --page-max: 1240px;
    --gutter: 24px;
}

/* ---------- RESET ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; }
img, video, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

/* ---------- BASE ---------- */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--canvas);
    color: var(--ink-800);
    line-height: 1.6;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-bottom: 60px;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--ink-900);
    font-weight: 700;
    letter-spacing: -0.015em;
    line-height: 1.25;
    margin: 0 0 0.5em;
}
h1 { font-size: 1.9rem; font-weight: 800; }
h2 { font-size: 1.45rem; }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }
p  { margin: 0 0 1em; }

.ku-text {
    font-family: 'Rabar', 'Inter', sans-serif !important;
    direction: rtl;
    unicode-bidi: isolate;
}

/* ==================================================================
   ADMIN NAVBAR
   ================================================================== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 500;
    background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-800) 55%, var(--blue-700) 100%);
    color: #fff;
    box-shadow: 0 4px 24px -8px rgba(10,24,52,0.5);
    padding: 0 var(--gutter);
}
.nav-inner {
    max-width: var(--page-max);
    margin: 0 auto;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.1rem;
    letter-spacing: -0.01em;
    color: #fff;
}
.nav-logo span { color: var(--blue-400); }
.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}
.nav-links a {
    padding: 9px 16px;
    border-radius: var(--r-pill);
    color: rgba(255,255,255,0.82);
    font-size: 0.88rem;
    font-weight: 600;
    transition: var(--t-fast);
}
.nav-links a:hover { background: rgba(255,255,255,0.1); color: #fff; }
.nav-links a.active { background: rgba(255,255,255,0.16); color: #fff; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.15); }
.nav-links a.logout { background: rgba(239,68,68,0.14); color: #fca5a5; }
.nav-links a.logout:hover { background: var(--danger); color: #fff; }
.nav-user {
    padding: 6px 14px;
    border-radius: var(--r-pill);
    background: rgba(147,197,253,0.14);
    color: var(--blue-400);
    font-size: 0.82rem;
    font-weight: 700;
}

/* ==================================================================
   ADMIN LAYOUT
   ================================================================== */
.a4-wrapper {
    max-width: 980px;
    margin: 32px auto;
    background: var(--paper);
    border-radius: var(--r-2xl);
    padding: 40px 44px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(226,232,240,0.7);
}
.a4-wide { max-width: var(--page-max); }

@media (max-width: 768px) {
    .a4-wrapper { margin: 18px 12px; padding: 26px 20px; border-radius: var(--r-xl); }
}

/* ==================================================================
   ADMIN — STATS / CARDS
   ================================================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin: 24px 0 36px;
}
.stat-card {
    background: var(--paper);
    padding: 24px 26px;
    border-radius: var(--r-lg);
    border: 1px solid var(--ink-200);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    transition: var(--t);
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.stat-card::before {
    content: '';
    position: absolute;
    inset: 0 auto 0 0;
    width: 5px;
    background: var(--blue-600);
}
.stat-card.green::before  { background: var(--success); }
.stat-card.orange::before { background: var(--warning); }
.stat-card.purple::before { background: var(--purple); }
.stat-icon  { font-size: 1.7rem; margin-bottom: 10px; }
.stat-value { font-size: 2rem; font-weight: 800; color: var(--ink-900); line-height: 1.05; letter-spacing: -0.02em; }
.stat-label {
    font-size: 0.74rem;
    font-weight: 700;
    color: var(--ink-500);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-top: 6px;
}

/* ==================================================================
   ADMIN — FORM CONTROLS
   ================================================================== */
.admin-input,
.admin-select,
input[type="text"],
input[type="number"],
input[type="password"],
input[type="color"],
select,
textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--ink-200);
    border-radius: var(--r-md);
    font-size: 0.95rem;
    font-weight: 500;
    background: var(--paper);
    color: var(--ink-900);
    transition: var(--t-fast);
}
.admin-input:focus,
.admin-select:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--blue-500);
    box-shadow: 0 0 0 4px rgba(59,130,246,0.14);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    margin-bottom: 18px;
}
.form-grid .full { grid-column: 1 / -1; }
.form-grid label {
    display: block;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--ink-700);
    margin-bottom: 6px;
    letter-spacing: 0.2px;
}

.search-bar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
    background: var(--ink-50);
    padding: 12px;
    border-radius: var(--r-lg);
    border: 1px solid var(--ink-200);
}
.search-bar .admin-input { flex: 1; min-width: 200px; }
.search-bar .admin-select { flex: 0 0 auto; width: auto; min-width: 160px; }

@media (max-width: 768px) {
    .form-grid { grid-template-columns: 1fr; }
    .search-bar { flex-direction: column; }
    .search-bar .admin-select { width: 100%; }
}

