/* ═══════════════════════════════════════════════════════════════════════════
   simulator-hub.css — Hub, config, results, review pages
   Inherits the main site's CSS variables from main.css
   ═══════════════════════════════════════════════════════════════════════════ */

:root {
  --sim-green:   #34c759;
  --sim-amber:   #ff9500;
  --sim-red:     #ff3b30;
  --sim-yellow:  #ffcc00;
  --sim-primary: var(--color-primary, #5c6bc0);
}

/* ── Hub wrapper ──────────────────────────────────────────────────────────── */
.sim-hub-wrapper {
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 24px 60px;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

/* ── Hero ─────────────────────────────────────────────────────────────────── */
.sim-hero {
  text-align: center;
  padding: 24px 0 8px;
}

.sim-hero-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-primary);
  background: rgba(92,107,192,0.08);
  border: 1px solid rgba(92,107,192,0.2);
  border-radius: 20px;
  padding: 4px 14px;
  margin-bottom: 16px;
}

.sim-hero-title {
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 800;
  color: var(--color-text-dark);
  margin-bottom: 14px;
  letter-spacing: -0.5px;
  line-height: 1.15;
}

.sim-hero-sub {
  font-size: 16px;
  color: var(--color-text-medium);
  max-width: 560px;
  margin: 0 auto 20px;
  line-height: 1.6;
}

.sim-hero-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.sim-pill {
  font-size: 12px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--color-border);
  color: var(--color-text-medium);
  background: var(--color-card-background);
}

/* ── Exam cards ───────────────────────────────────────────────────────────── */
.sim-exams {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
}

.sim-exam-card {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: box-shadow 0.2s;
}

.sim-exam-card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.sim-exam-esat { border-top: 3px solid #5c6bc0; }
.sim-exam-tmua { border-top: 3px solid #e91e63; }

.sim-exam-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.sim-exam-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-medium);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sim-exam-name {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-text-dark);
  letter-spacing: -1px;
  line-height: 1;
  margin-top: 4px;
}

.sim-exam-full {
  font-size: 13px;
  color: var(--color-text-medium);
  margin-top: 4px;
}

.sim-exam-logo {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.sim-exam-tmua .sim-exam-logo {
  background: linear-gradient(135deg, #e91e63 0%, #9c27b0 100%);
}

.sim-exam-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sim-meta-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
}

.sim-meta-label {
  color: var(--color-text-medium);
  flex-shrink: 0;
}

.sim-meta-value {
  color: var(--color-text-dark);
  font-weight: 500;
  text-align: right;
}

/* Subject availability chips */
.sim-subject-availability {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sim-subject-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--color-border);
}

.sim-subject-chip.available {
  background: rgba(52,199,89,0.06);
  border-color: rgba(52,199,89,0.3);
}

.sim-subject-chip.coming-soon {
  background: var(--color-card-background);
  opacity: 0.6;
}

.sim-subject-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.sim-subject-chip.available .sim-subject-dot { background: var(--sim-green); }
.sim-subject-chip.coming-soon .sim-subject-dot { background: var(--color-border); }

.sim-subject-chip.premium-gated {
  background: rgba(92,107,192,0.05);
  border-color: rgba(92,107,192,0.25);
}
.sim-subject-chip.premium-gated .sim-subject-dot { background: var(--color-primary); opacity: 0.6; }

/* Premium lock styles — option cards and mode cards */
.sim-option-locked,
.sim-mode-locked {
  position: relative;
  border: 2px solid rgba(92,107,192,0.3);
  border-radius: 10px;
  padding: 14px 14px 14px 14px;
  background: rgba(92,107,192,0.03);
  cursor: default;
}

.sim-mode-locked {
  padding: 16px;
}

.sim-lock-icon {
  position: absolute;
  top: 10px;
  right: 12px;
  color: var(--color-primary);
  opacity: 0.6;
  font-size: 13px;
}

.sim-premium-badge {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 4px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  vertical-align: middle;
  margin-left: 6px;
}

