/* ═══════════════════════════════════════════════════════════════════
   Prelims Simulator — paper page
═══════════════════════════════════════════════════════════════════ */

.sim-paper-shell { background: var(--color-bg-alt); min-height: 100vh; }

/* ── Dark mode ──────────────────────────────────────────────
   Toggled by a body class `sim-dark` during paper state.
   Only affects simulator surfaces — rest of the site untouched. */
body.sim-dark .sim-paper-shell { background: #0f172a; color: #e2e8f0; }
body.sim-dark .sim-main,
body.sim-dark .sim-palette {
  background: #1e293b;
  border-color: #334155;
  color: #e2e8f0;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
body.sim-dark .sim-topbar { background: #020617; box-shadow: 0 2px 8px rgba(0,0,0,0.5); }
body.sim-dark .sim-palette__head { color: #94a3b8; }
body.sim-dark .sim-palette__btn { background: #334155; border-color: #475569; color: #cbd5e1; }
body.sim-dark .sim-palette__btn[data-state="visited"] { background: #422006; border-color: #78350f; color: #fbbf24; }
body.sim-dark .sim-palette__btn[data-state="answered"] { background: #14532d; border-color: #15803d; color: #86efac; }
body.sim-dark .sim-palette__btn[data-state="review"] { background: #7c2d12; border-color: #c2410c; color: #fdba74; }
body.sim-dark .sim-palette__btn[data-state="answered-review"] { background: #14532d; border-color: #ca8a04; color: #86efac; box-shadow: inset 0 0 0 2px #ca8a04; }
body.sim-dark .sim-palette__btn[data-current="true"] { outline-color: #f1f5f9; }
body.sim-dark .sim-palette__legend { color: #94a3b8; }
body.sim-dark .sim-palette__legend i[data-p="answered"] { background: #14532d; border-color: #15803d; }
body.sim-dark .sim-palette__legend i[data-p="review"] { background: #7c2d12; border-color: #c2410c; }
body.sim-dark .sim-palette__legend i[data-p="visited"] { background: #422006; border-color: #78350f; }
body.sim-dark .sim-palette__legend i[data-p="unvisited"] { background: #334155; border-color: #475569; }
body.sim-dark .sim-q__label { color: #94a3b8; }
body.sim-dark .sim-q__subject { background: rgba(212,160,23,0.2); color: #fde68a; }
body.sim-dark .sim-q__stem { color: #f1f5f9; }
body.sim-dark .sim-q__opt {
  background: #0f172a;
  border-color: #334155;
  color: #e2e8f0;
}
body.sim-dark .sim-q__opt:hover { border-color: #64748b; background: #1e293b; }
body.sim-dark .sim-q__opt--selected { background: rgba(212,160,23,0.14); border-color: #d4a017; }
body.sim-dark .sim-q__opt--selected .sim-q__opt-letter { background: #d4a017; color: #0a1f18; }
body.sim-dark .sim-q__opt-letter { background: #334155; color: #cbd5e1; }
body.sim-dark .sim-q__opt-strike { color: #64748b; }
body.sim-dark .sim-q__opt-strike:hover { color: #ef4444; }
body.sim-dark .sim-q__nav { border-color: #334155; }
body.sim-dark .sim-q__nav .btn--ghost { color: #cbd5e1; border-color: #475569; }
body.sim-dark .sim-q__nav .btn--ghost:hover { background: #334155; }

.sim-darktoggle {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.7);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: background 0.12s;
}
.sim-darktoggle:hover { background: rgba(255,255,255,0.1); color: #fff; }

/* ── State: Setup ───────────────────────────────────────────── */
.sim-setup-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  max-width: 680px;
  margin: var(--space-6) auto;
  box-shadow: 0 1px 3px rgba(15,23,42,0.06);
}
.sim-kicker {
  display: inline-block;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #d4a017;
  border: 1px solid rgba(212,160,23,0.35);
  background: rgba(212,160,23,0.1);
  border-radius: 100px;
  padding: 3px 10px;
  margin-bottom: var(--space-3);
}
.sim-setup__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 var(--space-3);
  color: var(--color-text);
}
.sim-setup__sub { font-size: var(--text-sm); color: var(--color-text-muted); margin: 0 0 var(--space-5); line-height: 1.6; }
.sim-setup__prev {
  background: linear-gradient(135deg, rgba(212,160,23,0.12) 0%, rgba(212,160,23,0.05) 100%);
  border: 1px solid rgba(212,160,23,0.3);
  border-radius: 10px;
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-4);
}
.sim-setup__prev > strong {
  display: block;
  font-size: var(--text-sm);
  color: #b45309;
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.7rem;
}
.sim-setup__prev-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  font-size: var(--text-sm);
  border-bottom: 1px dashed rgba(212,160,23,0.2);
}
.sim-setup__prev-row:last-child { border-bottom: none; }
.sim-setup__prev-row strong { font-weight: 700; color: var(--color-text); }
.sim-setup__prev-chart {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px dashed rgba(212,160,23,0.25);
}
.sim-setup__prev-chart svg { display: block; }
.sim-setup__prev-chart-axis {
  display: flex;
  justify-content: space-between;
  font-size: 0.65rem;
  color: var(--color-text-muted);
  font-weight: 600;
  margin-top: 4px;
  padding: 0 4px;
}

