/* ==========================================================================
   BÌNH LỢI STUDIO - 100% CAPCUT REPLICA DESIGN SYSTEM & STYLESHEET
   Supports Desktop (3-Column Pro NLE) and Mobile (Bottom-Sheet Touch UI)
   ========================================================================== */

:root {
    --capcut-bg-canvas: #0e0f12;
    --capcut-bg-panel: #141518;
    --capcut-bg-rail: #18191d;
    --capcut-bg-drawer: #1e2025;
    --capcut-bg-hover: #2a2d35;
    --capcut-bg-active: #323640;
    --capcut-bg-card: #22242a;
    --capcut-border: #282b33;
    --capcut-border-light: #383c47;
    --capcut-cyan: #00f0ff;
    --capcut-cyan-hover: #33f3ff;
    --capcut-cyan-glow: rgba(0, 240, 255, 0.25);
    --capcut-text-primary: #ffffff;
    --capcut-text-secondary: #9ea3ae;
    --capcut-text-muted: #646873;
    --capcut-red: #ff3b30;
    --capcut-yellow: #ffd700;
    --capcut-purple: #8b5cf6;
    --capcut-green: #10b981;
}

/* Reset & Layout Container */
html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--capcut-bg-canvas);
    color: var(--capcut-text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    user-select: none;
    -webkit-user-select: none;
}

.capcut-studio-root {
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--capcut-bg-canvas);
}

/* Custom Thin Scrollbars */
.capcut-custom-scroll::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}
.capcut-custom-scroll::-webkit-scrollbar-track {
    background: transparent;
}
.capcut-custom-scroll::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 10px;
}
.capcut-custom-scroll::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 240, 255, 0.5);
}

/* ==================== 1. TOP HEADER BAR ==================== */
.capcut-header {
    height: 50px;
    min-height: 50px;
    background: var(--capcut-bg-panel);
    border-bottom: 1px solid var(--capcut-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 100;
}

.capcut-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}
.capcut-brand-badge {
    width: 30px;
    height: 30px;
    background: var(--capcut-cyan);
    border-radius: 7px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 12px var(--capcut-cyan-glow);
}
.capcut-brand-title {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.3px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.capcut-pro-tag {
    background: var(--capcut-cyan);
    color: #000;
    font-size: 0.6rem;
    font-weight: 800;
    padding: 1px 5px;
    border-radius: 4px;
}

/* Project Name & Canvas Setting in Header */
.capcut-project-name-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 12px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.capcut-project-input {
    background: transparent;
    border: none;
    color: var(--capcut-text-primary);
    font-size: 0.82rem;
    font-weight: 600;
    outline: none;
    max-width: 140px;
}
.capcut-project-input:focus {
    border-bottom: 1px solid var(--capcut-cyan);
}

.capcut-header-tools {
    display: flex;
    align-items: center;
    gap: 6px;
}
.capcut-icon-btn {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--capcut-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
}
.capcut-icon-btn:hover {
    background: var(--capcut-bg-hover);
    color: var(--capcut-text-primary);
}
.capcut-icon-btn:active {
    background: var(--capcut-bg-active);
}

.capcut-ratio-select {
    background: var(--capcut-bg-card);
    border: 1px solid var(--capcut-border);
    color: var(--capcut-text-primary);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 6px;
    cursor: pointer;
    outline: none;
}
.capcut-ratio-select:focus {
    border-color: var(--capcut-cyan);
}

.btn-capcut-export {
    background: linear-gradient(135deg, #00f0ff 0%, #0099ff 100%);
    color: #000 !important;
    font-size: 0.84rem;
    font-weight: 700;
    padding: 6px 18px;
    border-radius: 20px;
    border: none;
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    box-shadow: 0 2px 10px var(--capcut-cyan-glow);
    transition: all 0.2s ease;
}
.btn-capcut-export:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px var(--capcut-cyan-glow);
}
.btn-capcut-export:active {
    transform: translateY(0);
}

/* ==================== 2. DESKTOP 3-COLUMN WORKSPACE ==================== */
.capcut-desktop-body {
    flex: 1;
    display: flex;
    overflow: hidden;
    position: relative;
}

/* Left Panel: Rail + Drawer */
.capcut-left-panel {
    display: flex;
    height: 100%;
    border-right: 1px solid var(--capcut-border);
    z-index: 50;
}
.capcut-rail {
    width: 64px;
    min-width: 64px;
    background: var(--capcut-bg-rail);
    border-right: 1px solid var(--capcut-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 0;
    gap: 6px;
}
.capcut-rail-item {
    width: 52px;
    height: 52px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: var(--capcut-text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    font-weight: 600;
    gap: 3px;
    cursor: pointer;
    transition: all 0.15s ease;
}
.capcut-rail-item i {
    font-size: 1.15rem;
}
.capcut-rail-item:hover {
    color: var(--capcut-text-primary);
    background: var(--capcut-bg-hover);
}
.capcut-rail-item.active {
    background: var(--capcut-bg-drawer);
    color: var(--capcut-cyan);
    box-shadow: inset 2px 0 0 var(--capcut-cyan);
}

