/* ─────────────────────────────────────
   Structure Slides Styles
   生徒向けスライドビューア（モーダルオーバーレイ）
   ───────────────────────────────────── */

/* 起動バー */
.slides-launch-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  background: #f4eee0;
  border: 1px solid var(--gold);
  border-radius: 4px;
  margin-bottom: 16px;
}
.slides-launch-bar p {
  margin: 0;
  font-size: 13px;
  color: var(--dark);
}
.slides-launch-btn {
  background: var(--gold);
  color: #fff;
  border: none;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.slides-launch-btn:hover { background: #a17f30; }

/* 本文スクロール抑制 */
body.slides-open { overflow: hidden; }

/* オーバーレイ */
.slides-overlay {
  position: fixed;
  inset: 0;
  background: rgba(42, 33, 24, 0.78);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

/* モーダル枠 */
.slides-modal {
  background: var(--off-white);
  border-radius: 8px;
  width: 100%;
  max-width: 820px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
  overflow: hidden;
}

/* ヘッダ */
.sl-header {
  background: var(--burgundy);
  color: #fff;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
#sl-title {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.08em;
  font-weight: 600;
  flex: 1;
}
#sl-pos {
  font-size: 12px;
  color: var(--gold);
  font-weight: 700;
  white-space: nowrap;
}
#sl-close {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: 3px;
  width: 28px;
  height: 28px;
  font-size: 16px;
  cursor: pointer;
  line-height: 1;
}
#sl-close:hover { background: rgba(255,255,255,0.15); }

/* 進捗バー */
.sl-progress {
  height: 4px;
  background: rgba(184, 150, 62, 0.2);
}
.sl-progress-fill {
  height: 100%;
  background: var(--gold);
  width: 0%;
  transition: width .3s;
}

/* 本体 */
.sl-content {
  padding: 28px 32px;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* トークン表示 */
.sl-tokens {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 20px;
  line-height: 2.2;
  text-align: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 20px 16px;
}
.sl-tok {
  display: inline-block;
  padding: 2px 4px;
  border-radius: 3px;
  position: relative;
  color: var(--ink);
  transition: background .3s;
}
.sl-tok-v { background: #ede5d8; border-bottom: 3px solid var(--gold); }
.sl-tok-s { background: #f4e8e0; border-bottom: 3px solid #c89f7a; }
.sl-tok-o { background: #e8edf4; border-bottom: 3px solid #6b7fa0; }
.sl-tok-c { background: #e8f4ed; border-bottom: 3px solid #6ba07f; }
.sl-tok-m { background: #f4f0e8; border-bottom: 3px solid var(--gray); }
.sl-tok-sub { background: #f4e8ed; border-bottom: 3px dashed var(--burgundy); }

.sl-tok-label {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  font-weight: 700;
  color: var(--gray);
  letter-spacing: 0.05em;
}

/* ナレーション本文 */
.sl-body {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  border-radius: 4px;
  padding: 20px 22px;
  font-size: 15px;
  line-height: 1.8;
}
.sl-narration {
  margin: 0 0 8px;
  color: var(--ink);
}
.sl-narration:last-child { margin-bottom: 0; }
.sl-em {
  color: var(--burgundy);
  font-family: Georgia, serif;
  font-size: 1.05em;
}
.sl-hint {
  font-size: 13px;
  color: var(--gray);
  padding-top: 8px;
  border-top: 1px dashed var(--border);
  margin-top: 10px;
}
.sl-mline {
  display: block;
  margin: 6px 0;
  padding-left: 12px;
  border-left: 2px solid var(--gold);
}
.sl-keypoints {
  margin: 0;
  padding-left: 20px;
}
.sl-keypoints li {
  margin: 6px 0;
  font-size: 14px;
}
.sl-translation {
  font-size: 17px;
  font-weight: 600;
  color: var(--dark);
  margin: 0 0 8px;
  line-height: 1.7;
}

/* フッタ（ナビ） */
.sl-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  background: #fff;
  gap: 8px;
}
.sl-nav-btn {
  background: var(--burgundy);
  color: #fff;
  border: none;
  padding: 8px 22px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  letter-spacing: 0.04em;
}
.sl-nav-btn:hover:not(:disabled) { background: var(--dark); }
.sl-nav-btn:disabled {
  background: var(--gray);
  cursor: not-allowed;
  opacity: 0.6;
}
.sl-reset-btn {
  background: transparent;
  color: var(--gray);
  border: 1px solid var(--border);
  font-size: 12px;
  padding: 6px 14px;
  border-radius: 3px;
  cursor: pointer;
}
.sl-reset-btn:hover {
  color: var(--burgundy);
  border-color: var(--burgundy);
}

.sl-kbd-hint {
  font-size: 11px;
  color: var(--gray);
  text-align: center;
  padding: 4px;
}

@media (max-width: 640px) {
  .slides-overlay { padding: 8px; }
  .sl-content { padding: 18px 16px; gap: 14px; }
  .sl-tokens { font-size: 16px; line-height: 2; padding: 14px 8px; }
  .sl-body { padding: 14px 16px; font-size: 14px; }
  .sl-translation { font-size: 15px; }
  .sl-header { padding: 10px 14px; }
  #sl-title { font-size: 12px; }
  .sl-footer { padding: 10px 14px; }
  .sl-nav-btn { padding: 7px 16px; font-size: 13px; }
  .sl-kbd-hint { display: none; }
}

.slides-overlay[hidden] { display: none !important; }