.sim-setup__rules { background: var(--color-bg-alt); border-radius: 10px; padding: var(--space-4) var(--space-5); margin-bottom: var(--space-5); }
.sim-setup__rules h3 { font-size: var(--text-sm); font-weight: var(--font-bold); margin: 0 0 var(--space-2); }
.sim-setup__rules ul { margin: 0; padding-left: var(--space-5); font-size: var(--text-sm); color: var(--color-text); line-height: 1.8; }
.sim-setup__rules kbd {
  display: inline-block;
  padding: 1px 6px;
  font: 600 0.72rem "Courier New", monospace;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-bottom-width: 2px;
  border-radius: 4px;
  color: #334155;
  min-width: 18px;
  text-align: center;
}
.sim-setup__actions { display: flex; gap: var(--space-3); flex-wrap: wrap; }

/* ── State: Paper (in progress) ─────────────────────────────── */
.sim-topbar {
  background: #0a1f18;
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.sim-topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  flex-wrap: wrap;
}
.sim-topbar__left { display: flex; flex-direction: column; line-height: 1.2; }
.sim-topbar__kicker { font-size: 0.62rem; color: rgba(255,255,255,0.5); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 700; }
.sim-topbar__qnum { font-size: var(--text-sm); color: #fff; font-weight: 600; margin-top: 2px; }
.sim-topbar__right { display: flex; align-items: center; gap: var(--space-3); }

.sim-timer {
  font-family: "Courier New", monospace;
  font-size: 1.25rem;
  font-weight: 700;
  color: #d4a017;
  background: rgba(212,160,23,0.12);
  border: 1px solid rgba(212,160,23,0.3);
  padding: 6px 14px;
  border-radius: 6px;
  min-width: 100px;
  text-align: center;
}
.sim-timer--warn { color: #fb923c; background: rgba(251,146,60,0.14); border-color: rgba(251,146,60,0.4); }
.sim-timer--danger {
  color: #ef4444;
  background: rgba(239,68,68,0.16);
  border-color: rgba(239,68,68,0.5);
  animation: sim-pulse 1s ease-in-out infinite;
}
@keyframes sim-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.6; } }

/* ── Layout ─────────────────────────────────────────────────── */
.sim-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-6);
  padding: var(--space-5) 0 var(--space-10);
  align-items: flex-start;
}
@media (max-width: 900px) {
  .sim-layout { grid-template-columns: 1fr; }
  .sim-palette { position: static !important; max-height: 280px; overflow-y: auto; }
}

/* ── Palette ────────────────────────────────────────────────── */
.sim-palette {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  position: sticky;
  top: 84px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  box-shadow: 0 1px 3px rgba(15,23,42,0.04);
}
.sim-palette__head {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}
.sim-palette__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  margin-bottom: var(--space-4);
}
.sim-palette__btn {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  color: #475569;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 7px 0;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.12s;
}
.sim-palette__btn:hover { transform: scale(1.06); }
.sim-palette__btn[data-state="visited"] { background: #fef3c7; border-color: #fde68a; color: #92400e; }
.sim-palette__btn[data-state="answered"] { background: #dcfce7; border-color: #86efac; color: #15803d; }
.sim-palette__btn[data-state="review"] { background: #fed7aa; border-color: #fb923c; color: #c2410c; }
.sim-palette__btn[data-state="answered-review"] { background: #bbf7d0; border-color: #f59e0b; color: #15803d; box-shadow: inset 0 0 0 2px #f59e0b; }
.sim-palette__btn[data-current="true"] { outline: 2px solid #0a1f18; outline-offset: 1px; }