/* Free-tier notice on config page */
.sim-free-notice {
  font-size: 13px;
  color: var(--color-text-medium);
  background: rgba(92,107,192,0.06);
  border: 1px solid rgba(92,107,192,0.2);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sim-free-notice i { color: var(--color-primary); flex-shrink: 0; }

.sim-upgrade-link {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
}
.sim-upgrade-link:hover { text-decoration: underline; }

.sim-subject-count {
  margin-left: auto;
  font-size: 11px;
  color: var(--color-text-medium);
  font-weight: 500;
}

/* ── CTA Buttons ──────────────────────────────────────────────────────────── */
.sim-start-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  font-family: inherit;
  justify-content: center;
}

.sim-start-btn:hover { background: var(--color-primary-hover); text-decoration: none; color: #fff; }
.sim-start-btn:active { transform: scale(0.98); }

.sim-start-btn-tmua {
  background: #e91e63;
}
.sim-start-btn-tmua:hover { background: #c2185b; }

.sim-btn-secondary {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}
.sim-btn-secondary:hover { background: rgba(92,107,192,0.08); color: var(--color-primary); }

.sim-start-large {
  font-size: 16px;
  padding: 14px 32px;
}

/* ── Features ─────────────────────────────────────────────────────────────── */
.sim-features {
  text-align: center;
}

.sim-features-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text-dark);
  margin-bottom: 28px;
}

.sim-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  text-align: left;
}

.sim-feature {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 20px;
}

.sim-feature-icon {
  font-size: 24px;
  margin-bottom: 10px;
}

.sim-feature h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-dark);
  margin-bottom: 6px;
}

.sim-feature p {
  font-size: 13px;
  color: var(--color-text-medium);
  line-height: 1.55;
}

/* ── Disclaimer ───────────────────────────────────────────────────────────── */
.sim-disclaimer {
  padding: 16px 20px;
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  font-size: 12px;
  color: var(--color-text-medium);
  line-height: 1.6;
  text-align: center;
}

/* ── Config page ──────────────────────────────────────────────────────────── */
.sim-config-wrapper {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px 60px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.sim-config-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sim-back-link {
  font-size: 13px;
  color: var(--color-primary);
  text-decoration: none;
}

.sim-back-link:hover { text-decoration: underline; }

.sim-config-title {
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 800;
  color: var(--color-text-dark);
  letter-spacing: -0.3px;
}

.sim-config-sub {
  font-size: 14px;
  color: var(--color-text-medium);
}

.sim-login-prompt {
  text-align: center;
  padding: 48px 24px;
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.sim-login-icon { font-size: 40px; }

.sim-login-prompt h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-dark);
}

.sim-login-prompt p {
  font-size: 14px;
  color: var(--color-text-medium);
}

.sim-config-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sim-config-section {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sim-config-section-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-dark);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sim-config-section-desc {
  font-size: 13px;
  color: var(--color-text-medium);
  line-height: 1.5;
}

.sim-required-badge {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: rgba(52,199,89,0.1);
  color: #1a7f37;
  border: 1px solid rgba(52,199,89,0.3);
  border-radius: 4px;
  padding: 2px 7px;
}

.sim-optional-badge {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: rgba(92,107,192,0.08);
  color: var(--color-primary);
  border: 1px solid rgba(92,107,192,0.2);
  border-radius: 4px;
  padding: 2px 7px;
}

.sim-subject-status {
  font-size: 13px;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 6px;
}

.sim-subject-status.available {
  background: rgba(52,199,89,0.08);
  color: #1a7f37;
  border: 1px solid rgba(52,199,89,0.25);
}

.sim-subject-status.unavailable {
  background: rgba(255,149,0,0.08);
  color: #a05000;
  border: 1px solid rgba(255,149,0,0.25);
}

.sim-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
}

.sim-option-card {
  position: relative;
  border: 2px solid var(--color-border);
  border-radius: 10px;
  padding: 14px 14px 14px 42px;
  cursor: pointer;
  transition: all 0.15s;
  display: block;
}

