/* ===== CS Study Platform — Main Stylesheet ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --primary: #6c63ff;
  --secondary: #ff6584;
  --accent: #43e97b;
  --gold: #ffd700;
  --bg-dark: #0f0c29;
  --bg-mid: #1a1744;
  --bg-card: rgba(255,255,255,0.05);
  --border: rgba(255,255,255,0.1);
  --text: #fff;
  --text-muted: rgba(255,255,255,0.6);
  --radius: 16px;
  --shadow: 0 8px 32px rgba(108,99,255,0.2);
  --glow: 0 0 30px rgba(108,99,255,0.4);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  overflow-x: hidden;
  min-height: 100vh;
}

/* ===== ANIMATED BACKGROUND ===== */
.bg-animated {
  position: fixed; inset: 0; z-index: -1;
  background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
  overflow: hidden;
}
.bg-animated::before {
  content: '';
  position: absolute; width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(108,99,255,0.15) 0%, transparent 70%);
  top: -200px; right: -200px;
  animation: floatOrb 8s ease-in-out infinite;
}
.bg-animated::after {
  content: '';
  position: absolute; width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(255,101,132,0.1) 0%, transparent 70%);
  bottom: -100px; left: -100px;
  animation: floatOrb 10s ease-in-out infinite reverse;
}
.orb { position: absolute; border-radius: 50%; filter: blur(60px); pointer-events: none; }
.orb-1 { width:300px;height:300px;background:rgba(108,99,255,0.12);top:20%;left:10%;animation:floatOrb 12s ease-in-out infinite; }
.orb-2 { width:200px;height:200px;background:rgba(67,233,123,0.08);top:60%;right:15%;animation:floatOrb 9s ease-in-out infinite 2s; }
.orb-3 { width:250px;height:250px;background:rgba(255,101,132,0.08);top:40%;left:50%;animation:floatOrb 11s ease-in-out infinite 4s; }

@keyframes floatOrb {
  0%,100% { transform: translate(0,0) scale(1); }
  33% { transform: translate(30px,-20px) scale(1.05); }
  66% { transform: translate(-20px,30px) scale(0.95); }
}

/* ===== PARTICLES ===== */
.particles { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.particle {
  position: absolute; width: 3px; height: 3px;
  background: var(--primary); border-radius: 50%;
  animation: particleFloat linear infinite;
  opacity: 0;
}
@keyframes particleFloat {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 0.6; }
  90% { opacity: 0.3; }
  100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed; top: 0; width: 100%; z-index: 1000;
  padding: 16px 24px;
  background: rgba(15,12,41,0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  transition: all 0.3s;
}
.navbar.scrolled { padding: 10px 24px; box-shadow: var(--shadow); }

.nav-brand {
  display: flex; align-items: center; gap: 12px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem; font-weight: 700; text-decoration: none; color: var(--text);
}
.nav-brand .logo-icon {
  width: 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--glow);
  animation: logoPulse 3s ease-in-out infinite;
}
@keyframes logoPulse {
  0%,100% { box-shadow: 0 0 15px rgba(108,99,255,0.4); }
  50% { box-shadow: 0 0 30px rgba(108,99,255,0.8); }
}

.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  padding: 8px 16px; border-radius: 50px; text-decoration: none;
  color: var(--text-muted); font-size: 0.9rem; font-weight: 500;
  transition: all 0.3s;
}
.nav-links a:hover { color: var(--text); background: var(--bg-card); }
.nav-links a.active { color: var(--primary); }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px;
  border-radius: 50px; font-weight: 600; font-size: 0.9rem; cursor: pointer;
  border: none; text-decoration: none; transition: all 0.3s; font-family: 'Inter', sans-serif; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #8b80ff);
  color: #fff; box-shadow: 0 4px 20px rgba(108,99,255,0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(108,99,255,0.6); }
.btn-outline {
  background: transparent; color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: rgba(108,99,255,0.1); }
.btn-secondary {
  background: linear-gradient(135deg, var(--secondary), #ff8fa3);
  color: #fff; box-shadow: 0 4px 20px rgba(255,101,132,0.4);
}
.btn-secondary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255,101,132,0.6); }
.btn-success {
  background: linear-gradient(135deg, var(--accent), #38f9d7);
  color: #111; box-shadow: 0 4px 20px rgba(67,233,123,0.3);
}

