:root {
  --bg-primary: #0f1535;
  --bg-overlay1: rgba(15,21,53,0.82);
  --bg-overlay2: rgba(26,26,110,0.75);
  --glass-bg: rgba(255,255,255,0.07);
  --glass-border: rgba(255,255,255,0.12);
  --glass-shadow: 0 8px 32px rgba(0,0,0,0.25);
  --glass-inset: inset 0 1px 0 rgba(255,255,255,0.1);
  --text-primary: #ffffff;
  --text-secondary: rgba(199,210,254,0.85);
  --text-muted: rgba(199,210,254,0.55);
  --nav-bg: rgba(15,21,53,0.75);
  --nav-border: rgba(255,255,255,0.08);
  --footer-bg: rgba(0,0,0,0.35);
  --input-bg: rgba(255,255,255,0.07);
  --input-border: rgba(255,255,255,0.15);
  --input-color: #ffffff;
  --input-placeholder: rgba(255,255,255,0.3);
  --table-header: rgba(26,26,110,0.7);
  --table-row-hover: rgba(255,255,255,0.04);
  --table-border: rgba(255,255,255,0.05);
  --section-heading: #ffffff;
  --section-border: rgba(99,130,246,0.8);
  --badge-blue-bg: rgba(29,78,216,0.25);
  --badge-blue-text: #93c5fd;
  --badge-green-bg: rgba(22,163,74,0.2);
  --badge-green-text: #86efac;
  --badge-red-bg: rgba(220,38,38,0.2);
  --badge-red-text: #fca5a5;
  --badge-grey-bg: rgba(255,255,255,0.08);
  --badge-grey-text: rgba(199,210,254,0.7);
  --lesson-item-color: rgba(199,210,254,0.8);
  --lesson-active-bg: rgba(45,82,196,0.25);
  --lesson-active-color: #93c5fd;
  --lesson-active-border: #3b82f6;
  --lesson-header-bg: rgba(26,26,110,0.7);
  --alert-error-bg: rgba(220,38,38,0.15);
  --alert-error-color: #fca5a5;
  --alert-error-border: rgba(220,38,38,0.3);
  --alert-success-bg: rgba(22,163,74,0.15);
  --alert-success-color: #86efac;
  --alert-success-border: rgba(22,163,74,0.3);
  --alert-info-bg: rgba(29,78,216,0.15);
  --alert-info-color: #93c5fd;
  --alert-info-border: rgba(29,78,216,0.3);
  --stat-number-color: #93c5fd;
  --stat-label-color: rgba(199,210,254,0.7);
}

body.light-theme {
  --bg-overlay1: rgba(240,244,255,0.88);
  --bg-overlay2: rgba(220,230,255,0.82);
  --glass-bg: rgba(255,255,255,0.55);
  --glass-border: rgba(45,82,196,0.15);
  --glass-shadow: 0 8px 32px rgba(45,82,196,0.12);
  --glass-inset: inset 0 1px 0 rgba(255,255,255,0.8);
  --text-primary: #1a1a2e;
  --text-secondary: #374151;
  --text-muted: #6b7280;
  --nav-bg: rgba(255,255,255,0.75);
  --nav-border: rgba(45,82,196,0.15);
  --footer-bg: rgba(240,244,255,0.85);
  --input-bg: rgba(255,255,255,0.8);
  --input-border: #d1d5db;
  --input-color: #1a1a2e;
  --input-placeholder: #9ca3af;
  --table-header: rgba(45,82,196,0.1);
  --table-row-hover: rgba(45,82,196,0.03);
  --table-border: rgba(45,82,196,0.08);
  --section-heading: #1a1a2e;
  --section-border: #2d52c4;
  --badge-blue-bg: #dbeafe;
  --badge-blue-text: #1d4ed8;
  --badge-green-bg: #dcfce7;
  --badge-green-text: #16a34a;
  --badge-red-bg: #fee2e2;
  --badge-red-text: #dc2626;
  --badge-grey-bg: #f3f4f6;
  --badge-grey-text: #6b7280;
  --lesson-item-color: #374151;
  --lesson-active-bg: #eff6ff;
  --lesson-active-color: #2d52c4;
  --lesson-active-border: #2d52c4;
  --lesson-header-bg: #1a1a6e;
  --alert-error-bg: #fee2e2;
  --alert-error-color: #dc2626;
  --alert-error-border: #fecaca;
  --alert-success-bg: #dcfce7;
  --alert-success-color: #16a34a;
  --alert-success-border: #bbf7d0;
  --alert-info-bg: #dbeafe;
  --alert-info-color: #1d4ed8;
  --alert-info-border: #bfdbfe;
  --stat-number-color: #2d52c4;
  --stat-label-color: #6b7280;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  --logo-filter: invert(1); font-family: 'Inter', sans-serif; color: var(--text-primary); line-height: 1.6; min-height: 100vh; transition: color 0.3s; }