.sim-option-card:hover:not(.sim-option-disabled) {
  border-color: var(--color-primary);
  background: rgba(92,107,192,0.03);
}

.sim-option-card.selected {
  border-color: var(--color-primary);
  background: rgba(92,107,192,0.06);
}

.sim-option-card.sim-option-disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.sim-option-checkbox {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
}

.sim-option-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sim-option-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-dark);
}

.sim-option-count {
  font-size: 12px;
  color: var(--color-text-medium);
}

.sim-option-check {
  position: absolute;
  top: 8px;
  right: 10px;
  font-size: 14px;
  color: var(--color-primary);
  display: none;
}

.sim-option-card.selected .sim-option-check { display: block; }

/* Mode cards */
.sim-mode-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.sim-mode-card {
  border: 2px solid var(--color-border);
  border-radius: 10px;
  padding: 16px;
  cursor: pointer;
  transition: all 0.15s;
  display: block;
}

.sim-mode-card:hover, .sim-mode-card.selected {
  border-color: var(--color-primary);
  background: rgba(92,107,192,0.04);
}

.sim-mode-radio { display: none; }

.sim-mode-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sim-mode-icon { font-size: 22px; margin-bottom: 6px; display: block; }

.sim-mode-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-dark);
  display: block;
}

.sim-mode-desc {
  font-size: 12px;
  color: var(--color-text-medium);
  line-height: 1.45;
}

/* Info box */
.sim-config-info {
  background: rgba(92,107,192,0.04);
  border: 1px solid rgba(92,107,192,0.15);
  border-radius: 10px;
  padding: 18px 20px;
}

.sim-config-info-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-dark);
  margin-bottom: 8px;
}

.sim-config-info-list {
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sim-config-info-list li {
  font-size: 13px;
  color: var(--color-text-medium);
  line-height: 1.5;
}

.sim-config-actions {
  display: flex;
  justify-content: flex-end;
}

/* ── Results ──────────────────────────────────────────────────────────────── */
.sim-results-wrapper {
  max-width: 860px;
  margin: 0 auto;
  padding: 36px 24px 60px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.sim-results-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sim-results-error-box {
  background: rgba(239,68,68,.08);
  border: 1px solid rgba(239,68,68,.3);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  color: var(--text-primary, #e2e8f0);
}

.sim-results-back {
  display: flex;
  gap: 20px;
}

.sim-results-title {
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 800;
  color: var(--color-text-dark);
  letter-spacing: -0.3px;
}

.sim-results-subtitle {
  font-size: 14px;
  color: var(--color-text-medium);
}

/* Score hero */
.sim-score-hero {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 32px;
  display: flex;
  gap: 40px;
  align-items: center;
  flex-wrap: wrap;
}

.sim-score-main {
  text-align: center;
  flex-shrink: 0;
}

.sim-score-band {
  font-size: 64px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -2px;
}

.band-excellent { color: #1a7f37; }
.band-good      { color: #a05000; }
.band-developing { color: #c0392b; }

.sim-score-band-sm {
  font-size: 22px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(0,0,0,0.05);
}

.sim-score-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--color-text-tertiary, var(--color-text-medium));
  margin-top: 6px;
}

.sim-score-band-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-medium);
  margin-top: 4px;
}

.sim-esat-scores {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  align-items: flex-start;
}
.sim-esat-sec {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.sim-score-band-sec {
  font-size: 48px;
  width: 88px;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: rgba(0,0,0,.04);
}

.sim-score-details {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

.sim-score-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sim-score-stat-n {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text-dark);
}

.sim-score-stat-l {
  font-size: 12px;
  color: var(--color-text-medium);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Summary */
.sim-summary-box {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
}

.sim-section-heading {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-dark);
  margin-bottom: 14px;
}

.sim-section-subtext {
  font-size: 13px;
  color: var(--color-text-medium);
  margin-bottom: 14px;
}