.sim-palette__legend {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  font-size: 0.7rem;
  color: var(--color-text-muted);
}
.sim-palette__legend span { display: flex; align-items: center; gap: 6px; }
.sim-palette__legend i {
  width: 12px; height: 12px; border-radius: 3px; display: inline-block;
}
.sim-palette__legend i[data-p="answered"] { background: #dcfce7; border: 1px solid #86efac; }
.sim-palette__legend i[data-p="review"] { background: #fed7aa; border: 1px solid #fb923c; }
.sim-palette__legend i[data-p="visited"] { background: #fef3c7; border: 1px solid #fde68a; }
.sim-palette__legend i[data-p="unvisited"] { background: #f1f5f9; border: 1px solid #e2e8f0; }

/* ── Main question area ─────────────────────────────────────── */
.sim-main {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-6) var(--space-5);
  box-shadow: 0 1px 3px rgba(15,23,42,0.04);
  min-height: 500px;
}
.sim-q__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
  gap: var(--space-3);
  flex-wrap: wrap;
}
.sim-q__label {
  font-size: 0.65rem;
  font-weight: 800;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.sim-q__subject {
  font-size: 0.65rem;
  padding: 2px 9px;
  border-radius: 100px;
  background: rgba(79,70,229,0.1);
  color: #4f46e5;
  font-weight: 700;
}
.sim-q__stem {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  margin: 0 0 var(--space-3);
  white-space: pre-line; /* preserve \n in stems that pre-date the structured schema */
}
.sim-q__statements {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  margin: 0 0 var(--space-3);
  padding-left: var(--space-6);
}
.sim-q__statements li {
  margin-bottom: var(--space-2);
  padding-left: 4px;
}
.sim-q__statements li::marker {
  font-weight: 700;
  color: var(--color-brand);
}
.sim-q__tail {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  margin: 0 0 var(--space-5);
  font-weight: 500;
}
.sim-q__assertion-block {
  margin: 0 0 var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-alt);
  border-left: 3px solid var(--color-brand);
  border-radius: 6px;
}
.sim-q__ar-label {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-brand);
  margin-bottom: 4px;
}
.sim-q__ar-body {
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
}
body.sim-dark .sim-q__statements li::marker { color: #d4a017; }
body.sim-dark .sim-q__statements, body.sim-dark .sim-q__tail { color: #f1f5f9; }
body.sim-dark .sim-q__assertion-block { background: #0f172a; border-left-color: #d4a017; }
body.sim-dark .sim-q__ar-label { color: #d4a017; }
body.sim-dark .sim-q__ar-body { color: #f1f5f9; }

/* Results review — full body block */
.sim-res__review-body {
  margin: var(--space-3) 0;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-alt);
  border-radius: 6px;
}
.sim-res__review-body .sim-q__stem,
.sim-res__review-body .sim-q__tail { font-size: var(--text-sm); margin-bottom: var(--space-2); }
.sim-res__review-body .sim-q__statements { font-size: var(--text-sm); margin-bottom: var(--space-2); }
.sim-res__review-body .sim-q__assertion-block { margin-bottom: var(--space-2); }
.sim-res__review-body .sim-q__assertion-block:last-child { margin-bottom: 0; }
.sim-q__options { display: flex; flex-direction: column; gap: var(--space-2); margin-bottom: var(--space-5); }
.sim-q__opt {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  background: #f8fafc;
  border: 1.5px solid #e2e8f0;
  border-radius: 10px;
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-text);
}
.sim-q__opt:hover { border-color: #94a3b8; background: #f1f5f9; }
.sim-q__opt--selected { background: rgba(15,76,58,0.06); border-color: #0f4c3a; }
.sim-q__opt--selected .sim-q__opt-letter { background: #0f4c3a; color: #fff; }
.sim-q__opt-letter {
  flex-shrink: 0;
  width: 26px; height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #e2e8f0;
  color: #475569;
  font-weight: 700;
  font-size: var(--text-xs);
  transition: all 0.15s;
}
.sim-q__opt--struck { opacity: 0.45; text-decoration: line-through; }
.sim-q__opt-strike {
  background: none;
  border: none;
  color: #94a3b8;
  font-size: 1rem;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
  margin-left: auto;
}
.sim-q__opt-strike:hover { color: #ef4444; }

.sim-q__nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}
.sim-q__nav-group { display: flex; gap: var(--space-2); flex-wrap: wrap; }

/* ── Results ────────────────────────────────────────────────── */
.sim-results {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-4) 0 var(--space-8);
  box-shadow: 0 1px 3px rgba(15,23,42,0.04);
}
.sim-res__top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
@media (max-width: 720px) { .sim-res__top { grid-template-columns: 1fr; } }

