/* Style CSS for OBS Web Mirror & Controller Dashboard */

:root {
    --bg-primary: #090d16;
    --bg-secondary: #121824;
    --bg-card: rgba(23, 32, 53, 0.65);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.4);
    
    --accent-red: #ef4444;
    --accent-green: #22c55e;
    --accent-yellow: #eab308;
    --accent-purple: #a855f7;
    --accent-blue: #0ea5e9;
    
    --canvas-source-border: rgba(14, 165, 233, 0.6);
    --canvas-source-selected: rgba(168, 85, 247, 0.85);
    --canvas-source-bg: rgba(14, 165, 233, 0.08);
    --canvas-source-bg-selected: rgba(168, 85, 247, 0.15);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #334155;
}

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 1.5rem;
}

/* Header styling */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 2.2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.5));
}

.logo-text h1 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, #ffffff, #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.system-stats {
    display: flex;
    gap: 1rem;
}

.stat-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--bg-secondary);
    padding: 0.5rem 0.85rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-size: 0.8rem;
    font-weight: 500;
}

.indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}
.indicator.red { background-color: var(--accent-red); box-shadow: 0 0 8px var(--accent-red); }
.indicator.green { background-color: var(--accent-green); box-shadow: 0 0 8px var(--accent-green); }
.indicator.grey { background-color: var(--text-secondary); }
.indicator.yellow { background-color: var(--accent-yellow); box-shadow: 0 0 8px var(--accent-yellow); }

/* Dashboard Grid Layout */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 1.5rem;
    flex-grow: 1;
}

@media (max-width: 1200px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

/* Premium Card Elements */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.15);
}

.card-header h2 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-header h2 i {
    color: var(--primary-color);
}

.card-body {
    padding: 1.25rem;
}

.grid-2-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.flex-row {
    display: flex;
    gap: 0.75rem;
}

/* Canvas Area Container */
.canvas-section {
    display: flex;
    flex-direction: column;
    margin-bottom: 0;
}

.preview-status-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: rgba(15, 23, 42, 0.4);
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.canvas-wrapper {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #05080f;
    padding: 1.5rem;
    min-height: 480px;
    position: relative;
}

/* Bounding box for 16:9 simulation */
.obs-canvas {
    position: relative;
    width: 100%;
    max-width: 960px;
    aspect-ratio: 16 / 9;
    background-color: #000000;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

#preview-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    display: none; /* Shown dynamically when active */
}

/* Canvas overlays container */
.sources-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 5;
    pointer-events: auto;
}

/* Elements on canvas representing OBS sources */
.source-box {
    position: absolute;
    border: 1.5px solid var(--canvas-source-border);
    background-color: var(--canvas-source-bg);
    cursor: move;
    user-select: none;
    touch-action: none;
    transition: border-color 0.15s, background-color 0.15s, box-shadow 0.15s;
    box-sizing: border-box;
}

.source-box:hover {
    border-color: var(--accent-blue);
    background-color: rgba(14, 165, 233, 0.12);
}

.source-box.selected {
    border-color: var(--canvas-source-selected);
    background-color: var(--canvas-source-bg-selected);
    box-shadow: 0 0 12px rgba(168, 85, 247, 0.4);
    z-index: 10;
}

/* Title tag inside boxes */
.source-label {
    position: absolute;
    top: 4px;
    left: 4px;
    background-color: rgba(9, 13, 22, 0.85);
    color: var(--text-primary);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 500;
    pointer-events: none;
    border: 1px solid rgba(255,255,255,0.05);
    white-space: nowrap;
    max-width: 90%;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Resize handle shapes */
.source-box .resize-handle {
    width: 12px;
    height: 12px;
    background-color: #ffffff;
    border: 1.5px solid var(--canvas-source-selected);
    border-radius: 50%;
    position: absolute;
    z-index: 20;
    transition: transform 0.15s, background-color 0.15s;
}

.source-box .resize-handle:hover {
    transform: scale(1.25);
    background-color: var(--canvas-source-selected);
}

/* Corner positions for resizing */
.source-box .resize-handle.top-left { top: -6px; left: -6px; cursor: nwse-resize; }
.source-box .resize-handle.top-right { top: -6px; right: -6px; cursor: nesw-resize; }
.source-box .resize-handle.bottom-left { bottom: -6px; left: -6px; cursor: nesw-resize; }
.source-box .resize-handle.bottom-right { bottom: -6px; right: -6px; cursor: nwse-resize; }

