/* ============================================
   MADHESHIVERSITY — Design System & Styles
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@400;500;600;700;800;900&display=swap');

/* --- CSS Custom Properties --- */
:root {
  --bg-primary: #0a0a12;
  --bg-secondary: #111120;
  --bg-card: rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.08);
  --glass: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.1);
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --accent-dark: #d97706;
  --accent-glow: rgba(245,158,11,0.25);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --success: #22c55e;
  --info: #3b82f6;
  --danger: #ef4444;
  --purple: #a855f7;
  --teal: #14b8a6;
  --pink: #ec4899;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 30px var(--accent-glow);
  --font-body: 'Inter', system-ui, sans-serif;
  --font-heading: 'Outfit', system-ui, sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-light); }

img { max-width: 100%; display: block; }

h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* --- Utility --- */
.section { padding: 100px 0; position: relative; }
.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.8rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 2px; color: var(--accent);
  margin-bottom: 12px;
}
.section-label .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.section-title { font-size: clamp(2rem, 5vw, 3rem); margin-bottom: 16px; }
.section-subtitle { font-size: 1.1rem; color: var(--text-secondary); max-width: 600px; }
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
.text-gradient {
  background: linear-gradient(135deg, var(--accent-light), var(--accent), var(--accent-dark));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 32px; border-radius: var(--radius-md);
  font-family: var(--font-body); font-size: 0.95rem; font-weight: 600;
  border: none; cursor: pointer; transition: var(--transition);
  text-decoration: none; outline: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #000; box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  transform: translateY(-2px); box-shadow: 0 0 40px var(--accent-glow);
  color: #000;
}
.btn-outline {
  background: transparent; border: 1.5px solid var(--glass-border);
  color: var(--text-primary);
}
.btn-outline:hover {
  border-color: var(--accent); color: var(--accent);
  background: rgba(245,158,11,0.05);
}
.btn-sm { padding: 10px 20px; font-size: 0.85rem; }
.btn-icon {
  width: 44px; height: 44px; padding: 0; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
}

/* --- Glass Card --- */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: var(--transition);
}
.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255,255,255,0.15);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

/* --- Badge --- */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 12px; border-radius: 50px;
  font-size: 0.75rem; font-weight: 600;
  background: rgba(245,158,11,0.15); color: var(--accent);
}
.badge-success { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-info { background: rgba(59,130,246,0.15); color: var(--info); }
.badge-purple { background: rgba(168,85,247,0.15); color: var(--purple); }
.badge-pink { background: rgba(236,72,153,0.15); color: var(--pink); }
.badge-teal { background: rgba(20,184,166,0.15); color: var(--teal); }

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  padding: 16px 0;
  background: rgba(10,10,18,0.8);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.navbar.scrolled { border-bottom-color: var(--glass-border); padding: 10px 0; }
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.nav-brand { display: flex; align-items: center; gap: 10px; }
.nav-brand .logo-icon {
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; font-weight: 900; color: #000;
}
.nav-brand .brand-text {
  font-family: var(--font-heading); font-size: 1.3rem; font-weight: 700;
  color: var(--text-primary);
}
.nav-brand .brand-text span { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a {
  font-size: 0.9rem; font-weight: 500; color: var(--text-secondary);
  position: relative; padding: 4px 0;
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0;
  width: 0; height: 2px; background: var(--accent);
  transition: var(--transition);
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-search {
  display: flex; align-items: center; gap: 8px;
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: 50px; padding: 8px 16px;
}
.nav-search input {
  background: none; border: none; outline: none;
  color: var(--text-primary); font-size: 0.85rem;
  width: 160px; font-family: var(--font-body);
}
.nav-search input::placeholder { color: var(--text-muted); }
.nav-search svg { color: var(--text-muted); width: 16px; height: 16px; flex-shrink: 0; }
.mobile-toggle {
  display: none; background: none; border: none;
  color: var(--text-primary); cursor: pointer; padding: 4px;
}
.mobile-toggle svg { width: 28px; height: 28px; }