/* BACKGROUND SYSTEM */
#bg-container { position: fixed; inset: 0; z-index: -3; background: #0f1535; }
#bg-image { position: absolute; inset: 0; background-size: cover; background-position: center; background-repeat: no-repeat; transition: opacity 1.5s ease; opacity: 0; }
#bg-image.visible { opacity: 1; }
#bg-image-next { position: absolute; inset: 0; background-size: cover; background-position: center; background-repeat: no-repeat; opacity: 0; transition: opacity 1.5s ease; }
#bg-overlay { position: absolute; inset: 0; background: var(--bg-overlay1); transition: background 0.5s; }
body.light-theme #bg-overlay { background: rgba(240,244,255,0.88); }
#bg-noise { position: absolute; inset: 0; background: radial-gradient(ellipse at 20% 50%, rgba(59,130,246,0.08) 0%, transparent 60%), radial-gradient(ellipse at 80% 20%, rgba(99,102,241,0.06) 0%, transparent 50%); }

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* NAVBAR */
.navbar { background: var(--nav-bg); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); border-bottom: 1px solid var(--nav-border); position: sticky; top: 0; z-index: 100; box-shadow: 0 4px 24px rgba(0,0,0,0.15); transition: background 0.3s; }
.nav-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; height: 68px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 1.1rem; font-weight: 700; color: var(--text-primary); }
.nav-logo-icon { font-size: 1.4rem; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link { color: var(--text-secondary); font-size: 0.92rem; font-weight: 500; padding: 6px 14px; border-radius: 8px; transition: all 0.2s; }
.nav-link:hover { color: var(--text-primary); background: var(--glass-bg); }
.nav-btn { background: var(--glass-bg); backdrop-filter: blur(10px); color: var(--text-primary); font-size: 0.92rem; font-weight: 700; padding: 8px 18px; border-radius: 8px; border: 1px solid var(--glass-border); transition: all 0.2s; }
.nav-btn:hover { background: rgba(255,255,255,0.2); transform: translateY(-1px); }
.nav-btn-outline { background: transparent; color: var(--text-secondary); border: 1px solid var(--glass-border); font-size: 0.92rem; font-weight: 600; padding: 7px 16px; border-radius: 8px; transition: all 0.2s; }
.nav-btn-outline:hover { border-color: var(--glass-border); background: var(--glass-bg); color: var(--text-primary); }


/* NAV OVERRIDES */
.nav-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; color: #fff; }
body.light-theme .nav-logo { color: #1a1a2e; }
.nav-logo-text { display: flex; align-items: baseline; gap: 4px; }
.nav-logo-lassany { font-family: 'Outfit', sans-serif; font-size: 1.4rem; font-weight: 700; letter-spacing: -0.03em; color: #fff; line-height: 1; }
.nav-logo-learn { font-family: 'Outfit', sans-serif; font-size: 0.65rem; font-weight: 700; letter-spacing: 0.14em; color: rgba(199,210,254,0.8); line-height: 1; position: relative; top: -4px; }
body.light-theme .nav-logo-lassany { color: #1a1a2e; }
body.light-theme .nav-logo-learn { color: #6b7280; }

