/* ============================================================
   Cloze (fill-in-the-blank) exercise engine — shared styles
   Palm-leaf-manuscript theme, light + dark. Theme tokens lifted
   from public/lila/sort/engine.css so both families match.
   Consumed by drills (public/lila/cloze/<slug>/index.html).
   ============================================================ */

.clozex {
  --ground: #f3ecdb;
  --panel: #faf5e8;
  --ink: #2a2118;
  --ink-soft: #6b5d47;
  --line: #d9cba8;
  --accent: #a8451f;
  --good: #3f7d3f;
  --bad: #b23b2e;
  --shadow: 0 1px 2px rgba(60,45,20,.12), 0 6px 18px rgba(60,45,20,.10);
  --radius: 10px;
  --serif: "Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans: "Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
  --deva: "Noto Sans Devanagari","Nirmala UI","Kohinoor Devanagari","Mangal",var(--serif);

  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.5;
}

@media (prefers-color-scheme: dark) {
  .clozex {
    --ground:#1c1712; --panel:#26201a; --ink:#efe6d4; --ink-soft:#b3a488;
    --line:#423628; --accent:#e07a4e; --good:#7cc17c; --bad:#e0796c;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 22px rgba(0,0,0,.35);
  }
}

/* explicit theme toggles win over the media query in both directions */
:root[data-theme="light"] .clozex {
  --ground:#f3ecdb; --panel:#faf5e8; --ink:#2a2118; --ink-soft:#6b5d47;
  --line:#d9cba8; --accent:#a8451f; --good:#3f7d3f; --bad:#b23b2e;
  --shadow: 0 1px 2px rgba(60,45,20,.12), 0 6px 18px rgba(60,45,20,.10);
}
:root[data-theme="dark"] .clozex {
  --ground:#1c1712; --panel:#26201a; --ink:#efe6d4; --ink-soft:#b3a488;
  --line:#423628; --accent:#e07a4e; --good:#7cc17c; --bad:#e0796c;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 22px rgba(0,0,0,.35);
}

/* ---- layout ---- */
.clozex * { box-sizing: border-box; }

.clozex .task {
  font-size: 16px; color: var(--ink-soft); margin: 0 0 18px; max-width: 62ch;
}

.clozex .toolbar {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 0 0 20px;
}
.clozex button {
  font-family: var(--sans); font-size: 14px; font-weight: 600;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  padding: 9px 16px; border-radius: 999px; cursor: pointer;
  box-shadow: var(--shadow); transition: transform .08s ease, border-color .15s ease, background .15s ease;
}
.clozex button:hover { border-color: var(--accent); }
.clozex button:active { transform: translateY(1px); }
.clozex button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.clozex button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.clozex button.ghost { background: transparent; box-shadow: none; }
.clozex .spacer { flex: 1 1 auto; }
.clozex .score {
  font-variant-numeric: tabular-nums; font-weight: 600; font-size: 14px;
  color: var(--ink-soft); white-space: nowrap;
}

/* ---- passage ---- */
.clozex .passage {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 26px; box-shadow: var(--shadow);
  font-family: var(--deva); font-size: 27px; line-height: 2.1; color: var(--ink);
  text-wrap: pretty;
}

/* ---- a blank ---- */
.clozex .blank {
  position: relative; display: inline-flex; flex-direction: column;
  vertical-align: middle; margin: 0 2px;
}
.clozex .cloze-select {
  font-family: var(--deva); font-size: 22px; color: var(--ink);
  background: var(--ground); border: 1.5px solid var(--accent); border-radius: 8px;
  padding: 2px 26px 2px 10px; cursor: pointer;
  box-shadow: var(--shadow);
  appearance: none; -webkit-appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--accent) 50%),
    linear-gradient(135deg, var(--accent) 50%, transparent 50%);
  background-position: right 12px center, right 7px center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  transition: border-color .12s, box-shadow .12s;
}
.clozex .cloze-select:hover { border-color: var(--accent); }
.clozex .cloze-select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
/* dropdown option list renders in OS chrome — force legible sizing where honoured */
.clozex .cloze-select option { font-family: var(--deva); font-size: 18px; }

.clozex .blank.correct .cloze-select { border-color: var(--good); box-shadow: 0 0 0 2px var(--good); }
.clozex .blank.wrong   .cloze-select { border-color: var(--bad);  box-shadow: 0 0 0 2px var(--bad); }

.clozex .blank .mark {
  position: absolute; top: -10px; right: -10px; width: 20px; height: 20px;
  border-radius: 50%; font-size: 13px; font-weight: 700; color: #fff;
  display: none; align-items: center; justify-content: center; line-height: 1;
  font-family: var(--sans);
}
.clozex .blank.correct .mark { display: flex; background: var(--good); }
.clozex .blank.wrong   .mark { display: flex; background: var(--bad); }

/* per-blank Russian gloss, revealed by the hints toggle */
.clozex .blank .gloss {
  display: none; font-family: var(--sans); font-size: 11px; color: var(--ink-soft);
  text-align: center; margin-top: 2px; line-height: 1.3;
}
.clozex.show-hints .blank .gloss { display: block; }

/* ---- feedback ---- */
.clozex .feedback {
  margin-top: 20px; border-radius: var(--radius); padding: 14px 18px;
  font-weight: 600; display: none; align-items: center; gap: 10px;
  background: color-mix(in srgb, var(--good) 16%, var(--panel));
  border: 1px solid var(--good); color: var(--ink);
}
.clozex .feedback.show { display: flex; }
.clozex .feedback .om { font-family: var(--deva); font-size: 22px; color: var(--good); }

@media (max-width: 620px) {
  .clozex .passage { font-size: 22px; line-height: 2; padding: 18px 16px; }
  .clozex .cloze-select { font-size: 19px; }
}
@media (prefers-reduced-motion: reduce) { .clozex * { transition: none !important; } }