/* ─── Mock Tests Page ────────────────────────────────────────────────────── */

/* ── Screens ── */
#screen-select, #screen-test, #screen-result { display: none; }
#screen-select.active, #screen-test.active, #screen-result.active { display: block; }

/* ── Page header ── */
.page-header {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--sand-200);
  margin-bottom: 1.75rem;
}
.page-header h1 {
  font-family: 'Newsreader', serif;
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.35rem;
}
.page-header p {
  font-size: 0.85rem;
  color: var(--ink-3);
}

/* ── Test grid (select screen) ── */
.test-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

/* ── Test card (injected by JS) ── */
.test-card {
  background: #fff;
  border: 1.5px solid var(--sand-200);
  border-radius: 12px;
  padding: 1.25rem;
  cursor: pointer;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.test-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); border-color: var(--sand-300); }
.test-card-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.85rem;
}
.test-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--sand-100);
  border-radius: 8px;
}
.test-card-header h3 {
  font-family: 'Newsreader', serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.15rem;
}
.test-sub {
  font-size: 0.72rem;
  color: var(--ink-3);
}
.test-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1rem;
}
.test-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--sand-100);
  color: var(--ink-3);
  border: 1px solid var(--sand-200);
}
.test-start-btn {
  width: 100%;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.55rem 1rem;
  background: var(--sand-900);
  color: #fff;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-family: 'Lato', sans-serif;
  transition: opacity 0.15s;
}
.test-start-btn:hover { opacity: 0.88; }

/* ── Test top bar ── */
.test-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0 0.75rem;
  border-bottom: 1px solid var(--sand-200);
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}
.test-topbar-name {
  font-family: 'Newsreader', serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
}
.test-topbar-meta {
  font-size: 0.75rem;
  color: var(--ink-3);
  margin-top: 0.15rem;
}
.timer-wrap { text-align: right; }
.timer-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  font-weight: 700;
  margin-bottom: 0.1rem;
}
#timer-display {
  font-family: 'Newsreader', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.02em;
}
#timer-display.warning { color: #dc2626; }

/* ── Progress bar ── */
.progress-bar-wrap {
  height: 4px;
  background: var(--sand-200);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 0.3rem;
}
.progress-bar-fill {
  height: 100%;
  background: #2563eb;
  border-radius: 999px;
  transition: width 0.3s;
}
.progress-label {
  font-size: 0.72rem;
  color: var(--ink-3);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

/* ── Question nav bar ── */
.q-nav-bar {
  background: #fff;
  border: 1px solid var(--sand-200);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}
.nav-legend {
  display: flex;
  gap: 1rem;
  font-size: 0.72rem;
  color: var(--ink-3);
  flex-wrap: wrap;
  margin-bottom: 0;
  width: 100%;
  order: 99;
  padding-top: 0.5rem;
  border-top: 1px solid var(--sand-100);
  margin-top: 0.4rem;
}
.nav-legend span {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.legend-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

/* ── Question dots (JS generates .q-dot) ── */
.q-dot {
  min-width: 28px;
  height: 28px;
  padding: 0 6px;
  border-radius: 6px;
  border: 1.5px solid var(--sand-300);
  background: var(--sand-100);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s;
  font-family: 'Lato', sans-serif;
}
.q-dot.answered { background: #eff6ff; border-color: #93c5fd; color: #1d4ed8; }
.q-dot.active   { background: #2563eb; border-color: #2563eb; color: #fff; }
.q-dot.correct  { background: #dcfce7; border-color: #86efac; color: #15803d; }
.q-dot.wrong    { background: #fee2e2; border-color: #fca5a5; color: #991b1b; }
.q-dot.skipped  { background: var(--sand-100); border-color: var(--sand-300); color: var(--ink-3); }

/* ── Question card ── */
.q-card {
  background: #fff;
  border: 1.5px solid var(--sand-200);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}
.q-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.85rem;
}
.q-number {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.q-chapter-tag {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--sand-100);
  color: var(--ink-3);
}
.q-text {
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

/* ── Options grid ── */
.options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  margin-bottom: 1rem;
}
.option-btn {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.75rem 0.9rem;
  background: var(--sand-50);
  border: 1.5px solid var(--sand-200);
  border-radius: 9px;
  font-size: 0.84rem;
  color: var(--ink-2);
  line-height: 1.5;
  cursor: pointer;
  text-align: left;
  font-family: 'Lato', sans-serif;
  transition: all 0.15s;
}
.option-btn:hover    { background: #eff6ff; border-color: #93c5fd; }
.option-btn.selected { background: #eff6ff; border-color: #2563eb; color: var(--ink); }
.option-btn.correct  { background: #f0fdf4; border-color: #86efac; color: #15803d; }
.option-btn.wrong    { background: #fef2f2; border-color: #fca5a5; color: #991b1b; }
.option-btn.missed   { background: #f0fdf4; border-color: #86efac; }
/* Extra states generated by JS */
.option-btn.correct-ans { background: #f0fdf4; border-color: #86efac; color: #15803d; }
.option-btn.wrong-ans   { background: #fef2f2; border-color: #fca5a5; color: #991b1b; }
.option-key {
  font-weight: 900;
  color: var(--ink-3);
  flex-shrink: 0;
  font-size: 0.75rem;
}