/* ==================================================================
   BUTTONS
   ================================================================== */
.btn-primary, .btn-edit, .btn-danger, .btn-success, .btn-warning, .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 20px;
    border: none;
    border-radius: var(--r-pill);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.2px;
    cursor: pointer;
    transition: var(--t);
    text-align: center;
    white-space: nowrap;
}
.btn-primary {
    background: var(--blue-600);
    color: #fff;
    box-shadow: 0 6px 16px -6px rgba(37,99,235,0.45);
}
.btn-primary:hover { background: var(--blue-700); transform: translateY(-1px); box-shadow: 0 8px 20px -6px rgba(37,99,235,0.55); }

.btn-edit    { background: var(--blue-50);  color: var(--blue-700); }
.btn-edit:hover { background: var(--blue-600); color: #fff; }

.btn-danger  { background: var(--danger-bg); color: #b91c1c; }
.btn-danger:hover { background: var(--danger); color: #fff; }

.btn-warning { background: var(--warning-bg); color: #92400e; }
.btn-warning:hover { background: var(--warning); color: #fff; }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #059669; }

.btn-ghost   { background: transparent; color: var(--blue-700); border: 1.5px solid var(--blue-600); }
.btn-ghost:hover { background: var(--blue-600); color: #fff; }

.btn-sm { padding: 8px 14px; font-size: 0.78rem; }
.actions-cell { display: flex; gap: 6px; flex-wrap: wrap; }

/* ==================================================================
   TABLES — Academic
   ================================================================== */
.table-wrap { overflow-x: auto; border-radius: var(--r-lg); }
.academic-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--paper);
    border-radius: var(--r-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--ink-200);
    font-size: 0.88rem;
    min-width: 640px;
}
.academic-table thead th {
    background: linear-gradient(180deg, #f5f9ff, #eaf2fe);
    color: var(--navy-800);
    font-weight: 800;
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    padding: 15px 14px;
    text-align: left;
    border-bottom: 2px solid var(--blue-100);
    white-space: nowrap;
}
.academic-table tbody td {
    padding: 14px;
    border-bottom: 1px solid var(--ink-100);
    vertical-align: middle;
}
.academic-table tbody tr:last-child td { border-bottom: none; }
.academic-table tbody tr:hover td { background: var(--blue-50); }

/* ==================================================================
   BADGES
   ================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 11px;
    border-radius: var(--r-pill);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}
.badge-online  { background: #d1fae5; color: #065f46; }
.badge-offline { background: #fee2e2; color: #991b1b; }
.badge-code {
    background: var(--blue-50);
    color: var(--blue-700);
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    letter-spacing: 1px;
    padding: 5px 12px;
    border: 1.5px dashed var(--blue-400);
}
.badge-price { background: #fef3c7; color: #92400e; }

/* ==================================================================
   ALERTS
   ================================================================== */
.alert {
    padding: 14px 18px;
    border-radius: var(--r-md);
    font-size: 0.92rem;
    font-weight: 600;
    margin-bottom: 18px;
    border: 1px solid transparent;
}
.alert-error   { background: var(--danger-bg);  color: #b91c1c; border-color: #fecaca; }
.alert-success { background: var(--success-bg); color: #15803d; border-color: #bbf7d0; }
.alert-info    { background: var(--blue-50);    color: var(--blue-700); border-color: var(--blue-100); }

/* ==================================================================
   LOGIN / AUTH
   ================================================================== */
.login-card {
    max-width: 440px;
    margin: 80px auto;
    background: var(--paper);
    border-radius: var(--r-2xl);
    padding: 48px 40px;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--ink-200);
    text-align: center;
}
.login-card .logo-big { font-size: 3.2rem; margin-bottom: 14px; }
.login-card h1 { font-size: 1.6rem; margin-bottom: 6px; }
.login-card p  { color: var(--ink-500); font-size: 0.92rem; margin-bottom: 26px; }

.code-input {
    width: 100%;
    padding: 18px 22px;
    font-family: 'Courier New', monospace;
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: 6px;
    text-align: center;
    text-transform: uppercase;
    border: 2px solid var(--ink-200);
    border-radius: var(--r-lg);
    background: var(--ink-50);
    transition: var(--t);
}
.code-input:focus {
    outline: none;
    border-color: var(--blue-600);
    background: #fff;
    box-shadow: 0 0 0 5px rgba(37,99,235,0.12);
}

