:root {
    --bg-dark: #0f0f11;
    --bg-panel: #1a1a1d;
    --bg-panel-hover: #232326;
    --accent: #ff6b00;
    --accent-hover: #ff8533;
    --text-main: #ffffff;
    --text-muted: #8e8e93;
    --border: #333336;
    --word-bg: #2a2a2e;
    --word-border: #44444a;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

html, body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    height: 100vh;
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: 'Inter', sans-serif;
}

/* ── Buttons ── */
.btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
    white-space: nowrap;
}

.btn:hover {
    background: var(--bg-panel-hover);
    border-color: #555;
}

.btn-primary {
    background: var(--text-main);
    color: var(--bg-dark);
    border: none;
    font-weight: 500;
}

.btn-primary:hover {
    background: #e0e0e0;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 16px;
    padding: 8px;
    border-radius: 50%;
    transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    color: var(--text-main);
    background: var(--bg-panel-hover);
}

.btn i, .icon-btn i {
    width: 1.2em;
    text-align: center;
    flex-shrink: 0;
}

/* ── Toolbar ── */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    height: 56px;
    gap: 12px;
}

.toolbar-left, .toolbar-center, .toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toolbar-left { flex-shrink: 0; }
.toolbar-center { flex: 1; justify-content: center; }
.toolbar-right { flex-shrink: 0; }

.logo {
    font-weight: 600;
    font-size: 18px;
    margin-right: 12px;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 8px;
}

.search-box {
    position: relative;
    width: 220px;
}

.search-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
}

.search-box input {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 7px 12px 7px 36px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 13px;
    transition: border-color 0.2s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent);
}

.view-mode-toggle {
    display: flex;
    background: var(--bg-dark);
    border-radius: var(--radius-sm);
    padding: 2px;
    border: 1px solid var(--border);
}

.view-mode-toggle .btn {
    border: none;
    padding: 5px 10px;
    font-size: 13px;
}

.view-mode-toggle .btn.active {
    background: var(--bg-panel);
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

/* ── Dropdown Menus ── */
.dropdown-wrapper {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    z-index: 200;
    min-width: 240px;
    max-height: 400px;
    overflow-y: auto;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    padding: 6px 0;
    animation: dropIn 0.15s ease;
}

.dropdown-menu::-webkit-scrollbar { width: 4px; }
.dropdown-menu::-webkit-scrollbar-track { background: transparent; }
.dropdown-menu::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.dropdown-menu.dropdown-menu-right {
    left: auto;
    right: 4px;
}

.dropdown-menu.open {
    display: block;
}

@keyframes dropIn {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

.dropdown-section-title {
    padding: 8px 16px 4px;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-muted);
    font-weight: 600;
}

.dropdown-item {
    padding: 9px 16px;
    cursor: pointer;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.15s ease;
    color: var(--text-main);
}

.dropdown-item:hover {
    background: var(--bg-panel-hover);
}

.dropdown-item i {
    width: 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: 12px;
}

.dropdown-divider {
    height: 1px;
    background: var(--border);
    margin: 6px 0;
}

/* ── Main Editor ── */
.editor-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 20px 24px;
    gap: 12px;
    overflow: hidden;
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.timeline-scroll-area {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 6px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    scrollbar-gutter: stable;
}

.timeline-scroll-area::-webkit-scrollbar { width: 6px; }
.timeline-scroll-area::-webkit-scrollbar-track { background: transparent; }
.timeline-scroll-area::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.timeline-scroll-area::-webkit-scrollbar-thumb:hover { background: #555; }

.placeholder-text {
    text-align: center;
    color: var(--text-muted);
    margin-top: 100px;
    font-size: 15px;
}

/* ── Add Line Button ── */
.add-line-wrapper {
    display: flex;
    justify-content: center;
    margin: -6px 0;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 50;
    position: relative;
}

.add-line-wrapper:hover {
    opacity: 1;
}

.add-line-btn {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text-muted);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 10px;
    transition: all 0.2s ease;
    box-shadow: 0 2px 5px rgba(0,0,0,0.5);
}

.add-line-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    transform: scale(1.1);
}