.nav-links { display: flex; align-items: center; gap: 2px; flex: 1; justify-content: center; }
.nav-link { color: rgba(255,255,255,0.65); font-size: 0.88rem; font-weight: 500; padding: 6px 12px; border-radius: 8px; transition: all 0.15s; letter-spacing: -0.01em; }
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.08); }
body.light-theme .nav-link { color: rgba(26,26,46,0.6); }
body.light-theme .nav-link:hover { color: #1a1a2e; background: rgba(0,0,0,0.05); }

.nav-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

.nav-icon-btn { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.1); color: rgba(255,255,255,0.8); width: 36px; height: 36px; border-radius: 8px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all 0.15s; padding: 0; }
.nav-icon-btn:hover { background: rgba(255,255,255,0.14); color: #fff; border-color: rgba(255,255,255,0.2); }
body.light-theme .nav-icon-btn { background: rgba(0,0,0,0.05); border-color: rgba(0,0,0,0.1); color: rgba(26,26,46,0.7); }
body.light-theme .nav-icon-btn:hover { background: rgba(0,0,0,0.08); color: #1a1a2e; }

.nav-pill-outline { font-size: 0.85rem; font-weight: 600; color: rgba(255,255,255,0.8); border: 1px solid rgba(255,255,255,0.2); padding: 7px 16px; border-radius: 8px; transition: all 0.15s; letter-spacing: -0.01em; }
.nav-pill-outline:hover { color: #fff; border-color: rgba(255,255,255,0.45); background: rgba(255,255,255,0.06); }
body.light-theme .nav-pill-outline { color: rgba(26,26,46,0.7); border-color: rgba(0,0,0,0.15); }
body.light-theme .nav-pill-outline:hover { color: #1a1a2e; border-color: rgba(0,0,0,0.3); background: rgba(0,0,0,0.04); }

.nav-pill-solid { font-size: 0.85rem; font-weight: 600; color: #fff; background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.25); padding: 7px 16px; border-radius: 8px; transition: all 0.15s; letter-spacing: -0.01em; }
.nav-pill-solid:hover { background: rgba(255,255,255,0.22); border-color: rgba(255,255,255,0.4); }
body.light-theme .nav-pill-solid { background: #1a1a6e; color: #fff; border-color: #1a1a6e; }
body.light-theme .nav-pill-solid:hover { background: #2d52c4; }

/* THEME TOGGLE */
.theme-toggle { background: var(--glass-bg); border: 1px solid var(--glass-border); color: var(--text-primary); width: 36px; height: 36px; border-radius: 8px; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 1rem; transition: all 0.2s; flex-shrink: 0; }
.theme-toggle:hover { background: rgba(255,255,255,0.15); transform: translateY(-1px); }

/* BG PICKER */
.bg-picker-wrap { position: relative; }
.bg-picker-btn { background: var(--glass-bg); border: 1px solid var(--glass-border); color: var(--text-primary); width: 36px; height: 36px; border-radius: 8px; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 0.9rem; transition: all 0.2s; }
.bg-picker-btn:hover { background: rgba(255,255,255,0.15); transform: translateY(-1px); }
.bg-picker-dropdown { position: absolute; top: calc(100% + 8px); right: 0; background: var(--nav-bg); backdrop-filter: blur(24px); border: 1px solid var(--glass-border); border-radius: 14px; padding: 12px; box-shadow: 0 16px 48px rgba(0,0,0,0.35); display: none; z-index: 200; width: 280px; }
.bg-picker-dropdown.open { display: block; }
.bg-picker-title { font-size: 0.78rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 10px; }
.bg-picker-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.bg-thumb { width: 100%; aspect-ratio: 16/9; border-radius: 6px; background-size: cover; background-position: center; cursor: pointer; border: 2px solid transparent; transition: all 0.2s; }
.bg-thumb:hover { transform: scale(1.05); border-color: rgba(255,255,255,0.5); }
.bg-thumb.active { border-color: #3b82f6; box-shadow: 0 0 0 2px rgba(59,130,246,0.4); }
.bg-picker-loading { font-size: 0.82rem; color: var(--text-muted); text-align: center; padding: 12px; }