.sim-summary-list {
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sim-summary-list li {
  font-size: 14px;
  color: var(--color-text-medium);
  line-height: 1.5;
}

/* Section breakdown */
.sim-breakdown-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sim-breakdown-card {
  display: grid;
  grid-template-columns: 200px 1fr 80px;
  align-items: center;
  gap: 12px;
}

.sim-breakdown-subject {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-dark);
}

.sim-breakdown-bar-wrap {
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}

.sim-breakdown-bar {
  height: 100%;
  border-radius: 3px;
  transition: width 0.8s ease;
}

.sim-breakdown-score {
  font-size: 12px;
  color: var(--color-text-medium);
  text-align: right;
}

/* Difficulty rings */
.sim-diff-grid {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.sim-diff-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.sim-diff-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 10px;
  border-radius: 4px;
}

.sim-diff-easy   { background: rgba(52,199,89,0.1);  color: #1a7f37; }
.sim-diff-medium { background: rgba(255,149,0,0.1); color: #a05000; }
.sim-diff-hard   { background: rgba(255,59,48,0.1); color: #c0392b; }

.sim-diff-ring-wrap {
  position: relative;
  width: 80px;
  height: 80px;
}

.sim-diff-ring {
  width: 80px;
  height: 80px;
  transform: rotate(0deg);
}

.sim-diff-ring-bg { stroke: var(--color-border); }
.sim-diff-ring-fill { stroke-linecap: round; transition: stroke-dasharray 0.8s; }

.sim-diff-pct {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-dark);
}

.sim-diff-count {
  font-size: 12px;
  color: var(--color-text-medium);
}

/* Weak topics */
.sim-weak-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sim-weak-item {
  display: grid;
  grid-template-columns: 200px 1fr 60px;
  align-items: center;
  gap: 12px;
}

.sim-weak-topic {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-dark);
}

.sim-weak-bar-wrap {
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}

.sim-weak-bar {
  height: 100%;
  background: var(--sim-red);
  border-radius: 3px;
  transition: width 0.8s;
}

.sim-weak-score {
  font-size: 12px;
  color: var(--color-text-medium);
  text-align: right;
}

/* Question grid overview */
.sim-q-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.sim-q-cell {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.15s, transform 0.1s;
  cursor: pointer;
}

.sim-q-cell:hover { opacity: 0.8; transform: scale(1.05); }

.sim-q-correct     { background: rgba(52,199,89,0.15); color: #1a7f37; border: 1.5px solid rgba(52,199,89,0.3); }
.sim-q-incorrect   { background: rgba(255,59,48,0.12); color: #c0392b; border: 1.5px solid rgba(255,59,48,0.3); }
.sim-q-unattempted { background: rgba(0,0,0,0.04); color: var(--color-text-medium); border: 1.5px solid var(--color-border); }
.sim-q-flagged     { outline: 2px solid var(--sim-yellow); outline-offset: 1px; }

.sim-q-legend {
  display: flex;
  gap: 20px;
  font-size: 12px;
  color: var(--color-text-medium);
  align-items: center;
  flex-wrap: wrap;
}

/* Results CTA */
.sim-results-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ── Throughput ───────────────────────────────────────────────────────────── */
.sim-throughput-box {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
}

.sim-throughput-grid {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.sim-tp-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sim-tp-n {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-text-dark);
}

.sim-tp-l {
  font-size: 12px;
  color: var(--color-text-medium);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sim-tp-eff-good { color: #1a7f37; }
.sim-tp-eff-ok   { color: #a05000; }
.sim-tp-eff-low  { color: #c0392b; }

/* ── Error breakdown ──────────────────────────────────────────────────────── */
.sim-error-breakdown {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
}

.sim-error-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
}

.sim-error-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--color-background, #f5f5f7);
  border-radius: 8px;
}

.sim-error-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.sim-error-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.sim-error-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-dark);
}