/* ===== HAMBURGER ===== */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.hamburger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: all 0.3s; }
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ===== MOBILE NAV ===== */
.mobile-nav {
  position: fixed; top: 70px; left: 0; right: 0; z-index: 999;
  background: rgba(15,12,41,0.97); backdrop-filter: blur(20px);
  padding: 20px; border-bottom: 1px solid var(--border);
  display: none; flex-direction: column; gap: 8px;
  transform: translateY(-20px); opacity: 0; transition: all 0.3s;
}
.mobile-nav.open { display: flex; transform: translateY(0); opacity: 1; }
.mobile-nav a { padding: 12px 16px; color: var(--text-muted); text-decoration: none; border-radius: 10px; }
.mobile-nav a:hover { color: var(--text); background: var(--bg-card); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: 120px 24px 80px;
  position: relative;
}
.hero-content { max-width: 1200px; margin: 0 auto; width: 100%;
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; border-radius: 50px; font-size: 0.8rem; font-weight: 600;
  background: rgba(108,99,255,0.15); border: 1px solid rgba(108,99,255,0.3);
  color: #a5a0ff; margin-bottom: 20px;
  animation: fadeInUp 0.6s ease both;
}
.hero-badge .dot { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; animation: blink 1.5s ease-in-out infinite; }
@keyframes blink { 0%,100%{opacity:1;} 50%{opacity:0.3;} }

.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800; line-height: 1.1;
  animation: fadeInUp 0.6s ease 0.1s both;
}
.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  background-size: 200% 200%; animation: gradientShift 4s ease infinite;
}
@keyframes gradientShift { 0%,100%{background-position:0% 50%;} 50%{background-position:100% 50%;} }

.hero p {
  font-size: 1.1rem; color: var(--text-muted); line-height: 1.7;
  margin: 20px 0 36px;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s both; }

.hero-stats {
  display: flex; gap: 24px; margin-top: 40px; flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.4s both;
}
.stat { text-align: center; }
.stat-num { font-size: 1.8rem; font-weight: 800; font-family: 'Space Grotesk', sans-serif;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }

/* ===== HERO VISUAL ===== */
.hero-visual { position: relative; animation: fadeInRight 0.8s ease 0.3s both; }

.dashboard-preview {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 24px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,0.1);
  position: relative; overflow: hidden;
}
.dashboard-preview::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(108,99,255,0.05), transparent);
  pointer-events: none;
}

.preview-header {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px;
}
.preview-header h3 { font-size: 1rem; font-weight: 600; }
.preview-dots { display: flex; gap: 6px; }
.preview-dots span { width: 10px; height: 10px; border-radius: 50%; }
.preview-dots span:nth-child(1) { background: #ff5f57; }
.preview-dots span:nth-child(2) { background: #ffbd2e; }
.preview-dots span:nth-child(3) { background: #28c840; }

.preview-card {
  background: rgba(255,255,255,0.05);
  border-radius: 12px; padding: 14px; margin-bottom: 12px;
  border: 1px solid rgba(255,255,255,0.08);
}
.preview-card-title { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 8px; }
.progress-bar { height: 6px; border-radius: 3px; background: rgba(255,255,255,0.1); overflow: hidden; }
.progress-fill {
  height: 100%; border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  animation: progressGrow 2s ease 1s both;
}
@keyframes progressGrow { from{width:0%} }

.preview-leaderboard { }
.lb-item {
  display: flex; align-items: center; gap: 10px; padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05); font-size: 0.8rem;
}
.lb-item:last-child { border-bottom: none; }
.lb-rank { width: 22px; height: 22px; border-radius: 50%; background: var(--bg-mid);
  display: flex; align-items: center; justify-content: center; font-size: 0.7rem; font-weight: 700; }
.lb-rank.gold { background: linear-gradient(135deg, #ffd700, #ffb300); color: #000; }
.lb-rank.silver { background: linear-gradient(135deg, #c0c0c0, #a8a8a8); color: #000; }
.lb-rank.bronze { background: linear-gradient(135deg, #cd7f32, #b8680a); color: #fff; }
.lb-name { flex: 1; }
.lb-pts { font-weight: 700; color: var(--accent); }

.floating-badge {
  position: absolute; padding: 8px 14px; border-radius: 12px;
  font-size: 0.75rem; font-weight: 600;
  background: rgba(15,12,41,0.9); border: 1px solid var(--border);
  backdrop-filter: blur(10px); box-shadow: var(--shadow);
  animation: badgeFloat 4s ease-in-out infinite;
}
.floating-badge.streak { top: -20px; right: 20px; }
.floating-badge.xp { bottom: -10px; left: -20px; }
@keyframes badgeFloat { 0%,100%{transform:translateY(0);} 50%{transform:translateY(-8px); } }

