/* ========================================
   進捗バーパネル
======================================== */

/* =====================================
[REF]
- HTML: #progressBarPanel.progress-bar-panel
- JS: assets/ui.js（visible クラス付与）
- STATE: なし
- LAYER: z-index（--z-progress-panel）
- SPLIT: GROUP
===================================== */
.progress-bar-panel {
  position: fixed;
  bottom: -100px;
  left: 0;
  right: 0;
  height: 80px;
  background: rgba(17, 24, 39, 0.95);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 2rem;
  transition: bottom 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: var(--z-progress-panel);
}

/* =====================================
[REF]
- HTML: [data-theme="light"] .progress-bar-panel
- JS: data-theme の切替（JSで操作される前提）
- STATE: [data-theme="light"]
- LAYER: なし
- SPLIT: LAST
===================================== */
[data-theme="light"] .progress-bar-panel {
  background: rgba(255, 255, 255, 0.95);
  border-top-color: var(--border);
}

/* =====================================
[REF]
- HTML: #progressBarPanel.progress-bar-panel.visible
- JS: assets/ui.js（visible クラス付与/解除）
- STATE: .visible
- LAYER: なし
- SPLIT: LAST
===================================== */
.progress-bar-panel.visible {
  bottom: 0;
}

/* =====================================
[REF]
- HTML: #progressBarPanel .progress-container
- JS: なし
- STATE: なし
- LAYER: なし
- SPLIT: GROUP
===================================== */
.progress-container {
  width: 100%;
  max-width: 1000px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* =====================================
[REF]
- HTML: #progressBarPanel .progress-bar-wrapper
- JS: assets/ui.js（進捗更新）
- STATE: なし
- LAYER: なし
- SPLIT: GROUP
===================================== */
.progress-bar-wrapper {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
}

/* =====================================
[REF]
- HTML: #progressBarPanel .progress-arrow
- JS: assets/app.js（ページ移動）
- STATE: なし
- LAYER: なし
- SPLIT: GROUP
===================================== */
.progress-arrow {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  cursor: pointer;
  font-size: 0.8rem;
  padding: 0;
  transition: all 0.2s ease;
}

/* =====================================
[REF]
- HTML: #progressBarPanel .progress-arrow:hover
- JS: なし
- STATE: :hover
- LAYER: なし
- SPLIT: LAST
===================================== */
.progress-arrow:hover {
  background: rgba(139, 92, 246, 0.2);
  border-color: var(--accent);
}

/* =====================================
[REF]
- HTML: #progressBarPanel .progress-track
- JS: assets/ui.js（進捗更新）
- STATE: なし
- LAYER: なし
- SPLIT: GROUP
===================================== */
.progress-track {
  flex: 1;
  position: relative;
  height: 12px;
  /* 濁E��グレーで白背景でも確実に視認可能 */
  background: #374151;
  border: 2px solid #1f2937;
  border-radius: 999px;
  cursor: pointer;
  box-shadow:
    inset 0 2px 4px rgba(0, 0, 0, 0.4),
    0 2px 4px rgba(0, 0, 0, 0.15);
}

/* =====================================
[REF]
- HTML: [data-theme="light"] .progress-track
- JS: data-theme の切替（JSで操作される前提）
- STATE: [data-theme="light"]
- LAYER: なし
- SPLIT: LAST
===================================== */
[data-theme="light"] .progress-track {
  background: #e2e8f0;
  /* slate-200 */
  border-color: #cbd5e1;
  /* slate-300 */
}

/* =====================================
[REF]
- HTML: [data-theme="light"] .current-page-input
- JS: data-theme の切替（JSで操作される前提）
- STATE: [data-theme="light"]
- LAYER: なし
- SPLIT: LAST
===================================== */
[data-theme="light"] .current-page-input {
  background: #ffffff;
  border-color: #d1d5db;
  color: #0f172a;
}

/* =====================================
[REF]
- HTML: .progress-bar-wrapper.rtl-mode
- JS: 読書方向の切替（assets/constants.js で class 定義）
- STATE: .rtl-mode
- LAYER: なし
- SPLIT: LAST
===================================== */
/* 追加: RTLモード時に進捗バー全体（ボタン・トラック含む）を左右反転 */
.progress-bar-wrapper.rtl-mode {
  transform: scaleX(-1);
}