.capcut-drawer {
    width: 316px;
    min-width: 316px;
    max-width: 316px;
    background: var(--capcut-bg-drawer);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}
.capcut-drawer-header {
    padding: 14px 16px;
    border-bottom: 1px solid var(--capcut-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.capcut-drawer-header h6 {
    margin: 0;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--capcut-text-primary);
}
.capcut-drawer-body {
    padding: 14px;
    flex: 1;
    overflow-y: auto;
}

/* Template Cards & Audio Cards in Drawer */
.capcut-tpl-card {
    background: var(--capcut-bg-card);
    border: 1px solid var(--capcut-border);
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 12px;
}
.capcut-tpl-card:hover {
    border-color: var(--capcut-cyan);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}
.capcut-tpl-card.active {
    border-color: var(--capcut-cyan);
    box-shadow: 0 0 0 2px var(--capcut-cyan-glow);
}
.capcut-tpl-thumb {
    width: 100%;
    height: 120px;
    object-fit: cover;
    display: block;
}
.capcut-tpl-meta {
    padding: 10px 12px;
}
.capcut-tpl-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}
.capcut-tpl-info {
    font-size: 0.68rem;
    color: var(--capcut-text-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.capcut-audio-item {
    background: var(--capcut-bg-card);
    border: 1px solid var(--capcut-border);
    border-radius: 8px;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
}
.capcut-audio-item:hover, .capcut-audio-item.active {
    border-color: var(--capcut-cyan);
    background: rgba(0, 240, 255, 0.05);
}

/* ==================== 3. CENTER PANEL (CANVAS PREVIEW MONITOR) ==================== */
.capcut-center-panel {
    flex: 1;
    background: var(--capcut-bg-canvas);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px;
    position: relative;
    overflow: hidden;
}

/* Canvas Viewport Frame */
.capcut-viewport-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
    border-radius: 8px;
    background: #000;
    overflow: visible;
}

#studioCanvas {
    display: block;
    background: #000;
    border-radius: 8px;
}

/* ==================== 4. DIRECT CANVAS BOUNDING BOX (NO POPUPS!) ==================== */
.capcut-bounding-box {
    position: absolute;
    border: 2px solid var(--capcut-cyan);
    pointer-events: none;
    z-index: 80;
    box-shadow: 0 0 8px var(--capcut-cyan-glow);
    display: none;
}
.capcut-bounding-box.active {
    display: block;
}

.capcut-bbox-handle {
    position: absolute;
    width: 14px;
    height: 14px;
    background: #ffffff;
    border: 2px solid var(--capcut-cyan);
    border-radius: 50%;
    pointer-events: auto;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.6);
    z-index: 85;
}
.capcut-bbox-handle.nw { top: -7px; left: -7px; cursor: nwse-resize; }
.capcut-bbox-handle.ne { top: -7px; right: -7px; cursor: nesw-resize; }
.capcut-bbox-handle.se { bottom: -7px; right: -7px; cursor: nwse-resize; }
.capcut-bbox-handle.sw { bottom: -7px; left: -7px; cursor: nesw-resize; }

.capcut-bbox-handle.n { top: -7px; left: 50%; transform: translateX(-50%); cursor: ns-resize; }
.capcut-bbox-handle.s { bottom: -7px; left: 50%; transform: translateX(-50%); cursor: ns-resize; }
.capcut-bbox-handle.w { top: 50%; left: -7px; transform: translateY(-50%); cursor: ew-resize; }
.capcut-bbox-handle.e { top: 50%; right: -7px; transform: translateY(-50%); cursor: ew-resize; }

/* Rotate Handle */
.capcut-bbox-rotator-stem {
    position: absolute;
    top: -24px;
    left: 50%;
    width: 1px;
    height: 18px;
    background: var(--capcut-cyan);
}
.capcut-bbox-rotator {
    position: absolute;
    top: -32px;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background: var(--capcut-cyan);
    color: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    pointer-events: auto;
    cursor: grab;
    box-shadow: 0 2px 6px rgba(0,0,0,0.6);
}

