/* * ========================================
 * CSS設計
 * ========================================
 */
:root {
    --primary: #6366F1;
    --primary-light: #818CF8;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --bg: #0F172A;
    --card: #1E293B;
    --card-hover: #334155;
    --text: #F8FAFC;
    --text-sub: #94A3B8;
    --border: #334155;
}

/* ライトテーマ */
[data-theme="light"] {
    --primary: #4F46E5;
    --primary-light: #6366F1;
    --success: #059669;
    --warning: #D97706;
    --danger: #DC2626;
    --bg: #F8FAFC;
    --card: #FFFFFF;
    --card-hover: #F1F5F9;
    --text: #1E293B;
    --text-sub: #64748B;
    --border: #E2E8F0;
}

/* 高コントラストテーマ */
[data-theme="high-contrast"] {
    --primary: #00FF00;
    --primary-light: #00FF00;
    --success: #00FF00;
    --warning: #FFFF00;
    --danger: #FF0000;
    --bg: #000000;
    --card: #1A1A1A;
    --card-hover: #333333;
    --text: #FFFF00;
    --text-sub: #CCCCCC;
    --border: #FFFF00;
}

/* 高コントラスト時のグラデーション無効化 */
[data-theme="high-contrast"] header h1 {
    background: none;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: var(--primary);
}

/* 高コントラスト時のタイマー色 */
[data-theme="high-contrast"] .time-value {
    color: #00FFFF !important;
}

[data-theme="high-contrast"] .time-value.warning {
    color: #FFFF00 !important;
}

[data-theme="high-contrast"] .time-value.danger {
    color: #FF0000 !important;
}

[data-theme="high-contrast"] .time-value.stopwatch {
    color: #00FF00 !important;
}

/* ライトテーマ時のタイマー色調整 */
[data-theme="light"] .time-value {
    color: #3B82F6;
}

[data-theme="light"] .time-value.stopwatch {
    color: #059669;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', sans-serif;
    background: var(--bg);
    color: var(--text);
    height: 100vh;
    height: 100dvh; /* モバイルSafari対策 */
    display: flex;
    flex-direction: column;
    overflow: hidden;
    user-select: none;
}

/* ヘッダー */
header {
    height: 60px;
    padding: 0 24px;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0; /* ヘッダーが縮まないように */
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px; /* 追加: 要素間の間隔を均等にする */
}

header h1 {
    font-size: 1.2rem;
    background: linear-gradient(90deg, #60A5FA, #A78BFA);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    /* margin-right: 16px; 削除: gapを使用するため不要 */
}

/* モード切替タブ (Phase 3 追加) */
.mode-tabs {
    display: flex;
    align-items: center; /* 追加: ボタンを垂直中央に揃える */
    background: var(--bg);
    border-radius: 8px;
    padding: 4px;
    /* margin-left: 16px; 削除: gapを使用するため不要 */
}

.mode-tab {
    background: transparent;
    border: none;
    color: var(--text-sub);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    /* 以下追加: ボタン内のテキスト位置を安定させる */
    display: flex;
    align-items: center;
    justify-content: center;
}

.mode-tab:hover {
    background: var(--card-hover);
}

.mode-tab.active {
    background: var(--primary);
    color: white;
}

/* プレゼン選択ドロップダウン */
.presentation-select select {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    min-width: 150px;
    max-width: 250px;
    /* margin-left: 16px; 削除: gapを使用するため不要 */
}

.presentation-select select:focus {
    outline: none;
    border-color: var(--primary);
}

.header-right {
    display: flex;
    gap: 8px;
}

.current-time {
    font-size: 1.5rem;
    font-family: 'SF Mono', 'Consolas', monospace;
    color: var(--text-sub);
}

.icon-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    width: 40px;
    height: 40px;
    border-radius: 8px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: var(--card-hover);
    border-color: var(--primary);
}

/* プレゼン画面ボタンのアクティブ状態 */
#presenterWindowBtn.active {
    background: rgba(16, 185, 129, 0.2);
    border-color: var(--success);
    color: var(--success);
}