.access-code-box {
    background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
    border: 2px dashed var(--blue-500);
    border-radius: var(--r-lg);
    padding: 22px;
    text-align: center;
    margin: 18px 0;
}
.access-code-box .code {
    font-family: 'Courier New', monospace;
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: 5px;
    color: var(--blue-700);
    word-break: break-all;
}
.access-code-box small { color: var(--blue-700); font-weight: 700; }

@media (max-width: 480px) {
    .login-card { margin: 30px 14px; padding: 32px 24px; }
    .access-code-box .code { font-size: 1.4rem; letter-spacing: 3px; }
}

/* ==================================================================
   STUDENT APP — TOPBAR
   ================================================================== */
.app-body {
    background: var(--canvas);
    margin: 0;
    padding: 0 0 60px;
    font-family: 'Inter', sans-serif;
    color: var(--ink-800);
}

.app-topbar {
    position: sticky;
    top: 0;
    z-index: 400;
    background: linear-gradient(135deg, var(--navy-800) 0%, var(--blue-700) 100%);
    color: #fff;
    box-shadow: 0 8px 28px -12px rgba(10,24,52,0.55);
}
.app-topbar-inner {
    max-width: var(--page-max);
    margin: 0 auto;
    padding: 14px var(--gutter);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.app-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fff;
    font-weight: 800;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
    min-width: 0;
    flex: 1;
}
.app-brand > span:last-child {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.app-brand-arrow, .app-brand-logo {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: rgba(255,255,255,0.16);
    border: 1px solid rgba(255,255,255,0.22);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    transition: var(--t-fast);
}
.app-brand-arrow:hover { background: rgba(255,255,255,0.28); }

.app-user {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 5px 14px 5px 5px;
    border-radius: var(--r-pill);
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.14);
    cursor: pointer;
    transition: var(--t-fast);
    user-select: none;
}
.app-user:hover { background: rgba(255,255,255,0.2); }
.app-user-avatar {
    width: 32px; height: 32px;
    background: #fff;
    color: var(--blue-700);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem;
    font-weight: 700;
}
.app-user-name { font-size: 0.88rem; font-weight: 700; }
.app-user-caret { font-size: 0.7rem; opacity: 0.8; }

.app-user-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    min-width: 170px;
    background: var(--paper);
    color: var(--ink-800);
    border-radius: var(--r-md);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--ink-200);
    overflow: hidden;
    z-index: 500;
}
.app-user-dropdown.open { display: block; animation: dropIn 0.18s var(--ease); }
.app-user-dropdown a {
    display: block;
    padding: 12px 16px;
    color: #b91c1c;
    font-weight: 700;
    font-size: 0.88rem;
    transition: var(--t-fast);
}
.app-user-dropdown a:hover { background: var(--danger-bg); }
@keyframes dropIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }

/* ==================================================================
   COURSE PICKER
   ================================================================== */
.course-picker-wrap {
    max-width: var(--page-max);
    margin: 40px auto;
    padding: 0 var(--gutter);
}
.course-picker-header { text-align: center; margin-bottom: 40px; }
.course-picker-header h1 {
    font-size: 2.1rem;
    font-weight: 800;
    color: var(--ink-900);
    margin: 0 0 8px;
    letter-spacing: -0.02em;
}
.course-picker-header p {
    color: var(--ink-500);
    font-size: 1rem;
    margin: 0;
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
    gap: 24px;
}