/* Magnetic Alignment Guidelines */
.capcut-guide-line-x {
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 1px;
    background: var(--capcut-cyan);
    pointer-events: none;
    z-index: 70;
    display: none;
}
.capcut-guide-line-y {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1px;
    background: var(--capcut-cyan);
    pointer-events: none;
    z-index: 70;
    display: none;
}

/* Floating Control Bar Below Canvas */
.capcut-monitor-dock {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--capcut-bg-panel);
    border: 1px solid var(--capcut-border);
    padding: 6px 18px;
    border-radius: 30px;
    margin-top: 14px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.5);
    z-index: 90;
}
.capcut-dock-btn {
    background: transparent;
    border: none;
    color: var(--capcut-text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    transition: color 0.15s ease;
}
.capcut-dock-btn:hover {
    color: var(--capcut-text-primary);
}
.capcut-dock-btn.play {
    color: var(--capcut-cyan);
    font-size: 1.4rem;
}
.capcut-dock-time {
    font-size: 0.78rem;
    font-family: monospace;
    font-weight: 700;
    color: #fff;
    min-width: 90px;
    text-align: center;
}

/* ==================== 5. RIGHT PANEL (PROPERTY INSPECTOR) ==================== */
.capcut-right-panel {
    width: 320px;
    min-width: 320px;
    max-width: 320px;
    background: var(--capcut-bg-drawer);
    border-left: 1px solid var(--capcut-border);
    display: flex;
    flex-direction: column;
    z-index: 50;
    overflow-y: auto;
}
.capcut-inspector-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--capcut-border);
    display: flex;
    align-items: center;
    gap: 8px;
}
.capcut-inspector-tab-btn {
    background: transparent;
    border: none;
    color: var(--capcut-text-secondary);
    font-size: 0.78rem;
    font-weight: 700;
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}
.capcut-inspector-tab-btn.active {
    background: var(--capcut-bg-hover);
    color: var(--capcut-cyan);
}

.capcut-inspector-body {
    padding: 16px;
    flex: 1;
    overflow-y: auto;
}
.capcut-control-group {
    margin-bottom: 18px;
}
.capcut-control-label {
    font-size: 0.74rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--capcut-text-secondary);
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.capcut-range-slider {
    width: 100%;
    height: 4px;
    background: var(--capcut-border-light);
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}
.capcut-range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--capcut-cyan);
    cursor: pointer;
    box-shadow: 0 0 6px var(--capcut-cyan-glow);
}

/* ==================== 6. BOTTOM MULTI-TRACK TIMELINE ==================== */
.capcut-timeline-panel {
    height: 270px;
    min-height: 270px;
    background: var(--capcut-bg-panel);
    border-top: 1px solid var(--capcut-border);
    display: flex;
    flex-direction: column;
    z-index: 60;
}

/* Timeline Toolbar */
.capcut-timeline-toolbar {
    height: 38px;
    min-height: 38px;
    padding: 0 16px;
    border-bottom: 1px solid var(--capcut-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.capcut-tool-btn {
    background: transparent;
    border: none;
    color: var(--capcut-text-secondary);
    font-size: 0.76rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}
.capcut-tool-btn:hover {
    background: var(--capcut-bg-hover);
    color: var(--capcut-text-primary);
}
.capcut-tool-btn.active {
    color: var(--capcut-cyan);
}

/* Timeline Track Area */
.capcut-timeline-tracks-scroll {
    flex: 1;
    overflow-x: auto;
    overflow-y: hidden;
    position: relative;
    padding: 10px 16px 20px 16px;
    background: #0f1013;
}

/* Playhead Needle */
.capcut-playhead {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--capcut-red);
    z-index: 95;
    pointer-events: none;
    transform: translateX(-50%);
}
.capcut-playhead-knob {
    width: 14px;
    height: 16px;
    background: var(--capcut-red);
    clip-path: polygon(0 0, 100% 0, 100% 60%, 50% 100%, 0 60%);
    position: absolute;
    top: 0;
    left: -6px;
    pointer-events: auto;
    cursor: ew-resize;
}

/* Time Ruler */
.capcut-ruler {
    height: 22px;
    display: flex;
    align-items: center;
    font-size: 0.65rem;
    font-family: monospace;
    color: var(--capcut-text-muted);
    position: relative;
    user-select: none;
    border-bottom: 1px solid var(--capcut-border);
    margin-bottom: 8px;
    cursor: pointer;
}