.source-box.locked {
    border-color: rgba(255, 255, 255, 0.3) !important;
    background-color: rgba(255, 255, 255, 0.02) !important;
    cursor: default !important;
}

.source-box.hidden-item {
    display: none !important;
}

/* Video Placeholder empty state */
.video-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 2;
    padding: 2rem;
    text-align: center;
    background-color: #0b0f19;
}

.placeholder-icon {
    font-size: 3rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    opacity: 0.5;
}

.video-placeholder p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    max-width: 420px;
}

.canvas-footer-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.85rem 1.25rem;
    border-top: 1px solid var(--border-color);
    background-color: rgba(0,0,0,0.1);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Controls Column details */
.form-group {
    margin-bottom: 0.85rem;
}

.form-group.full-width {
    grid-column: span 2;
}

.form-group label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.35rem;
    font-weight: 500;
}

.form-control, .form-select {
    width: 100%;
    background-color: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.85rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Dropdown list specific options */
.form-select option {
    background-color: var(--bg-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    border: none;
    transition: background-color 0.2s, transform 0.1s, box-shadow 0.2s;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-primary);
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
}
.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-success {
    background-color: var(--accent-green);
    color: #ffffff;
    box-shadow: 0 4px 10px rgba(34, 197, 94, 0.3);
}
.btn-success:hover {
    background-color: #16a34a;
}

.btn-danger {
    background-color: var(--accent-red);
    color: #ffffff;
}
.btn-danger:hover {
    background-color: #dc2626;
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
}

.btn-block {
    width: 100%;
}

.btn-icon {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem;
}
.btn-icon:hover {
    background-color: rgba(255,255,255,0.05);
    color: var(--text-primary);
}

.btn-control {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    padding: 0.85rem;
    background-color: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-control:hover {
    background-color: rgba(15, 23, 42, 0.85);
    border-color: var(--primary-color);
}

.btn-control i {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.btn-control.active-stream {
    border-color: var(--accent-red);
    background-color: rgba(239, 68, 68, 0.15);
}
.btn-control.active-stream i {
    color: var(--accent-red);
}

.btn-control.active-record {
    border-color: var(--accent-red);
    background-color: rgba(239, 68, 68, 0.15);
}
.btn-control.active-record i {
    color: var(--accent-red);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

/* Empty texts */
.empty-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: center;
    padding: 1rem 0;
    font-style: italic;
}

/* Scene items controller list */
.scenes-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 160px;
    overflow-y: auto;
    padding-right: 2px;
}

.scene-item-btn {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.6rem 0.85rem;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s;
}

.scene-item-btn:hover {
    background-color: rgba(15, 23, 42, 0.8);
    color: var(--text-primary);
}

.scene-item-btn.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.15));
    border-color: var(--primary-color);
    color: var(--text-primary);
    font-weight: 500;
}

/* Source management items list */
.sources-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 220px;
    overflow-y: auto;
    padding-right: 2px;
}

.source-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    transition: all 0.2s;
    user-select: none;
}

.source-item.dragging {
    opacity: 0.4;
    border-style: dashed;
    border-color: var(--accent-purple);
    background-color: rgba(168, 85, 247, 0.05);
}

.source-item-drag-handle {
    opacity: 0.5;
    transition: opacity 0.15s, color 0.15s;
}

.source-item-drag-handle:hover {
    opacity: 1;
    color: var(--accent-purple) !important;
}


.source-item.selected {
    border-color: var(--accent-purple);
    background-color: rgba(168, 85, 247, 0.05);
}

.source-item-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 0;
}

.source-item-meta span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.source-type-icon {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.source-item-actions {
    display: flex;
    gap: 0.35rem;
}

.btn-action-icon {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.8rem;
    padding: 0.25rem 0.4rem;
    border-radius: 4px;
    transition: all 0.15s;
}

.btn-action-icon:hover {
    color: var(--text-primary);
    background-color: rgba(255,255,255,0.06);
}

.btn-action-icon.active {
    color: var(--primary-color);
}

.btn-action-icon.danger:hover {
    color: var(--accent-red);
    background-color: rgba(239, 68, 68, 0.1);
}