/* ===== SECTION ===== */
.section { padding: 80px 24px; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
  display: inline-block; padding: 4px 14px; border-radius: 50px;
  font-size: 0.75rem; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
  background: rgba(108,99,255,0.15); color: var(--primary); border: 1px solid rgba(108,99,255,0.2);
  margin-bottom: 16px;
}
.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 700; line-height: 1.2;
}
.section-sub { font-size: 1.05rem; color: var(--text-muted); margin-top: 12px; }

/* ===== CARDS ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  backdrop-filter: blur(20px);
  transition: all 0.3s;
  position: relative; overflow: hidden;
}
.card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0); transition: transform 0.3s; transform-origin: left;
}
.card:hover::before { transform: scaleX(1); }
.card:hover { transform: translateY(-4px); box-shadow: var(--glow); border-color: rgba(108,99,255,0.3); }

.card-icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: 16px;
}
.card-icon.purple { background: rgba(108,99,255,0.15); }
.card-icon.pink { background: rgba(255,101,132,0.15); }
.card-icon.green { background: rgba(67,233,123,0.15); }
.card-icon.gold { background: rgba(255,215,0,0.15); }
.card-icon.blue { background: rgba(67,161,255,0.15); }
.card-icon.orange { background: rgba(255,165,0,0.15); }

.card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }

/* ===== GRID ===== */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.max-w { max-width: 1200px; margin: 0 auto; }

/* ===== GAMIFICATION SECTION ===== */
.gamification-showcase {
  background: linear-gradient(135deg, rgba(108,99,255,0.1), rgba(255,101,132,0.05));
  border: 1px solid var(--border); border-radius: 24px;
  padding: 40px; position: relative; overflow: hidden;
}
.gamification-showcase::before {
  content: ''; position: absolute; width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(108,99,255,0.1), transparent);
  top: -100px; right: -100px; pointer-events: none;
}

.badge-grid { display: flex; flex-wrap: wrap; gap: 12px; }
.badge-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 18px;
  background: rgba(255,255,255,0.05); border: 1px solid var(--border);
  border-radius: 50px; font-size: 0.85rem; font-weight: 500;
  transition: all 0.3s; cursor: default;
}
.badge-item:hover {
  background: rgba(108,99,255,0.15); border-color: var(--primary);
  transform: scale(1.05);
}

/* ===== LEADERBOARD ===== */
.leaderboard-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 20px; overflow: hidden;
}
.lb-header {
  padding: 20px 24px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.lb-tabs { display: flex; gap: 4px; background: rgba(255,255,255,0.05); border-radius: 8px; padding: 4px; }
.lb-tab {
  padding: 6px 14px; border-radius: 6px; font-size: 0.8rem; font-weight: 500;
  cursor: pointer; transition: all 0.2s; color: var(--text-muted);
}
.lb-tab.active { background: var(--primary); color: #fff; }

.lb-list { padding: 12px; }
.lb-row {
  display: flex; align-items: center; gap: 14px; padding: 12px;
  border-radius: 12px; transition: all 0.2s; cursor: pointer;
}
.lb-row:hover { background: rgba(255,255,255,0.05); }
.lb-row.top3 { background: rgba(108,99,255,0.08); }
.lb-avatar {
  width: 38px; height: 38px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.9rem; flex-shrink: 0;
}
.lb-info { flex: 1; }
.lb-info-name { font-size: 0.9rem; font-weight: 600; }
.lb-info-meta { font-size: 0.75rem; color: var(--text-muted); }
.lb-score { font-weight: 800; font-family: 'Space Grotesk', sans-serif; color: var(--accent); }

/* ===== AD SPACES ===== */
.ad-space {
  border-radius: 12px;
  border: 2px dashed rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.02);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 0.8rem;
  text-align: center; position: relative; overflow: hidden;
  transition: all 0.3s;
}
.ad-space .ad-label {
  position: absolute; top: 6px; left: 8px;
  font-size: 0.6rem; text-transform: uppercase; letter-spacing: 1px;
  color: rgba(255,255,255,0.2); font-weight: 600;
}
.ad-space.banner { width: 100%; height: 90px; }
.ad-space.ad-sidebar { width: 100%; height: 250px; }
.ad-space.leaderboard { width: 100%; height: 60px; }
.ad-space.rectangle { width: 100%; height: 200px; }