.course-card {
    display: flex;
    flex-direction: column;
    background: var(--paper);
    border-radius: var(--r-xl);
    overflow: hidden;
    border: 1px solid var(--ink-200);
    box-shadow: var(--shadow-sm);
    transition: var(--t);
    position: relative;
}
.course-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--course-color, var(--blue-600));
}
.course-card-top {
    position: relative;
    aspect-ratio: 16 / 10;
    background: linear-gradient(135deg, var(--course-color, var(--blue-600)), var(--navy-900));
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
.course-card-top::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 0%, rgba(255,255,255,0.22), transparent 60%);
    pointer-events: none;
}
.course-card-top img { width: 100%; height: 100%; object-fit: cover; }
.course-card-fallback {
    font-size: 4.5rem;
    filter: drop-shadow(0 8px 20px rgba(0,0,0,0.25));
    z-index: 1;
}
.course-card-count {
    position: absolute;
    bottom: 12px; right: 12px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    padding: 5px 13px;
    border-radius: var(--r-pill);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.4px;
    backdrop-filter: blur(6px);
    z-index: 2;
}
.course-card-body {
    padding: 26px 24px 22px;
    position: relative;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.course-card-icon {
    position: absolute;
    top: -28px; left: 24px;
    width: 56px; height: 56px;
    border-radius: var(--r-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem;
    color: #fff;
    border: 3px solid var(--paper);
    box-shadow: var(--shadow-md);
}
.course-card-body h3 {
    margin: 20px 0 4px;
    font-size: 1.18rem;
    font-weight: 800;
    color: var(--ink-900);
    letter-spacing: -0.015em;
}
.course-card-body p {
    color: var(--ink-500);
    font-size: 0.88rem;
    line-height: 1.55;
    margin: 6px 0 0;
}
.course-card-cta {
    margin-top: auto;
    padding-top: 14px;
    font-weight: 800;
    font-size: 0.85rem;
    letter-spacing: 0.2px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* ==================================================================
   LESSONS PAGE (list of lessons for a course)
   ================================================================== */
.lessons-page {
    max-width: var(--page-max);
    margin: 30px auto;
    padding: 0 var(--gutter);
}
.lessons-page-hero {
    background: linear-gradient(135deg, var(--course-color, var(--blue-700)) 0%, var(--navy-900) 100%);
    border-radius: var(--r-2xl);
    padding: 40px 36px;
    color: #fff;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}
.lessons-page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 80% 0%, rgba(255,255,255,0.15), transparent 55%);
    pointer-events: none;
}
.lessons-page-hero-inner {
    display: flex;
    align-items: center;
    gap: 26px;
    position: relative;
    z-index: 1;
}
.lessons-page-hero-icon {
    width: 88px; height: 88px;
    border-radius: var(--r-xl);
    background: rgba(255,255,255,0.16);
    border: 2px solid rgba(255,255,255,0.25);
    display: flex; align-items: center; justify-content: center;
    font-size: 2.6rem;
    flex-shrink: 0;
    backdrop-filter: blur(4px);
}
.lessons-page-hero-text { flex: 1; min-width: 0; }
.lessons-page-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: rgba(255,255,255,0.85);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.3px;
    margin-bottom: 10px;
    transition: var(--t-fast);
}
.lessons-page-back:hover { color: #fff; text-decoration: underline; }
.lessons-page-hero h1 {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    margin: 0 0 6px;
    letter-spacing: -0.02em;
}
.lessons-page-hero-ku {
    color: rgba(255,255,255,0.9);
    font-size: 1.05rem;
    margin-bottom: 10px;
}
.lessons-page-meta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: var(--r-pill);
    background: rgba(255,255,255,0.18);
    border: 1px solid rgba(255,255,255,0.2);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.4px;
    backdrop-filter: blur(4px);
}
.lessons-page-desc {
    color: var(--ink-600);
    font-size: 0.95rem;
    margin: 22px 4px 0;
    line-height: 1.65;
}

.lessons-page-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 22px;
    margin-top: 28px;
}
.lesson-tile {
    background: var(--paper);
    border-radius: var(--r-xl);
    border: 1px solid var(--ink-200);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: var(--t);
}
.lesson-tile:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--blue-400);
}
.lesson-tile-thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
    overflow: hidden;
}
.lesson-tile-thumb img { width: 100%; height: 100%; object-fit: cover; }
.lesson-tile-fallback {
    width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    font-size: 2.6rem;
    background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
}
.lesson-tile-play {
    position: absolute;
    bottom: 12px; right: 12px;
    width: 38px; height: 38px;
    border-radius: 50%;
    background: rgba(15,23,42,0.72);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.82rem;
    padding-left: 3px;
    backdrop-filter: blur(6px);
    transition: var(--t-fast);
}
.lesson-tile:hover .lesson-tile-play { background: var(--blue-600); transform: scale(1.08); }
.lesson-tile-num {
    position: absolute;
    top: 12px; left: 12px;
    background: rgba(255,255,255,0.96);
    color: var(--ink-900);
    padding: 5px 13px;
    border-radius: var(--r-pill);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.4px;
    box-shadow: var(--shadow-xs);
}
.lesson-tile-body {
    padding: 18px 20px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.lesson-tile-body h3 {
    margin: 0 0 4px;
    font-size: 1.02rem;
    font-weight: 800;
    color: var(--ink-900);
    letter-spacing: -0.01em;
}
.lesson-tile-ku { font-size: 0.86rem; color: var(--ink-500); margin-bottom: 4px; }
.lesson-tile-body p {
    color: var(--ink-500);
    font-size: 0.85rem;
    line-height: 1.55;
    margin: 6px 0 0;
    flex: 1;
}
.lesson-tile-cta {
    margin-top: 14px;
    font-weight: 800;
    font-size: 0.82rem;
    letter-spacing: 0.2px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

/* ==================================================================
   SINGLE LESSON PAGE
   ================================================================== */
.single-lesson-wrap {
    max-width: 900px;
    margin: 30px auto;
    padding: 0 var(--gutter) 80px;
}

