/* Quiz & leaderboard pages */

body.quiz-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px;
  user-select: none;
}

.quiz-container {
  width: 100%;
  max-width: 960px;
  background: var(--gradient-card);
  border: 1px solid rgba(56, 189, 248, 0.12);
  border-radius: var(--radius-xl);
  padding: 24px 28px 20px;
  margin-top: 0;
  box-shadow: var(--shadow-lg), var(--shadow-inset);
}

#quiz-area {
  padding-bottom: 0;
}

.quiz-container h1 {
  text-align: center;
  margin-bottom: 18px;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-heading);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  gap: 10px;
  flex-wrap: wrap;
}

.timer {
  color: var(--yellow);
  font-weight: 700;
  font-size: 18px;
}

#question-count {
  font-size: 17px;
  color: #e2e8f0;
}

.progress-container {
  width: 100%;
  height: 8px;
  background: rgba(35, 50, 74, 0.6);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 22px;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.3);
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--gradient-brand);
  border-radius: 999px;
  transition: width 0.4s var(--ease-out);
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.4);
}

.question {
  font-size: 22px;
  line-height: 1.5;
  margin-bottom: 20px;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.option {
  background: linear-gradient(165deg, rgba(15, 23, 42, 0.75), rgba(15, 23, 42, 0.5));
  padding: 16px 18px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration) var(--ease-out);
  border: 1px solid rgba(51, 65, 85, 0.7);
  font-size: 16px;
  color: var(--soft);
}

.option:hover {
  background: linear-gradient(165deg, rgba(30, 41, 59, 0.85), rgba(15, 23, 42, 0.65));
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateX(4px);
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.08);
}

.selected {
  border-color: var(--cyan);
  background: linear-gradient(165deg, rgba(8, 47, 73, 0.6), rgba(15, 23, 42, 0.7));
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.2), 0 4px 16px rgba(56, 189, 248, 0.1);
}

.correct {
  background: #15803d !important;
}

.wrong {
  background: #dc2626 !important;
}

.explanation {
  margin-top: 22px;
  padding: 18px 20px;
  background: linear-gradient(135deg, rgba(8, 17, 32, 0.9), rgba(8, 47, 73, 0.25));
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  display: none;
  line-height: 1.7;
  box-shadow: var(--shadow-sm);
}

.quiz-container .btn {
  margin-top: 16px;
  margin-bottom: 0;
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--yellow);
  color: #081120;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: 0.25s;
}

.quiz-container .btn:hover {
  background: #fde047;
}

.result {
  text-align: center;
}

.score {
  font-size: 42px;
  color: var(--green);
  margin: 20px 0;
}

.quiz-container .btn.success {
  background: var(--green);
  color: #fff;
}

.quiz-related {
  margin: 24px 0;
  text-align: left;
}

.quiz-related h3 {
  margin-bottom: 12px;
  font-size: 16px;
  color: var(--text);
}

.quiz-related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.quiz-related-card {
  display: grid;
  gap: 4px;
  padding: 14px;
  border: 1px solid rgba(56, 189, 248, 0.15);
  border-radius: var(--radius-md);
  background: linear-gradient(165deg, rgba(15, 23, 42, 0.75), rgba(15, 23, 42, 0.5));
  text-decoration: none;
  transition: all var(--duration) var(--ease-out);
}

.quiz-related-card:hover {
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateY(-2px);
}

.quiz-related-card b {
  color: var(--cyan);
  font-size: 14px;
}

.quiz-related-card span {
  color: var(--muted);
  font-size: 12px;
}

.review-box {
  margin-top: 30px;
  text-align: left;
}

.review-box h2 {
  margin-top: 30px;
}

.review-item {
  background: rgba(15, 23, 42, 0.6);
  padding: 16px;
  border-radius: 12px;
  margin-bottom: 14px;
}

.review-correct {
  color: var(--green);
}

.review-wrong {
  color: #ef4444;
}

.high-score {
  margin-top: 12px;
  color: var(--yellow);
}

.home-btn {
  text-decoration: none;
  background: var(--cyan);
  color: #081120;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  transition: 0.25s;
}

.home-btn:hover {
  background: var(--cyan-dark);
}

.quiz-controls {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

#questionLimit {
  background: rgba(15, 23, 42, 0.6);
  color: var(--text);
  border: 1px solid #334155;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.hidden {
  display: none;
}

.control-btn,
.toggle-btn {
  background: var(--cyan);
  color: #081120;
  border: none;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  cursor: pointer;
  transition: 0.25s;
}

.control-btn:hover,
.toggle-btn:hover {
  background: var(--cyan-dark);
}

.finish-btn {
  background: var(--yellow);
}

.finish-btn:hover {
  background: #fde047;
}

/* Leaderboard */
.leaderboard-page .container {
  padding-block: 30px;
}

.leaderboard-page h1 {
  text-align: center;
  margin-bottom: 32px;
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-heading);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(56, 189, 248, 0.12);
  box-shadow: var(--shadow-md);
}

.leaderboard-table th,
.leaderboard-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid rgba(35, 50, 74, 0.6);
}

.leaderboard-table th {
  color: var(--cyan);
  font-weight: 700;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.7));
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.leaderboard-table tr:hover td {
  background: rgba(56, 189, 248, 0.06);
}

.leaderboard-table .rank {
  font-weight: 700;
  color: var(--cyan);
}

.cert-badge {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 7px;
  border-radius: 999px;
  border: 1px solid rgba(250, 204, 21, 0.35);
  background: rgba(250, 204, 21, 0.12);
  color: #fde047;
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  vertical-align: middle;
}

.leaderboard-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: 24px 0 8px;
}

.leaderboard-cta a {
  padding: 10px 16px;
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.6);
  color: var(--cyan);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
}

.leaderboard-cta a:hover {
  border-color: rgba(56, 189, 248, 0.35);
  transform: translateY(-1px);
}

.leaderboard-meta {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 16px;
}

@media (max-width: 700px) {
  body.quiz-page {
    padding: 14px;
  }

  .quiz-container {
    padding: 14px 16px;
    border-radius: 16px;
  }

  .quiz-container h1 {
    font-size: 26px;
  }

  .question {
    font-size: 20px;
  }

  .option {
    padding: 14px;
    font-size: 14px;
  }

  .top-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .quiz-controls {
    flex-direction: column;
    align-items: stretch;
  }

  #questionLimit,
  .control-btn,
  .toggle-btn {
    width: 100%;
  }
}