/* メインエリア (発表モード) */
#presentMode {
    flex: 1;
    display: flex;
    gap: 16px;
    padding: 16px;
    overflow: hidden;
}

/* スライドエリア */
.slide-area {
    flex: 0 0 65%;       /* grow=0, shrink=0, basis=65% で固定 */
    max-width: 65%;      /* 最大幅も制限 */
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow: hidden;    /* はみ出し防止 */
}

.slide-main {
    flex: 1;
    background: var(--card);
    border-radius: 12px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.slide-main img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.slide-placeholder {
    text-align: center;
    color: var(--text-sub);
}

.placeholder-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: 16px;
}

.slide-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    flex-shrink: 0;
}

.nav-btn {
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.nav-btn:hover:not(:disabled) {
    background: var(--primary);
    border-color: var(--primary);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.slide-counter {
    font-size: 1rem;
    color: var(--text-sub);
    min-width: 80px;
    text-align: center;
}

.slide-thumbnails {
    height: 80px;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 8px;
    background: var(--card);
    border-radius: 8px;
    flex-shrink: 0;
}

.slide-thumbnails::-webkit-scrollbar {
    height: 6px;
}

.slide-thumbnails::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.thumbnail {
    height: 64px;
    width: auto;        /* アスペクト比を自動計算 */
    min-width: 64px;    /* 最小幅を確保 */
    max-width: 120px;   /* 最大幅を制限 */
    border-radius: 4px;
    border: 2px solid transparent;
    cursor: pointer;
    object-fit: contain;  /* cover → contain に変更 */
    flex-shrink: 0;
    transition: all 0.2s;
    background: var(--bg);  /* 余白部分の背景色 */
}

.thumbnail:hover {
    border-color: var(--primary-light);
}

.thumbnail.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.3);
}

/* サイドバー (Phase 3 修正: 比率分割) */
.sidebar {
    flex: 0 0 calc(35% - 16px);
    max-width: calc(35% - 16px);
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 280px;
    overflow: hidden;
}

/* 台本エリア - 比率で高さを決定 */
.script-area {
    flex: 3;              /* 変更: 1 → 3（台本:次スライド = 3:2）*/
    min-height: 150px;    /* 追加: 最小高さ */
    background: var(--card);
    border-radius: 12px;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.script-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.script-header h2 {
    font-size: 0.9rem;
    color: var(--primary-light);
}

.icon-btn.small {
    width: 32px;
    height: 32px;
    font-size: 1rem;
}

.script-content {
    flex: 1;
    padding: 16px;
    overflow-y: auto;
    font-size: 0.95rem;
    line-height: 1.8;
}

.script-content h1, .script-content h2, .script-content h3 {
    color: var(--primary-light);
    margin: 16px 0 8px 0;
}

.script-content h1:first-child,
.script-content h2:first-child,
.script-content h3:first-child {
    margin-top: 0;
}

.script-content ul, .script-content ol {
    padding-left: 24px;
}

.script-content li {
    margin: 4px 0;
}

.script-content strong {
    color: var(--warning);
}

.script-placeholder {
    color: var(--text-sub);
    font-style: italic;
}

/* 次スライドエリア - 比率で高さを決定 */
.next-slide-area {
    flex: 2;              /* 変更: flex: 2 */
    min-height: 120px;    /* 追加: 最小高さ */
    max-height: 250px;    /* 追加: 最大高さ */
    background: var(--card);
    border-radius: 12px;
    border: 1px solid var(--border);
    padding: 12px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.next-slide-area h3 {
    font-size: 0.8rem;
    color: var(--text-sub);
    margin-bottom: 8px;
    flex-shrink: 0;
}

.next-slide-preview {
    flex: 1;
    background: var(--bg);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    min-height: 0;
}

.next-slide-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.preview-placeholder {
    color: var(--text-sub);
    font-size: 1.5rem;
}

/* 編集モード (Phase 3 追加) */
.edit-mode {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
}

.edit-container {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.edit-section {
    background: var(--card);
    border-radius: 12px;
    border: 1px solid var(--border);
    padding: 20px;
}

.edit-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.edit-section-header h2 {
    font-size: 1rem;
    color: var(--primary-light);
}