/* HERO */
.hero { background: transparent; color: #fff; text-align: center; padding: 90px 24px; position: relative; }
.hero h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 16px; line-height: 1.2; text-shadow: 0 2px 20px rgba(0,0,0,0.3); color: var(--text-primary); }
.hero p { font-size: 1.1rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto 32px; }
.hero-btn { display: inline-block; background: var(--glass-bg); backdrop-filter: blur(10px); color: var(--text-primary); font-weight: 700; font-size: 1rem; padding: 14px 36px; border-radius: 12px; border: 1px solid var(--glass-border); transition: all 0.2s; box-shadow: var(--glass-shadow); }
.hero-btn:hover { background: rgba(255,255,255,0.2); transform: translateY(-2px); }

/* SECTIONS */
.section { padding: 60px 24px; }
.section-header { margin-bottom: 32px; }
.section-header h2 { font-size: 1.6rem; font-weight: 800; color: var(--section-heading); border-left: 4px solid var(--section-border); padding-left: 14px; }
.section-header p { color: var(--text-muted); margin-top: 6px; padding-left: 18px; }
.container { max-width: 1200px; margin: 0 auto; }

/* GLASS BASE */
.glass { background: var(--glass-bg); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border: 1px solid var(--glass-border); border-radius: 16px; box-shadow: var(--glass-shadow), var(--glass-inset); }

/* COURSE CARDS */
.course-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.course-card { background: var(--glass-bg); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border: 1px solid var(--glass-border); border-radius: 16px; overflow: hidden; box-shadow: var(--glass-shadow), var(--glass-inset); transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s; display: flex; flex-direction: column; }
.course-card:hover { transform: translateY(-6px); box-shadow: 0 20px 48px rgba(0,0,0,0.3), var(--glass-inset); border-color: rgba(255,255,255,0.2); }
.course-card-img { width: 100%; height: 180px; object-fit: cover; }
.course-card-img-placeholder { width: 100%; height: 180px; background: linear-gradient(135deg, rgba(45,82,196,0.5), rgba(59,130,246,0.5)); display: flex; align-items: center; justify-content: center; font-size: 3rem; }
.course-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; text-align: center; }
.course-card-category { font-size: 0.72rem; font-weight: 700; color: #93c5fd; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px; }
body.light-theme .course-card-category { color: #2d52c4; }
.course-card-title { text-align: center; font-size: 1.05rem; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; line-height: 1.4; }
.course-card-desc { font-size: 0.9rem; color: var(--text-muted); flex: 1; margin-bottom: 16px; }
.course-card-footer { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; border-top: 1px solid var(--glass-border); }
.course-card-price { font-size: 1rem; font-weight: 700; color: var(--text-primary); }
.course-card-price .from { font-size: 0.75rem; font-weight: 400; color: var(--text-muted); }
.course-card-link { font-size: 0.88rem; font-weight: 600; color: #93c5fd; display: flex; align-items: center; gap: 4px; transition: gap 0.2s; }
body.light-theme .course-card-link { color: #2d52c4; }
.course-card-link:hover { gap: 8px; }

