/* Shared styling for all "Hidden Word" listening exercises.
   One file, included by every exercise page — see hidden-engine.js for
   how to add a new exercise. */

:root {
  --bg: #eef3f7;
  --panel: #ffffff;
  --ink: #1f2d3a;
  --ink-dim: #5c7183;
  --accent: #2f6690;
  --accent-dark: #204a68;
  --border: #d7e3ea;
  --right: #2f8a52;
  --wrong: #b23b23;
  --radius: 10px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Noto Sans Thai', 'Segoe UI', Arial, sans-serif;
  line-height: 1.5;
}
details.help .gloss { color: var(--ink-dim); font-style: italic; }
.wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: 20px 18px 50px;
}
h1 {
  text-align: center;
  color: var(--accent-dark);
  margin: 0 0 4px;
}
.subtitle {
  text-align: center;
  color: var(--ink-dim);
  font-style: italic;
  margin: 0 0 16px;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 14px;
  box-shadow: 0 1px 3px rgba(20, 30, 40, 0.06);
}
#scoreLine {
  text-align: center;
  font-weight: 600;
  color: var(--accent-dark);
  margin-bottom: 14px;
}
.question-card.solved { border-color: var(--right); }
.q-num {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  border-radius: 999px;
  width: 26px;
  height: 26px;
  line-height: 26px;
  text-align: center;
  margin-right: 8px;
}
audio {
  display: block;
  width: 100%;
  max-width: 320px;
  margin: 10px 0 14px;
}
.word-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.word-btn {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 8px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: #f7fafc;
  cursor: pointer;
}
.word-btn:hover { background: #eaf2f7; }
.word-btn.chosen-right { border-color: var(--right); background: #e9f7ee; color: var(--right); font-weight: 700; }
.word-btn.chosen-wrong { border-color: var(--wrong); background: #fbecea; color: var(--wrong); }
.feedback { min-height: 1.3em; font-weight: 600; }
.feedback.right { color: var(--right); }
.feedback.wrong { color: var(--wrong); }
.feedback mark { background: #cdeedc; color: var(--right); padding: 0 2px; border-radius: 3px; }

.nav-buttons { text-align: center; margin-top: 10px; }
button.nav {
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 20px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  margin: 4px 6px;
}
button.nav:hover { background: var(--accent-dark); }
button.nav.secondary { background: #fff; color: var(--accent-dark); }
button.nav.secondary:hover { background: #eaf2f7; }

details.help {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 16px;
  margin-bottom: 14px;
  color: var(--ink-dim);
}
details.help summary { cursor: pointer; color: var(--ink); font-weight: 700; }

footer {
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-dim);
  margin-top: 20px;
}
footer a { color: var(--accent-dark); }