.mobile-back-to-lessons {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--r-pill);
    background: var(--blue-50);
    color: var(--blue-700);
    font-weight: 800;
    font-size: 0.85rem;
    letter-spacing: 0.2px;
    margin-bottom: 20px;
    transition: var(--t-fast);
    border: 1px solid var(--blue-100);
}
.mobile-back-to-lessons:hover { background: var(--blue-100); transform: translateX(-2px); }

.single-lesson-header {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}
.pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 15px;
    border-radius: var(--r-pill);
    font-weight: 800;
    font-size: 0.76rem;
    letter-spacing: 0.4px;
    text-transform: uppercase;
}
.pill-blue {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
    color: #fff;
    box-shadow: 0 4px 12px -4px rgba(37,99,235,0.4);
}
.pill-light {
    background: var(--ink-100);
    color: var(--ink-700);
    border: 1px solid var(--ink-200);
}

.single-lesson-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--ink-900);
    letter-spacing: -0.025em;
    line-height: 1.2;
    margin: 0 0 8px;
}
.single-lesson-ku {
    color: var(--blue-700);
    font-size: 1.15rem;
    margin-bottom: 8px;
}
.single-lesson-sub {
    color: var(--ink-600);
    font-size: 0.98rem;
    margin: 0 0 24px;
    line-height: 1.6;
}

/* VIDEO — prominent, cinematic */
.video-shell {
    width: 100%;
    margin: 24px 0;
    border-radius: var(--r-xl);
    overflow: hidden;
    background: #000;
    box-shadow: 0 24px 48px -20px rgba(10,24,52,0.4);
    position: relative;
}
.video-shell::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--r-xl);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08);
    pointer-events: none;
    z-index: 2;
}
.video-shell video {
    width: 100%;
    display: block;
    aspect-ratio: 16 / 9;
    background: #000;
}

/* LESSON CONTENT */
.lesson-content {
    background: var(--paper);
    border: 1px solid var(--ink-200);
    border-radius: var(--r-xl);
    padding: 32px 34px;
    margin-top: 26px;
    box-shadow: var(--shadow-sm);
}
.lesson-content-head {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 22px;
    padding-bottom: 18px;
    border-bottom: 2px solid var(--ink-100);
}
.lesson-content-head-icon {
    width: 46px; height: 46px;
    background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
    color: var(--blue-700);
    border-radius: var(--r-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem;
}
.lesson-content-head h2 {
    margin: 0;
    font-size: 1.18rem;
    font-weight: 800;
    color: var(--ink-900);
    letter-spacing: -0.015em;
}
.lesson-content-body {
    font-size: 1.02rem;
    line-height: 1.8;
    color: var(--ink-800);
    padding: 0 !important;
}
.lesson-content-body * { max-width: 100%; }
.lesson-content-body img,
.lesson-content-body video {
    max-width: 100%;
    height: auto;
    border-radius: var(--r-md);
    margin: 14px 0;
    box-shadow: var(--shadow-sm);
}
.lesson-content-body h1,
.lesson-content-body h2,
.lesson-content-body h3 {
    color: var(--ink-900);
    font-weight: 800;
    margin: 26px 0 12px;
    letter-spacing: -0.015em;
}
.lesson-content-body p { margin: 12px 0; }
.lesson-content-body ul,
.lesson-content-body ol { padding-inline-start: 28px; margin: 12px 0; }
.lesson-content-body li { margin-bottom: 6px; }
.lesson-content-body blockquote {
    border-left: 4px solid var(--blue-500);
    background: var(--blue-50);
    padding: 16px 22px;
    margin: 18px 0;
    border-radius: var(--r-md);
    color: var(--navy-800);
    font-weight: 600;
}
.lesson-content-body a {
    color: var(--blue-700);
    text-decoration: underline;
    text-decoration-thickness: 1.5px;
    text-underline-offset: 2px;
    font-weight: 700;
}
.lesson-content-body .ql-align-center  { text-align: center; }
.lesson-content-body .ql-align-right   { text-align: right; }
.lesson-content-body .ql-align-justify { text-align: justify; }
.lesson-content-body .ql-direction-rtl { direction: rtl; }

/* ==================================================================
   QUIZ
   ================================================================== */
.quiz-section-container {
    margin-top: 30px;
    background: var(--ink-50);
    padding: 28px;
    border-radius: var(--r-xl);
    border: 1px solid var(--ink-200);
}
.quiz-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 20px;
}
.quiz-header-row h3 {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--ink-900);
}
.quiz-toggle-btn {
    background: var(--paper);
    border: 1.5px solid var(--blue-600);
    color: var(--blue-700);
    padding: 10px 22px;
    border-radius: var(--r-pill);
    font-weight: 800;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--t);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.quiz-toggle-btn:hover { background: var(--blue-600); color: #fff; }

