/* ============================================================
   MEB AKADEMİ HAZIRLIK - Ana Stil Dosyası
   Premium Dark UI + Glassmorphism + Gradient System
   ============================================================ */

@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;
  --primary-light: #8B83FF;
  --primary-dark: #4A3FD4;
  --secondary: #00D4AA;
  --accent: #FF6B6B;
  --gold: #FFD700;
  --warning: #FF9F43;

  --bg-base: #0A0B1A;
  --bg-surface: #0F1029;
  --bg-card: #141530;
  --bg-card-hover: #1A1C3A;
  --bg-glass: rgba(20, 21, 48, 0.7);

  --text-primary: #E8EAFF;
  --text-secondary: #9CA3C8;
  --text-muted: #5C6080;

  --border: rgba(108, 99, 255, 0.2);
  --border-hover: rgba(108, 99, 255, 0.5);
  --border-glass: rgba(255,255,255,0.08);

  --gradient-hero: linear-gradient(135deg, #0A0B1A 0%, #141540 50%, #0F1029 100%);
  --gradient-primary: linear-gradient(135deg, #6C63FF, #00D4AA);
  --gradient-hot: linear-gradient(135deg, #FF6B6B, #FF9F43);
  --gradient-cool: linear-gradient(135deg, #6C63FF, #3C8CE7);
  --gradient-gold: linear-gradient(135deg, #FFD700, #FF9F43);
  --gradient-card: linear-gradient(135deg, rgba(108,99,255,0.1), rgba(0,212,170,0.05));

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(108,99,255,0.3);
  --shadow-glow-green: 0 0 40px rgba(0,212,170,0.3);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ==================== SCROLLBAR ==================== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ==================== TYPOGRAPHY ==================== */
h1, h2, h3, h4, h5, h6 { font-family: 'Space Grotesk', sans-serif; font-weight: 700; line-height: 1.2; }

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gradient-text-hot {
  background: var(--gradient-hot);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gradient-text-gold {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==================== BUTTONS ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-full);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  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-hot {
  background: var(--gradient-hot);
  color: white;
  box-shadow: 0 4px 20px rgba(255,107,107,0.4);
}
.btn-hot:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255,107,107,0.6); }

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-primary);
}
.btn-outline:hover { border-color: var(--primary); background: rgba(108,99,255,0.1); transform: translateY(-2px); }

.btn-ghost {
  background: rgba(108,99,255,0.1);
  color: var(--primary-light);
}
.btn-ghost:hover { background: rgba(108,99,255,0.2); }

.btn-lg { padding: 16px 36px; font-size: 1.05rem; }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-icon { padding: 10px; border-radius: 50%; }

/* ==================== CARDS ==================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: var(--transition);
}
.card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-glow); transform: translateY(-4px); }
.card:hover::before { opacity: 1; }
.card > * { position: relative; z-index: 1; }

.card-glass {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
}

/* ==================== NAVBAR ==================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 11, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.navbar-logo {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 900;
  color: white;
}

.navbar-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.navbar-subtitle {
  font-size: 0.65rem;
  color: var(--secondary);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.navbar-nav a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
}
.navbar-nav a:hover, .navbar-nav a.active {
  background: rgba(108,99,255,0.15);
  color: var(--primary-light);
}
.navbar-nav a.active { color: var(--primary); }

.navbar-actions { display: flex; align-items: center; gap: 12px; }

.xp-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,215,0,0.1);
  border: 1px solid rgba(255,215,0,0.3);
  border-radius: var(--radius-full);
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gold);
}

.streak-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,107,107,0.1);
  border: 1px solid rgba(255,107,107,0.3);
  border-radius: var(--radius-full);
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
}

/* ==================== HERO SECTION ==================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
}

.hero-orbs {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: orbFloat 8s ease-in-out infinite;
}
.orb-1 { width: 500px; height: 500px; background: rgba(108,99,255,0.15); top: -100px; right: -100px; animation-delay: 0s; }
.orb-2 { width: 400px; height: 400px; background: rgba(0,212,170,0.1); bottom: 0; left: -80px; animation-delay: -3s; }
.orb-3 { width: 300px; height: 300px; background: rgba(255,107,107,0.08); top: 30%; left: 40%; animation-delay: -5s; }

@keyframes orbFloat {
  0%, 100% { transform: translate(0,0) scale(1); }
  33% { transform: translate(20px,-20px) scale(1.05); }
  66% { transform: translate(-10px,15px) scale(0.95); }
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(108,99,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108,99,255,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(108,99,255,0.15);
  border: 1px solid rgba(108,99,255,0.4);
  border-radius: var(--radius-full);
  padding: 8px 18px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }

.hero-stats {
  display: flex;
  gap: 36px;
}

.hero-stat-item { text-align: center; }
.hero-stat-value { font-size: 2rem; font-weight: 800; }
.hero-stat-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-top: 2px; }

.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ==================== COUNTDOWN ==================== */
.countdown-card {
  background: var(--bg-card);
  border: 1px solid rgba(108,99,255,0.3);
  border-radius: var(--radius-xl);
  padding: 32px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.countdown-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-primary);
}
.countdown-title { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--secondary); margin-bottom: 20px; }
.countdown-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
.countdown-unit { display: flex; flex-direction: column; gap: 4px; }
.countdown-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.countdown-label { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); }
.exam-date-info { font-size: 0.8rem; color: var(--text-secondary); }

/* ==================== PROGRESS RING ==================== */
.mini-progress-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.mini-progress-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
  cursor: pointer;
}
.mini-progress-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }

.mini-progress-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.mini-progress-info { flex: 1; min-width: 0; }
.mini-progress-name { font-size: 0.8rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mini-progress-bar-wrap { margin-top: 6px; height: 4px; background: rgba(255,255,255,0.06); border-radius: 2px; overflow: hidden; }
.mini-progress-bar { height: 100%; border-radius: 2px; transition: width 1s ease; }
.mini-progress-pct { font-size: 0.7rem; color: var(--text-muted); margin-top: 3px; }

/* ==================== SECTIONS ==================== */
.section { padding: 80px 24px; }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.15em; color: var(--secondary); font-weight: 600; margin-bottom: 12px; }
.section-title { font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 16px; }
.section-subtitle { font-size: 1rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto; line-height: 1.7; }

/* ==================== FEATURE MODULES ==================== */
.modules-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; }

.module-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.module-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
}
.module-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--border-hover); }

.module-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.module-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.module-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
.module-desc { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 20px; }
.module-features { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.module-features li { font-size: 0.8rem; color: var(--text-secondary); display: flex; align-items: center; gap: 8px; }
.module-features li::before { content: '→'; color: var(--secondary); font-weight: 700; flex-shrink: 0; }

/* ==================== SUBJECT CARDS ==================== */
.subjects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.subject-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.subject-card:hover { border-color: var(--border-hover); transform: translateY(-4px); box-shadow: var(--shadow-md); }

.subject-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 16px; }
.subject-icon { font-size: 2rem; }
.subject-count {
  background: rgba(108,99,255,0.15);
  border: 1px solid rgba(108,99,255,0.3);
  border-radius: var(--radius-full);
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-light);
}

.subject-name { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.subject-topics { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 16px; }

.subject-progress-wrap { margin-bottom: 8px; }
.subject-progress-bar-bg { height: 6px; background: rgba(255,255,255,0.06); border-radius: 3px; overflow: hidden; }
.subject-progress-bar { height: 100%; border-radius: 3px; transition: width 1.2s ease; }
.subject-progress-info { display: flex; justify-content: space-between; margin-top: 6px; }
.subject-progress-info span { font-size: 0.7rem; color: var(--text-muted); }

/* ==================== LEADERBOARD ==================== */
.leaderboard-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px;
}

.leaderboard-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.leaderboard-item:last-child { border-bottom: none; }

.leaderboard-rank {
  width: 32px;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 700;
}
.leaderboard-rank.gold { color: #FFD700; }
.leaderboard-rank.silver { color: #C0C0C0; }
.leaderboard-rank.bronze { color: #CD7F32; }

.leaderboard-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.leaderboard-name { flex: 1; font-size: 0.9rem; font-weight: 600; }
.leaderboard-score { font-size: 0.875rem; color: var(--secondary); font-weight: 600; }

/* ==================== EXAM INTERFACE ==================== */
.exam-wrapper {
  max-width: 900px;
  margin: 0 auto;
  padding: 100px 24px 60px;
}

.exam-header {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 20px 28px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.exam-timer {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.5rem;
  font-weight: 800;
  font-family: 'Space Grotesk', sans-serif;
}
.exam-timer.warning { color: var(--warning); }
.exam-timer.danger { color: var(--accent); animation: pulse 1s infinite; }

@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }

.exam-progress-bar-wrap { flex: 1; }
.exam-progress-label { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 6px; }
.exam-progress-bar-bg { height: 8px; background: rgba(255,255,255,0.06); border-radius: 4px; overflow: hidden; }
.exam-progress-bar-fill { height: 100%; background: var(--gradient-primary); border-radius: 4px; transition: width 0.3s ease; }

.exam-info { display: flex; gap: 12px; font-size: 0.8rem; color: var(--text-secondary); align-items: center; }

.question-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
  margin-bottom: 20px;
}

.question-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.question-number {
  background: var(--gradient-primary);
  color: white;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.question-category-badge {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.question-difficulty {
  display: flex;
  gap: 3px;
}
.difficulty-star { font-size: 0.7rem; }

.question-text {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 28px;
  color: var(--text-primary);
}

.options-list { display: flex; flex-direction: column; gap: 12px; }

.option-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
  color: var(--text-primary);
  font-size: 0.9rem;
  line-height: 1.5;
  width: 100%;
}

.option-key {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: rgba(108,99,255,0.1);
  border: 1px solid rgba(108,99,255,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--primary-light);
  flex-shrink: 0;
  transition: var(--transition);
}

.option-btn:hover { border-color: var(--primary); background: rgba(108,99,255,0.08); }
.option-btn:hover .option-key { background: var(--primary); color: white; border-color: var(--primary); }

.option-btn.selected { border-color: var(--primary); background: rgba(108,99,255,0.12); }
.option-btn.selected .option-key { background: var(--primary); color: white; border-color: var(--primary); }
.option-btn.correct { border-color: var(--secondary); background: rgba(0,212,170,0.1); }
.option-btn.correct .option-key { background: var(--secondary); color: #000; border-color: var(--secondary); }
.option-btn.wrong { border-color: var(--accent); background: rgba(255,107,107,0.1); }
.option-btn.wrong .option-key { background: var(--accent); color: white; border-color: var(--accent); }
.option-btn:disabled { cursor: not-allowed; }

.explanation-box {
  margin-top: 20px;
  padding: 20px;
  background: rgba(0,212,170,0.08);
  border: 1px solid rgba(0,212,170,0.25);
  border-radius: var(--radius-md);
  display: none;
}
.explanation-box.show { display: block; animation: fadeIn 0.3s ease; }
.explanation-title { font-size: 0.8rem; font-weight: 700; color: var(--secondary); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 8px; }
.explanation-text { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }

.exam-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.question-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
  gap: 6px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  margin-bottom: 20px;
}

.q-nav-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255,255,255,0.03);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.q-nav-btn:hover { border-color: var(--primary); color: var(--primary); }
.q-nav-btn.answered { background: rgba(108,99,255,0.2); border-color: var(--primary); color: var(--primary-light); }
.q-nav-btn.current { background: var(--primary); color: white; border-color: var(--primary); }
.q-nav-btn.correct-nav { background: rgba(0,212,170,0.2); border-color: var(--secondary); color: var(--secondary); }
.q-nav-btn.wrong-nav { background: rgba(255,107,107,0.2); border-color: var(--accent); color: var(--accent); }

/* ==================== RESULTS ==================== */
.results-wrapper {
  max-width: 800px;
  margin: 0 auto;
  padding: 100px 24px 60px;
}

.score-ring-container {
  display: flex;
  justify-content: center;
  margin-bottom: 32px;
}

.score-ring {
  position: relative;
  width: 160px;
  height: 160px;
}

.score-ring svg { transform: rotate(-90deg); }

.score-ring-text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.score-ring-value { font-size: 2.2rem; font-weight: 800; line-height: 1; }
.score-ring-label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; }

.results-breakdown { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 28px; }

.breakdown-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
}
.breakdown-icon { font-size: 1.5rem; margin-bottom: 8px; }
.breakdown-value { font-size: 1.5rem; font-weight: 800; margin-bottom: 4px; }
.breakdown-label { font-size: 0.75rem; color: var(--text-muted); }

/* ==================== STUDY MODULE ==================== */
/* ==================== STUDY SIDEBAR LAYOUT ==================== */
.study-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  align-items: start;
  min-height: calc(100vh - 72px);
}

.study-sidebar {
  position: sticky;
  top: 72px;
  height: calc(100vh - 72px);
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--bg-surface);
  padding: 8px 0 40px;
  scrollbar-width: thin;
  scrollbar-color: rgba(108,99,255,0.2) transparent;
}
.study-sidebar::-webkit-scrollbar { width: 4px; }
.study-sidebar::-webkit-scrollbar-track { background: transparent; }
.study-sidebar::-webkit-scrollbar-thumb { background: rgba(108,99,255,0.2); border-radius: 4px; }

.sidebar-section-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  padding: 16px 16px 6px;
}
.sidebar-section-label:first-child { padding-top: 8px; }

.sidebar-cat-item { }

.cat-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 10px 14px 10px 16px;
  border: none;
  border-left: 3px solid transparent;
  border-radius: 0 6px 6px 0;
  margin-right: 8px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.83rem;
  font-weight: 500;
  text-align: left;
  transition: var(--transition);
  width: calc(100% - 8px);
}
.cat-tab:hover {
  background: rgba(108,99,255,0.08);
  color: var(--text-primary);
}
.cat-tab.active {
  background: rgba(108,99,255,0.14);
  color: var(--primary-light);
  font-weight: 600;
  border-left-color: var(--primary);
}

.tab-count {
  font-size: 0.6rem;
  color: var(--text-muted);
  background: rgba(255,255,255,0.07);
  padding: 2px 6px;
  border-radius: 20px;
  font-weight: 600;
}
.cat-tab.active .tab-count {
  color: var(--primary-light);
  background: rgba(108,99,255,0.22);
}

.sidebar-chevron {
  margin-left: auto;
  font-size: 1rem;
  color: var(--text-muted);
  transition: transform 0.22s ease;
  flex-shrink: 0;
  opacity: 0.6;
}
.cat-tab:hover .sidebar-chevron { opacity: 1; }
.cat-tab.active .sidebar-chevron {
  transform: rotate(90deg);
  color: var(--primary-light);
  opacity: 1;
}

.sidebar-sub-list {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s ease;
}
.sidebar-sub-list.open { max-height: 600px; }

.sub-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  width: calc(100% - 8px);
  padding: 7px 12px 7px 36px;
  border: none;
  border-left: 3px solid transparent;
  border-radius: 0 6px 6px 0;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.78rem;
  text-align: left;
  transition: var(--transition);
}
.sub-tab::before {
  content: '·';
  color: var(--text-muted);
  margin-right: 2px;
  font-size: 1rem;
  line-height: 1;
}
.sub-tab:hover {
  background: rgba(108,99,255,0.06);
  color: var(--text-secondary);
}
.sub-tab.active {
  color: var(--primary-light);
  font-weight: 600;
  background: rgba(108,99,255,0.1);
  border-left-color: rgba(108,99,255,0.5);
}
.sub-tab.active::before { color: var(--primary-light); }

/* İçerik alanı */
.study-content-area {
  padding: 28px 28px 60px;
  min-width: 0;
}

.content-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
}

.content-title { font-size: 1.5rem; margin-bottom: 8px; }
.content-subtitle { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 28px; }

.content-body { line-height: 1.8; color: var(--text-secondary); }
.content-body h3 { color: var(--text-primary); margin: 24px 0 12px; font-size: 1.1rem; }
.content-body p { margin-bottom: 16px; }
.content-body ul { padding-left: 20px; margin-bottom: 16px; }
.content-body li { margin-bottom: 8px; }

.highlight-box {
  background: rgba(108,99,255,0.08);
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  margin: 20px 0;
}
.highlight-box.green { background: rgba(0,212,170,0.08); border-color: var(--secondary); }
.highlight-box.red { background: rgba(255,107,107,0.08); border-color: var(--accent); }