/* BUTTONS */
.btn { display: inline-block; padding: 12px 28px; border-radius: 10px; font-weight: 700; font-size: 0.95rem; cursor: pointer; border: none; transition: all 0.2s; }
.btn-primary { background: linear-gradient(135deg, #2d52c4, #3b82f6); color: #fff; box-shadow: 0 4px 16px rgba(45,82,196,0.35); border: 1px solid rgba(255,255,255,0.15); }
.btn-primary:hover { background: linear-gradient(135deg, #1a3a9e, #2d52c4); transform: translateY(-1px); box-shadow: 0 6px 24px rgba(45,82,196,0.5); }
.btn-secondary { background: var(--glass-bg); backdrop-filter: blur(10px); color: var(--text-primary); border: 1px solid var(--glass-border); }
.btn-secondary:hover { background: rgba(255,255,255,0.15); }
.btn-success { background: linear-gradient(135deg, #16a34a, #22c55e); color: #fff; box-shadow: 0 4px 16px rgba(22,163,74,0.3); border: 1px solid rgba(255,255,255,0.15); }
.btn-success:hover { background: linear-gradient(135deg, #15803d, #16a34a); transform: translateY(-1px); }
.btn-danger { background: linear-gradient(135deg, #dc2626, #ef4444); color: #fff; box-shadow: 0 4px 16px rgba(220,38,38,0.3); border: 1px solid rgba(255,255,255,0.15); }
.btn-danger:hover { background: linear-gradient(135deg, #b91c1c, #dc2626); transform: translateY(-1px); }
.btn-full { width: 100%; text-align: center; }

/* FORMS */
.form-card { background: var(--glass-bg); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid var(--glass-border); border-radius: 20px; padding: 40px; box-shadow: var(--glass-shadow), var(--glass-inset); max-width: 480px; margin: 60px auto; }
.form-card h1 { font-size: 1.6rem; font-weight: 800; margin-bottom: 6px; color: var(--text-primary); }
.form-card .subtitle { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 28px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.88rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 11px 14px; border: 1px solid var(--input-border); border-radius: 8px; font-size: 0.95rem; font-family: 'Inter', sans-serif; color: var(--input-color); background: var(--input-bg); transition: border-color 0.2s, box-shadow 0.2s; }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--input-placeholder); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: #3b82f6; box-shadow: 0 0 0 3px rgba(59,130,246,0.15); background: rgba(255,255,255,0.12); }
.form-group select option { background: #1a1a6e; color: #fff; }
body.light-theme .form-group select option { background: #fff; color: #1a1a2e; }
.form-group textarea { min-height: 100px; resize: vertical; }
.form-divider { text-align: center; color: var(--text-muted); font-size: 0.88rem; margin: 16px 0; }
.form-footer { text-align: center; margin-top: 20px; font-size: 0.9rem; color: var(--text-muted); }
.form-footer a { color: #93c5fd; font-weight: 600; }
body.light-theme .form-footer a { color: #2d52c4; }

/* ALERTS */
.alert { padding: 12px 16px; border-radius: 10px; font-size: 0.92rem; margin-bottom: 20px; font-weight: 500; backdrop-filter: blur(10px); }
.alert-error { background: var(--alert-error-bg); color: var(--alert-error-color); border: 1px solid var(--alert-error-border); }
.alert-success { background: var(--alert-success-bg); color: var(--alert-success-color); border: 1px solid var(--alert-success-border); }
.alert-info { background: var(--alert-info-bg); color: var(--alert-info-color); border: 1px solid var(--alert-info-border); }

/* DASHBOARD */
.dashboard-hero { background: var(--glass-bg); backdrop-filter: blur(16px); border-bottom: 1px solid var(--glass-border); color: var(--text-primary); padding: 40px 24px; }
.dashboard-hero h1 { font-size: 1.8rem; font-weight: 800; color: var(--text-primary); }
.dashboard-hero p { color: var(--text-secondary); margin-top: 4px; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-bottom: 40px; }
.stat-card { background: var(--glass-bg); backdrop-filter: blur(16px); border: 1px solid var(--glass-border); border-radius: 14px; padding: 24px; box-shadow: var(--glass-shadow), var(--glass-inset); text-align: center; }
.stat-card .stat-number { font-size: 2rem; font-weight: 800; color: var(--stat-number-color); }
.stat-card .stat-label { font-size: 0.85rem; color: var(--stat-label-color); margin-top: 4px; }