/* ===== POMODORO ===== */
.pomodoro-ring {
  width: 160px; height: 160px; position: relative; margin: 0 auto 20px;
}
.pomodoro-ring svg { transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: rgba(255,255,255,0.1); stroke-width: 8; }
.ring-progress {
  fill: none; stroke: url(#ringGrad); stroke-width: 8;
  stroke-linecap: round; stroke-dasharray: 440;
  stroke-dashoffset: 110;
  transition: stroke-dashoffset 1s ease;
}
.ring-text {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.ring-time { font-size: 2rem; font-weight: 800; font-family: 'Space Grotesk', sans-serif; }
.ring-label { font-size: 0.7rem; color: var(--text-muted); }

/* ===== STREAK ===== */
.streak-counter {
  display: flex; flex-direction: column; align-items: center;
  padding: 20px; background: rgba(255,215,0,0.05);
  border: 1px solid rgba(255,215,0,0.15); border-radius: 16px;
}
.streak-flame { font-size: 3rem; animation: flameFlicker 0.5s ease-in-out infinite alternate; }
@keyframes flameFlicker { from{transform:scale(1) rotate(-3deg);} to{transform:scale(1.1) rotate(3deg);} }
.streak-num { font-size: 2.5rem; font-weight: 900; color: var(--gold); font-family: 'Space Grotesk', sans-serif; }
.streak-label { font-size: 0.8rem; color: var(--text-muted); }

/* ===== STUDY HEATMAP ===== */
.heatmap { display: grid; grid-template-columns: repeat(52, 1fr); gap: 3px; }
.heatmap-cell {
  aspect-ratio: 1; border-radius: 2px; background: rgba(255,255,255,0.05);
  transition: all 0.2s; cursor: pointer;
}
.heatmap-cell:hover { transform: scale(1.5); z-index: 10; }
.heatmap-cell.l1 { background: rgba(108,99,255,0.2); }
.heatmap-cell.l2 { background: rgba(108,99,255,0.4); }
.heatmap-cell.l3 { background: rgba(108,99,255,0.65); }
.heatmap-cell.l4 { background: rgba(108,99,255,0.9); }

/* ===== ADMIN LAYOUT ===== */
.admin-layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 260px; flex-shrink: 0;
  background: rgba(15,12,41,0.95);
  border-right: 1px solid var(--border);
  padding: 24px 0; position: fixed; top: 0; left: 0; height: 100vh;
  overflow-y: auto; z-index: 100;
  display: flex; flex-direction: column;
}
.sidebar-logo {
  padding: 0 24px 24px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
}
.sidebar-logo .logo-icon {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex; align-items: center; justify-content: center; font-size: 1rem;
}
.sidebar-logo span { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1rem; }

.sidebar-nav { padding: 16px 12px; flex: 1; }
.nav-section-label {
  font-size: 0.65rem; font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; color: rgba(255,255,255,0.25);
  padding: 12px 12px 6px;
}
.sidebar-link {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: 10px;
  text-decoration: none; color: var(--text-muted);
  font-size: 0.88rem; font-weight: 500;
  transition: all 0.2s; margin-bottom: 2px;
}
.sidebar-link:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.sidebar-link.active { color: var(--text); background: rgba(108,99,255,0.15); }
.sidebar-link.active .link-icon { color: var(--primary); }
.link-icon { font-size: 1rem; width: 20px; text-align: center; }
.link-badge {
  margin-left: auto; padding: 2px 8px; border-radius: 20px;
  background: var(--primary); color: #fff; font-size: 0.65rem; font-weight: 700;
}

.admin-main { margin-left: 260px; flex: 1; padding: 32px; min-height: 100vh; }
.admin-topbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 32px;
}
.admin-topbar h1 { font-family: 'Space Grotesk', sans-serif; font-size: 1.5rem; font-weight: 700; }
.admin-topbar-actions { display: flex; gap: 12px; align-items: center; }

/* ===== STATS CARDS ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 32px; }
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 16px; padding: 20px; position: relative; overflow: hidden;
}
.stat-card-value { font-size: 2rem; font-weight: 800; font-family: 'Space Grotesk', sans-serif; }
.stat-card-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; }
.stat-card-icon {
  position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  font-size: 2rem; opacity: 0.3;
}
.stat-card-change {
  font-size: 0.75rem; font-weight: 600; margin-top: 8px;
  display: flex; align-items: center; gap: 4px;
}
.stat-card-change.up { color: var(--accent); }
.stat-card-change.down { color: var(--secondary); }