.key-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 20px 0;
}
.key-point {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px;
  font-size: 0.875rem;
}
.key-point-title { font-weight: 700; color: var(--primary-light); margin-bottom: 4px; font-size: 0.8rem; }

/* ==================== HISTORY AUDIO-VISUAL STUDIO ==================== */
.history-studio {
  --history-accent: #FF9F43;
  position: relative;
  overflow: hidden;
  margin: 8px 0 30px;
  padding: 22px;
  border: 1px solid color-mix(in srgb, var(--history-accent) 38%, transparent);
  border-radius: 20px;
  background:
    radial-gradient(circle at 8% 0%, color-mix(in srgb, var(--history-accent) 18%, transparent), transparent 34%),
    linear-gradient(145deg, rgba(13,14,35,0.98), rgba(22,23,54,0.96));
  box-shadow: 0 18px 54px rgba(0,0,0,0.24);
  transition: border-color 0.3s ease, background 0.3s ease;
}

.history-studio::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,0.09) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: linear-gradient(to bottom, black, transparent 70%);
  opacity: 0.16;
}

.history-studio > * { position: relative; z-index: 1; }

.history-studio-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.history-studio-header h3 {
  margin: 4px 0 6px;
  color: var(--text-primary);
  font-size: 1.2rem;
}

.history-studio-header p {
  max-width: 680px;
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.82rem;
  line-height: 1.55;
}

.history-audio-quality {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 9px;
  padding: 4px 9px;
  border: 1px solid rgba(0,212,170,0.28);
  border-radius: 99px;
  color: var(--secondary);
  background: rgba(0,212,170,0.07);
  font-size: 0.62rem;
  font-weight: 700;
}

.history-scene-total {
  display: inline-flex;
  margin: 9px 0 0 5px;
  padding: 4px 9px;
  border: 1px solid color-mix(in srgb, var(--history-accent) 30%, transparent);
  border-radius: 99px;
  color: var(--history-accent);
  background: color-mix(in srgb, var(--history-accent) 7%, transparent);
  font-size: 0.62rem;
  font-weight: 700;
}

.history-audio-quality::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 9px currentColor;
}

.history-audio-quality.fallback {
  border-color: rgba(255,159,67,0.3);
  color: var(--warning);
  background: rgba(255,159,67,0.07);
}

.history-studio-kicker {
  color: var(--history-accent);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.history-audio-bars {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  width: 54px;
  height: 38px;
  flex: 0 0 auto;
  border: 1px solid color-mix(in srgb, var(--history-accent) 35%, transparent);
  border-radius: 12px;
  background: color-mix(in srgb, var(--history-accent) 8%, transparent);
}

.history-audio-bars span {
  width: 3px;
  height: 6px;
  border-radius: 3px;
  background: var(--history-accent);
}

.history-studio.is-speaking .history-audio-bars span {
  animation: historyAudioBar 0.7s ease-in-out infinite alternate;
}
.history-studio.is-speaking .history-audio-bars span:nth-child(2) { animation-delay: 0.14s; }
.history-studio.is-speaking .history-audio-bars span:nth-child(3) { animation-delay: 0.28s; }
.history-studio.is-speaking .history-audio-bars span:nth-child(4) { animation-delay: 0.08s; }
.history-studio.is-speaking .history-audio-bars span:nth-child(5) { animation-delay: 0.22s; }

.history-progress {
  height: 5px;
  overflow: hidden;
  margin-bottom: 20px;
  border-radius: 99px;
  background: rgba(255,255,255,0.07);
}

.history-progress-fill {
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--history-accent), #00D4AA);
  transition: width 0.35s ease;
}

.history-mastery-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(80px, 1fr)) auto;
  gap: 8px;
  align-items: stretch;
  margin: -4px 0 16px;
}

.history-mastery-panel > div {
  display: grid;
  gap: 2px;
  padding: 8px 10px;
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 9px;
  background: rgba(255,255,255,0.025);
}

.history-mastery-panel span {
  color: var(--text-muted);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.history-mastery-panel strong {
  color: var(--text-primary);
  font-size: 0.84rem;
}

.history-mastery-panel .btn {
  min-height: 48px;
}

.history-studio.is-reviewing .history-mastery-panel {
  border-radius: 10px;
  box-shadow: 0 0 0 1px rgba(255,159,67,0.35);
}

.history-player-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.95fr) minmax(280px, 1.05fr);
  gap: 16px;
}

.history-visual-stage {
  position: relative;
  display: flex;
  min-height: 330px;
  overflow: hidden;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px 20px 22px;
  border: 1px solid color-mix(in srgb, var(--history-accent) 28%, transparent);
  border-radius: 18px;
  background:
    radial-gradient(circle at 50% 40%, color-mix(in srgb, var(--history-accent) 28%, transparent), transparent 37%),
    rgba(255,255,255,0.025);
  text-align: center;
}

.history-visual-stage::after {
  content: '';
  position: absolute;
  bottom: -44px;
  width: 210px;
  height: 70px;
  border-radius: 50%;
  background: var(--history-accent);
  filter: blur(38px);
  opacity: 0.16;
}

.history-real-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.history-visual-stage.has-real-visual {
  align-items: flex-start;
  justify-content: flex-end;
  text-align: left;
}

.history-visual-stage.has-real-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(8,9,25,0.05) 24%, rgba(8,9,25,0.78) 66%, rgba(8,9,25,0.97) 100%);
}