/* Mobile Nav */
.mobile-nav {
  display: none; position: fixed; top: 0; left: 0;
  width: 100%; height: 100vh; z-index: 999;
  background: rgba(10,10,18,0.98);
  backdrop-filter: blur(20px);
  flex-direction: column; align-items: center; justify-content: center;
  gap: 32px;
}
.mobile-nav.active { display: flex; }
.mobile-nav a {
  font-family: var(--font-heading); font-size: 1.8rem; font-weight: 600;
  color: var(--text-secondary);
}
.mobile-nav a:hover { color: var(--accent); }
.mobile-nav .close-btn {
  position: absolute; top: 20px; right: 24px;
  background: none; border: none; color: var(--text-primary);
  cursor: pointer; font-size: 2rem;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding-top: 80px; position: relative; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 30%, rgba(245,158,11,0.08), transparent),
    radial-gradient(ellipse 60% 40% at 80% 70%, rgba(168,85,247,0.06), transparent),
    radial-gradient(ellipse 50% 50% at 20% 80%, rgba(59,130,246,0.05), transparent);
}
.hero-grid {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black, transparent);
}
.hero .container { position: relative; z-index: 1; }
.hero-content { max-width: 780px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 20px; border-radius: 50px;
  background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.2);
  font-size: 0.85rem; font-weight: 500; color: var(--accent);
  margin-bottom: 28px;
}
.hero-badge .pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--success);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  font-weight: 900; line-height: 1.1; margin-bottom: 24px;
}
.hero p {
  font-size: 1.15rem; color: var(--text-secondary);
  max-width: 560px; margin-bottom: 36px; line-height: 1.8;
}
.hero-buttons { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 56px; }
.hero-stats {
  display: flex; gap: 48px; padding-top: 40px;
  border-top: 1px solid var(--glass-border);
}
.hero-stat h3 {
  font-size: 2rem; font-weight: 800; color: var(--accent);
  font-family: var(--font-heading);
}
.hero-stat p { font-size: 0.85rem; color: var(--text-muted); margin-top: 4px; }
.hero-visual {
  position: absolute; right: -5%; top: 50%; transform: translateY(-50%);
  width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(245,158,11,0.06), transparent 70%);
  z-index: 0;
}
.floating-card {
  position: absolute; padding: 16px 24px;
  background: var(--bg-card); border: 1px solid var(--glass-border);
  border-radius: var(--radius-md); backdrop-filter: blur(12px);
  animation: float 6s ease-in-out infinite;
  z-index: 2;
}
.floating-card:nth-child(1) { right: 8%; top: 20%; animation-delay: 0s; }
.floating-card:nth-child(2) { right: 2%; top: 50%; animation-delay: 2s; }
.floating-card:nth-child(3) { right: 12%; top: 75%; animation-delay: 4s; }
.floating-card .fc-icon { font-size: 1.5rem; margin-bottom: 6px; }
.floating-card .fc-label { font-size: 0.8rem; color: var(--text-muted); }
.floating-card .fc-value { font-size: 1rem; font-weight: 700; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

/* ============================================
   SUBJECTS
   ============================================ */
.subjects { background: var(--bg-secondary); }
.subjects-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px; margin-top: 48px;
}
.subject-card {
  padding: 32px 28px; position: relative; overflow: hidden;
  cursor: pointer;
}
.subject-card .card-glow {
  position: absolute; top: -50%; right: -50%;
  width: 200px; height: 200px; border-radius: 50%;
  opacity: 0; transition: var(--transition-slow);
}
.subject-card:hover .card-glow { opacity: 1; }
.subject-card .subject-icon {
  width: 56px; height: 56px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: 20px;
}
.subject-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.subject-card p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 20px; line-height: 1.6; }
.subject-meta {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 16px; border-top: 1px solid var(--glass-border);
}
.subject-meta span { font-size: 0.8rem; color: var(--text-muted); }
.subject-meta .arrow {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--glass); display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.subject-card:hover .arrow { background: var(--accent); color: #000; }