/* ===== FORMS ===== */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 8px; color: var(--text-muted); }
.form-control {
  width: 100%; padding: 12px 16px;
  background: rgba(255,255,255,0.05);
  border: 1.5px solid var(--border); border-radius: 10px;
  color: var(--text); font-size: 0.9rem; font-family: 'Inter', sans-serif;
  transition: all 0.2s; outline: none;
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(108,99,255,0.15); }
.form-control::placeholder { color: rgba(255,255,255,0.25); }
select.form-control option { background: #1a1744; color: #fff; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ===== FILE UPLOAD ===== */
.file-drop {
  border: 2px dashed var(--border); border-radius: 12px;
  padding: 40px 24px; text-align: center;
  transition: all 0.3s; cursor: pointer; position: relative;
}
.file-drop:hover, .file-drop.dragover {
  border-color: var(--primary); background: rgba(108,99,255,0.05);
}
.file-drop input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.file-drop-icon { font-size: 3rem; margin-bottom: 12px; }
.file-drop p { color: var(--text-muted); font-size: 0.9rem; }
.file-drop strong { color: var(--primary); }

/* ===== TABLE ===== */
.table-wrap { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; }
table { width: 100%; border-collapse: collapse; }
th {
  padding: 14px 20px; background: rgba(255,255,255,0.03);
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.8px; color: var(--text-muted); text-align: left;
  border-bottom: 1px solid var(--border);
}
td { padding: 14px 20px; font-size: 0.88rem; border-bottom: 1px solid rgba(255,255,255,0.04); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,0.02); }

.badge-status {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 600;
}
.badge-status.active { background: rgba(67,233,123,0.15); color: var(--accent); }
.badge-status.inactive { background: rgba(255,101,132,0.15); color: var(--secondary); }
.badge-status.pending { background: rgba(255,215,0,0.15); color: var(--gold); }

/* ===== PWA INSTALL ===== */
.pwa-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.pwa-card {
  max-width: 480px; width: 100%;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 28px; padding: 48px 36px; text-align: center;
  backdrop-filter: blur(20px); box-shadow: var(--shadow);
}
.pwa-icon {
  width: 100px; height: 100px; border-radius: 28px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem; margin: 0 auto 28px;
  box-shadow: 0 20px 60px rgba(108,99,255,0.4);
  animation: iconBounce 2s ease-in-out infinite;
}
@keyframes iconBounce { 0%,100%{transform:translateY(0);} 50%{transform:translateY(-10px);} }
.pwa-steps { text-align: left; margin: 28px 0; }
.pwa-step {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.05);
}
.pwa-step:last-child { border-bottom: none; }
.pwa-step-num {
  width: 28px; height: 28px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: 700; flex-shrink: 0;
}
.pwa-step-text { font-size: 0.9rem; color: var(--text-muted); line-height: 1.5; padding-top: 3px; }
.pwa-step-text strong { color: var(--text); }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeInRight { from{opacity:0;transform:translateX(30px)} to{opacity:1;transform:translateX(0)} }
@keyframes fadeIn { from{opacity:0} to{opacity:1} }
@keyframes scaleIn { from{opacity:0;transform:scale(0.9)} to{opacity:1;transform:scale(1)} }
@keyframes slideDown { from{opacity:0;transform:translateY(-10px)} to{opacity:1;transform:translateY(0)} }

.animate-fadeInUp { animation: fadeInUp 0.6s ease both; }
.animate-fadeIn { animation: fadeIn 0.5s ease both; }
.animate-scaleIn { animation: scaleIn 0.4s ease both; }

[data-aos] { opacity: 0; transition: all 0.6s ease; }
[data-aos].aos-animate { opacity: 1; transform: none !important; }
[data-aos="fade-up"] { transform: translateY(30px); }
[data-aos="fade-left"] { transform: translateX(30px); }
[data-aos="fade-right"] { transform: translateX(-30px); }
[data-aos="scale-in"] { transform: scale(0.9); }

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 60px 24px 32px;
  position: relative; overflow: hidden;
}
.footer-content { max-width: 1200px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand p { color: var(--text-muted); font-size: 0.88rem; line-height: 1.7; margin-top: 12px; }
.footer-col h4 { font-size: 0.85rem; font-weight: 700; margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: var(--text-muted); text-decoration: none; font-size: 0.85rem; transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--primary); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between;
  padding-top: 24px; border-top: 1px solid var(--border); font-size: 0.8rem; color: var(--text-muted); }