.script-format-hint {
    font-size: 0.8rem;
    color: var(--text-sub);
}

/* セクションリスト (Phase 4.5 Updated) */
.section-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.section-item {
    display: flex;
    flex-direction: column; /* Phase 4.5: column layout */
    gap: 8px;
    padding: 12px;
    background: var(--bg);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.section-main-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-item.active {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.section-number {
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
    flex-shrink: 0;
}

.section-name {
    flex: 1;
    padding: 8px 12px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.95rem;
}

.section-name:focus {
    outline: none;
    border-color: var(--primary);
}

/* スライド範囲入力 (Phase 4.5) */
.section-slides {
    display: flex;
    align-items: center;
    gap: 4px;
}

.slides-label {
    font-size: 0.8rem;
    color: var(--text-sub);
    margin-right: 4px;
}

.section-slides input {
    width: 45px;
    padding: 6px 4px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-size: 0.9rem;
    text-align: center;
}

.section-slides input:focus {
    outline: none;
    border-color: var(--primary);
}

.section-slides input::placeholder {
    color: var(--text-sub);
}

.slides-separator {
    color: var(--text-sub);
    font-size: 0.9rem;
}

.section-duration {
    display: flex;
    align-items: center;
    gap: 4px;
}

.section-duration input {
    width: 50px;
    padding: 8px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.95rem;
    text-align: center;
}

.section-duration input:focus {
    outline: none;
    border-color: var(--primary);
}

.section-duration span {
    color: var(--text-sub);
    font-size: 0.85rem;
}

.section-controls {
    display: flex;
    gap: 4px;
}

.section-controls button {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 4px;
    background: var(--card-hover);
    color: var(--text-sub);
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.section-controls button:hover {
    background: var(--primary);
    color: white;
}

.section-controls button.delete:hover {
    background: var(--danger);
}

/* セクション台本ボタン (Phase 4.5) */
.section-script-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-left: 36px;
}

.section-script-btn {
    background: transparent;
    border: 1px dashed var(--border);
    border-radius: 6px;
    color: var(--text-sub);
    padding: 6px 12px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

.section-script-btn:hover {
    border-color: var(--primary);
    color: var(--primary-light);
    background: rgba(99, 102, 241, 0.1);
}

.section-script-btn.has-script {
    border-style: solid;
    border-color: var(--success);
    color: var(--success);
}

.section-script-status {
    font-size: 0.75rem;
    color: var(--text-sub);
    font-style: italic;
}

.section-script-status.active {
    color: var(--success);
    font-style: normal;
}

/* スライド範囲重複警告 (Phase 4.5 Bugfix) */
.slide-range-warning {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 12px;
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid var(--warning);
    border-radius: 8px;
    margin-top: 12px;
    color: var(--warning);
    font-size: 0.85rem;
    line-height: 1.5;
}

.slide-range-warning .warning-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.slide-range-warning .warning-text {
    flex: 1;
    white-space: pre-wrap;
}

/* 高コントラストテーマ対応 */
[data-theme="high-contrast"] .slide-range-warning {
    background: rgba(255, 255, 0, 0.1);
    border-color: #FFFF00;
    color: #FFFF00;
}

.section-total {
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    text-align: right;
    font-size: 1rem;
    color: var(--text);
}

.section-total span {
    font-weight: bold;
    color: var(--primary-light);
    font-size: 1.2rem;
}

/* 台本エディタ */
.script-edit {
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* 台本モード切替 (Phase 4.5) */
.script-mode-selector {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
    padding: 12px;
    background: var(--bg);
    border-radius: 8px;
}

.script-mode-option {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s;
}

.script-mode-option:hover {
    background: var(--card-hover);
}

.script-mode-option input[type="radio"] {
    margin-top: 3px;
    accent-color: var(--primary);
}

.script-mode-option .mode-label {
    display: block;
    font-weight: bold;
    color: var(--text);
    margin-bottom: 2px;
}

.script-mode-option .mode-desc {
    display: block;
    font-size: 0.8rem;
    color: var(--text-sub);
}