/* Track 1: Filmstrip Video Track */
.capcut-track-video {
    display: flex;
    align-items: center;
    gap: 0;
    height: 64px;
    background: #191b20;
    border: 1px solid var(--capcut-border);
    border-radius: 8px;
    margin-bottom: 8px;
    position: relative;
    overflow: hidden;
}
.capcut-clip-block {
    height: 100%;
    position: relative;
    border-right: 2px solid #000;
    cursor: pointer;
    overflow: hidden;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    transition: filter 0.15s ease;
}
.capcut-clip-block:hover {
    filter: brightness(1.15);
}
.capcut-clip-block.selected {
    box-shadow: inset 0 0 0 2px var(--capcut-cyan);
}
.capcut-clip-duration {
    position: absolute;
    bottom: 4px;
    left: 6px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 1px 5px;
    border-radius: 4px;
}
.capcut-clip-slot-num {
    position: absolute;
    top: 4px;
    left: 6px;
    background: var(--capcut-cyan);
    color: #000;
    font-size: 0.6rem;
    font-weight: 800;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Transition Connector Between Clips */
.capcut-transition-badge {
    position: absolute;
    right: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background: #252830;
    border: 1px solid var(--capcut-border-light);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: var(--capcut-cyan);
    z-index: 10;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.5);
}
.capcut-transition-badge:hover {
    background: var(--capcut-cyan);
    color: #000;
}

/* Track 2: Subtitle / Text Track */
.capcut-track-subtitles {
    display: flex;
    align-items: center;
    height: 30px;
    background: #171622;
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 6px;
    margin-bottom: 8px;
    position: relative;
    overflow: hidden;
}
.capcut-sub-chip {
    height: 22px;
    background: rgba(139, 92, 246, 0.35);
    border: 1px solid var(--capcut-purple);
    border-radius: 4px;
    color: #fff;
    font-size: 0.68rem;
    font-weight: 600;
    padding: 0 8px;
    display: flex;
    align-items: center;
    position: absolute;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
}

/* Track 3: Audio Track with Waveform */
.capcut-track-audio {
    height: 32px;
    background: #112019;
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 6px;
    position: relative;
    display: flex;
    align-items: center;
    padding: 0 10px;
    overflow: hidden;
}
.capcut-audio-bar {
    width: 100%;
    height: 24px;
    background: linear-gradient(90deg, rgba(16, 185, 129, 0.4) 0%, rgba(16, 185, 129, 0.6) 100%);
    border-radius: 4px;
    display: flex;
    align-items: center;
    padding: 0 10px;
    gap: 8px;
    font-size: 0.72rem;
    font-weight: 600;
    color: #fff;
}

/* ==================== 7. MOBILE CAPCUT LAYOUT (< 992px) ==================== */
@media (max-width: 991.98px) {
    .capcut-left-panel, .capcut-right-panel {
        display: none !important;
    }

    .capcut-desktop-body {
        flex-direction: column;
    }

    .capcut-center-panel {
        flex: none;
        height: 46vh;
        padding: 8px;
    }

    .capcut-timeline-panel {
        flex: 1;
        height: auto;
        min-height: auto;
    }

    /* Mobile Fixed Center Needle Timeline */
    .capcut-mobile-playhead-center {
        position: absolute;
        top: 0;
        bottom: 0;
        left: 50%;
        width: 2px;
        background: #fff;
        z-index: 95;
        pointer-events: none;
        box-shadow: 0 0 8px rgba(255,255,255,0.8);
    }

    /* Mobile Bottom Sticky Dock */
    .capcut-mobile-bottom-bar {
        height: 60px;
        min-height: 60px;
        background: var(--capcut-bg-rail);
        border-top: 1px solid var(--capcut-border);
        display: flex !important;
        align-items: center;
        overflow-x: auto;
        padding: 0 10px;
        gap: 6px;
        z-index: 100;
    }
    .capcut-m-btn {
        flex: 0 0 62px;
        height: 50px;
        background: transparent;
        border: none;
        color: var(--capcut-text-secondary);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        font-size: 0.68rem;
        font-weight: 600;
        cursor: pointer;
    }
    .capcut-m-btn i {
        font-size: 1.25rem;
    }
    .capcut-m-btn:active, .capcut-m-btn.active {
        color: var(--capcut-cyan);
    }

    /* Mobile Bottom Sheet Drawer */
    .capcut-mobile-sheet {
        position: absolute;
        bottom: 60px;
        left: 0;
        right: 0;
        max-height: 50vh;
        background: var(--capcut-bg-drawer);
        border-top: 1px solid var(--capcut-border);
        border-radius: 16px 16px 0 0;
        z-index: 110;
        display: none;
        flex-direction: column;
        overflow: hidden;
        box-shadow: 0 -10px 30px rgba(0,0,0,0.7);
    }
    .capcut-mobile-sheet.open {
        display: flex;
        animation: slideUpMobile 0.25s ease forwards;
    }

    @keyframes slideUpMobile {
        from { transform: translateY(100%); }
        to { transform: translateY(0); }
    }
}