.sim-error-desc {
  font-size: 11px;
  color: var(--color-text-medium);
}

.sim-error-count {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-text-dark);
  min-width: 28px;
  text-align: right;
}

/* ── Fatigue curve ────────────────────────────────────────────────────────── */
.sim-fatigue-section {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
}

.sim-fatigue-bars {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.sim-fatigue-bar-item {
  display: grid;
  grid-template-columns: 110px 1fr 48px;
  align-items: center;
  gap: 12px;
}

.sim-fatigue-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-dark);
}

.sim-fatigue-bar-wrap {
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
  overflow: hidden;
}

.sim-fatigue-bar {
  height: 100%;
  border-radius: 4px;
  transition: width 0.8s ease;
}

.sim-fatigue-pct {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-dark);
  text-align: right;
}

/* ── Archetype breakdown ──────────────────────────────────────────────────── */
.sim-archetype-section {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
}

.sim-archetype-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.sim-arch-item {
  display: grid;
  grid-template-columns: 160px 1fr 60px;
  align-items: center;
  gap: 12px;
}

.sim-arch-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-dark);
}

.sim-arch-bar-wrap {
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}

.sim-arch-bar {
  height: 100%;
  border-radius: 3px;
  transition: width 0.8s;
}

.sim-arch-score {
  font-size: 12px;
  color: var(--color-text-medium);
  text-align: right;
}

/* ── Review ───────────────────────────────────────────────────────────────── */
.sim-review-wrapper {
  max-width: 760px;
  margin: 0 auto;
  padding: 36px 24px 60px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sim-review-header {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sim-review-title {
  font-size: 26px;
  font-weight: 800;
  color: var(--color-text-dark);
}

.sim-review-subtitle {
  font-size: 13px;
  color: var(--color-text-medium);
}

.sim-review-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.sim-rn-cell {
  width: 28px;
  height: 28px;
  border-radius: 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.15s;
}

.sim-rn-cell:hover { opacity: 0.75; }

.sim-rn-correct     { background: rgba(52,199,89,0.15); color: #1a7f37; border: 1px solid rgba(52,199,89,0.3); }
.sim-rn-incorrect   { background: rgba(255,59,48,0.12); color: #c0392b; border: 1px solid rgba(255,59,48,0.3); }
.sim-rn-unattempted { background: rgba(0,0,0,0.04); color: var(--color-text-medium); border: 1px solid var(--color-border); }
.sim-rn-flagged     { outline: 2px solid var(--sim-yellow); outline-offset: 1px; }

.sim-review-legend {
  font-size: 12px;
  color: var(--color-text-medium);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Review card */
.sim-review-card {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  scroll-margin-top: 80px;
}

.sim-review-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 10px;
}

.sim-review-qnum {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-dark);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sim-review-verdict {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  flex-shrink: 0;
}

.sim-verdict-correct     { background: rgba(52,199,89,0.15); color: #1a7f37; }
.sim-verdict-incorrect   { background: rgba(255,59,48,0.12); color: #c0392b; }
.sim-verdict-unattempted { background: rgba(0,0,0,0.06); color: var(--color-text-medium); }

.sim-review-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.sim-tag-flagged { background: rgba(255,204,0,0.15); color: #7a5700; }
.sim-tag-subtopic { background: rgba(99,102,241,.15); color: #a5b4fc; }
.sim-tag-arch     { background: rgba(16,185,129,.12); color: #6ee7b7; }
.sim-tag-skill    { background: rgba(236,72,153,.12); color: #f9a8d4; }
.sim-tag-error    { background: rgba(239,68,68,.12);  color: #fca5a5; font-size: 11px; }
.sim-tag-error.sim-error-correct { display: none; }

.sim-review-stem {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-dark);
  white-space: pre-line;
}

/* Review options */
.sim-review-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sim-review-opt {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1.5px solid var(--color-border);
  position: relative;
}

.sim-opt-correct {
  border-color: rgba(52,199,89,0.4);
  background: rgba(52,199,89,0.06);
}