/* PROGRESS */
.progress-bar-wrap { background: var(--glass-bg); border-radius: 99px; height: 8px; margin-top: 8px; overflow: hidden; border: 1px solid var(--glass-border); }
.progress-bar-fill { height: 100%; background: linear-gradient(90deg, #2d52c4, #3b82f6, #60a5fa); border-radius: 99px; transition: width 0.4s ease; box-shadow: 0 0 10px rgba(59,130,246,0.5); }

/* LESSON LAYOUT */
.lesson-layout { display: grid; grid-template-columns: 1fr 320px; gap: 24px; max-width: 1200px; margin: 0 auto; padding: 32px 24px; }
.video-wrap { position: relative; padding-bottom: 56.25%; height: 0; border-radius: 14px; overflow: hidden; background: #000; margin-bottom: 24px; box-shadow: 0 8px 32px rgba(0,0,0,0.4); }
.video-wrap iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }
.lesson-content { background: var(--glass-bg); backdrop-filter: blur(16px); border: 1px solid var(--glass-border); border-radius: 14px; padding: 28px; box-shadow: var(--glass-shadow); color: var(--text-secondary); }
.lesson-content h2 { font-size: 1.4rem; font-weight: 800; margin-bottom: 16px; color: var(--text-primary); }
.lesson-content p { color: var(--text-secondary); margin-bottom: 12px; line-height: 1.8; }
.lesson-list { background: var(--glass-bg); backdrop-filter: blur(16px); border: 1px solid var(--glass-border); border-radius: 14px; overflow: hidden; box-shadow: var(--glass-shadow); }
.lesson-list-header { background: var(--lesson-header-bg); color: #fff; padding: 16px 20px; font-weight: 700; font-size: 0.95rem; border-bottom: 1px solid var(--glass-border); }
.lesson-list-item { display: flex; align-items: center; gap: 12px; padding: 14px 20px; border-bottom: 1px solid var(--table-border); font-size: 0.9rem; color: var(--lesson-item-color); transition: background 0.15s; }
.lesson-list-item:hover { background: var(--glass-bg); color: var(--text-primary); }
.lesson-list-item.active { background: var(--lesson-active-bg); color: var(--lesson-active-color); font-weight: 600; border-left: 3px solid var(--lesson-active-border); }
.lesson-list-item.completed { color: var(--badge-green-text); }
.lesson-check { font-size: 1rem; flex-shrink: 0; }

/* ADMIN TABLE */
.admin-table { width: 100%; border-collapse: collapse; background: var(--glass-bg); backdrop-filter: blur(16px); border: 1px solid var(--glass-border); border-radius: 14px; overflow: hidden; box-shadow: var(--glass-shadow); }
.admin-table th { background: var(--table-header); color: var(--text-secondary); padding: 14px 18px; text-align: left; font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; border-bottom: 1px solid var(--glass-border); }
.admin-table td { padding: 14px 18px; border-bottom: 1px solid var(--table-border); font-size: 0.92rem; color: var(--text-secondary); }
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--table-row-hover); }

/* BADGES */
.badge { display: inline-block; padding: 3px 10px; border-radius: 99px; font-size: 0.75rem; font-weight: 700; }
.badge-blue { background: var(--badge-blue-bg); color: var(--badge-blue-text); border: 1px solid rgba(59,130,246,0.25); }
.badge-green { background: var(--badge-green-bg); color: var(--badge-green-text); border: 1px solid rgba(22,163,74,0.25); }
.badge-red { background: var(--badge-red-bg); color: var(--badge-red-text); border: 1px solid rgba(220,38,38,0.25); }
.badge-grey { background: var(--badge-grey-bg); color: var(--badge-grey-text); border: 1px solid var(--glass-border); }