/* ── Timeline Track (Line) ── */
.timeline-track {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    padding: 10px 12px;
    gap: 12px;
    position: relative;
    transition: border-color 0.2s ease;
}

.timeline-track:hover { border-color: #555; }
.timeline-track.active { border-color: var(--accent); }

.track-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 72px;
}

.track-play-btn {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.track-play-btn:hover {
    background: var(--accent);
    color: #fff;
}

.track-info {
    font-size: 11px;
    color: var(--text-muted);
    font-family: monospace;
    min-width: 54px;
    text-align: right;
}

.track-content {
    flex: 1;
    position: relative;
    height: 40px;
    background: #111;
    border-radius: var(--radius-sm);
    border: 1px solid #222;
    overflow: hidden; /* This stays to fix the overflow issue */
}

.playback-indicator {
    position: absolute;
    top: -2px;
    bottom: -2px;
    width: 2px;
    background: #ff0000;
    z-index: 20;
    pointer-events: none;
    display: none;
    box-shadow: 0 0 6px rgba(255, 0, 0, 0.6);
}

.track-end-time {
    font-family: monospace;
    font-size: 11px;
    color: var(--text-muted);
    min-width: 54px;
}

.track-delete-btn {
    color: #ff4d4f;
    opacity: 0.4;
    font-size: 14px;
}
.track-delete-btn:hover {
    opacity: 1;
    background: rgba(255, 77, 79, 0.1);
}

/* ── Word Blocks ── */
.word-block {
    position: absolute;
    top: 0;
    bottom: 0;
    background: var(--word-bg);
    border-right: 1px solid var(--word-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: grab;
    user-select: none;
    transition: background-color 0.15s ease;
    z-index: 5;
    min-width: 2px;
    max-width: 100%;
    overflow: hidden;
    touch-action: none;
}

.word-block:hover { background: #3a3a40; }
.word-block.dragging { cursor: grabbing; background: #454549; z-index: 15; }

.word-text {
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 0 4px;
    pointer-events: none;
    line-height: 1.2;
}

.word-duration {
    font-size: 9px;
    color: var(--text-muted);
    pointer-events: none;
}

.resize-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 12px;
    background: transparent;
    cursor: col-resize;
    z-index: 10;
    touch-action: none;
}

.resize-handle.left { left: -4px; }
.resize-handle.right { right: -4px; }

.resize-handle:hover,
.resize-handle.active {
    background: rgba(255, 107, 0, 0.5);
}

/* ── Player Controls Footer ── */
.player-controls {
    background: var(--bg-panel);
    border-top: 1px solid var(--border);
    padding: 14px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    height: 64px;
}

.play-btn {
    background: var(--accent);
    color: #fff;
    border: none;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(255, 107, 0, 0.3);
    transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    flex-shrink: 0;
}

.play-btn:hover {
    transform: scale(1.05);
    background: var(--accent-hover);
}

.time-display {
    font-family: monospace;
    font-size: 13px;
    color: var(--text-muted);
    min-width: 130px;
    flex-shrink: 0;
}

.progress-bar-container {
    flex: 1;
    display: flex;
    align-items: center;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: #2a2a2e;
    border-radius: 3px;
    cursor: pointer;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    width: 0%;
    border-radius: 3px;
    pointer-events: none;
    transition: width 0.05s linear;
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    width: 110px;
    flex-shrink: 0;
}

.volume-control i {
    cursor: pointer;
    transition: color 0.2s ease;
}

.volume-control i:hover {
    color: var(--text-main);
}

.volume-slider {
    width: 100%;
    accent-color: var(--accent);
    cursor: pointer;
    height: 4px;
    -webkit-appearance: none;
    background: #2a2a2e;
    border-radius: 2px;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 12px;
    width: 12px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    box-shadow: 0 0 4px rgba(0,0,0,0.5);
    border: none;
}

.stats {
    font-size: 11px;
    color: var(--text-muted);
    min-width: 110px;
    text-align: right;
    flex-shrink: 0;
}

/* ── Modal Overlays ── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.15s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-box {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    min-width: 380px;
    box-shadow: 0 16px 48px rgba(0,0,0,0.5);
}

.modal-box::-webkit-scrollbar { width: 4px; }
.modal-box::-webkit-scrollbar-track { background: transparent; }
.modal-box::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
.modal-box::-webkit-scrollbar-thumb:hover { background: #555; }