.history-visual-stage.has-real-visual .history-orbit,
.history-visual-stage.has-real-visual .history-scene-icon {
  display: none;
}

.history-visual-credit {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 3;
  max-width: calc(100% - 20px);
  padding: 5px 8px;
  border: 1px solid rgba(255,255,255,0.24);
  border-radius: 7px;
  color: rgba(255,255,255,0.88);
  background: rgba(8,9,25,0.72);
  backdrop-filter: blur(8px);
  font-size: 0.58rem;
  line-height: 1.35;
  text-decoration: none;
}

.history-visual-credit:hover {
  color: white;
  border-color: var(--history-accent);
}

.history-visual-caption {
  position: relative;
  z-index: 2;
  margin: -5px 0 10px;
  color: rgba(255,255,255,0.72);
  font-size: 0.65rem;
  line-height: 1.4;
}

.history-scene-icon {
  position: relative;
  z-index: 2;
  font-size: 5rem;
  line-height: 1;
  filter: drop-shadow(0 15px 22px rgba(0,0,0,0.36));
}

.history-orbit {
  position: absolute;
  top: 42%;
  left: 50%;
  width: 210px;
  height: 210px;
  margin: -105px 0 0 -105px;
  border: 1px dashed color-mix(in srgb, var(--history-accent) 42%, transparent);
  border-radius: 50%;
  animation: historyOrbit 18s linear infinite;
}

.history-orbit span {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  margin: -19px;
  border: 1px solid color-mix(in srgb, var(--history-accent) 38%, transparent);
  border-radius: 50%;
  background: #171833;
  font-size: 1.1rem;
  transform: rotate(calc(var(--orbit-index) * 120deg)) translateX(105px) rotate(calc(var(--orbit-index) * -120deg));
}

.history-scene-era {
  z-index: 2;
  margin-top: 34px;
  padding: 4px 10px;
  border: 1px solid color-mix(in srgb, var(--history-accent) 46%, transparent);
  border-radius: 99px;
  color: var(--history-accent);
  background: color-mix(in srgb, var(--history-accent) 10%, transparent);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.history-scene-title {
  z-index: 2;
  margin: 9px 0 12px;
  color: var(--text-primary);
  font-size: 1.15rem;
}

.history-fact-list {
  z-index: 2;
  display: flex;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
}

.history-fact-list li {
  margin: 0;
  padding: 5px 8px;
  border-radius: 7px;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.055);
  font-size: 0.68rem;
}

.history-story-panel {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 20px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  background: rgba(255,255,255,0.025);
}

.history-scene-count {
  align-self: flex-end;
  color: var(--history-accent);
  font-size: 0.7rem;
  font-weight: 800;
}

.history-caption {
  flex: 1;
  margin: 14px 0 18px;
  color: var(--text-primary);
  font-size: 0.94rem;
  line-height: 1.75;
}

.captions-hidden .history-caption {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.history-memory-card,
.history-exam-card {
  display: grid;
  gap: 5px;
  margin-top: 9px;
  padding: 12px 14px;
  border-radius: 11px;
}

.history-memory-card {
  border: 1px solid rgba(155,89,182,0.3);
  background: rgba(155,89,182,0.09);
}

.history-exam-card {
  border: 1px solid rgba(0,212,170,0.26);
  background: rgba(0,212,170,0.07);
}

.history-memory-card span,
.history-exam-card span {
  color: var(--text-secondary);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.history-memory-card strong,
.history-exam-card strong {
  color: var(--text-primary);
  font-size: 0.78rem;
  line-height: 1.5;
}

.history-scene-quiz {
  display: none;
  gap: 10px;
  margin-top: 12px;
  padding: 14px;
  border: 1px solid color-mix(in srgb, var(--history-accent) 34%, transparent);
  border-radius: 12px;
  background: color-mix(in srgb, var(--history-accent) 7%, rgba(255,255,255,0.025));
}

.history-scene-quiz.show {
  display: grid;
  animation: fadeIn 0.28s ease;
}

.history-quiz-kicker {
  color: var(--history-accent);
  font-size: 0.59rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.history-quiz-question {
  color: var(--text-primary);
  font-size: 0.8rem;
  line-height: 1.45;
}

.history-quiz-options {
  display: grid;
  gap: 6px;
}

.history-quiz-option {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 8px;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.035);
  cursor: pointer;
  font: inherit;
  font-size: 0.7rem;
  text-align: left;
  transition: var(--transition);
}

.history-quiz-option span {
  display: grid;
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  color: var(--history-accent);
  background: color-mix(in srgb, var(--history-accent) 12%, transparent);
  font-size: 0.62rem;
  font-weight: 800;
}

.history-quiz-option:hover:not(:disabled) {
  border-color: var(--history-accent);
  transform: translateX(2px);
}

.history-quiz-option.correct {
  border-color: rgba(0,212,170,0.58);
  color: var(--text-primary);
  background: rgba(0,212,170,0.12);
}

.history-quiz-option.wrong {
  border-color: rgba(255,107,107,0.55);
  background: rgba(255,107,107,0.1);
}

.history-quiz-feedback {
  margin: 0;
  padding: 9px 10px;
  border-radius: 8px;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.035);
  font-size: 0.69rem;
  line-height: 1.5;
}

.history-quiz-feedback.correct strong { color: var(--secondary); }
.history-quiz-feedback.wrong strong { color: var(--accent); }
.history-scene-quiz > .btn { justify-self: start; }

.history-timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 7px;
  max-height: 360px;
  overflow-y: auto;
  margin: 16px 0;
  padding-right: 4px;
}