/* FOOTER */
.site-footer { background: var(--footer-bg); backdrop-filter: blur(20px); border-top: 1px solid var(--glass-border); color: var(--text-muted); text-align: center; padding: 40px 24px; margin-top: 60px; transition: background 0.3s; }
.footer-container { max-width: 1200px; margin: 0 auto; }
.footer-logo { font-size: 1.2rem; font-weight: 800; color: var(--text-primary); margin-bottom: 8px; }
.footer-tagline { font-size: 0.9rem; margin-bottom: 20px; }
.footer-links { display: flex; justify-content: center; gap: 24px; margin-bottom: 20px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-size: 0.88rem; transition: color 0.2s; }
.footer-links a:hover { color: var(--text-primary); }
.footer-copy { font-size: 0.82rem; color: var(--text-muted); }

@media (max-width: 768px) {
  .hero h1 { font-size: 1.9rem; }
  .nav-links .nav-link { display: none; }
  .lesson-layout { grid-template-columns: 1fr; }
  .course-grid { grid-template-columns: 1fr; }
  .form-card { padding: 28px 20px; margin: 30px 16px; }
  .bg-picker-dropdown { right: -60px; }
}

/* ===== MOBILE NAV ===== */
.mobile-menu { display: none; }
@media (min-width: 769px) { .mobile-menu { display: none !important; } }

@media (max-width: 768px) {
  .nav-container { padding: 0 16px; gap: 0; justify-content: space-between; }
  .nav-links { display: none; }
  .nav-actions { gap: 6px; }
  .nav-actions .nav-pill-outline { display: none; }
  .nav-actions .nav-pill-solid { display: none; }
  .nav-icon-btn { width: 32px; height: 32px; }
  .hamburger-btn { display: flex !important; }

  .mobile-menu {
    display: none;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: rgba(15,21,53,0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 16px;
    flex-direction: column;
    gap: 4px;
    z-index: 99;
  }
  .mobile-menu.open { display: flex; }
  .mobile-menu a {
    color: rgba(255,255,255,0.8);
    font-size: 1rem;
    font-weight: 500;
    padding: 12px 16px;
    border-radius: 10px;
    text-decoration: none;
    border: 1px solid transparent;
    transition: all 0.15s;
  }
  .mobile-menu a:hover { background: rgba(255,255,255,0.08); color: #fff; }
  .mobile-menu .mobile-cta {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.2);
    color: #fff;
    font-weight: 600;
    text-align: center;
    margin-top: 8px;
  }
  body.light-theme .mobile-menu { background: rgba(240,244,255,0.97); border-color: rgba(45,82,196,0.15); }
  body.light-theme .mobile-menu a { color: rgba(26,26,46,0.8); }
  body.light-theme .mobile-menu a:hover { background: rgba(0,0,0,0.05); color: #1a1a2e; }
  body.light-theme .mobile-menu .mobile-cta { background: #1a1a6e; border-color: #1a1a6e; color: #fff; }
}

.hamburger-btn {
  display: none;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  width: 36px; height: 36px;
  border-radius: 8px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: all 0.15s;
}
.hamburger-btn:hover { background: rgba(255,255,255,0.14); color: var(--text-primary); }

/* COURSE PAGE LAYOUT */
.course-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
  padding: 40px 0;
}
@media (max-width: 768px) {
  .course-layout {
    grid-template-columns: 1fr;
    padding: 24px 0;
    gap: 24px;
  }
  .course-layout > div:last-child {
    order: -1;
  }
}

/* COURSE CARD CENTER ALIGN */
.course-card { text-align: center; }
.course-card-body { text-align: center; }
.course-card-footer { justify-content: center; }
.course-card-desc { text-align: center; }

/* BUNDLE GRID - 4 per row */
.bundle-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
@media (max-width: 1100px) {
  .bundle-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .bundle-grid { grid-template-columns: 1fr; }
}