#audio-list {
    display: flex;
    gap: 1.25rem;
    overflow-x: auto;
    padding: 0.5rem 0;
    min-height: 250px;
    scroll-behavior: smooth;
}

/* Audio Mixer Vertical Channels */
.audio-mixer-channel {
    background-color: #111827;
    border: 1.5px solid var(--border-color);
    border-radius: 10px;
    width: 140px;
    min-width: 140px;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.85rem 0.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    position: relative;
    transition: border-color 0.25s, box-shadow 0.25s;
}

.audio-mixer-channel:hover {
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 4px 25px rgba(99, 102, 241, 0.1);
}

.audio-mixer-channel.muted-channel {
    opacity: 0.65;
}

.channel-header-type {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    background: rgba(255, 255, 255, 0.04);
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 0.35rem;
    letter-spacing: 0.06em;
}

.channel-header-name {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--text-primary);
    max-width: 100%;
    margin-bottom: 0.2rem;
}

.channel-header-name span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.channel-header-name i {
    color: var(--text-secondary);
    font-size: 0.65rem;
}

.channel-db-label {
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.channel-body {
    display: flex;
    gap: 0.75rem;
    align-items: flex-end;
    height: 160px;
    margin-bottom: 0.75rem;
    position: relative;
}

.slider-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
}

/* Vertical Input Slider */
input[type="range"].vertical-volume-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 6px;
    height: 150px;
    background: #0f172a;
    border-radius: 3px;
    outline: none;
    writing-mode: vertical-lr;
    direction: rtl;
    vertical-align: middle;
}

input[type="range"].vertical-volume-slider::-webkit-slider-runnable-track {
    width: 6px;
    height: 150px;
    background: #0f172a;
    border-radius: 3px;
}

input[type="range"].vertical-volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 24px;
    border-radius: 4px;
    background: #ffffff;
    box-shadow: 0 1px 4px rgba(0,0,0,0.6);
    cursor: pointer;
    margin-left: -4px; /* Center horizontally over track */
}

/* Meter layout */
.meter-container {
    display: flex;
    gap: 0.25rem;
    height: 100%;
    align-items: flex-end;
    position: relative;
    padding-right: 22px; /* space for ticks */
}

.meter-track {
    width: 8px;
    height: 150px;
    background: #05080f;
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

.meter-fill-bg {
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, 
        #22c55e 0%, 
        #22c55e 70%, 
        #eab308 70%, 
        #eab308 88%, 
        #ef4444 88%, 
        #ef4444 100%
    );
    opacity: 0.15; /* Dim background */
    position: absolute;
    bottom: 0;
    left: 0;
}

.meter-fill-active {
    width: 100%;
    height: 0%; /* Dynamic bouncing height */
    background: linear-gradient(to top, 
        #22c55e 0%, 
        #22c55e 70%, 
        #eab308 70%, 
        #eab308 88%, 
        #ef4444 88%, 
        #ef4444 100%
    );
    position: absolute;
    bottom: 0;
    left: 0;
    transition: height 0.08s ease-out;
}

/* Tick marks styling */
.meter-ticks {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 150px;
    position: absolute;
    right: 0;
    bottom: 0;
    font-size: 0.55rem;
    color: rgba(255,255,255,0.3);
    font-family: monospace;
    line-height: 1;
}

.channel-footer {
    display: flex;
    justify-content: space-around;
    width: 100%;
    border-top: 1px solid var(--border-color);
    padding-top: 0.65rem;
    gap: 0.25rem;
}

.channel-footer button {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--text-secondary);
    padding: 0.25rem 0.4rem;
    border-radius: 4px;
    transition: all 0.15s;
}

.channel-footer button:hover {
    color: var(--text-primary);
    background-color: rgba(255,255,255,0.06);
}

.channel-footer button.muted {
    color: var(--accent-red) !important;
}

.channel-footer button.active {
    color: var(--accent-blue) !important;
}

.audio-settings-trigger-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    background: transparent;
    border: none;
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
    opacity: 0.4;
    transition: opacity 0.15s;
}
.audio-settings-trigger-btn:hover {
    opacity: 1;
    color: var(--text-primary);
}

/* Tabs */
.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.85rem;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 0;
    cursor: pointer;
    font-size: 0.8rem;
    font-family: inherit;
    font-weight: 500;
    transition: all 0.2s;
    border-bottom: 2px solid transparent;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 600;
}

.tab-content {
    display: none;
}

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

/* Advanced Audio Settings Panel */
.audio-extra-settings-panel {
    background-color: rgba(15, 23, 42, 0.65);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.75rem;
    margin-top: 0.5rem;
}

.audio-extra-settings-panel label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.audio-extra-settings-panel .form-select,
.audio-extra-settings-panel .form-control {
    padding: 0.35rem 0.5rem;
    font-size: 0.8rem;
    background-color: rgba(9, 13, 22, 0.8);
}

.balance-val-label {
    font-size: 0.7rem;
    color: var(--primary-color);
    font-weight: 600;
}

/* OBS Settings Tab Buttons */
.settings-tabs {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.85rem;
}

.settings-tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 0;
    cursor: pointer;
    font-size: 0.8rem;
    font-family: inherit;
    font-weight: 500;
    transition: all 0.2s;
    border-bottom: 2px solid transparent;
    text-align: center;
}

.settings-tab-btn:hover {
    color: var(--text-primary);
}

.settings-tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 600;
}

.settings-tab-content {
    display: none;
}

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

/* Advanced Audio Settings Collapsible Panel */
.audio-advanced-settings-area {
    background-color: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.15);
}

/* Output Nested tabs */
.nested-tabs {
    display: flex;
    gap: 6px;
    background-color: rgba(15, 23, 42, 0.4);
    padding: 4px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 1.25rem;
    margin-top: 0.5rem;
}

.nested-tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.45rem 0.5rem;
    cursor: pointer;
    font-size: 0.75rem;
    font-family: inherit;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.2s;
    text-align: center;
}

.nested-tab-btn:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.03);
}

.nested-tab-btn.active {
    color: var(--text-primary);
    background-color: var(--primary-color);
    font-weight: 600;
    box-shadow: 0 2px 8px var(--primary-glow);
}

.nested-tab-content {
    display: none;
    animation: settingsFadeIn 0.2s ease-in-out;
}

.nested-tab-content.active {
    display: block;
}

@keyframes settingsFadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Radio track group and circle labels */
.radio-track-group, .checkbox-track-group {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-top: 0.35rem;
    margin-bottom: 0.35rem;
}

.radio-track-label, .checkbox-track-label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1.5px solid var(--border-color);
    background-color: rgba(15, 23, 42, 0.5);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    user-select: none;
}

.radio-track-label input, .checkbox-track-label input {
    display: none !important; /* Hide standard input */
}

.radio-track-label:has(input:checked), .checkbox-track-label:has(input:checked) {
    border-color: var(--primary-color);
    background-color: rgba(99, 102, 241, 0.2);
    color: var(--text-primary);
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.3);
}

/* Input groups with suffix label */
.input-unit-group {
    display: flex;
    align-items: center;
    width: 100%;
}

.input-unit-group .form-control {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-right: none;
    flex-grow: 1;
}

.input-unit-label {
    background-color: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-color);
    border-left: none;
    color: var(--text-secondary);
    padding: 0.47rem 0.75rem;
    font-size: 0.8rem;
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
    user-select: none;
    white-space: nowrap;
    display: flex;
    align-items: center;
}

/* Subsection Separator */
.section-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--primary-color);
    letter-spacing: 0.05em;
    border-bottom: 1.5px solid rgba(99, 102, 241, 0.25);
    padding-bottom: 0.25rem;
    margin-top: 1.25rem;
    margin-bottom: 0.85rem;
}

.checkbox-group {
    display: flex;
    align-items: center;
    margin: 0.65rem 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-primary);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input {
    cursor: pointer;
    width: 15px;
    height: 15px;
}

.help-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    font-style: italic;
}

/* Studio Mode layout and styles */
.studio-canvas-container {
    display: flex;
    width: 100%;
    gap: 1.5rem;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.studio-pane {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
    max-width: 960px;
    transition: max-width 0.3s ease;
}

.studio-canvas-container.active-studio-mode .studio-pane {
    max-width: calc(50% - 70px);
}

.studio-pane-title {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary-color);
    margin-bottom: 0.15rem;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.obs-canvas-program {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background-color: #000000;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.studio-transition-pane {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 110px;
    flex-shrink: 0;
    gap: 0.5rem;
}

.btn-transition {
    width: 100%;
    padding: 0.75rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    box-shadow: 0 4px 15px var(--primary-glow);
}