/* ── Explanation box ── */
.explanation-box {
  display: none;
  background: var(--sand-50);
  border: 1px solid var(--sand-200);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  font-size: 0.84rem;
  color: var(--ink-2);
  line-height: 1.65;
  margin-top: 0.75rem;
}
.explanation-box.visible { display: block; }
.explanation-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  margin-bottom: 0.35rem;
}

/* ── Controls ── */
.q-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.q-counter {
  flex: 1;
  text-align: center;
  font-size: 0.78rem;
  color: var(--ink-3);
  font-weight: 600;
}
.btn {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.5rem 1.1rem;
  border-radius: 8px;
  border: 1.5px solid;
  cursor: pointer;
  font-family: 'Lato', sans-serif;
  transition: all 0.15s;
}
.btn-secondary {
  background: #fff;
  color: var(--ink-2);
  border-color: var(--sand-300);
}
.btn-secondary:hover { background: var(--sand-100); }
.btn-submit {
  background: #dc2626;
  color: #fff;
  border-color: #dc2626;
  margin-left: auto;
}
.btn-submit:hover { background: #b91c1c; border-color: #b91c1c; }
.btn-primary {
  background: var(--sand-900);
  color: #fff;
  border-color: var(--sand-900);
}
.btn-primary:hover { opacity: 0.9; }

/* ── Result hero ── */
.result-hero {
  background: #fff;
  border: 1px solid var(--sand-200);
  border-radius: 14px;
  padding: 2rem 1.5rem;
  text-align: center;
  margin-bottom: 1.5rem;
}
.result-score-big {
  font-family: 'Newsreader', serif;
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.denom { font-size: 1.8rem; color: var(--ink-3); }
.result-pct {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink-2);
  margin-bottom: 0.25rem;
}
.result-grade {
  font-size: 0.82rem;
  color: var(--ink-3);
  margin-bottom: 1.5rem;
}
.result-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.result-stat .val {
  font-family: 'Newsreader', serif;
  font-size: 1.5rem;
  font-weight: 700;
}
.result-stat .lbl {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-3);
  font-weight: 700;
  margin-top: 0.15rem;
}
.result-actions {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Review section ── */
.review-heading {
  font-family: 'Newsreader', serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--sand-200);
}
.review-item {
  background: #fff;
  border: 1.5px solid var(--sand-200);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
}
.review-item.correct, .review-item.r-correct { border-color: #86efac; }
.review-item.wrong, .review-item.r-wrong     { border-color: #fca5a5; }
.review-item.skipped, .review-item.r-skipped { border-color: var(--sand-300); opacity: 0.75; }
.review-header {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}
.review-num {
  font-size: 0.68rem;
  font-weight: 800;
  color: var(--ink-3);
  background: var(--sand-100);
  border-radius: 4px;
  padding: 0.15rem 0.4rem;
  flex-shrink: 0;
  align-self: flex-start;
}
.review-q-text {
  font-size: 0.84rem;
  color: var(--ink);
  line-height: 1.5;
  font-weight: 600;
}
.review-answers {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}
.review-your {
  font-size: 0.78rem;
  color: var(--ink-2);
}
.review-correct-tag {
  font-size: 0.78rem;
  color: #15803d;
  font-weight: 700;
}
.review-expl {
  font-size: 0.78rem;
  color: var(--ink-3);
  line-height: 1.55;
  margin-bottom: 0.35rem;
}
.review-chapter {
  font-size: 0.65rem;
  color: var(--ink-3);
  background: var(--sand-100);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  display: inline-block;
}

@media (max-width: 640px) {
  .options-grid { grid-template-columns: 1fr; }
  .test-grid { grid-template-columns: 1fr; }
  .result-stats { gap: 1rem; }

  /* Very compact page header */
  .page-header {
    padding: .5rem 0 .4rem;
    margin-bottom: .75rem;
  }
  .page-header h1 { font-size: .88rem; }
  .page-header p { font-size: .62rem; line-height: 1.4; }

  /* Compact test topbar */
  .test-topbar { padding: .6rem 0 .5rem; gap: .5rem; margin-bottom: .5rem; }
  .test-topbar-name { font-size: .85rem; }
  .test-topbar-meta { font-size: .65rem; }
  #timer-display { font-size: 1.1rem; }

  /* Smaller question card */
  .q-card { padding: 1rem; border-radius: 10px; }
  .q-text { font-size: .85rem; margin-bottom: 1rem; }
  .option-btn { padding: .6rem .75rem; font-size: .78rem; border-radius: 8px; }

  /* Replace nav dots with dropdown */
  .q-nav-bar .q-dot { display: none; }
  .q-nav-bar .nav-legend { display: none; }
  .q-nav-bar {
    padding: .5rem .75rem;
    position: sticky;
    top: 0;
    z-index: 90;
    background: rgba(253,252,250,.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--sand-200);
  }
  .q-nav-bar .mobile-select { display: block; }

  /* Compact result */
  .result-hero { padding: 1.25rem 1rem; border-radius: 12px; }
  .result-score-big { font-size: 2.5rem; }
  .denom { font-size: 1.3rem; }
  .result-pct { font-size: .95rem; }

  /* Compact review */
  .review-item { padding: .75rem 1rem; }
  .review-q-text { font-size: .78rem; }
  .review-expl { font-size: .72rem; }

  /* Buttons */
  .btn { font-size: .72rem; padding: .4rem .85rem; }
  .test-start-btn { font-size: .75rem; padding: .5rem .85rem; }
}