/**
 * Slide Reader - 縦スナップスクロール表示
 *
 * @package Repository_One
 */

/* ─── Container ─── */
.slide-reader {
  height: 100vh;
  overflow-y: scroll;
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
  position: relative;
}

/* ─── Each Slide ─── */
.slide-reader__slide {
  min-height: 100vh;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 40px 40px;
  box-sizing: border-box;
  max-width: 800px;
  margin: 0 auto;
}

.slide-reader__slide--intro {
  justify-content: flex-start;
  padding-top: 60px;
}

.slide-reader__slide h2 {
  font-size: var(--font-size-3xl, 28px);
  margin-bottom: var(--spacing-lg, 24px);
  padding-bottom: var(--spacing-sm, 8px);
  border-bottom: 2px solid var(--color-secondary, #c8102e);
}

.slide-reader__slide p,
.slide-reader__slide ul,
.slide-reader__slide ol,
.slide-reader__slide blockquote,
.slide-reader__slide figure {
  font-size: var(--font-size-lg, 18px);
  line-height: 1.9;
}

.slide-reader__slide img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-md, 4px);
}

/* スライド内コンテンツが長い場合のスクロール */
.slide-reader__slide-inner {
  overflow-y: auto;
  max-height: calc(100vh - 120px);
  padding-right: 8px;
}

.slide-reader__slide-inner::-webkit-scrollbar {
  width: 4px;
}

.slide-reader__slide-inner::-webkit-scrollbar-thumb {
  background: var(--color-border, #e0e0e0);
  border-radius: 2px;
}

/* ─── Dot Navigation ─── */
.slide-reader__nav {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 100;
}

.slide-reader__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-border, #e0e0e0);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base, 250ms) ease;
  position: relative;
  padding: 0;
}

.slide-reader__dot:hover {
  background: var(--color-text-secondary, #666);
  transform: scale(1.3);
}

.slide-reader__dot.is-active {
  background: var(--color-secondary, #c8102e);
  transform: scale(1.3);
}

/* Tooltip (section name) */
.slide-reader__dot::before {
  content: attr(data-label);
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-primary, #1a1a1a);
  color: #fff;
  padding: 4px 12px;
  border-radius: var(--border-radius-md, 4px);
  font-size: var(--font-size-sm, 14px);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast, 150ms) ease;
  font-family: var(--font-sans, 'Noto Sans JP', sans-serif);
}

.slide-reader__dot:hover::before {
  opacity: 1;
}

/* ─── Progress Bar ─── */
.slide-reader__progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--color-surface, #f8f8f8);
  z-index: 101;
}

.slide-reader__progress-bar {
  height: 100%;
  background: var(--color-secondary, #c8102e);
  width: 0;
  transition: width var(--transition-base, 250ms) ease;
}

/* ─── Exit Button ─── */
.slide-reader__exit {
  position: fixed;
  top: 16px;
  right: 24px;
  z-index: 102;
  background: var(--color-primary, #1a1a1a);
  color: #fff;
  border: none;
  padding: 8px 16px;
  border-radius: var(--border-radius-md, 4px);
  font-size: var(--font-size-sm, 14px);
  cursor: pointer;
  font-family: var(--font-sans, 'Noto Sans JP', sans-serif);
  transition: opacity var(--transition-fast, 150ms) ease;
  opacity: 0.7;
}

.slide-reader__exit:hover {
  opacity: 1;
}

/* ─── Normal mode (after exit) ─── */
.slide-reader--normal .slide-reader__slide {
  min-height: auto;
  padding: 0;
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .slide-reader__slide {
    padding: 60px 20px 20px;
  }

  .slide-reader__nav {
    right: 8px;
    gap: 8px;
  }

  .slide-reader__dot {
    width: 8px;
    height: 8px;
  }

  .slide-reader__dot::before {
    display: none;
  }

  .slide-reader__exit {
    right: 8px;
    padding: 6px 12px;
    font-size: 12px;
  }
}