/* ============================================================
   chem-y12-m5-theme.css — Chemistry Year 12 Module 5
   Palette: Sky blue / indigo / cyan (Phase F)
   ============================================================ */
:root {
  --primary:       #38bdf8;
  --primary-mid:   #0ea5e9;
  --primary-light: rgba(56, 189, 248, 0.12);
  --accent:        #818cf8;
  --accent-dark:   #6366f1;
  --accent-light:  rgba(129, 140, 248, 0.12);
  --accent-bg:     rgba(255, 255, 255, 0.88);
  --surface:       rgba(255, 255, 255, 0.96);
  --surface-solid: #ffffff;
  --mesh-1: #e0f2fe;
  --mesh-2: #e0e7ff;
  --mesh-3: #f0f9ff;
  --mesh-gradient: radial-gradient(ellipse at 20% 20%, var(--mesh-1) 0%, transparent 55%),
                   radial-gradient(ellipse at 80% 80%, var(--mesh-2) 0%, transparent 55%),
                   radial-gradient(ellipse at 50% 50%, var(--mesh-3) 0%, transparent 70%),
                   #f8fafc;
  --h2-color:      var(--heading-color);
  --shadow-accent: 0 4px 20px var(--accent-light);
}

body {
  background: radial-gradient(ellipse at 10% 20%, rgba(186,230,255,0.9) 0%, transparent 55%),
              radial-gradient(ellipse at 85% 10%, rgba(186,210,255,0.85) 0%, transparent 50%),
              radial-gradient(ellipse at 60% 80%, rgba(186,230,255,0.8) 0%, transparent 50%),
              linear-gradient(155deg, #e0f2fe 0%, #dbeafe 40%, #e0e7ff 75%, #f0f9ff 100%);
  min-height: 100vh;
}

.hero {
  background: linear-gradient(135deg, #312e81 0%, #0891b2 100%);
}
.hero h1 { color: #ffffff; }

.hero--assessment {
  color: #fff;
  padding: 3rem 2rem 2.5rem;
  text-align: center;
}

.hero--assessment h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.hero--assessment p {
  font-size: 1rem;
  opacity: 0.9;
  max-width: 640px;
  margin: 0.5rem auto 0;
}

.hero--assessment-quiz {
  padding: 3.5rem 2rem 3rem;
}

.hero--assessment-quiz h1 {
  font-size: 2.2rem;
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 1rem;
}

.hero-pill {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 20px;
  padding: 0.3rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 600;
}

.cp-container,
.quiz-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.cp-container {
  max-width: 860px;
}

.card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card h2 {
  font-size: 1.15rem;
  color: var(--primary);
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #e0e7ff;
}

.card h2 .section-badge {
  background: var(--primary);
  color: #fff;
  border-radius: 6px;
  padding: 0.2rem 0.7rem;
  font-size: 0.75rem;
  font-weight: 700;
}

.coverage-grid,
.syllabus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.syllabus-grid {
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.coverage-tile,
.syl-card {
  background: #f8fafc;
  border-radius: 10px;
  padding: 1rem;
  border-left: 4px solid var(--primary);
}

.coverage-tile {
  border-left-width: 0;
  border-top: 3px solid var(--primary);
  border-radius: 8px;
  padding: 0.85rem 1rem;
}

.ct-num,
.syl-iq {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin-bottom: 0.4rem;
}

.ct-title,
.syl-title {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.ct-points,
.syl-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.78rem;
  color: #64748b;
}

.ct-points li {
  padding: 0.2rem 0;
  border-bottom: 1px solid #f1f5f9;
}

.ct-points li:last-child {
  border-bottom: none;
}

.syl-list li {
  padding: 0.15rem 0;
}

.syl-list li::before {
  content: "\2713 ";
  color: #16a34a;
  font-weight: 700;
}

.iq-label,
.q-num {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.iq-label {
  display: inline-block;
  background: #eff6ff;
  border: 1.5px solid #bfdbfe;
  border-radius: 6px;
  padding: 0.2rem 0.7rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.q-num {
  color: var(--primary);
  margin-bottom: 0.3rem;
}

.mc-question {
  margin-bottom: 1.75rem;
}

.mc-question p {
  font-weight: 500;
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
}

.mc-option {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  margin-bottom: 0.3rem;
  border: 1.5px solid #e2e8f0;
  transition: background 0.15s;
  font-size: 0.9rem;
}

.mc-option:hover {
  background: #f1f5f9;
}

.mc-letter {
  font-weight: 700;
  min-width: 1.2rem;
  color: var(--accent);
}

.mc-feedback {
  display: none;
  margin-top: 0.5rem;
  padding: 0.5rem 0.85rem;
  border-radius: 6px;
  font-size: 0.88rem;
}

.sa-marks {
  font-size: 0.8rem;
  color: #94a3b8;
  font-style: italic;
  margin: 0.2rem 0 0.6rem;
}

.sa-answer {
  display: none;
  background: #f0fdf4;
  border: 1.5px solid #86efac;
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  line-height: 1.7;
}

.ans-toggle {
  background: none;
  border: 1.5px solid var(--primary);
  color: var(--primary);
  border-radius: 8px;
  padding: 0.5rem 1.25rem;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 0.5rem;
}

.ans-toggle:hover {
  background: #e0e7ff;
}

.score-tracker {
  background: #f8fafc;
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  border: 1.5px solid #e2e8f0;
}

.score-tracker h3 {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.score-section {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  padding: 0.5rem 0 0.2rem;
}

.score-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.45rem 0;
  border-bottom: 1px solid #f1f5f9;
  font-size: 0.88rem;
  color: #475569;
}

.score-row:last-child {
  border-bottom: none;
  font-weight: 700;
  color: #1e293b;
}

.score-input {
  width: 55px;
  border: 1.5px solid #cbd5e1;
  border-radius: 6px;
  padding: 0.3rem 0.5rem;
  font-size: 0.9rem;
  text-align: center;
  font-family: "DM Mono", monospace;
}

.completion-block {
  text-align: center;
  margin-top: 2rem;
  padding: 1.5rem;
  background: linear-gradient(135deg, #ecfeff, #eff6ff);
  border-radius: 14px;
  border: 2px solid #93c5fd;
}

.completion-block h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.completion-block p {
  color: #334155;
  margin-bottom: 1rem;
}

.completion-block button {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

.ice-table {
  font-family: "DM Mono", monospace;
  font-size: 0.82rem;
  border-collapse: collapse;
  width: 100%;
  margin: 0.5rem 0;
}

.ice-table th,
.ice-table td {
  border: 1px solid #e2e8f0;
  padding: 0.4rem 0.6rem;
  text-align: center;
}

.ice-table th {
  background: #f1f5f9;
  font-weight: 700;
}

.ice-table .row-label {
  text-align: left;
  font-weight: 700;
  color: var(--primary);
}

.callout-red {
  background: #fef2f2;
  border-left: 4px solid #dc2626;
  border-radius: 0 8px 8px 0;
  padding: 0.75rem 1rem;
  margin: 0.5rem 0;
  font-size: 0.88rem;
  color: #7f1d1d;
}