/* ─── Exam Strategy Page ─────────────────────────────────────────────────── */

:root {
  --green:   #16a34a;
  --red:     #dc2626;
  --amber:   #d97706;
  --violet:  #7c3aed;
  --blue:    #2563eb;
  /* Aliases used in body content */
  --text-2:  var(--ink-2);
  --bg-warm: var(--sand-100);
  --border:  var(--sand-200);
}

/* ── Hero ── */
.hero {
  text-align: center;
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--sand-200);
  margin-bottom: 2rem;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  background: var(--sand-100);
  border: 1px solid var(--sand-200);
  border-radius: 999px;
  padding: 0.2rem 0.75rem;
  margin-bottom: 0.85rem;
}
.hero h1 {
  font-family: 'Newsreader', serif;
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: 0.6rem;
}
.hero-sub {
  font-size: 0.88rem;
  color: var(--ink-3);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ── Universal rule box ── */
.universal {
  background: var(--sand-900);
  color: #fff;
  border-radius: 14px;
  padding: 1.5rem 1.75rem;
  margin-bottom: 2rem;
}
.universal h2 {
  font-family: 'Newsreader', serif;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.u-sub {
  font-size: 0.78rem;
  color: #d6d3d1;
  margin-bottom: 1.25rem;
}
.u-steps {
  display: flex;
  gap: 0;
  overflow-x: auto;
  margin-bottom: 1rem;
  scrollbar-width: none;
}
.u-steps::-webkit-scrollbar { display: none; }
.u-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  min-width: 80px;
  padding: 0.5rem;
  text-align: center;
  position: relative;
}
.u-step:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -8px;
  top: 40%;
  transform: translateY(-50%);
  color: #a8a29e;
  font-size: 0.9rem;
}
.u-step-num {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.u-step-label {
  font-size: 0.72rem;
  color: #e7e5e4;
  font-weight: 600;
  line-height: 1.3;
}
.u-step-hint {
  font-size: 0.62rem;
  color: #a8a29e;
  display: block;
  margin-top: 0.15rem;
}
.u-bottom {
  font-size: 0.82rem;
  color: #d6d3d1;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 0.75rem;
}

/* ── Section divider ── */
.section-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 2rem 0 0.75rem;
}
.section-divider::before, .section-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--sand-200);
}
.section-badge {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.25rem 0.85rem;
  border-radius: 999px;
  white-space: nowrap;
}
.sb-green  { background: #dcfce7; color: #15803d; }
.sb-amber  { background: #fef3c7; color: #92400e; }
.sb-red    { background: #fee2e2; color: #991b1b; }
.sb-blue   { background: #dbeafe; color: #1e40af; }
.sb-violet { background: #ede9fe; color: #6d28d9; }
.sb-dark   { background: var(--sand-200); color: var(--sand-700); }

/* ── Section heading + desc ── */
.section-title {
  font-family: 'Newsreader', serif;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.25rem;
}
.section-desc {
  font-size: 0.82rem;
  color: var(--ink-3);
  margin-bottom: 1rem;
  line-height: 1.55;
}

/* ── Cards ── */
.card {
  background: #fff;
  border: 1.5px solid var(--sand-200);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 1.25rem;
}
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--sand-200);
  gap: 0.75rem;
}
.card-head h4 {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
}
.card-body { padding: 0.85rem 1rem; }
.card-green .card-head { background: #f0fdf4; }
.card-amber .card-head { background: #fffbeb; }
.card-red   .card-head { background: #fef2f2; }
.ch-type {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: var(--sand-100);
  color: var(--ink-3);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Answer block ── */
.answer-block {
  background: var(--sand-50);
  border: 1px solid var(--sand-200);
  border-left: 3px solid var(--sand-300);
  border-radius: 0 8px 8px 0;
  padding: 0.65rem 0.9rem;
  font-size: 0.82rem;
  color: var(--ink-2);
  line-height: 1.5;
  font-family: 'Lato', sans-serif;
  margin-bottom: 0.5rem;
}
.ab-heading {
  font-family: 'Lato', sans-serif;
  font-size: 0.6rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  background: var(--sand-200);
  display: inline-block;
  padding: 0.05rem 0.4rem;
  border-radius: 3px;
  margin-top: 0.55rem;
  margin-bottom: 0.15rem;
}
.answer-block > .ab-heading:first-child { margin-top: 0; }
.ab-formula {
  font-family: monospace;
  font-size: 0.88rem;
  color: #1d4ed8;
  background: #eff6ff;
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
}
.ab-result {
  font-family: monospace;
  font-size: 0.9rem;
  color: #15803d;
  background: #dcfce7;
  border-radius: 4px;
  padding: 0.1rem 0.5rem;
  font-weight: 700;
}
.ab-comment {
  font-family: 'Lato', sans-serif;
  font-size: 0.78rem;
  color: var(--ink-3);
  font-style: italic;
}

/* ── Checklist ── */
.checklist {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.checklist li {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.78rem;
  color: var(--ink-2);
}
.checklist li::before { content: '✓'; color: #16a34a; font-weight: 700; }
.checklist.cl-cross li::before { content: '✗'; color: #dc2626; }