.modal-box h3 {
    font-size: 16px;
    margin-bottom: 8px;
}

/* ── Compact view mode ── */
.compact-mode .timeline-scroll-area {
    gap: 4px;
}

.compact-mode .timeline-track {
    padding: 6px 10px;
    gap: 8px;
}

.compact-mode .track-content {
    height: 28px;
}

.compact-mode .word-text { font-size: 11px; }
.compact-mode .word-duration { display: none; }

/* ── Tablet & Large Screens (Compact Mode) ── */
@media (max-width: 1300px) {
    .toolbar {
        padding: 0 10px;
        gap: 8px;
    }

    .btn.tool-btn {
        font-size: 0 !important; 
        padding: 8px;
        min-width: 40px;
        justify-content: center;
    }
    .btn.tool-btn i {
        font-size: 16px;
        margin: 0;
    }
}

/* ── Mobile & Small Tablets (Stacked Mode) ── */
@media (max-width: 800px) {
    .toolbar {
        height: auto;
        min-height: 56px;
        flex-wrap: wrap;
        padding-top: 8px;
        padding-bottom: 8px;
    }

    .logo {
        display: none; 
    }
    
    .toolbar-left, .toolbar-center, .toolbar-right {
        width: 100%;
        justify-content: space-between;
        gap: 4px;
    }

    .toolbar-center {
        order: 3; 
        margin-top: 4px;
    }

    .search-box {
        width: 100%;
    }

    .player-controls {
        padding: 10px;
        gap: 8px;
        flex-wrap: wrap;
        height: auto;
    }

    .progress-bar-container {
        width: 100%;
        order: -1;
        margin-bottom: 8px;
    }

    .time-display {
        font-size: 11px;
        min-width: auto;
    }

    .volume-control {
        width: 80px;
    }

    .stats {
        display: none;
    }

    .modal-box {
        width: 95%;
        min-width: auto;
        padding: 16px;
    }

    .timeline-header {
        height: auto;
        flex-wrap: wrap;
        gap: 10px;
        padding: 10px;
    }

    .timeline-title {
        flex-wrap: wrap;
        gap: 8px;
    }

    #file-info-display {
        border-right: none !important;
        padding-right: 0 !important;
        width: 100%;
    }

    .dropdown-menu {
        max-width: calc(100vw - 24px);
        min-width: 200px;
    }
    
    #tools-menu {
        left: auto;
        right: 0;
        transform-origin: top right;
    }
}

/* ── Landscape Optimization ── */
@media (max-height: 500px) and (orientation: landscape) {
    .toolbar {
        height: 44px;
        min-height: 44px;
        flex-wrap: nowrap;
        padding: 0 8px;
        gap: 6px;
    }

    .logo, .view-mode-toggle {
        display: none !important; 
    }

    .toolbar-left, .toolbar-right {
        width: auto;
        gap: 4px;
    }

    .toolbar-center {
        margin-top: 0;
        order: 0;
        flex: 1;
        max-width: 150px;
        min-width: 80px;
    }
    
    .btn.tool-btn, .icon-btn {
        padding: 6px;
    }
    
    .btn-primary {
        padding: 6px 10px;
        font-size: 12px;
    }

    .search-box i {
        display: none; 
    }

    .search-box input {
        padding: 5px 8px;
        font-size: 12px;
    }

    .player-controls {
        height: 44px;
        padding: 0 8px;
        flex-wrap: nowrap;
        gap: 8px;
    }

    .progress-bar-container {
        order: 0;
        margin-bottom: 0;
    }

    .time-display {
        font-size: 10px;
        min-width: auto;
    }

    .volume-control {
        display: flex;
        width: 100px;
        gap: 4px;
    }
    
    .volume-slider {
        width: 60px;
    }

    .stats {
        display: none;
    }

    .play-btn {
        width: 30px;
        height: 30px;
        font-size: 12px;
    }
    
    .timeline-track {
        padding: 4px 8px;
        border-radius: 6px;
    }
    
    .track-content {
        height: 28px;
    }

    .dropdown-menu {
        max-height: 200px;
    }
}