.sim-res__score {
  background: linear-gradient(135deg, #0a1f18 0%, #0f2e24 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-align: center;
}
.sim-res__score-num { font-family: var(--font-serif); font-size: clamp(2.5rem, 6vw, 3.5rem); font-weight: 800; color: #d4a017; line-height: 1; margin: var(--space-2) 0; }
.sim-res__score-max { font-size: var(--text-base); color: rgba(255,255,255,0.5); font-weight: 400; }
.sim-res__score-label { font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.6); font-weight: 700; }
.sim-res__cutoff { font-size: var(--text-sm); color: rgba(255,255,255,0.75); margin-top: var(--space-3); }
.sim-res__cutoff strong { color: #d4a017; }

.sim-res__breakdown {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.sim-res__breakdown h3 { font-size: var(--text-sm); font-weight: 700; margin: 0 0 var(--space-3); }
.sim-res__stat { display: flex; justify-content: space-between; font-size: var(--text-sm); padding: 6px 0; border-bottom: 1px solid rgba(0,0,0,0.06); }
.sim-res__stat:last-child { border-bottom: none; }
.sim-res__stat strong { font-weight: 700; }
.sim-res__stat .correct { color: #15803d; }
.sim-res__stat .wrong { color: #dc2626; }
.sim-res__stat .skip { color: #94a3b8; }

.sim-res__topics {
  margin-bottom: var(--space-6);
}
.sim-res__topics h3 {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  margin: 0 0 var(--space-4);
}
.sim-res__topic-row {
  display: grid;
  grid-template-columns: 160px 1fr 90px;
  gap: var(--space-3);
  align-items: center;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
}
.sim-res__topic-name { font-weight: 600; color: var(--color-text); text-transform: capitalize; }
.sim-res__topic-bar { background: #e2e8f0; border-radius: 100px; height: 8px; overflow: hidden; }
.sim-res__topic-fill { height: 100%; background: linear-gradient(90deg, #15803d, #22c55e); border-radius: 100px; transition: width 0.6s; }
.sim-res__topic-fill--weak { background: linear-gradient(90deg, #dc2626, #f97316); }
.sim-res__topic-fill--mid { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.sim-res__topic-score { font-weight: 700; color: var(--color-text); text-align: right; font-variant-numeric: tabular-nums; }

.sim-res__review {
  margin-top: var(--space-6);
}
.sim-res__review h3 {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  margin: 0 0 var(--space-3);
}
.sim-res__review-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.sim-res__review-item {
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: var(--space-4);
  background: #fff;
}
.sim-res__review-item--wrong { border-left: 4px solid #dc2626; }
.sim-res__review-item--correct { border-left: 4px solid #15803d; }
.sim-res__review-item--skip { border-left: 4px solid #94a3b8; background: #fafafa; }
.sim-res__review-item summary {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  list-style: none;
  align-items: flex-start;
}
.sim-res__review-item summary::-webkit-details-marker { display: none; }
.sim-res__review-item[open] summary { margin-bottom: var(--space-3); }
.sim-res__review-q { flex: 1; line-height: 1.5; }
.sim-res__review-tag {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 100px;
  white-space: nowrap;
}
.sim-res__review-tag--wrong { background: rgba(220,38,38,0.1); color: #b91c1c; }
.sim-res__review-tag--correct { background: rgba(21,128,61,0.1); color: #15803d; }
.sim-res__review-tag--skip { background: rgba(148,163,184,0.15); color: #64748b; }
.sim-res__review-opt {
  font-size: var(--text-sm);
  padding: 6px 10px;
  margin-bottom: 4px;
  border-radius: 6px;
  color: var(--color-text-muted);
}
.sim-res__review-opt--your { background: rgba(220,38,38,0.08); color: #991b1b; }
.sim-res__review-opt--correct-ans { background: rgba(21,128,61,0.08); color: #15803d; font-weight: 600; }

.sim-res__review-foot {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px dashed var(--color-border);
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  align-items: center;
}
.sim-res__review-foot strong { color: var(--color-text); font-weight: 600; }
.sim-res__revise-link {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-brand);
  text-decoration: none;
  padding: 4px 10px;
  background: rgba(15,76,58,0.08);
  border-radius: 100px;
  white-space: nowrap;
  transition: background 0.12s;
}
.sim-res__revise-link:hover { background: rgba(15,76,58,0.16); }

.sim-res__time-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.sim-res__time-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 12px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: var(--text-sm);
  text-transform: capitalize;
}
.sim-res__time-row strong { font-variant-numeric: tabular-nums; color: #d4a017; }

.sim-res__explanation {
  margin-top: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: rgba(212,160,23,0.08);
  border-left: 3px solid #d4a017;
  border-radius: 6px;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-text);
}
.sim-res__explanation strong { color: #b45309; }
.sim-res__explanation-loading { color: var(--color-text-muted); font-style: italic; font-size: var(--text-xs); }