/* Subject colors */
.subject-card[data-subject="science"] .subject-icon { background: rgba(59,130,246,0.15); color: var(--info); }
.subject-card[data-subject="science"] .card-glow { background: radial-gradient(circle, rgba(59,130,246,0.08), transparent); }
.subject-card[data-subject="history"] .subject-icon { background: rgba(245,158,11,0.15); color: var(--accent); }
.subject-card[data-subject="history"] .card-glow { background: radial-gradient(circle, rgba(245,158,11,0.08), transparent); }
.subject-card[data-subject="religion"] .subject-icon { background: rgba(168,85,247,0.15); color: var(--purple); }
.subject-card[data-subject="religion"] .card-glow { background: radial-gradient(circle, rgba(168,85,247,0.08), transparent); }
.subject-card[data-subject="maths"] .subject-icon { background: rgba(34,197,94,0.15); color: var(--success); }
.subject-card[data-subject="maths"] .card-glow { background: radial-gradient(circle, rgba(34,197,94,0.08), transparent); }
.subject-card[data-subject="philosophy"] .subject-icon { background: rgba(236,72,153,0.15); color: var(--pink); }
.subject-card[data-subject="philosophy"] .card-glow { background: radial-gradient(circle, rgba(236,72,153,0.08), transparent); }
.subject-card[data-subject="technology"] .subject-icon { background: rgba(20,184,166,0.15); color: var(--teal); }
.subject-card[data-subject="technology"] .card-glow { background: radial-gradient(circle, rgba(20,184,166,0.08), transparent); }
.subject-card[data-subject="ai"] .subject-icon {
  background: linear-gradient(135deg, rgba(168,85,247,0.15), rgba(59,130,246,0.15));
  color: var(--purple);
}
.subject-card[data-subject="ai"] .card-glow { background: radial-gradient(circle, rgba(168,85,247,0.08), transparent); }

/* Filter tabs */
.filter-tabs {
  display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px;
}
.filter-tab {
  padding: 8px 20px; border-radius: 50px; border: 1px solid var(--glass-border);
  background: transparent; color: var(--text-secondary);
  font-size: 0.85rem; font-weight: 500; cursor: pointer;
  transition: var(--transition); font-family: var(--font-body);
}
.filter-tab:hover, .filter-tab.active {
  background: var(--accent); color: #000; border-color: var(--accent);
}

/* ============================================
   COURSES
   ============================================ */
.courses-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px; margin-top: 48px;
}
.course-card { overflow: hidden; }
.course-card .course-img {
  height: 180px; position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
}
.course-card .course-img .course-emoji {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 4rem; opacity: 0.3;
}
.course-card .course-img .course-level {
  position: absolute; top: 16px; left: 16px;
}
.course-card .course-img .course-price {
  position: absolute; top: 16px; right: 16px;
  font-weight: 700; font-size: 0.9rem;
  padding: 4px 12px; border-radius: 50px;
  background: rgba(34,197,94,0.2); color: var(--success);
}
.course-body { padding: 24px; }
.course-body h3 { font-size: 1.15rem; margin-bottom: 8px; }
.course-body p { font-size: 0.88rem; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.6; }
.course-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 16px; border-top: 1px solid var(--glass-border);
}
.course-footer .meta-item {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.8rem; color: var(--text-muted);
}
.course-footer .enroll-btn {
  padding: 8px 20px; border-radius: var(--radius-sm);
  background: var(--accent); color: #000;
  font-weight: 600; font-size: 0.85rem; border: none; cursor: pointer;
  transition: var(--transition);
}
.course-footer .enroll-btn:hover { background: var(--accent-light); transform: translateY(-1px); }

