/* ============================================================
   workbook.css — Sanskrit workbook + answer-key styles
   Pass 3d. Honours the locked palette; works in light + oxblood dark.
============================================================ */

/* ── The two row-tiles ────────────────────────────────────── */
.learn-card--workbook,
.learn-card--answers {
  background: linear-gradient(155deg, var(--color-surface) 0%, var(--color-surface-2) 100%);
}
.learn-card--workbook .learn-card-icon,
.learn-card--answers  .learn-card-icon { color: var(--color-ruby); }
[data-theme="dark"] .learn-card--workbook .learn-card-icon,
[data-theme="dark"] .learn-card--answers  .learn-card-icon { color: var(--color-gold-bright); }

/* ── Workbook unit grid (the hub page) ────────────────────── */
.workbook-unit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-5);
}
.workbook-unit-card {
  display: flex;
  align-items: stretch;
  gap: var(--space-3);
  text-align: left;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.workbook-unit-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-gold-deep);
}
.workbook-unit-num {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--color-gold-deep);
  align-self: center;
  min-width: 1.6em;
  text-align: center;
}
.workbook-unit-body { flex: 1; }
.workbook-unit-deva {
  font-size: 1.3rem;
  color: var(--color-ruby);
  line-height: 1.2;
  margin-bottom: 2px;
}
[data-theme="dark"] .workbook-unit-deva { color: var(--color-gold-bright); }
.workbook-unit-iast {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-text);
  margin-bottom: 2px;
}
.workbook-unit-tag {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-style: italic;
}
.workbook-unit-count {
  align-self: center;
  font-size: 0.8rem;
  color: var(--color-text-faint);
  white-space: nowrap;
}

/* ── Teacher note block ───────────────────────────────────── */
.workbook-teacher-note {
  background: color-mix(in oklab, var(--color-gold) 8%, var(--color-surface));
  border-left: 4px solid var(--color-gold-deep);
  padding: var(--space-3) var(--space-4);
  margin: var(--space-5) 0;
  border-radius: 0 8px 8px 0;
}
[data-theme="dark"] .workbook-teacher-note {
  background: color-mix(in oklab, var(--color-gold-glow) 20%, var(--color-surface));
  border-left-color: var(--color-gold);
}
.workbook-teacher-eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold-deep);
  margin-bottom: var(--space-2);
}
[data-theme="dark"] .workbook-teacher-eyebrow { color: var(--color-gold); }
.workbook-teacher-note p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text);
}

/* ── Action button row ────────────────────────────────────── */
.workbook-actions {
  display: flex;
  gap: var(--space-3);
  margin: var(--space-4) 0 var(--space-5);
  flex-wrap: wrap;
}
.workbook-action-btn {
  padding: 10px 18px;
  background: var(--color-ruby);
  color: #faf3df;
  border: none;
  border-radius: 8px;
  font: 600 0.95rem var(--font-serif);
  cursor: pointer;
  transition: background .15s ease;
}
.workbook-action-btn:hover { background: var(--color-ruby-deep); }
.workbook-action-btn--secondary {
  background: transparent;
  color: var(--color-ruby);
  border: 1px solid var(--color-ruby);
}
.workbook-action-btn--secondary:hover {
  background: color-mix(in oklab, var(--color-ruby) 8%, transparent);
}
[data-theme="dark"] .workbook-action-btn { background: var(--color-gold); color: var(--color-bg); }
[data-theme="dark"] .workbook-action-btn:hover { background: var(--color-gold-bright); }
[data-theme="dark"] .workbook-action-btn--secondary { background: transparent; color: var(--color-gold-bright); border-color: var(--color-gold); }

/* ── Exercise common ──────────────────────────────────────── */
.workbook-ex {
  margin: var(--space-5) 0;
  padding: var(--space-4);
  background: var(--color-surface);
  border-radius: 12px;
  border: 1px solid var(--color-divider);
}
.workbook-ex-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold-deep);
  margin-bottom: var(--space-2);
}
[data-theme="dark"] .workbook-ex-eyebrow { color: var(--color-gold); }
.workbook-ex-prompt {
  margin: 0 0 var(--space-3) 0;
  font-style: italic;
  color: var(--color-text-muted);
  font-family: var(--font-serif);
  font-size: 1.02rem;
}

