/* Light theme styles for the test page */
:root {
  --bg: #f7fbfd;
  --card: #ffffff;
  --muted: #6b7280;
  --accent: #4f46e5;
  --border: #e6eef8;
  --radius: 10px;
}

* {
  box-sizing: border-box
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, 'PingFang SC', "Hiragino Sans GB", "Microsoft Yahei", sans-serif;
  background: var(--bg);
  color: #0f172a;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 980px;
  margin: 36px auto;
  background: var(--card);
  padding: 28px;
  border-radius: var(--radius);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.06);
  border: 1px solid var(--border);
}

h1 {
  margin: 0 0 8px 0;
  font-size: 20px
}

.intro {
  margin: 0 0 18px 0;
  color: var(--muted)
}

.quiz-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 18px
}

.quiz-table thead th {
  background: #fbfdff;
  padding: 10px;
  border-bottom: 1px solid var(--border);
  text-align: center;
  font-weight: 600;
  color: var(--muted)
}

.quiz-table tbody td {
  padding: 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle
}

.quiz-table tbody td:first-child {
  width: 60%;
  text-align: left;
  color: #0b1220
}

.quiz-table input[type="radio"] {
  transform: scale(1.05)
}

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

button {
  background: var(--accent);
  color: white;
  border: 0;
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600
}

button#resetBtn {
  background: #eef2ff;
  color: var(--accent);
  border: 1px solid rgba(79, 70, 229, 0.08)
}

.result {
  margin-top: 20px;
  padding: 14px;
  border-radius: 8px;
  background: #fbfdff;
  border: 1px solid var(--border)
}

.result.hidden {
  display: none
}

.score {
  font-size: 18px;
  margin: 6px 0
}

.label strong {
  color: var(--accent)
}

.footer {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px
}

@media (max-width:640px) {
  .quiz-table thead th {
    font-size: 12px
  }

  .quiz-table tbody td:first-child {
    width: 100%
  }

  .quiz-table tbody td {
    padding: 8px
  }

  .container {
    margin: 18px;
    padding: 16px
  }
}