.sim-opt-wrong {
  border-color: rgba(255,59,48,0.3);
  background: rgba(255,59,48,0.05);
}

.sim-opt-letter {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1.5px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.sim-opt-correct .sim-opt-letter {
  border-color: rgba(52,199,89,0.5);
  background: rgba(52,199,89,0.1);
  color: #1a7f37;
}

.sim-opt-wrong .sim-opt-letter {
  border-color: rgba(255,59,48,0.4);
  background: rgba(255,59,48,0.08);
  color: #c0392b;
}

.sim-opt-text { font-size: 14px; line-height: 1.6; flex: 1; }

.sim-opt-badge {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  padding: 2px 7px;
  border-radius: 4px;
}

.sim-badge-correct { background: rgba(52,199,89,0.15); color: #1a7f37; }
.sim-badge-wrong   { background: rgba(255,59,48,0.12); color: #c0392b; }

.sim-unattempted-note {
  font-size: 13px;
  color: var(--color-text-medium);
  font-style: italic;
  padding: 8px 0;
}

/* Worked solution */
.sim-review-solution summary,
.sim-review-commentary summary,
.sim-review-mistakes summary {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-dark);
  padding: 12px 16px;
  border-radius: 8px;
  background: rgba(92,107,192,0.04);
  border: 1px solid rgba(92,107,192,0.12);
  list-style: none;
  user-select: none;
}

.sim-review-solution summary:hover { background: rgba(92,107,192,0.08); }

.sim-solution-body, .sim-commentary-body, .sim-mistakes-list {
  margin-top: 10px;
  padding: 16px;
  background: var(--color-background, #f5f5f7);
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-dark);
  white-space: pre-line;
}

.sim-review-commentary summary {
  background: rgba(255,149,0,0.05);
  border-color: rgba(255,149,0,0.2);
  color: var(--color-text-dark);
}

.sim-review-mistakes summary {
  background: rgba(255,59,48,0.04);
  border-color: rgba(255,59,48,0.15);
}

.sim-mistakes-list {
  padding-left: 32px;
}

.sim-mistakes-list li {
  margin-bottom: 6px;
}

.sim-review-card-nav {
  display: flex;
  gap: 10px;
  padding-top: 4px;
  border-top: 1px solid var(--color-border);
}

.sim-rn-btn {
  font-size: 13px;
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
}

.sim-rn-btn:hover { text-decoration: underline; }

.sim-review-footer {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 8px;
}

/* ── Briefing page ────────────────────────────────────────────────────────── */
.sim-briefing-wrapper {
  max-width: 860px;
  margin: 0 auto;
  padding: 36px 24px 60px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sim-briefing-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sim-briefing-exam-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-primary);
  background: rgba(92,107,192,0.08);
  border: 1px solid rgba(92,107,192,0.2);
  border-radius: 20px;
  padding: 3px 12px;
  width: fit-content;
}

.sim-briefing-title {
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 800;
  color: var(--color-text-dark);
  letter-spacing: -0.3px;
}

.sim-briefing-sub {
  font-size: 14px;
  color: var(--color-text-medium);
}

.sim-briefing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.sim-briefing-card {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sim-briefing-card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sim-briefing-icon { font-size: 16px; }

.sim-briefing-list {
  padding-left: 16px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.sim-briefing-list li {
  font-size: 13px;
  color: var(--color-text-medium);
  line-height: 1.5;
}

.sim-pace-table {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sim-pace-row {
  display: grid;
  grid-template-columns: 130px 60px 1fr;
  gap: 8px;
  align-items: center;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 6px;
  background: rgba(0,0,0,0.03);
}

.sim-pace-danger-row {
  background: rgba(255,59,48,0.05);
  border: 1px solid rgba(255,59,48,0.15);
}

.sim-pace-type  { font-weight: 600; color: var(--color-text-dark); }
.sim-pace-target { font-weight: 700; color: var(--color-primary); font-variant-numeric: tabular-nums; }
.sim-pace-action { color: var(--color-text-medium); }