/* ── Tracing ──────────────────────────────────────────────── */
.workbook-tracing-grid { display: flex; flex-direction: column; gap: var(--space-2); }
.workbook-tracing-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  border-bottom: 1px dotted var(--color-divider);
}
.workbook-tracing-glyph {
  font-size: 2.2rem;
  min-width: 2em;
  color: var(--color-ruby);
  text-align: center;
}
[data-theme="dark"] .workbook-tracing-glyph { color: var(--color-gold-bright); }
.workbook-tracing-reps {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.workbook-tracing-slot {
  width: 44px;
  height: 44px;
  border: 1px solid color-mix(in oklab, var(--color-gold) 30%, transparent);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  background: var(--color-bg);
}
.workbook-tracing-slot--ghost {
  color: color-mix(in oklab, var(--color-text) 18%, transparent);
}
.workbook-tracing-slot--blank { color: transparent; }
.workbook-tracing-meta {
  flex: 1;
  min-width: 140px;
}
.workbook-tracing-iast {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--color-text);
}
.workbook-tracing-hint {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ── Transliteration ──────────────────────────────────────── */
.workbook-translit-list { display: flex; flex-direction: column; gap: 6px; }
.workbook-translit-row {
  display: grid;
  grid-template-columns: 1fr auto 2fr;
  align-items: center;
  gap: var(--space-3);
  padding: 8px 4px;
  border-bottom: 1px dotted var(--color-divider);
}
.workbook-translit-q {
  font-size: 1.2rem;
  color: var(--color-text);
}
.workbook-translit-q.sanskrit { font-size: 1.6rem; color: var(--color-ruby); }
[data-theme="dark"] .workbook-translit-q.sanskrit { color: var(--color-gold-bright); }
.workbook-translit-arrow {
  color: var(--color-gold-deep);
  font-size: 1.1rem;
}
.workbook-translit-a {
  font-family: var(--font-serif);
  font-size: 1.05rem;
}
.workbook-translit-tap {
  background: transparent;
  border: 1px dashed var(--color-border);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
  color: var(--color-text-faint);
  font-style: italic;
  text-align: left;
  font: inherit;
}
.workbook-translit-tap:hover {
  border-color: var(--color-gold-deep);
  color: var(--color-text-muted);
}
.workbook-translit-a.is-revealed {
  background: color-mix(in oklab, var(--color-gold) 10%, transparent);
  border: 1px solid color-mix(in oklab, var(--color-gold) 30%, transparent);
  border-radius: 6px;
  padding: 6px 12px;
  color: var(--color-ruby);
  font-weight: 500;
  font-style: normal;
}
.workbook-translit-a.is-revealed.sanskrit {
  font-size: 1.5rem;
  color: var(--color-ruby);
}
[data-theme="dark"] .workbook-translit-a.is-revealed { color: var(--color-gold-bright); }

/* ── Vocab flip cards ─────────────────────────────────────── */
.workbook-vocab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-3);
}
.workbook-vocab-card {
  position: relative;
  min-height: 130px;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
  font: inherit;
  color: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .25s ease, border-color .25s ease, box-shadow .15s ease;
}
.workbook-vocab-card:hover {
  border-color: var(--color-gold-deep);
  box-shadow: var(--shadow-sm);
}
.workbook-vocab-front {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--color-ruby);
  text-align: center;
  width: 100%;
}
[data-theme="dark"] .workbook-vocab-front { color: var(--color-gold-bright); }
.workbook-vocab-back {
  display: none;
  font-family: var(--font-serif);
  font-size: 0.96rem;
  line-height: 1.55;
  color: var(--color-text);
}
.workbook-vocab-card.is-flipped {
  background: color-mix(in oklab, var(--color-gold) 8%, var(--color-surface));
  border-color: var(--color-gold-deep);
}
.workbook-vocab-card.is-flipped .workbook-vocab-front { display: none; }
.workbook-vocab-card.is-flipped .workbook-vocab-back  { display: block; }
[data-theme="dark"] .workbook-vocab-card.is-flipped {
  background: color-mix(in oklab, var(--color-gold-glow) 30%, var(--color-surface));
}