.history-timeline-node {
  min-height: 58px;
  padding: 8px 10px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  color: var(--text-muted);
  background: rgba(255,255,255,0.025);
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}

.history-timeline-node span,
.history-timeline-node strong { display: block; }
.history-timeline-node span { margin-bottom: 3px; font-size: 0.6rem; }
.history-timeline-node strong { color: var(--text-secondary); font-size: 0.68rem; line-height: 1.3; }
.history-timeline-node:hover { border-color: color-mix(in srgb, var(--history-accent) 45%, transparent); transform: translateY(-2px); }
.history-timeline-node.visited { border-color: rgba(0,212,170,0.24); }
.history-timeline-node.weak { border-color: rgba(255,107,107,0.52); }
.history-timeline-node.weak::after {
  content: 'Tekrar';
  float: right;
  color: var(--accent);
  font-size: 0.55rem;
  font-weight: 800;
}
.history-timeline-node.active {
  border-color: var(--history-accent);
  color: var(--history-accent);
  background: color-mix(in srgb, var(--history-accent) 12%, transparent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--history-accent) 22%, transparent);
}
.history-timeline-node.active strong { color: var(--text-primary); }

.history-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.history-controls .btn,
.history-control-label {
  min-height: 42px;
}

.history-control-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.035);
  font-size: 0.72rem;
}

.history-control-label select {
  border: none;
  color: var(--text-primary);
  background: #1b1d3c;
  cursor: pointer;
}

.history-auto-label { margin-left: auto; cursor: pointer; }

.history-studio-complete {
  display: none;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid rgba(0,212,170,0.28);
  border-radius: 10px;
  color: var(--text-secondary);
  background: rgba(0,212,170,0.08);
  font-size: 0.76rem;
}
.history-studio-complete.show { display: flex; }
.history-studio-complete > span { display: flex; align-items: center; color: var(--secondary); }
.history-studio-complete strong { color: var(--secondary); }

.history-completed-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  color: var(--secondary);
  font-size: 0.62rem;
  font-weight: 700;
}

.history-speech-warning {
  margin: 12px 0 0;
  color: var(--warning);
  font-size: 0.72rem;
}

.history-visual-stage.scene-enter .history-scene-icon {
  animation: historySceneEnter 0.48s cubic-bezier(0.2,0.8,0.2,1);
}

.history-visual-stage.scene-enter .history-real-visual {
  animation: historyVisualEnter 0.62s cubic-bezier(0.2,0.8,0.2,1);
}

.history-controls .btn,
.history-mastery-panel .btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.history-memory-card span,
.history-exam-card span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.history-studio button:focus-visible,
.history-studio select:focus-visible,
.history-studio input:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--history-accent) 70%, white);
  outline-offset: 2px;
}

@keyframes historyAudioBar {
  from { height: 5px; opacity: 0.55; }
  to { height: 24px; opacity: 1; }
}

@keyframes historyOrbit {
  to { transform: rotate(360deg); }
}

@keyframes historySceneEnter {
  from { opacity: 0; transform: scale(0.72) translateY(16px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes historyVisualEnter {
  from { opacity: 0; transform: scale(1.04); }
  to { opacity: 1; transform: scale(1); }
}

@media (max-width: 980px) {
  .history-player-grid { grid-template-columns: 1fr; }
  .history-visual-stage { min-height: 300px; }
  .history-timeline { grid-template-columns: repeat(2, minmax(120px, 1fr)); }
  .history-auto-label { margin-left: 0; }
}

@media (max-width: 600px) {
  .history-studio { padding: 14px; margin-inline: -20px; border-radius: 15px; }
  .history-studio-header { align-items: center; }
  .history-studio-header h3 { font-size: 1rem; }
  .history-player-grid { gap: 10px; }
  .history-visual-stage { min-height: 275px; padding: 22px 12px 18px; }
  .history-story-panel { padding: 14px; }
  .history-mastery-panel { grid-template-columns: repeat(3, 1fr); }
  .history-mastery-panel .btn { grid-column: 1 / -1; }
  .history-caption { font-size: 0.86rem; }
  .history-timeline { grid-template-columns: 1fr 1fr; }
  .history-controls .btn,
  .history-control-label { min-height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  .history-studio *,
  .history-studio *::before,
  .history-studio *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ==================== KRONOLOJİ QUİZİ ==================== */
.krono-tabs-wrapper { margin-top: 10px; }
.krono-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.krono-tab {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.18s;
}
.krono-tab:hover { border-color: var(--primary); color: var(--primary); }
.krono-tab.krono-tab-active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.krono-quiz {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
}
.krono-kicker {
  display: inline-block;
  margin-bottom: 6px;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(108,99,255,0.15);
  color: var(--primary-light);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.krono-quiz h4 {
  margin: 0 0 4px;
  font-size: 1rem;
  font-weight: 700;
}
.krono-instruction {
  margin: 0 0 16px;
  color: var(--text-secondary);
  font-size: 0.82rem;
}
.krono-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 8px;
  margin-bottom: 14px;
}
.krono-item {
  position: relative;
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
  gap: 8px;
}
.krono-item:hover { border-color: var(--primary); background: rgba(108,99,255,0.08); }
.krono-item.krono-selected {
  border-color: var(--primary);
  background: rgba(108,99,255,0.14);
}
.krono-item:active { transform: scale(0.97); }
.krono-rank {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
}
.krono-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.krono-progress {
  flex: 1;
  color: var(--text-secondary);
  font-size: 0.78rem;
}
/* Sonuç */
.krono-score {
  margin-bottom: 14px;
  padding: 10px 14px;
  border-radius: 10px;
  background: rgba(0,212,170,0.1);
  border: 1px solid rgba(0,212,170,0.28);
  font-size: 0.84rem;
  color: var(--text-primary);
}
.krono-score strong { font-size: 1.1rem; color: var(--secondary); }
.krono-result-list { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }
.krono-result-row {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 0.8rem;
}
.krono-result-row.krono-ok  { background: rgba(0,212,170,0.1);  border: 1px solid rgba(0,212,170,0.25); }
.krono-result-row.krono-err { background: rgba(255,99,99,0.1);   border: 1px solid rgba(255,99,99,0.25); }
.krono-result-pos {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 700;
}
.krono-ok  .krono-result-pos { background: rgba(0,212,170,0.25); color: var(--secondary); }
.krono-err .krono-result-pos { background: rgba(255,99,99,0.25);  color: #ff6363; }
.krono-result-year {
  color: var(--text-muted);
  font-size: 0.72rem;
  white-space: nowrap;
}