/* ===== NOTIFICATION TOAST ===== */
.toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 9999; display: flex; flex-direction: column; gap: 10px; }
.toast {
  display: flex; align-items: center; gap: 12px; padding: 14px 20px;
  background: rgba(26,23,68,0.95); border: 1px solid var(--border);
  border-radius: 14px; backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4); min-width: 300px;
  animation: toastIn 0.3s ease, toastOut 0.3s ease 3s both;
}
@keyframes toastIn { from{opacity:0;transform:translateX(100%)} to{opacity:1;transform:translateX(0)} }
@keyframes toastOut { to{opacity:0;transform:translateX(100%)} }
.toast-icon { font-size: 1.2rem; }
.toast-text { flex: 1; font-size: 0.85rem; }
.toast-close { cursor: pointer; color: var(--text-muted); font-size: 1.1rem; }

/* ===== CROSS-BROWSER: webkit prefixes ===== */
.navbar, .card, .dashboard-preview, .leaderboard-card, .mobile-nav,
.toast, .floating-badge, .pwa-card, .sidebar, .file-drop {
  -webkit-backdrop-filter: blur(20px);
}
.gradient-text {
  -webkit-background-clip: text !important;
  background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
}
.progress-fill {
  background: -webkit-linear-gradient(90deg, var(--primary), var(--accent));
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

/* ===== ADMIN BAR ===== */
.admin-bar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 9998;
  background: rgba(20,10,50,0.97);
  border-bottom: 2px solid var(--primary);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  display: flex; align-items: center; gap: 12px;
  padding: 8px 20px; font-size: 0.82rem;
  box-shadow: 0 4px 20px rgba(108,99,255,0.3);
}
.admin-bar-label { color: var(--primary); font-weight: 700; }
.admin-bar-sep { color: rgba(255,255,255,0.2); }
.admin-bar .btn { padding: 5px 14px; font-size: 0.78rem; }
.admin-bar-right { margin-left: auto; display: flex; gap: 8px; align-items: center; }

body.has-admin-bar .navbar { top: 42px; }
body.has-admin-bar main, body.has-admin-bar section:first-of-type { padding-top: 0; }
body.has-admin-bar .hero { padding-top: 160px; }

/* ===== EDIT MODE ===== */
body.edit-mode [data-editable] {
  outline: 2px dashed rgba(108,99,255,0.6);
  outline-offset: 4px;
  cursor: text !important;
  border-radius: 4px;
  transition: outline 0.2s;
  min-width: 20px; min-height: 1em;
}
body.edit-mode [data-editable]:hover { outline-color: var(--primary); background: rgba(108,99,255,0.05); }
body.edit-mode [data-editable]:focus { outline-color: var(--accent); outline-style: solid; }

.edit-toolbar {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  z-index: 9997; background: rgba(15,12,41,0.97);
  border: 1px solid rgba(108,99,255,0.4);
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  border-radius: 50px; padding: 10px 20px;
  display: flex; align-items: center; gap: 10px;
  box-shadow: 0 8px 40px rgba(108,99,255,0.3);
  animation: fadeInUp 0.3s ease;
  flex-wrap: wrap; justify-content: center;
}
.edit-toolbar .btn { padding: 6px 14px; font-size: 0.8rem; }
.edit-toolbar-sep { width: 1px; height: 20px; background: rgba(255,255,255,0.15); }
.edit-saved {
  position: fixed; bottom: 90px; left: 50%; transform: translateX(-50%);
  background: rgba(67,233,123,0.2); border: 1px solid var(--accent);
  color: var(--accent); padding: 8px 20px; border-radius: 50px;
  font-size: 0.82rem; font-weight: 600; z-index: 9997;
  animation: fadeInUp 0.3s ease, fadeOut 0.3s ease 1.5s both;
}
@keyframes fadeOut { to { opacity: 0; transform: translateX(-50%) translateY(10px); } }

/* ===== AD ZONE SYSTEM ===== */
.ad-space { transition: all 0.3s; }
.ad-space.ad-hidden { display: none !important; }
.ad-space.has-image { border: none; background: transparent; overflow: hidden; padding: 0; }
.ad-space.has-image img { width: 100%; height: 100%; object-fit: cover; display: block; }
.ad-space.has-image .ad-label { display: none; }

/* Ad toggle in admin */
.toggle-switch {
  position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; cursor: pointer; inset: 0;
  background: rgba(255,255,255,0.1); border-radius: 24px; transition: 0.3s;
}
.toggle-slider::before {
  content: ''; position: absolute; height: 18px; width: 18px;
  left: 3px; bottom: 3px; background: white; border-radius: 50%; transition: 0.3s;
}
.toggle-switch input:checked + .toggle-slider { background: var(--primary); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(20px); }