/* ── Parsing exercises ────────────────────────────────────── */
.workbook-parse-list { display: flex; flex-direction: column; gap: var(--space-2); }
.workbook-parse-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-2) 0;
  border-bottom: 1px dotted var(--color-divider);
}
.workbook-parse-q {
  font-size: 1.1rem;
  color: var(--color-text);
  line-height: 1.5;
}
.workbook-parse-q.sanskrit { font-size: 1.45rem; color: var(--color-ruby); }
[data-theme="dark"] .workbook-parse-q.sanskrit { color: var(--color-gold-bright); }
.workbook-parse-num {
  color: var(--color-gold-deep);
  margin-right: 6px;
  font-weight: 600;
  font-family: var(--font-serif);
  font-size: 0.95rem;
}
.workbook-parse-a-wrap { display: flex; flex-direction: column; gap: 4px; }
.workbook-parse-write-slot {
  min-height: 32px;
  border-bottom: 1px solid var(--color-border);
  margin: 4px 0;
}
.workbook-parse-reveal-btn,
.workbook-fill-reveal-btn {
  align-self: flex-start;
  padding: 4px 12px;
  background: transparent;
  color: var(--color-gold-deep);
  border: 1px solid var(--color-gold-deep);
  border-radius: 6px;
  font: 500 0.82rem var(--font-serif);
  cursor: pointer;
  letter-spacing: 0.04em;
}
.workbook-parse-reveal-btn:hover,
.workbook-fill-reveal-btn:hover {
  background: color-mix(in oklab, var(--color-gold) 10%, transparent);
}
.workbook-parse-a,
.workbook-fill-a {
  display: none;
  padding: 8px 12px;
  background: color-mix(in oklab, var(--color-gold) 10%, transparent);
  border-radius: 6px;
  font-family: var(--font-serif);
  color: var(--color-ruby);
  margin-top: 4px;
  line-height: 1.55;
}
[data-theme="dark"] .workbook-parse-a,
[data-theme="dark"] .workbook-fill-a { color: var(--color-gold-bright); }
.workbook-parse-a.is-revealed,
.workbook-fill-a.is-revealed { display: block; }

/* ── Fill in the blank ────────────────────────────────────── */
.workbook-fill-list { display: flex; flex-direction: column; gap: var(--space-2); }
.workbook-fill-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-2) 0;
  border-bottom: 1px dotted var(--color-divider);
}
.workbook-fill-q {
  font-size: 1.05rem;
  color: var(--color-text);
  line-height: 1.5;
}
.workbook-fill-num {
  color: var(--color-gold-deep);
  margin-right: 6px;
  font-weight: 600;
  font-family: var(--font-serif);
  font-size: 0.95rem;
}
.workbook-fill-write-slot {
  min-height: 32px;
  border-bottom: 1px solid var(--color-border);
  margin: 4px 0;
}

/* ── Mobile tightening ────────────────────────────────────── */
@media (max-width: 600px) {
  .workbook-translit-row { grid-template-columns: 1fr; gap: 4px; }
  .workbook-translit-arrow { display: none; }
  .workbook-tracing-row { flex-wrap: wrap; }
  .workbook-tracing-glyph { font-size: 1.8rem; }
  .workbook-tracing-slot { width: 38px; height: 38px; font-size: 1.4rem; }
}

/* ── Print stylesheet (in case user prints the live page) ── */
@media print {
  .workbook-actions,
  .workbook-parse-reveal-btn,
  .workbook-fill-reveal-btn,
  .gita-back-btn { display: none !important; }
  .workbook-parse-a.is-revealed,
  .workbook-fill-a.is-revealed { break-inside: avoid; }
  .workbook-ex { break-inside: avoid; }
}