/* ============================================
   DISCUSSIONS
   ============================================ */
.discussions { background: var(--bg-secondary); }
.discussions-layout {
  display: grid; grid-template-columns: 1fr 360px; gap: 32px; margin-top: 48px;
}
.discussion-list { display: flex; flex-direction: column; gap: 16px; }
.discussion-item {
  padding: 24px; display: flex; gap: 16px; align-items: flex-start;
}
.discussion-item .avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1rem; flex-shrink: 0;
}
.discussion-item .disc-content { flex: 1; }
.discussion-item .disc-content h4 {
  font-size: 1rem; margin-bottom: 6px; cursor: pointer;
  transition: var(--transition);
}
.discussion-item .disc-content h4:hover { color: var(--accent); }
.discussion-item .disc-content p {
  font-size: 0.85rem; color: var(--text-secondary);
  margin-bottom: 12px; line-height: 1.5;
}
.disc-meta {
  display: flex; align-items: center; gap: 16px;
  font-size: 0.78rem; color: var(--text-muted);
}
.disc-meta span { display: flex; align-items: center; gap: 4px; }
.disc-sidebar .glass-card { padding: 28px; }
.disc-sidebar h3 { font-size: 1.1rem; margin-bottom: 20px; }
.topic-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.topic-tag {
  padding: 6px 14px; border-radius: 50px;
  background: var(--glass); border: 1px solid var(--glass-border);
  font-size: 0.8rem; color: var(--text-secondary); cursor: pointer;
  transition: var(--transition);
}
.topic-tag:hover { border-color: var(--accent); color: var(--accent); }
.start-discussion-box textarea {
  width: 100%; min-height: 100px; padding: 16px;
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius-md); color: var(--text-primary);
  font-family: var(--font-body); font-size: 0.9rem;
  resize: vertical; outline: none; transition: var(--transition);
}
.start-discussion-box textarea:focus { border-color: var(--accent); }
.start-discussion-box .btn { margin-top: 12px; width: 100%; }

/* ============================================
   COMMUNITY / EXPRESSION
   ============================================ */
.community-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px; margin-top: 48px;
}
.story-card { padding: 28px; position: relative; }
.story-card .quote-icon {
  font-size: 2.5rem; color: var(--accent); opacity: 0.3;
  line-height: 1; margin-bottom: 12px;
}
.story-card blockquote {
  font-size: 0.95rem; font-style: italic; color: var(--text-secondary);
  line-height: 1.7; margin-bottom: 20px;
}
.story-card .author {
  display: flex; align-items: center; gap: 12px;
}
.story-card .author .avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--teal), var(--info));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.85rem;
}
.story-card .author .author-info .name { font-size: 0.9rem; font-weight: 600; }
.story-card .author .author-info .role { font-size: 0.78rem; color: var(--text-muted); }

/* Expression Form */
.expression-form-section {
  margin-top: 64px; padding: 48px;
  background: var(--bg-card); border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
}
.expression-form-section h3 { font-size: 1.5rem; margin-bottom: 8px; }
.expression-form-section > p { color: var(--text-secondary); margin-bottom: 32px; }
.expression-form { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full-width { grid-column: 1 / -1; }
.form-group label { font-size: 0.85rem; font-weight: 500; color: var(--text-secondary); }
.form-group input, .form-group textarea, .form-group select {
  padding: 12px 16px; background: var(--glass);
  border: 1px solid var(--glass-border); border-radius: var(--radius-sm);
  color: var(--text-primary); font-family: var(--font-body); font-size: 0.9rem;
  outline: none; transition: var(--transition);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--accent);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-group select { cursor: pointer; }
.form-group select option { background: var(--bg-secondary); }