/* セクション台本案内 (Phase 4.5) */
.section-script-guide {
    padding: 20px;
    background: var(--bg);
    border-radius: 8px;
    text-align: center;
    color: var(--text-sub);
}

.section-script-guide p {
    margin-bottom: 8px;
}

.section-script-guide .guide-note {
    font-size: 0.85rem;
    color: var(--warning);
}

/* セクション台本モーダル (Phase 4.5) */
.section-script-info {
    padding: 8px 12px;
    background: var(--bg);
    border-radius: 6px;
    margin-bottom: 12px;
    font-size: 0.9rem;
    color: var(--text-sub);
}

#sectionScriptTextarea {
    width: 100%;
    min-height: 250px;
    padding: 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.7;
    resize: vertical;
}

#sectionScriptTextarea:focus {
    outline: none;
    border-color: var(--primary);
}

#scriptEditor {
    flex: 1;
    min-height: 300px;
    padding: 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.8;
    font-family: 'SF Mono', 'Consolas', 'Hiragino Kaku Gothic ProN', monospace;
    resize: vertical;
}

#scriptEditor:focus {
    outline: none;
    border-color: var(--primary);
}

/* フッター */
footer {
    height: 100px;
    padding: 12px 24px;
    background: var(--card);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

/* セクション進捗 (Phase 3 追加) */
.section-progress {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 8px 16px;
    background: var(--bg);
    border-radius: 8px;
}

.current-section {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.section-label {
    font-size: 0.7rem;
    color: var(--text-sub);
}

.current-section .section-name {
    font-size: 1rem;
    font-weight: bold;
    color: var(--primary-light);
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.section-time {
    display: flex;
    align-items: baseline;
    gap: 4px;
    font-family: 'SF Mono', 'Consolas', monospace;
}

.section-elapsed {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--success);
}

.section-elapsed.over {
    color: var(--danger);
}

.section-separator {
    color: var(--text-sub);
}

.section-target {
    font-size: 0.9rem;
    color: var(--text-sub);
}

.section-nav {
    display: flex;
    gap: 4px;
}

.section-nav-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--card);
    color: var(--text);
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.section-nav-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
}

.section-nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.timer-section {
    display: flex;
    align-items: center;
    gap: 24px;
}

.timer-tabs {
    display: flex;
    background: var(--bg);
    border-radius: 8px;
    padding: 4px;
}

.timer-tab {
    background: transparent;
    border: none;
    color: var(--text-sub);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

.timer-tab.active {
    background: var(--primary);
    color: white;
}

.timer-settings {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-sub);
    font-size: 0.9rem;
}

.timer-settings input {
    width: 60px;
    padding: 6px 8px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 1rem;
    text-align: center;
}

.timer-display {
    min-width: 150px;
    text-align: center;
}

.time-value {
    font-size: 2.5rem;
    font-family: 'SF Mono', 'Consolas', monospace;
    font-weight: bold;
    color: #60A5FA;
}

.time-value.warning {
    color: #FBBF24;
}

.time-value.danger {
    color: #F87171;
    animation: blink 1s infinite;
}

.time-value.stopwatch {
    color: #34D399;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.timer-controls {
    display: flex;
    gap: 8px;
}

.control-btn {
    padding: 10px 20px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--card-hover);
    color: var(--text);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

.control-btn:hover {
    border-color: var(--primary);
}

.control-btn.primary {
    background: var(--primary);
    border-color: var(--primary);
}

.control-btn.primary:hover {
    background: var(--primary-light);
}

.control-btn.running {
    background: var(--danger);
    border-color: var(--danger);
}

.end-time {
    font-size: 0.85rem;
    color: var(--text-sub);
}

.sound-buttons {
    display: flex;
    gap: 12px;
}

.sound-btn {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.15s;
}

#bellBtn {
    background: linear-gradient(135deg, #60A5FA, #3B82F6);
}

#buzzerBtn {
    background: linear-gradient(135deg, #F87171, #EF4444);
}

.sound-btn:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

.sound-btn:active {
    transform: translateY(1px);
}

/* モーダル共通 */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--card);
    border-radius: 16px;
    width: 90%;
    max-width: 700px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.1rem;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-sub);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-body {
    flex: 1;
    padding: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* 台本編集モーダル固有 */
.modal-body textarea {
    width: 100%;
    height: 100%;
    min-height: 300px;
    padding: 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.6;
    font-family: 'SF Mono', 'Consolas', monospace;
    resize: none;
}