/* ── Callout ── */
.callout {
  display: flex;
  gap: 0.5rem;
  border-radius: 8px;
  padding: 0.55rem 0.8rem;
  font-size: 0.78rem;
  line-height: 1.5;
  margin-top: 0.5rem;
}
.callout-icon { flex-shrink: 0; font-weight: 700; }
.cl-info { background: #eff6ff; color: #1e40af; border: 1px solid #bfdbfe; }
.cl-warn { background: #fffbeb; color: #78350f; border: 1px solid #fde68a; }

/* ── Diagram box ── */
.diagram-box {
  background: var(--sand-50);
  border: 1px solid var(--sand-200);
  border-radius: 8px;
  padding: 0.5rem 0.6rem;
  margin-bottom: 0.5rem;
  overflow-x: auto;
  text-align: center;
}
.diagram-caption {
  font-size: 0.68rem;
  color: var(--ink-3);
  text-align: center;
  margin-top: 0.25rem;
  font-style: italic;
}

/* ── Two column layout ── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}
.col h5 {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.5rem;
}

/* ── Tricks grid ── */
.tricks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}
.trick {
  background: #fff;
  border: 1px solid var(--sand-200);
  border-radius: 10px;
  padding: 1rem 1.1rem;
}
.trick-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.4rem;
}
.trick p {
  font-size: 0.78rem;
  color: var(--ink-3);
  line-height: 1.55;
}
.trick-highlight { color: #1d4ed8; font-weight: 700; }

/* ── Time table ── */
.time-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
  background: #fff;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--sand-200);
  margin-bottom: 1rem;
}
.time-table thead { background: var(--sand-100); }
.time-table th {
  text-align: left;
  padding: 0.65rem 1rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  border-bottom: 1px solid var(--sand-200);
}
.time-table td {
  padding: 0.65rem 1rem;
  color: var(--ink-2);
  border-bottom: 1px solid var(--sand-100);
  vertical-align: middle;
}
.time-table tr:last-child td { border-bottom: none; }
.td-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
}
.tb-green { background: #dcfce7; color: #15803d; }
.tb-amber { background: #fef3c7; color: #92400e; }
.tb-red   { background: #fee2e2; color: #991b1b; }

/* ── Topics grid ── */
.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}
.topic-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  background: #fff;
  border: 1px solid var(--sand-200);
  border-radius: 8px;
  padding: 0.6rem 0.85rem;
  font-size: 0.82rem;
  color: var(--ink-2);
  font-weight: 600;
}
.topic-num {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--sand-900);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

/* ── Col variants ── */
.col-check {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 10px;
  padding: 1rem;
}
.col-cross {
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 10px;
  padding: 1rem;
}
.col-box {
  padding: 0.75rem 1rem;
  background: var(--bg-warm);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.col-box-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
}
.col-box-body {
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--ink-2);
}

/* ── Card instructional note ── */
.card-note {
  font-size: 0.82rem;
  color: var(--ink-3);
  margin-bottom: 0.65rem;
  font-weight: 600;
}

/* ── Mark distribution label ── */
.mark-dist-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink-3);
  margin: 0.85rem 0 0.4rem;
}

/* ── Two-col flush (no top margin) ── */
.two-col-flush { margin-top: 0; margin-bottom: 0; }

/* ── Mark pill: neutral (½ mark steps) ── */
.mr-green-s { background: var(--sand-100); color: var(--ink-3); }

/* ── Mock inner spacing ── */
.mock-content .answer-block { margin: 4px 0; }
.mock-content .diagram-box  { margin: 4px 0; }

/* ── Confidence section bottom note ── */
.c-note {
  color: #e0e7ff;
  font-size: 0.88rem;
  margin-bottom: 0;
}

/* ── Mock answer layout ── */
.mock-answer { display: flex; flex-direction: column; gap: 0; }
.mock-step {
  display: flex;
  gap: 0.6rem;
  padding: 0.5rem 0;
  border-bottom: 1px dashed var(--sand-200);
}
.mock-step:last-child { border-bottom: none; }
.mock-marks { flex-shrink: 0; padding-top: 0.1rem; }
.mark-pill {
  font-size: 0.62rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  white-space: nowrap;
}
.mr-green   { background: #dcfce7; color: #15803d; }
.mr-amber   { background: #fef3c7; color: #92400e; }
.mock-content { flex: 1; }
.mock-label {
  font-size: 0.62rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  margin-bottom: 0.2rem;
}

/* ── Confidence block ── */
.confidence {
  background: linear-gradient(135deg, #312e81, #4c1d95);
  color: #fff;
  border-radius: 14px;
  padding: 2rem 1.75rem;
  margin-top: 2rem;
  text-align: center;
}
.confidence h2 {
  font-family: 'Newsreader', serif;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.confidence p {
  font-size: 0.88rem;
  color: #c7d2fe;
  line-height: 1.6;
  margin-bottom: 1rem;
}
.c-rules {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
  text-align: left;
  max-width: 380px;
  margin-left: auto;
  margin-right: auto;
}
.c-rules li {
  font-size: 0.84rem;
  color: #e0e7ff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.c-rules li::before { content: '→'; color: #818cf8; font-weight: 700; }
.c-bottom {
  font-size: 0.78rem;
  color: #a5b4fc;
  margin-top: 1rem;
  font-style: italic;
}

@media (max-width: 640px) {
  .two-col { grid-template-columns: 1fr; }
  .tricks-grid { grid-template-columns: 1fr 1fr; }
  .topics-grid { grid-template-columns: 1fr; }
}