/* student-vocabulary.css — the student's Vocabulary tab on student-homework.html (§SB-12d).
 * Uses the page's own variables (student-homework.css). Every class is `svocab-`
 * prefixed. One column on phones, a grid of word cards on wider screens. */

.svocab { display: flex; flex-direction: column; gap: var(--space-md, 1rem); }
.svocab * { box-sizing: border-box; }
.svocab-intro { margin: 0; color: var(--text-light, #6b7280); font-size: 0.95rem; }
.svocab-error { margin: 0; color: var(--red-error, #dc2626); font-weight: 600; }
.svocab-empty { margin: 0; color: var(--text-light, #6b7280); }

.svocab-list {
  background: var(--white, #fff);
  border: 2px solid var(--gray-border, #e5e7eb);
  border-radius: var(--radius-md, 12px);
  overflow: hidden;
}
.svocab-list.is-open { border-color: var(--purple-primary, #6564b6); }

.svocab-list-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.9rem 1rem;
  border: 0;
  background: none;
  font: inherit;
  text-align: left;
  cursor: pointer;
  color: var(--text-dark, #111827);
}
.svocab-list-name { flex: 1; font-size: 1.1rem; font-weight: 600; }
.svocab-count {
  background: #eef2ff;
  color: #3730a3;
  border-radius: 999px;
  padding: 0.1rem 0.6rem;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}
.svocab-chevron { color: var(--text-light, #6b7280); transition: transform 0.2s ease; }
.svocab-list.is-open .svocab-chevron { transform: rotate(180deg); }
.svocab-list-head:focus-visible,
.svocab-play:focus-visible { outline: 2px solid #38bdf8; outline-offset: 2px; }

.svocab-words {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
  padding: 0 1rem 1rem;
}

.svocab-word {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
  border: 1px solid var(--gray-border, #e5e7eb);
  border-radius: 10px;
  background: #fafafa;
}
.svocab-picture {
  width: 4.5rem;
  height: 3.5rem;
  border-radius: 8px;
  overflow: hidden;
  background: #f3f4f6;
}
.svocab-picture img { width: 100%; height: 100%; object-fit: cover; display: block; }
.svocab-text { display: flex; flex-direction: column; gap: 0.15rem; min-width: 0; }
.svocab-english { font-weight: 700; font-size: 1.05rem; color: var(--text-dark, #111827); overflow-wrap: anywhere; }
.svocab-second { color: var(--text-light, #4b5563); font-size: 0.95rem; overflow-wrap: anywhere; }
/* §SB-16: a word's line breaks show (sentence starters, one per line) */
.svocab-english, .svocab-second { white-space: pre-line; }

.svocab-play {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 999px;
  border: 2px solid #a7f3d0;
  background: #ecfdf5;
  color: #047857;
  font-size: 1rem;
  cursor: pointer;
}
.svocab-play.is-playing { background: #047857; border-color: #047857; color: #fff; }

@media (min-width: 768px) {
  .svocab-words { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1200px) {
  .svocab-words { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}