/* Section visibility toggle in edit mode */
.section-toggle-btn {
  display: none; position: absolute; top: 8px; right: 8px; z-index: 100;
  background: rgba(255,101,132,0.15); border: 1px solid rgba(255,101,132,0.3);
  color: var(--secondary); padding: 4px 10px; border-radius: 8px;
  font-size: 0.72rem; cursor: pointer; font-weight: 600;
}
body.edit-mode .section-relative { position: relative; }
body.edit-mode .section-toggle-btn { display: block; }
.section-hidden-overlay {
  display: none; position: absolute; inset: 0; z-index: 50;
  background: repeating-linear-gradient(45deg, rgba(255,101,132,0.05), rgba(255,101,132,0.05) 10px, transparent 10px, transparent 20px);
  border: 2px dashed rgba(255,101,132,0.3); pointer-events: none;
}
body.edit-mode .section-hidden .section-hidden-overlay { display: block; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .game-grid { grid-template-columns: 1fr !important; }
  .lb-sidebar-grid { grid-template-columns: 1fr !important; }
}

@media (max-width: 768px) {
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .admin-layout { flex-direction: column; }
  .sidebar {
    width: 100%; height: auto; position: relative;
    transform: none !important;
  }
  .admin-main { margin-left: 0; padding: 16px; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .heatmap { grid-template-columns: repeat(26,1fr); }
  /* Admin page sections */
  .admin-topbar { flex-direction: column; align-items: flex-start; gap: 12px; }
  .admin-topbar-actions { width: 100%; }
  .admin-topbar-actions .btn { width: 100%; justify-content: center; }
  /* Tables scroll on mobile */
  .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  table { min-width: 600px; }
  /* Edit toolbar on mobile */
  .edit-toolbar { bottom: 12px; left: 12px; right: 12px; transform: none; border-radius: 16px; }
  /* Admin bar */
  .admin-bar { padding: 6px 12px; gap: 8px; flex-wrap: wrap; }
  body.has-admin-bar .hero { padding-top: 180px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 2rem; }
  .pwa-card { padding: 32px 20px; }
  .section { padding: 48px 16px; }
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  /* game stats grid */
  .game-stats-grid { grid-template-columns: 1fr 1fr !important; }
}

/* ===== SAFARI FIXES ===== */
@supports not (gap: 1px) {
  /* Safari < 14 flexbox gap fallback */
  .hero-actions > * + * { margin-left: 12px; }
  .nav-links > * + * { margin-left: 4px; }
}

/* ===== FIREFOX FIXES ===== */
@-moz-document url-prefix() {
  .gradient-text { background: none !important; -moz-text-fill-color: var(--primary) !important; color: var(--primary) !important; }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(108,99,255,0.3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ===== GLOW EFFECTS ===== */
.glow-primary { box-shadow: 0 0 20px rgba(108,99,255,0.4); }
.glow-secondary { box-shadow: 0 0 20px rgba(255,101,132,0.4); }
.glow-accent { box-shadow: 0 0 20px rgba(67,233,123,0.4); }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.text-secondary { color: var(--secondary); }
.text-gold { color: var(--gold); }
.text-muted { color: var(--text-muted); }
.font-mono { font-family: 'Space Grotesk', sans-serif; }
.fw-800 { font-weight: 800; }
.mb-4 { margin-bottom: 16px; }
.mb-8 { margin-bottom: 32px; }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.p-6 { padding: 24px; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.w-full { width: 100%; }

/* ── News Ticker ─────────────────────────────────────── */
.news-ticker{display:flex;align-items:center;gap:0;background:rgba(18,14,45,0.97);border-top:1px solid rgba(108,99,255,0.35);border-bottom:2px solid rgba(108,99,255,0.4);height:38px;overflow:hidden;position:fixed;top:68px;left:0;right:0;z-index:999;backdrop-filter:blur(10px);}
.ticker-label{background:linear-gradient(135deg,#6c63ff,#ff6584);color:#fff;font-size:0.7rem;font-weight:800;padding:0 16px;height:100%;display:flex;align-items:center;letter-spacing:0.05em;white-space:nowrap;flex-shrink:0;box-shadow:4px 0 12px rgba(108,99,255,0.3);}
.ticker-wrap{flex:1;overflow:hidden;height:100%;position:relative;}
.ticker-content{display:inline-block;white-space:nowrap;font-size:0.8rem;color:#c8c4ff;font-weight:500;animation:ticker 55s linear infinite;padding-left:100%;}
.ticker-content:hover{animation-play-state:paused;}
@keyframes ticker{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* ── Exam Countdown ──────────────────────────────────── */
.exam-countdown{display:flex;gap:12px;flex-wrap:wrap;}
.countdown-block{background:rgba(108,99,255,0.1);border:1px solid rgba(108,99,255,0.2);border-radius:12px;padding:14px 18px;text-align:center;flex:1;min-width:120px;}
.countdown-num{font-size:2rem;font-weight:800;font-family:'Space Grotesk',sans-serif;color:var(--primary);}
.countdown-unit{font-size:0.7rem;color:var(--text-muted);margin-top:2px;}
.countdown-label{font-size:0.8rem;font-weight:600;margin-bottom:8px;}