/* =====================================
[REF]
- HTML: #progressBarPanel .progress-fill
- JS: assets/ui.js（進捗更新）
- STATE: なし
- LAYER: なし
- SPLIT: GROUP
===================================== */
.progress-fill {
  position: absolute;
  left: 2px;
  top: 2px;
  bottom: 2px;
  /* 鮮めE��なグラチE�Eションで視認性向丁E*/
  background: linear-gradient(90deg, #8b5cf6, #a855f7);
  border-radius: 999px;
  transition: width 0.2s ease;
  box-shadow: 0 0 8px rgba(139, 92, 246, 0.5);
}

/* =====================================
[REF]
- HTML: #progressBarPanel .progress-thumb
- JS: assets/ui.js（進捗更新）
- STATE: なし
- LAYER: なし
- SPLIT: GROUP
===================================== */
.progress-thumb {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 24px;
  height: 24px;
  /* 白背景でも黒背景でも見えるツマミ */
  background: linear-gradient(135deg, #f8fafc, #e2e8f0);
  border: 3px solid #1f2937;
  border-radius: 50%;
  cursor: grab;
  box-shadow:
    0 2px 8px rgba(0, 0, 0, 0.3),
    inset 0 1px 2px rgba(255, 255, 255, 0.8);
  transition: transform 0.2s ease;
}

/* =====================================
[REF]
- HTML: #progressBarPanel .progress-thumb:hover
- JS: なし
- STATE: :hover
- LAYER: なし
- SPLIT: LAST
===================================== */
.progress-thumb:hover {
  transform: translate(-50%, -50%) scale(1.2);
}

/* =====================================
[REF]
- HTML: #progressBarPanel .progress-thumb.dragging
- JS: assets/ui.js（ドラッグ状態で class 付与）
- STATE: .dragging
- LAYER: なし
- SPLIT: LAST
===================================== */
.progress-thumb.dragging {
  cursor: grabbing;
  transform: translate(-50%, -50%) scale(1.3);
}

/* =====================================
[REF]
- HTML: #progressBarPanel .progress-info
- JS: なし
- STATE: なし
- LAYER: なし
- SPLIT: GROUP
===================================== */
.progress-info {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* =====================================
[REF]
- HTML: #progressBarPanel .page-numbers
- JS: assets/ui.js（ページ番号更新）
- STATE: なし
- LAYER: なし
- SPLIT: GROUP
===================================== */
.page-numbers {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  color: var(--text);
}

/* =====================================
[REF]
- HTML: #currentPageInput.current-page-input
- JS: assets/ui.js（ページ番号更新）
- STATE: なし
- LAYER: なし
- SPLIT: GROUP
===================================== */
.current-page-input {
  width: 60px;
  padding: 0.25rem 0.5rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  text-align: center;
  font-size: 1rem;
}

/* =====================================
[REF]
- HTML: #currentPageInput.current-page-input:focus
- JS: なし
- STATE: :focus
- LAYER: なし
- SPLIT: LAST
===================================== */
.current-page-input:focus {
  outline: none;
  border-color: var(--accent);
}

/* =====================================
[REF]
- HTML: #progressBarPanel .total-pages
- JS: assets/ui.js（ページ番号更新）
- STATE: なし
- LAYER: なし
- SPLIT: GROUP
===================================== */
.total-pages {
  color: var(--muted);
}

/* =====================================
[REF]
- HTML: .bookmark-marker（進捗バー上のしおりマーカー）
- JS: assets/js/ui/renderers.js（しおり生成）
- STATE: なし
- LAYER: z-index（--z-bookmark-marker）
- SPLIT: GROUP
===================================== */
/* しおり�Eーカー�E�進捗バー上！E*/
.bookmark-marker {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 12px;
  height: 12px;
  background: var(--bookmark-marker-default);
  border: 2px solid var(--bookmark-marker-border);
  border-radius: 50%;
  cursor: pointer;
  padding: 0;
  appearance: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  z-index: var(--z-bookmark-marker);
}

/* =====================================
[REF]
- HTML: .bookmark-marker:hover
- JS: なし
- STATE: :hover
- LAYER: なし
- SPLIT: LAST
===================================== */
.bookmark-marker:hover {
  transform: translate(-50%, -50%) scale(1.3);
}