.sim-briefing-note {
  font-size: 12px;
  color: var(--color-text-medium);
  padding: 8px 10px;
  background: rgba(92,107,192,0.04);
  border-radius: 6px;
  border-left: 3px solid var(--color-primary);
}

.sim-section-list { display: flex; flex-direction: column; gap: 8px; }

.sim-section-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--color-background, #f5f5f7);
  border-radius: 8px;
}

.sim-section-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sim-section-name { font-size: 13px; font-weight: 600; color: var(--color-text-dark); flex: 1; }
.sim-section-qs { font-size: 12px; color: var(--color-text-medium); }

.sim-briefing-keys {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 16px 20px;
}

.sim-briefing-keys-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-dark);
  margin-bottom: 10px;
}

.sim-keys-row {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--color-text-medium);
}

.sim-keys-row kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-background, #f5f5f7);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 1px 5px;
  font-family: inherit;
  font-size: 11px;
  margin: 0 2px;
  box-shadow: 0 1px 0 var(--color-border);
}

.sim-briefing-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
}

.sim-briefing-disclaimer {
  font-size: 11px;
  color: var(--color-text-medium);
  text-align: center;
}

@media (max-width: 640px) {
  .sim-briefing-grid { grid-template-columns: 1fr; }
}

/* ── History ──────────────────────────────────────────────────────────────── */
.sim-history-wrapper {
  max-width: 760px;
  margin: 0 auto;
  padding: 36px 24px 60px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sim-history-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sim-history-item {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  align-items: center;
  gap: 16px;
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 16px 20px;
}

.sim-history-exam {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sim-history-sections {
  font-size: 13px;
  color: var(--color-text-medium);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.sim-history-score {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sim-history-raw {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-dark);
}

.sim-history-pct {
  font-size: 13px;
  color: var(--color-text-medium);
}

.sim-history-date {
  font-size: 12px;
  color: var(--color-text-medium);
}

.sim-history-link {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
}

.sim-history-link:hover { text-decoration: underline; }

.sim-empty-state {
  text-align: center;
  padding: 60px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.sim-empty-icon { font-size: 48px; }

.sim-empty-state h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-dark);
}

.sim-empty-state p {
  font-size: 14px;
  color: var(--color-text-medium);
}

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .sim-exams { grid-template-columns: 1fr; }
  .sim-mode-grid { grid-template-columns: 1fr; }
  .sim-score-hero { flex-direction: column; align-items: flex-start; }
  .sim-breakdown-card { grid-template-columns: 1fr auto; }
  .sim-breakdown-bar-wrap { display: none; }
  .sim-weak-item { grid-template-columns: 1fr auto; }
  .sim-weak-bar-wrap { display: none; }
  .sim-history-item { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════════════════════════
   Custom / Past Paper Simulator
   ═══════════════════════════════════════════════════════════════ */

.custom-sim-wrapper {
  max-width: 860px;
  margin: 0 auto;
  padding: 36px 24px 80px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.custom-sim-title {
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 700;
  color: var(--color-text-dark);
  margin: 0 0 6px;
}

.custom-sim-subtitle {
  font-size: 15px;
  color: var(--color-text-medium);
  margin: 0;
  line-height: 1.6;
}

.custom-sim-header { display: flex; flex-direction: column; gap: 8px; }

/* Disclaimer */
.custom-disclaimer {
  background: rgba(245,158,11,.07);
  border: 1px solid rgba(245,158,11,.35);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 13px;
  color: var(--color-text-medium);
  line-height: 1.7;
}
.custom-disclaimer-prominent {
  background: rgba(239,68,68,.05);
  border-color: rgba(239,68,68,.3);
}

/* Flash messages */
.custom-flash {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.5;
}
.custom-flash-ok  { background: rgba(16,185,129,.08); border:1px solid rgba(16,185,129,.3); color:#059669; }
.custom-flash-err { background: rgba(239,68,68,.07);  border:1px solid rgba(239,68,68,.3);  color:#dc2626; }