/* Adjust body padding for ticker */
body { padding-top: 0; }
.dash-grid { padding-top: 120px !important; }

/* ticker always visible */
.news-ticker { display:flex!important; visibility:visible!important; opacity:1!important; }


/* ══ NEWS TICKER OVERRIDE — always show ══════════════════════════ */
.news-ticker {
  display: flex !important;
  visibility: visible !important;
  opacity: 1 !important;
  position: fixed !important;
  top: 68px !important;
  left: 0 !important;
  right: 0 !important;
  z-index: 9990 !important;
  height: 38px !important;
  overflow: hidden !important;
  background: #100e2b !important;
  border-bottom: 2px solid rgba(108,99,255,0.6) !important;
  border-top: 1px solid rgba(108,99,255,0.3) !important;
  box-shadow: 0 2px 16px rgba(108,99,255,0.25) !important;
  backdrop-filter: blur(10px) !important;
}
.ticker-label {
  background: linear-gradient(135deg, #6c63ff, #ff6584) !important;
  color: #fff !important;
  font-size: 0.7rem !important;
  font-weight: 800 !important;
  padding: 0 16px !important;
  height: 100% !important;
  display: flex !important;
  align-items: center !important;
  letter-spacing: 0.05em !important;
  white-space: nowrap !important;
  flex-shrink: 0 !important;
  box-shadow: 4px 0 16px rgba(108,99,255,0.4) !important;
}
.ticker-wrap {
  flex: 1 !important;
  overflow: hidden !important;
  height: 100% !important;
  position: relative !important;
}
.ticker-content {
  display: inline-block !important;
  white-space: nowrap !important;
  font-size: 0.82rem !important;
  color: #c8c4ff !important;
  font-weight: 500 !important;
  line-height: 38px !important;
  animation: ticker 55s linear infinite !important;
  padding-left: 100% !important;
}
.ticker-content:hover { animation-play-state: paused !important; }
@keyframes ticker { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* Dashboard padding accounts for navbar + ticker */
.dash-grid { padding-top: 116px !important; }
/* ════════════════════════════════════════════════════════════════ */


/* ════════════════════════════════════════════════════════════════
   CS NEWS TICKER — 2026-06-27 10:31:01
   ════════════════════════════════════════════════════════════════ */
.cs-news-ticker {
  display: flex !important;
  align-items: center !important;
  position: fixed !important;
  top: 68px !important;
  left: 0 !important;
  right: 0 !important;
  height: 36px !important;
  z-index: 9999 !important;
  background: #0e0c20 !important;
  border-bottom: 2px solid rgba(108,99,255,0.55) !important;
  overflow: hidden !important;
  box-shadow: 0 2px 20px rgba(108,99,255,0.3) !important;
}
.cnt-ticker-label {
  background: linear-gradient(135deg,#6c63ff,#ff6584) !important;
  color: #fff !important;
  font-size: 0.68rem !important;
  font-weight: 800 !important;
  padding: 0 14px !important;
  height: 36px !important;
  display: flex !important;
  align-items: center !important;
  letter-spacing: 0.06em !important;
  white-space: nowrap !important;
  flex-shrink: 0 !important;
}
.cnt-ticker-wrap {
  flex: 1 !important;
  overflow: hidden !important;
  height: 36px !important;
  position: relative !important;
}
.cnt-ticker-scroll {
  display: inline-block !important;
  white-space: nowrap !important;
  font-size: 0.8rem !important;
  font-weight: 500 !important;
  color: #c4bfff !important;
  line-height: 36px !important;
  padding-left: 100% !important;
  animation: csTicker 60s linear infinite !important;
}
.cnt-ticker-scroll:hover { animation-play-state: paused !important; }
@keyframes csTicker {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
/* Push page content below ticker */
body > div.bg-animated ~ nav + .cs-news-ticker + * { margin-top: 36px; }
.dash-grid { padding-top: 118px !important; }
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