.modal-body textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.modal-btn {
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
}

.modal-btn.secondary {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

.modal-btn.primary {
    background: var(--primary);
    border: 1px solid var(--primary);
    color: white;
}

/* 設定モーダル */
.settings-modal {
    max-width: 600px;
}

.settings-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
}

.settings-tab {
    background: transparent;
    border: none;
    color: var(--text-sub);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.settings-tab:hover {
    background: var(--card-hover);
}

.settings-tab.active {
    background: var(--primary);
    color: white;
}

.settings-content {
    display: none;
    overflow-y: auto;
    flex: 1;
}

.settings-content.active {
    display: block;
}

.current-presentation {
    margin-bottom: 24px;
}

.current-presentation h3,
.presentation-list h3 {
    font-size: 0.9rem;
    color: var(--text-sub);
    margin-bottom: 12px;
}

.presentation-info {
    display: flex;
    gap: 12px;
    align-items: center;
}

.presentation-info input {
    flex: 1;
    padding: 10px 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 1rem;
}

.presentation-info input:focus {
    outline: none;
    border-color: var(--primary);
}

.btn-small {
    padding: 8px 12px;
    font-size: 0.85rem;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-small.danger {
    background: var(--danger);
    color: white;
}

.btn-small.danger:hover {
    filter: brightness(1.1);
}

.presentation-list ul {
    list-style: none;
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: 16px;
}

.presentation-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background: var(--bg);
    border-radius: 8px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.presentation-list li:hover {
    background: var(--card-hover);
}

.presentation-list li.active {
    border-left: 3px solid var(--primary);
}

.presentation-list .title {
    font-weight: 500;
}

.presentation-list .date {
    font-size: 0.8rem;
    color: var(--text-sub);
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    border: none;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn.primary {
    background: var(--primary);
    color: white;
}

.btn.primary:hover {
    background: var(--primary-light);
}

/* インポートエリア */
.import-area {
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 16px;
}

.import-area:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.import-area.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.2);
}

.import-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 12px;
}

.note {
    font-size: 0.85rem;
    color: var(--text-sub);
    margin: 12px 0;
}

/* 振り返りタブ (Phase 4 追加) */
.review-header {
    margin-bottom: 20px;
}

.review-header h3 {
    font-size: 1.1rem;
    color: var(--primary-light);
    margin-bottom: 8px;
}

.review-note {
    font-size: 0.85rem;
    color: var(--text-sub);
}

.review-summary {
    margin-bottom: 24px;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
}

.summary-item {
    background: var(--bg);
    padding: 12px;
    border-radius: 8px;
    text-align: center;
}

.summary-item.highlight {
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid var(--primary);
}

.summary-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-sub);
    margin-bottom: 4px;
}

.summary-value {
    display: block;
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--text);
    font-family: 'SF Mono', 'Consolas', monospace;
}

.summary-item.over .summary-value {
    color: var(--danger);
}

.summary-item.under .summary-value {
    color: var(--success);
}

/* セクション別テーブル */
.review-sections,
.review-slides {
    margin-bottom: 24px;
}

.review-sections h4,
.review-slides h4 {
    font-size: 0.9rem;
    color: var(--text-sub);
    margin-bottom: 12px;
}

.review-table {
    width: 100%;
    border-collapse: collapse;
}

.review-table th,
.review-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.review-table th {
    font-size: 0.8rem;
    color: var(--text-sub);
    font-weight: normal;
}

.review-table td {
    font-size: 0.9rem;
}

.review-table td:nth-child(2),
.review-table td:nth-child(3),
.review-table td:nth-child(4) {
    font-family: 'SF Mono', 'Consolas', monospace;
    text-align: right;
}

.review-table .over {
    color: var(--danger);
}

.review-table .under {
    color: var(--success);
}

/* スライドランキング */
.slide-ranking {
    list-style: none;
    padding: 0;
}

.slide-ranking li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    background: var(--bg);
    border-radius: 8px;
    margin-bottom: 8px;
}

.slide-ranking .rank {
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
    flex-shrink: 0;
}

.slide-ranking .rank.gold {
    background: linear-gradient(135deg, #F59E0B, #D97706);
}

.slide-ranking .rank.silver {
    background: linear-gradient(135deg, #94A3B8, #64748B);
}

.slide-ranking .rank.bronze {
    background: linear-gradient(135deg, #CD7F32, #A0522D);
}

.slide-ranking .slide-info {
    flex: 1;
}

.slide-ranking .slide-number {
    font-weight: bold;
    color: var(--text);
}

.slide-ranking .slide-time {
    font-family: 'SF Mono', 'Consolas', monospace;
    color: var(--primary-light);
}

/* アクションボタン */
.review-actions {
    display: flex;
    gap: 12px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

/* 使い方ガイドモーダル (Phase 4.5) */
.help-modal {
    max-width: 700px;
    max-height: 80vh;
}

.help-content {
    overflow-y: auto;
    max-height: 60vh;
}

.help-section {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.help-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.help-section h3 {
    font-size: 1rem;
    color: var(--primary-light);
    margin-bottom: 12px;
}

.help-section ol,
.help-section ul {
    padding-left: 20px;
    color: var(--text);
}

.help-section li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.help-section p {
    color: var(--text-sub);
    margin-bottom: 8px;
    line-height: 1.6;
}

/* ショートカット一覧 */
.shortcut-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 8px;
}

.shortcut-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    background: var(--bg);
    border-radius: 6px;
}

.shortcut-item kbd {
    background: var(--card-hover);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px 8px;
    font-family: 'SF Mono', 'Consolas', monospace;
    font-size: 0.85rem;
    color: var(--primary-light);
    min-width: 60px;
    text-align: center;
}

.shortcut-item span {
    color: var(--text-sub);
    font-size: 0.85rem;
}

/* PDF読み込み中インジケーター */
.loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    margin-top: 16px;
    color: var(--text);
    font-size: 0.9rem;
}

/* レスポンシブ（タブレット対応） */
@media (max-width: 1024px) {
    .slide-area {
        flex: 0 0 60%;
        max-width: 60%;
    }
    
    .sidebar {
        flex: 0 0 calc(40% - 16px);
        max-width: calc(40% - 16px);
        min-width: 250px;
    }
}

@media (max-width: 900px) {
    #presentMode {
        flex-direction: column;
    }
    
    .slide-area {
        flex: 0 0 auto;
        max-width: 100%;
        height: 50%;
    }
    
    .sidebar {
        flex: 1;
        max-width: 100%;
        min-width: auto;
    }
    
    .slide-thumbnails {
        height: 60px;
    }
    
    .thumbnail {
        height: 50px;
        min-width: 50px;
    }
    
    .section-progress {
        display: none;
    }
}

@media (max-width: 768px) {
    .mode-tabs {
        display: none;
    }
    
    .edit-container {
        padding: 0 8px;
    }
    
    /* Phase 4.5: セクションアイテムのレスポンシブ */
    .section-main-row {
        flex-wrap: wrap;
    }
    
    .section-slides {
        order: 2;
        flex: 1 1 100%;
        margin-top: 8px;
        padding-left: 36px;
    }
    
    .section-script-row {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .shortcut-grid {
        grid-template-columns: 1fr;
    }
    
    .section-name {
        flex: 1 1 100%;
        order: 1;
    }
    
    .section-number {
        order: 0;
    }
    
    .section-duration {
        order: 2;
    }
    
    .section-controls {
        order: 3;
    }
}

@media (max-height: 700px) {
    .script-area {
        flex: 2;
        min-height: 100px;
    }
    
    .next-slide-area {
        flex: 1;
        min-height: 80px;
        max-height: 150px;
    }
}

/* ドラッグ&ドロップ */
.slide-main.dragover {
    border: 2px dashed var(--primary);
    background: rgba(99, 102, 241, 0.1);
}