/* ==================== İLKELER ↔ İNKILAPLAR ==================== */
.ilke-quiz {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-top: 20px;
}
.ilke-kicker {
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--secondary);
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}
.ilke-instruction {
  font-size: 0.83rem;
  color: var(--text-secondary);
  margin: 0 0 10px;
}
.ilke-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin-bottom: 14px;
}
.ilke-legend-item {
  font-size: 0.73rem;
  color: var(--text-secondary);
  padding: 2px 6px;
  background: var(--bg-surface);
  border-radius: 4px;
}
.ilke-rows { display: flex; flex-direction: column; gap: 8px; }
.ilke-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  background: var(--bg-surface);
  border-radius: 8px;
  border: 1px solid var(--border);
  flex-wrap: wrap;
}
.ilke-row-label {
  flex: 1;
  font-size: 0.82rem;
  color: var(--text-primary);
  min-width: 160px;
}
.ilke-row-btns { display: flex; gap: 5px; flex-wrap: wrap; }
.ilke-btn {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  border: 2px solid;
  background: transparent;
  font-size: 0.7rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.ilke-btn:hover { opacity: 0.8; transform: scale(1.06); }
.ilke-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.ilke-progress { font-size: 0.78rem; color: var(--text-muted); margin-right: auto; }
.ilke-score {
  padding: 10px 14px;
  background: var(--bg-surface);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.ilke-score strong { font-size: 1.1rem; color: var(--secondary); }
.ilke-result-rows { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }
.ilke-result-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.81rem;
  flex-wrap: wrap;
}
.ilke-result-row.ilke-ok  { background: rgba(0,212,170,0.1);  border: 1px solid rgba(0,212,170,0.25); }
.ilke-result-row.ilke-err { background: rgba(255,99,99,0.1);   border: 1px solid rgba(255,99,99,0.25); }
.ilke-result-label { flex: 1; color: var(--text-primary); min-width: 160px; }
.ilke-result-answer { display: flex; align-items: center; gap: 6px; }
.ilke-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 5px;
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
}
.ilke-badge-empty { background: var(--text-muted); }
.ilke-result-correct { font-size: 0.76rem; color: var(--secondary); }

/* ==================== STUDIO KPSS SORULARI ==================== */
.studio-qs-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-top: 20px;
}
.studio-qs-kicker {
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--primary-light);
  text-transform: uppercase;
  display: block;
  margin-bottom: 4px;
}
.studio-qs-sub { font-size: 0.8rem; color: var(--text-muted); margin: 0 0 16px; }
.studio-qs-list { display: flex; flex-direction: column; gap: 18px; }
.studio-qs-item { border-bottom: 1px solid var(--border); padding-bottom: 16px; }
.studio-qs-item:last-child { border-bottom: none; padding-bottom: 0; }
.studio-qs-q {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-primary);
  margin: 0 0 10px;
}
.studio-qs-opts { display: flex; flex-direction: column; gap: 5px; }
.studio-qs-opt {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 0.81rem;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  line-height: 1.5;
}
.studio-qs-opt:hover:not([disabled]) { border-color: var(--primary); background: var(--bg-card-hover); }
.studio-qs-opt.studio-qs-correct { background: rgba(0,212,170,0.12); border-color: rgba(0,212,170,0.4); color: var(--secondary); }
.studio-qs-opt.studio-qs-wrong   { background: rgba(255,99,99,0.1);  border-color: rgba(255,99,99,0.35); color: #ff7070; }
.studio-qs-opt.studio-qs-done:not(.studio-qs-correct):not(.studio-qs-wrong) { opacity: 0.45; }
.studio-qs-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  min-width: 20px;
  height: 20px;
  border-radius: 4px;
  background: var(--bg-card);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted);
}
.studio-qs-correct .studio-qs-key { background: rgba(0,212,170,0.25); color: var(--secondary); }
.studio-qs-wrong   .studio-qs-key { background: rgba(255,99,99,0.25);  color: #ff7070; }
.studio-qs-exp {
  margin-top: 8px;
  padding: 8px 12px;
  background: var(--bg-surface);
  border-radius: 7px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.55;
  border-left: 3px solid var(--primary);
}

/* ==================== ANALYTICS ==================== */
.analytics-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin-bottom: 32px; }

.analytics-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  overflow: hidden;
}
.analytics-stat::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
}
.analytics-stat-value { font-size: 2.2rem; font-weight: 800; margin-bottom: 6px; }
.analytics-stat-label { font-size: 0.78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; }
.analytics-stat-change { font-size: 0.75rem; margin-top: 6px; }
.analytics-stat-change.up { color: var(--secondary); }
.analytics-stat-change.down { color: var(--accent); }

.chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px;
  margin-bottom: 24px;
}
.chart-title { font-size: 1rem; font-weight: 600; margin-bottom: 20px; }

canvas { max-width: 100%; }

/* ==================== ANIMATIONS ==================== */
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.fade-in { animation: fadeIn 0.5s ease forwards; }
.slide-up { animation: slideUp 0.6s ease forwards; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

.loading-spinner {
  width: 40px; height: 40px;
  border: 3px solid rgba(108,99,255,0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ==================== TOAST ==================== */
.toast-container {
  position: fixed;
  top: 90px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.875rem;
  box-shadow: var(--shadow-md);
  animation: slideUp 0.3s ease;
  max-width: 320px;
}
.toast.success { border-color: rgba(0,212,170,0.4); }
.toast.error { border-color: rgba(255,107,107,0.4); }
.toast.info { border-color: rgba(108,99,255,0.4); }

/* ==================== MODAL ==================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  z-index: 1500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}
.modal-overlay.show { opacity: 1; pointer-events: all; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: var(--transition);
}
.modal-overlay.show .modal { transform: translateY(0); }
.modal-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 24px; }
.modal-title { font-size: 1.3rem; }
.modal-close { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 1.2rem; padding: 4px; border-radius: 6px; transition: var(--transition); }
.modal-close:hover { color: var(--text-primary); background: rgba(255,255,255,0.06); }

/* ==================== TABS ==================== */
.tabs { display: flex; gap: 4px; background: rgba(255,255,255,0.04); border-radius: var(--radius-full); padding: 4px; margin-bottom: 28px; }
.tab-btn {
  flex: 1;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-full);
  background: none;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-family: 'Space Grotesk', sans-serif;
}
.tab-btn.active { background: var(--primary); color: white; box-shadow: 0 2px 10px rgba(108,99,255,0.4); }
.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.3s ease; }

/* ==================== SEARCH ==================== */
.search-box {
  position: relative;
  margin-bottom: 24px;
}
.search-input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}
.search-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(108,99,255,0.15); }
.search-input::placeholder { color: var(--text-muted); }
.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1rem;
}

/* ==================== MOBILE BOTTOM NAV ==================== */
.mobile-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 8px 0 env(safe-area-inset-bottom, 8px);
}
.mobile-nav-inner {
  display: flex;
  justify-content: space-around;
  align-items: center;
}
.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 8px 12px;
  border: none;
  background: none;
  color: var(--text-muted);
  font-size: 0.65rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  min-width: 52px;
  border-radius: 10px;
  transition: var(--transition);
}
.mobile-nav-item .mnav-icon { font-size: 1.3rem; line-height: 1; }
.mobile-nav-item.active, .mobile-nav-item:hover { color: var(--primary-light); }
.mobile-nav-item.active .mnav-icon { filter: drop-shadow(0 0 6px rgba(108,99,255,0.6)); }

/* ==================== EMPTY STATE ==================== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  text-align: center;
}
.empty-state-icon { font-size: 4rem; margin-bottom: 20px; opacity: 0.7; }
.empty-state-title { font-size: 1.3rem; font-weight: 700; margin-bottom: 8px; }
.empty-state-desc { font-size: 0.88rem; color: var(--text-secondary); max-width: 360px; margin-bottom: 24px; line-height: 1.6; }

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .subjects-grid { grid-template-columns: 1fr; }
  .study-layout { grid-template-columns: 1fr; }
  .study-sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .navbar-nav { display: none; }
  .key-points { grid-template-columns: 1fr; }
  .question-card { padding: 16px; }
  .mobile-nav { display: block; }
  body { padding-bottom: 72px; }
  .mobile-countdown { display: block !important; }
  .hero { padding-bottom: 32px; }
  /* Sınav ekranında seçenekler parmakla kolay seçilsin */
  .option-btn {
    min-height: 52px;
    padding: 12px 16px;
    font-size: 0.88rem;
  }
  .exam-header {
    position: sticky;
    top: 60px;
    z-index: 90;
    flex-wrap: wrap;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }
  .exam-timer { font-size: 1.4rem; }
  .exam-progress-bar-wrap { flex: 1 1 100%; order: 3; }
  /* Navbar daralt */
  .navbar { padding: 0 16px; }
  .navbar-brand .navbar-subtitle { display: none; }
  /* Sınav navigasyon ızgarası kaydırılabilir */
  .question-grid { max-height: 100px; overflow-y: auto; }
  /* Sections */
  .section-inner { padding: 0 16px; }
  .hero { padding: 80px 16px 40px; }
  .hero-title { font-size: clamp(2rem,8vw,3.2rem); }
  /* Footer */
  footer { padding: 28px 16px 20px; }
  /* Hata defteri buttons */
  .card .btn-sm { font-size: 0.7rem; padding: 6px 10px; }
  /* Prevent overflow */
  * { max-width: 100%; box-sizing: border-box; }
  pre, table { overflow-x: auto; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .modules-grid { grid-template-columns: 1fr; }
  .results-breakdown { grid-template-columns: repeat(3,1fr); }
  .breakdown-item { padding: 12px 8px; }
  .breakdown-value { font-size: 1.4rem; }
  .tab-btn { font-size: 0.78rem; padding: 6px 10px; }
}

/* ==================== UTILITY ==================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.w-full { width: 100%; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mt-4 { margin-top: 16px; }
.hidden { display: none !important; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }