/* ============================================================
   easy-minimap-maker - timeline.css
   動画編集ソフト風 横長タイムラインエディタ
   ============================================================ */

.workspace-bottom {
    height: 240px;
    min-height: 180px;
    max-height: 45vh;
    background: #181b22;
    border-top: 2px solid #2d3340;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    user-select: none;
    position: relative;
    z-index: 5;
}

/* タイムラインツールバー */
.timeline-toolbar {
    height: 42px;
    background: #20242e;
    border-bottom: 1px solid #2d3340;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
    gap: 12px;
    flex-shrink: 0;
}

.timeline-tools-left {
    display: flex;
    align-items: center;
    gap: 4px;
}

.timeline-tools-center {
    display: flex;
    align-items: center;
    gap: 8px;
}

.timeline-tools-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ツールボタングループ (矢印、前方選択、後方選択、範囲選択) */
.tool-btn-group {
    display: flex;
    background: #14171d;
    border: 1px solid #2d3340;
    border-radius: var(--radius-sm);
    padding: 2px;
    gap: 2px;
}

.btn-tool {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 5px 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    position: relative;
}

.btn-tool:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.08);
}

.btn-tool.active {
    background: var(--primary-color);
    color: #ffffff;
}

.btn-tool svg {
    width: 15px;
    height: 15px;
}

/* 一時停止ボタン（通常時は「一時停止を開始」、開始後は「一時停止を終了」でハイライト） */
.btn-pause-mode {
    background: #2d3340;
    color: #e2e8f0;
    border: 1px solid #475569;
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.btn-pause-mode:hover:not(:disabled) {
    background: #3a4252;
}

.btn-pause-mode:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.btn-pause-mode.active-pausing {
    background: #dc2626;
    color: #ffffff;
    border-color: #ef4444;
    animation: pause-btn-blink 1.5s infinite;
}

@keyframes pause-btn-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.75; }
}

/* 一時停止作成中のタイムライン操作ロック */
.track-lane.pausing-locked {
    cursor: default !important;
}

.track-lane.pausing-locked .kf-marker {
    cursor: not-allowed !important;
    opacity: 0.65;
}

.track-lane.pausing-locked .timeline-pause-band {
    cursor: not-allowed !important;
    opacity: 0.65;
}

.btn-tool:disabled {
    opacity: 0.35 !important;
    cursor: not-allowed !important;
}

.btn-kf-nav:disabled {
    opacity: 0.35 !important;
    cursor: not-allowed !important;
}

/* タイムラインズームスライダー */
.timeline-zoom-control {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    color: var(--text-muted);
}

.zoom-slider {
    width: 90px;
    height: 4px;
    -webkit-appearance: none;
    background: #2d3340;
    border-radius: 2px;
    outline: none;
}

.zoom-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #60a5fa;
    cursor: pointer;
}

/* タイムラインスクロール・トラックスペース */
.timeline-viewport {
    flex: 1;
    overflow-x: auto;
    overflow-y: hidden;
    position: relative;
    background: #14171e;
    cursor: default;
}

.timeline-content {
    height: 100%;
    position: relative;
    min-width: 100%;
}

/* 時間ルーラー (Time Ruler) */
.timeline-ruler {
    height: 28px;
    background: #1a1e27;
    border-bottom: 1px solid #2d3340;
    position: relative;
    width: 100%;
    cursor: pointer;
    touch-action: none; /* スマホでのタッチスクロール競合を防止 */
}

.ruler-ticks-canvas {
    position: sticky;
    top: 0;
    left: 0;
    height: 100%;
    pointer-events: none;
    display: block;
}

/* 再生ヘッド (Playhead) */
.playhead-container {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    z-index: 50;
    pointer-events: none;
    transform: translateX(0px);
}

.playhead-head {
    position: absolute;
    top: 0;
    left: -8px;
    width: 17px;
    height: 18px;
    background: #ef4444;
    clip-path: polygon(0% 0%, 100% 0%, 100% 60%, 50% 100%, 0% 60%);
    cursor: ew-resize;
    pointer-events: auto;
    z-index: 52;
    touch-action: none; /* スマホでのタッチスクロール競合を防止 */
}

/* タップ・ドラッグ用の判定エリアを上下左右に拡張 */
.playhead-head::after {
    content: '';
    position: absolute;
    top: -8px;
    bottom: -16px;
    left: -14px;
    right: -14px;
    cursor: ew-resize;
}

.playhead-line {
    position: absolute;
    top: 16px;
    bottom: 0;
    left: 0;
    width: 2px;
    background: #ef4444;
    pointer-events: none;
    z-index: 51;
}

/* キーフレームトラック */
.timeline-track-lane {
    position: relative;
    height: calc(100% - 28px);
    width: 100%;
    background: #14171e;
}

.track-grid-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* 一時停止区間帯 (Pause Band) */
.timeline-pause-band {
    position: absolute;
    top: 15%;
    height: 70%;
    background: repeating-linear-gradient(
        -45deg,
        rgba(239, 68, 68, 0.25),
        rgba(239, 68, 68, 0.25) 8px,
        rgba(220, 38, 38, 0.45) 8px,
        rgba(220, 38, 38, 0.45) 16px
    );
    border: 1px solid #ef4444;
    border-radius: var(--radius-sm);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fca5a5;
    font-size: 10px;
    font-weight: 700;
    overflow: hidden;
    white-space: nowrap;
    pointer-events: auto;
    cursor: pointer;
}

/* キーフレームマーカー (Keyframe Marker) */
.kf-marker {
    position: absolute;
    top: 50%;
    width: 16px;
    height: 16px;
    margin-left: -8px;
    margin-top: -8px;
    background: #3b82f6;
    border: 2px solid #ffffff;
    border-radius: 2px;
    transform: rotate(45deg);
    cursor: pointer;
    z-index: 20;
    touch-action: none; /* スマホでのタッチスクロール競合を防止 */
    transition: transform 0.1s ease, background 0.1s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
}

.kf-marker:hover {
    background: #60a5fa;
    transform: rotate(45deg) scale(1.25);
}

.kf-marker.selected {
    background: #f59e0b;
    border-color: #ffffff;
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.9);
    transform: rotate(45deg) scale(1.3);
}

.kf-marker.pause-marker {
    background: #ef4444;
}

.kf-marker.pause-marker.selected {
    background: #f97316;
}

/* 範囲選択マーキー矩形 (Marquee Selection Box) */
.timeline-marquee-box {
    position: absolute;
    border: 1px dashed #60a5fa;
    background: rgba(59, 130, 246, 0.2);
    pointer-events: none;
    z-index: 40;
    display: none;
}

/* キーフレーム情報ポップオーバー・ツールチップ */
.kf-tooltip {
    position: absolute;
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid #334155;
    color: #f8fafc;
    font-size: 11px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    pointer-events: none;
    z-index: 100;
    white-space: nowrap;
    transform: translate(-50%, -130%);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}



/* デスクトップ表示での Undo / Redo ボタンの高さ最適化 (他ボタンと30pxに統一) */
.timeline-toolbar #btnUndo,
.timeline-toolbar #btnRedo {
    height: 30px;
    min-height: 30px;
    min-width: 32px;
    padding: 0 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #2d3340;
    color: #e2e8f0;
    border: 1px solid #475569;
    border-radius: var(--radius-sm);
    box-sizing: border-box;
    cursor: pointer;
    transition: var(--transition);
}

.timeline-toolbar #btnUndo:hover:not(:disabled),
.timeline-toolbar #btnRedo:hover:not(:disabled) {
    background: #3a4252;
    color: #ffffff;
    border-color: #64748b;
}

.timeline-toolbar #btnUndo:disabled,
.timeline-toolbar #btnRedo:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.timeline-toolbar #btnUndo svg,
.timeline-toolbar #btnRedo svg {
    width: 14px;
    height: 14px;
}

/* タイムラインツールバー: キーフレーム削除ボタン (警告アクションとして赤色ベース) */
.btn-delete-kf {
    height: 30px;
    min-height: 30px;
    padding: 0 10px;
    font-size: 12px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: #dc2626;
    color: #ffffff;
    border: 1px solid #ef4444;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
}

.btn-delete-kf:hover:not(:disabled) {
    background: #b91c1c;
    color: #ffffff;
    border-color: #dc2626;
}

.btn-delete-kf:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    background: #dc2626;
    color: #ffffff;
    border-color: #ef4444;
}

.btn-delete-kf svg {
    width: 12px;
    height: 12px;
    flex-shrink: 0;
}

/* レスポンシブ: スマートフォン表示でズームコントロールを確実に非表示 */

/* タイムラインメイン領域 (左側固定ナビ余白 + スクロールビューポート) */
.timeline-main-area {
    flex: 1;
    display: flex;
    min-height: 0;
    position: relative;
    overflow: hidden;
    width: 100%;
}

/* 固定左ナビサイドバー: 余白 & 前後キーフレーム移動ボタン (↑/↓) */
.timeline-nav-sidebar {
    width: 46px;
    background: #181c24;
    border-right: 1px solid #2d3340;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 6px 4px;
    flex-shrink: 0;
    z-index: 15;
}

.btn-kf-nav {
    width: 36px;
    height: 36px;
    background: #202632;
    border: 1px solid #334155;
    border-radius: var(--radius-sm);
    color: #cbd5e1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
    padding: 0;
}

.btn-kf-nav:hover {
    background: #2d3748;
    color: #ffffff;
    border-color: #64748b;
}

.btn-kf-nav:active {
    transform: scale(0.94);
}

.btn-kf-nav svg {
    width: 14px;
    height: 14px;
}

.kf-nav-sub {
    font-size: 9px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #94a3b8;
    line-height: 1;
}

.btn-kf-nav:hover .kf-nav-sub {
    color: #ffffff;
}

@media (max-width: 768px), (hover: none) and (pointer: coarse) {

    /* スマホ表示ではタイムライン削除ボタンのテキストを非表示にしてアイコンのみコンパクト表示 */
    .btn-delete-kf span {
        display: none !important;
    }
    .btn-delete-kf {
        padding: 0 8px;
        min-width: 32px;
        justify-content: center;
    }

    .timeline-nav-sidebar {
        width: 38px;
        padding: 4px 2px;
        gap: 4px;
    }
    .btn-kf-nav {
        width: 32px;
        height: 32px;
    }
    .btn-kf-nav svg {
        width: 13px;
        height: 13px;
    }
    .kf-nav-sub {
        display: none; /* スマホではアイコンのみでコンパクトに */
    }

    .timeline-zoom-control {
        display: none !important;
    }
    .timeline-selection-popup {
        top: 42px;
        padding: 3px 4px 3px 10px;
    }
    .btn-popup-action {
        padding: 4px 8px;
        font-size: 11px;
    }
}