.quiz-card {
    background: var(--paper);
    padding: 20px 22px;
    border-radius: var(--r-md);
    margin-bottom: 12px;
    border: 1.5px solid var(--ink-200);
    transition: var(--t);
}
.quiz-card.correct-highlight { border-color: var(--success); background: var(--success-bg); }
.quiz-card.wrong-highlight   { border-color: var(--danger);  background: var(--danger-bg); }
.quiz-question-header {
    font-weight: 800;
    font-size: 1rem;
    color: var(--ink-900);
    margin-bottom: 12px;
    letter-spacing: -0.005em;
}
.quiz-option-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border: 1.5px solid var(--ink-200);
    border-radius: var(--r-md);
    margin-bottom: 8px;
    cursor: pointer;
    background: var(--paper);
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--t-fast);
}
.quiz-option-item:hover { border-color: var(--blue-400); background: var(--blue-50); }
.quiz-option-item input[type="radio"] {
    accent-color: var(--blue-600);
    width: 18px; height: 18px;
    margin-right: 14px;
    cursor: pointer;
    flex-shrink: 0;
}
.btn-submit {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
    color: #fff;
    border: none;
    padding: 15px 30px;
    border-radius: var(--r-pill);
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    width: 100%;
    margin-top: 16px;
    transition: var(--t);
    box-shadow: 0 10px 22px -8px rgba(37,99,235,0.5);
    letter-spacing: 0.2px;
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 14px 28px -8px rgba(37,99,235,0.6); }
.score-feedback {
    margin-top: 18px;
    padding: 18px 22px;
    border-radius: var(--r-md);
    background: var(--paper);
    border: 1.5px solid var(--ink-200);
    font-weight: 700;
    display: none;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.score-feedback.show { display: flex; animation: pop 0.25s var(--ease); }
.score-badge {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
    color: #fff;
    padding: 9px 22px;
    border-radius: var(--r-pill);
    font-size: 1.05rem;
    font-weight: 800;
}
.quiz-container-hidden  { display: none; }
.quiz-container-visible { display: block; animation: fadeIn 0.25s var(--ease); }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pop { from { opacity: 0; transform: scale(0.96); } to { opacity: 1; transform: scale(1); } }

/* ==================================================================
   PREV / NEXT NAVIGATION
   ================================================================== */
.lesson-nav-bottom {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-top: 36px;
}
.lesson-nav-btn {
    background: var(--paper);
    border: 1.5px solid var(--ink-200);
    border-radius: var(--r-lg);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    transition: var(--t);
    min-width: 0;
}
.lesson-nav-btn:hover {
    border-color: var(--blue-500);
    transform: translateY(-3px);
    box-shadow: 0 12px 28px -14px rgba(37,99,235,0.35);
}
.lesson-nav-btn.next { justify-content: flex-end; }
.lesson-nav-arrow {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--blue-600);
    flex-shrink: 0;
}
.lesson-nav-info { min-width: 0; }
.lesson-nav-label {
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--ink-500);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    display: block;
    margin-bottom: 2px;
}
.lesson-nav-title {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--ink-900);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    max-width: 240px;
}

/* ==================================================================
   EMPTY STATES
   ================================================================== */
.empty-state {
    text-align: center;
    padding: 70px 30px;
    background: var(--paper);
    border: 2px dashed var(--ink-200);
    border-radius: var(--r-2xl);
    grid-column: 1 / -1;
}
.empty-state-icon { font-size: 3.4rem; margin-bottom: 14px; }
.empty-state h2 { margin: 0 0 8px; font-size: 1.25rem; font-weight: 800; color: var(--ink-900); }
.empty-state p  { color: var(--ink-500); font-size: 0.92rem; margin: 0; }

/* ==================================================================
   ADMIN — COURSE CHECKBOXES
   ================================================================== */
.course-check-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 12px;
}
.course-check-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: var(--paper);
    border: 2px solid var(--ink-200);
    border-radius: var(--r-md);
    cursor: pointer;
    transition: var(--t-fast);
    position: relative;
    user-select: none;
}
.course-check-item:hover { border-color: var(--blue-400); }
.course-check-item.checked {
    border-color: var(--blue-600);
    background: var(--blue-50);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}
.course-check-item input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}
.course-check-icon {
    width: 42px; height: 42px;
    border-radius: var(--r-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.25rem;
    color: #fff;
    flex-shrink: 0;
    box-shadow: var(--shadow-xs);
}
.course-check-info { flex: 1; min-width: 0; }
.course-check-name {
    font-weight: 800;
    font-size: 0.92rem;
    color: var(--ink-900);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.course-check-ku {
    font-size: 0.8rem;
    color: var(--ink-500);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.course-check-tick {
    width: 26px; height: 26px;
    border-radius: 50%;
    background: var(--ink-200);
    color: transparent;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.9rem;
    font-weight: 800;
    transition: var(--t-fast);
    flex-shrink: 0;
}
.course-check-item.checked .course-check-tick { background: var(--blue-600); color: #fff; }

.assigned-courses-list { display: flex; flex-wrap: wrap; gap: 5px; }
.info-banner {
    grid-column: 1 / -1;
    padding: 14px 18px;
    border-radius: var(--r-md);
    background: var(--warning-bg);
    color: #92400e;
    font-size: 0.9rem;
    border: 1px solid #fde68a;
}
.info-banner a { color: #b45309; font-weight: 800; text-decoration: underline; }

/* Admin form wrapper */
.admin-form {
    background: var(--ink-50);
    padding: 26px;
    border-radius: var(--r-lg);
    border: 1px solid var(--ink-200);
}
.quiz-edit-block {
    background: var(--paper);
    padding: 18px;
    border-radius: var(--r-md);
    margin-bottom: 14px;
    border: 1px solid var(--ink-200);
}

/* ==================================================================
   QUILL EDITOR — Fonts & Look
   ================================================================== */
.ql-font-inter     { font-family: 'Inter', sans-serif !important; }
.ql-font-rabar     { font-family: 'Rabar', 'Inter', sans-serif !important; }
.ql-font-serif     { font-family: Georgia, 'Times New Roman', serif !important; }
.ql-font-monospace { font-family: 'Courier New', monospace !important; }

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="inter"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="inter"]::before { content: 'Inter'; font-family: 'Inter', sans-serif; }
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="rabar"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="rabar"]::before { content: 'Rabar (کوردی)'; font-family: 'Rabar', sans-serif; }
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before { content: 'Serif'; font-family: Georgia, serif; }
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before { content: 'Mono'; font-family: monospace; }
.ql-snow .ql-picker.ql-font .ql-picker-label::before { content: 'Font'; }

#editor-container {
    background: var(--paper);
    border-radius: var(--r-md);
    overflow: hidden;
    border: 1px solid var(--ink-200);
}
.ql-toolbar {
    border-radius: var(--r-md) var(--r-md) 0 0 !important;
    background: var(--ink-50);
    border-color: var(--ink-200) !important;
    border-bottom: 1px solid var(--ink-200) !important;
}
.ql-container {
    border-radius: 0 0 var(--r-md) var(--r-md) !important;
    border-color: var(--ink-200) !important;
    font-family: 'Inter', sans-serif !important;
    font-size: 15px !important;
}
.ql-editor { min-height: 340px; padding: 20px 22px; line-height: 1.75; }
.ql-editor h1, .ql-editor h2, .ql-editor h3 { font-family: 'Inter', sans-serif; color: var(--ink-900); }

/* Apply Rabar to any content with Rabar class OR RTL direction */
.lesson-content-body .ql-font-rabar,
.lesson-content-body [dir="rtl"],
.lesson-content-body .ql-direction-rtl,
.ql-editor .ql-font-rabar,
.ql-editor [dir="rtl"] {
    font-family: 'Rabar', 'Inter', sans-serif;
}

/* ==================================================================
   RESPONSIVE — TABLET (≤900px)
   ================================================================== */
@media (max-width: 900px) {
    :root { --gutter: 16px; }

    .course-grid { grid-template-columns: 1fr; gap: 18px; }
    .course-picker-wrap { margin: 22px auto; }
    .course-picker-header h1 { font-size: 1.6rem; }
    .course-picker-header { margin-bottom: 26px; }

    .lessons-page { margin: 18px auto; }
    .lessons-page-hero { padding: 26px 22px; border-radius: var(--r-xl); }
    .lessons-page-hero-inner { flex-direction: column; text-align: center; gap: 16px; }
    .lessons-page-hero-icon { width: 72px; height: 72px; font-size: 2.2rem; }
    .lessons-page-hero h1 { font-size: 1.5rem; }
    .lessons-page-grid { grid-template-columns: 1fr; gap: 16px; }

    .single-lesson-wrap { margin: 20px auto; padding: 0 14px 60px; }
    .single-lesson-title { font-size: 1.5rem; }
    .single-lesson-ku { font-size: 1rem; }
    .single-lesson-sub { font-size: 0.92rem; }
    .video-shell { border-radius: var(--r-lg); margin: 18px 0; }
    .lesson-content { padding: 22px 20px; border-radius: var(--r-lg); }
    .lesson-content-body { font-size: 0.98rem; line-height: 1.75; }