/* Upload CTA bar */
.custom-upload-cta {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.custom-upload-note {
  font-size: 13px;
  color: var(--color-text-medium);
}

/* Paper grid */
.custom-empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--color-text-medium);
  font-size: 15px;
}

.custom-paper-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.custom-paper-card {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 18px 20px;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color .15s, box-shadow .15s, transform .15s;
}
.custom-paper-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 16px rgba(92,107,192,.12);
  transform: translateY(-2px);
}

.custom-paper-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.custom-paper-tag {
  background: rgba(92,107,192,.12);
  color: var(--color-primary);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.custom-paper-qcount {
  font-size: 12px;
  color: var(--color-text-medium);
}

.custom-paper-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-dark);
  margin: 0;
  line-height: 1.4;
}

.custom-paper-meta {
  display: flex;
  gap: 6px;
  font-size: 12px;
  color: var(--color-text-medium);
}

/* Upload form */
.custom-upload-form {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.custom-form-field { display: flex; flex-direction: column; gap: 6px; }
.custom-form-label { font-size: 14px; font-weight: 600; color: var(--color-text-dark); }
.custom-required   { color: #dc2626; }

.custom-form-input,
.custom-form-select {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--color-text-dark);
  outline: none;
  transition: border-color .15s;
}
.custom-form-input:focus,
.custom-form-select:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(92,107,192,.1); }

.custom-form-hint { font-size: 12px; color: var(--color-text-medium); }

.custom-file-drop {
  position: relative;
  background: var(--color-background);
  border: 1.5px dashed var(--color-border);
  border-radius: 10px;
  padding: 20px;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.custom-file-drop:hover,
.custom-file-drop.drag-over {
  border-color: var(--color-primary);
  background: rgba(92,107,192,.04);
}
.custom-file-input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}
.custom-file-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-medium);
  pointer-events: none;
}

.custom-form-check {
  flex-direction: row;
  align-items: flex-start;
  gap: 10px;
}
.custom-form-check input { margin-top: 3px; flex-shrink: 0; }
.custom-form-check label { font-size: 13px; color: var(--color-text-medium); line-height: 1.5; }

/* Processing spinner */
.custom-processing-box {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 40px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.custom-processing-spinner {
  width: 44px; height: 44px;
  border: 3px solid rgba(92,107,192,.2);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: customSpin .8s linear infinite;
}
@keyframes customSpin { to { transform: rotate(360deg); } }
.custom-processing-title { font-size: 18px; font-weight: 700; color: var(--color-text-dark); margin: 0; }
.custom-processing-desc  { font-size: 14px; color: var(--color-text-medium); margin: 0; max-width: 440px; line-height: 1.6; }

/* Detail card */
.custom-detail-card {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.custom-detail-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.custom-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.custom-stat-n { font-size: 1.6rem; font-weight: 700; color: var(--color-text-dark); }
.custom-stat-l { font-size: 12px; color: var(--color-text-medium); text-transform: uppercase; letter-spacing: .06em; }

.custom-detail-meta {
  display: flex;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-medium);
}

/* Question preview */
.custom-preview-section { display: flex; flex-direction: column; gap: 16px; }

.custom-preview-q {
  background: var(--color-card-background);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.custom-preview-qnum { font-size: 12px; color: var(--color-text-medium); font-weight: 600; }
.custom-preview-stem { font-size: 14px; color: var(--color-text-dark); line-height: 1.7; }
.custom-preview-opts { display: flex; flex-direction: column; gap: 4px; }
.custom-preview-opt  { font-size: 13px; color: var(--color-text-medium); padding: 4px 8px; border-radius: 6px; }

@media (max-width: 600px) {
  .custom-upload-form { padding: 20px 18px; }
  .custom-detail-card { padding: 20px 18px; }
  .custom-upload-cta  { flex-direction: column; align-items: flex-start; gap: 10px; }
  .custom-detail-stats { gap: 20px; }
}