/* ============================================
   ABOUT / MISSION
   ============================================ */
.about { background: var(--bg-secondary); }
.about-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px;
  align-items: center; margin-top: 48px;
}
.about-content p { color: var(--text-secondary); margin-bottom: 20px; line-height: 1.8; }
.about-features { display: flex; flex-direction: column; gap: 20px; margin-top: 32px; }
.about-feature {
  display: flex; gap: 16px; align-items: flex-start;
}
.about-feature .feature-icon {
  width: 48px; height: 48px; border-radius: var(--radius-sm);
  background: rgba(245,158,11,0.1); display: flex; align-items: center;
  justify-content: center; font-size: 1.2rem; flex-shrink: 0;
}
.about-feature h4 { font-size: 1rem; margin-bottom: 4px; }
.about-feature p { font-size: 0.85rem; color: var(--text-muted); }
.about-stats {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px;
}
.stat-card {
  padding: 32px; text-align: center;
}
.stat-card h3 {
  font-size: 2.2rem; font-weight: 800; margin-bottom: 4px;
}
.stat-card p { font-size: 0.88rem; color: var(--text-muted); }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 80px 0 32px; border-top: 1px solid var(--glass-border);
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px; margin-bottom: 60px;
}
.footer-brand .brand-text {
  font-family: var(--font-heading); font-size: 1.4rem; font-weight: 700;
  margin-bottom: 16px;
}
.footer-brand .brand-text span { color: var(--accent); }
.footer-brand p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; max-width: 300px; }
.footer-brand .social-links { display: flex; gap: 12px; margin-top: 24px; }
.footer-brand .social-links a {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--glass); border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary); transition: var(--transition); font-size: 1.1rem;
}
.footer-brand .social-links a:hover {
  background: var(--accent); color: #000; border-color: var(--accent);
}
.footer-col h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 20px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-col ul a { font-size: 0.88rem; color: var(--text-secondary); }
.footer-col ul a:hover { color: var(--accent); }
.newsletter { margin-top: 20px; }
.newsletter-form {
  display: flex; gap: 8px;
}
.newsletter-form input {
  flex: 1; padding: 10px 16px;
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm); color: var(--text-primary);
  font-size: 0.85rem; outline: none; font-family: var(--font-body);
}
.newsletter-form input:focus { border-color: var(--accent); }
.newsletter-form button {
  padding: 10px 20px; background: var(--accent); color: #000;
  border: none; border-radius: var(--radius-sm);
  font-weight: 600; cursor: pointer; transition: var(--transition);
  font-family: var(--font-body);
}
.newsletter-form button:hover { background: var(--accent-light); }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 32px; border-top: 1px solid var(--glass-border);
  font-size: 0.82rem; color: var(--text-muted);
}
.footer-bottom-links { display: flex; gap: 24px; }
.footer-bottom-links a { color: var(--text-muted); }
.footer-bottom-links a:hover { color: var(--accent); }

/* ============================================
   MODAL
   ============================================ */
.modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(0,0,0,0.7); backdrop-filter: blur(8px);
  display: none; align-items: center; justify-content: center;
  padding: 24px;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--bg-secondary); border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl); width: 100%; max-width: 520px;
  padding: 40px; position: relative;
  animation: modalIn 0.3s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal .close-modal {
  position: absolute; top: 16px; right: 16px;
  background: var(--glass); border: 1px solid var(--glass-border);
  color: var(--text-primary); width: 36px; height: 36px;
  border-radius: 50%; cursor: pointer; font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.modal .close-modal:hover { background: var(--danger); border-color: var(--danger); }
.modal h2 { font-size: 1.5rem; margin-bottom: 8px; }
.modal > p { color: var(--text-secondary); margin-bottom: 24px; }
.modal .form-group { margin-bottom: 16px; }

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.reveal {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   TOAST
   ============================================ */
.toast-container {
  position: fixed; bottom: 24px; right: 24px; z-index: 3000;
  display: flex; flex-direction: column; gap: 12px;
}
.toast {
  padding: 16px 24px; border-radius: var(--radius-md);
  background: var(--bg-secondary); border: 1px solid var(--glass-border);
  color: var(--text-primary); font-size: 0.9rem;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 3s forwards;
  display: flex; align-items: center; gap: 10px;
}
.toast.success { border-color: var(--success); }
.toast.success::before { content: '✓'; color: var(--success); font-weight: 700; }
@keyframes toastIn { from { opacity: 0; transform: translateX(100px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toastOut { from { opacity: 1; } to { opacity: 0; transform: translateY(20px); } }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .hero-visual, .floating-card { display: none; }
  .discussions-layout { grid-template-columns: 1fr; }
  .about-layout { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-links, .nav-search { display: none; }
  .mobile-toggle { display: block; }
  .hero h1 { font-size: 2.2rem; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .subjects-grid { grid-template-columns: 1fr; }
  .courses-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .expression-form { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
  .section { padding: 64px 0; }
  .expression-form-section { padding: 28px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { width: 100%; }
  .filter-tabs { gap: 6px; }
}