    .lesson-nav-bottom { grid-template-columns: 1fr; gap: 10px; }
    .lesson-nav-btn.next { justify-content: flex-start; }
    .lesson-nav-btn.next .lesson-nav-info { text-align: left !important; order: 2; }
    .lesson-nav-btn.next .lesson-nav-arrow { order: 1; }
    .lesson-nav-title { max-width: 100%; }

    .nav-inner { height: auto; padding: 12px 0; }
    .nav-links { width: 100%; justify-content: center; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ==================================================================
   RESPONSIVE — MOBILE (≤600px)
   ================================================================== */
@media (max-width: 600px) {
    :root { --gutter: 14px; }
    html { font-size: 15px; }

    .app-topbar-inner { padding: 12px 14px; }
    .app-brand { font-size: 0.95rem; gap: 10px; }
    .app-brand-arrow, .app-brand-logo { width: 34px; height: 34px; font-size: 0.9rem; }
    .app-user { padding: 4px 10px 4px 4px; }
    .app-user-avatar { width: 28px; height: 28px; font-size: 0.9rem; }
    .app-user-name { display: none; }

    .course-picker-header h1 { font-size: 1.35rem; }
    .course-picker-header p { font-size: 0.88rem; }

    .course-card-body { padding: 24px 20px 20px; }
    .course-card-body h3 { font-size: 1.05rem; }

    .lessons-page-hero { padding: 22px 18px; }
    .lessons-page-hero-icon { width: 60px; height: 60px; font-size: 1.8rem; }
    .lessons-page-hero h1 { font-size: 1.28rem; }
    .lessons-page-hero-ku { font-size: 0.92rem; }
    .lessons-page-meta { padding: 5px 12px; font-size: 0.72rem; }

    .single-lesson-title { font-size: 1.3rem; }
    .single-lesson-ku { font-size: 0.95rem; }
    .single-lesson-sub { font-size: 0.88rem; }
    .pill { padding: 5px 12px; font-size: 0.7rem; }

    .mobile-back-to-lessons { padding: 9px 16px; font-size: 0.8rem; }

    .video-shell video { border-radius: 12px; }

    .lesson-content { padding: 18px 16px; }
    .lesson-content-head h2 { font-size: 1.05rem; }
    .lesson-content-head-icon { width: 40px; height: 40px; font-size: 1.1rem; }
    .lesson-content-body { font-size: 0.94rem; }

    .quiz-section-container { padding: 18px 16px; border-radius: var(--r-lg); }
    .quiz-card { padding: 16px 16px; }
    .quiz-question-header { font-size: 0.95rem; }
    .quiz-option-item { padding: 10px 12px; font-size: 0.88rem; }
    .btn-submit { padding: 14px 22px; font-size: 0.95rem; }

    .lesson-nav-btn { padding: 14px 16px; }

    .empty-state { padding: 50px 22px; }
    .empty-state-icon { font-size: 2.6rem; }
    .empty-state h2 { font-size: 1.08rem; }
    .empty-state p  { font-size: 0.86rem; }

    .login-card { margin: 24px 14px; padding: 32px 22px; }
    .access-code-box .code { font-size: 1.3rem; letter-spacing: 3px; }
}

/* ==================================================================
   PRINT
   ================================================================== */
@media print {
    .app-topbar, .navbar, .quiz-section-container, .mobile-back-to-lessons,
    .lesson-nav-bottom, .course-card-cta, .video-shell { display: none !important; }
    body { background: #fff; }
    .lesson-content { box-shadow: none; border: none; padding: 0; }
}



/* ==================================================================
   RENEW DROPDOWN (Admin Users Table)
   ================================================================== */
.renew-menu-wrap { position: relative; display: inline-block; }
.renew-menu {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 150px;
    background: #fff;
    border: 1px solid var(--ink-200, #e2e8f0);
    border-radius: var(--r-md, 12px);
    box-shadow: 0 20px 48px -20px rgba(15,23,42,0.18), 0 8px 16px -8px rgba(15,23,42,0.08);
    z-index: 100;
    overflow: hidden;
    animation: fadeIn 0.15s ease;
}
.renew-menu.open { display: block; }
.renew-menu a {
    display: block;
    padding: 10px 16px;
    color: var(--ink-800, #1e293b);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.15s;
    white-space: nowrap;
}
.renew-menu a:hover { background: #eff6ff; color: #1e40af; }
.renew-menu a:not(:last-child) { border-bottom: 1px solid #f1f5f9; }