:root {
    --bg-color: #0f1115;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --glass-bg: rgba(30, 30, 35, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --panel-radius: 16px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    /* align-items: center; Remove to allow top alignment when scrolling */
    padding-top: 8px;
    /* Add some top padding */
    padding-bottom: 40px;
    /* overflow: hidden; REMOVED to allow scroll */
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

.hidden {
    display: none !important;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

::-webkit-scrollbar-corner {
    background: transparent;
}

.app-container {
    width: 100%;
    max-width: 1200px;
    min-height: 100vh;
    height: auto;
    /* Allow growth */
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 20px;
    overflow: visible;
    /* Allow page scroll */
}

header {
    text-align: center;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 8px 0;
    background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

.glass-panel {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--panel-radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.main-content-wrapper {
    height: 65vh;
    /* Fixed height relative to viewport */
    flex: 0 0 auto;
    /* Don't shrink or grow */
    display: flex;
    gap: 20px;
    min-height: 500px;
    /* Minimum useful height */
    width: 100%;
}

#layers-panel {
    width: 300px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex-shrink: 0;
}

#files-panel {
    width: 300px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex-shrink: 0;
}

.file-list-header-row {
    display: grid;
    grid-template-columns: 1fr 70px;
    gap: 10px;
    padding: 8px 19px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.file-list-header-row span:last-child {
    text-align: right;
}

.file-item {
    padding: 10px 12px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-radius: 6px;
    transition: var(--transition);
    display: grid;
    grid-template-columns: 1fr 70px;
    gap: 10px;
    align-items: center;
}

.file-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.file-item.active {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent);
    border-left: 2px solid var(--accent);
}

.file-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-size {
    font-size: 0.8rem;
    opacity: 0.7;
    white-space: nowrap;
    text-align: right;
}

.fold-btn {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    transition: all 0.3s ease;
    background: rgba(0, 0, 0, 0.5);
    /* Semi-transparent background for visibility */
    border-radius: 50%;
}

.fold-btn svg {
    display: block;
    /* Fix vertical alignment */
}

.glass-panel.collapsed .fold-btn {
    transform: translateY(-50%) rotate(180deg);
}

.glass-panel.collapsed .layers-list,
.glass-panel.collapsed .file-list-header-row,
.glass-panel.collapsed .no-layers-msg,
.glass-panel.collapsed .layers-header h3,
.glass-panel.collapsed .layers-header .badge,
.glass-panel.collapsed #refresh-files-btn {
    display: none;
}

.glass-panel.collapsed .layers-header {
    border-bottom: none;
    height: 100%;
    /* Take full height of collapsed panel */
    padding: 0;
    /* Remove padding to shrink width effectively? No, width is separate */
}

.glass-panel.collapsed {
    height: auto;
    width: 40px !important;
    /* Force width to shrink */
    min-height: 40px;
    /* Ensure button fits */
    flex: 0 0 auto;
    transition: width 0.3s ease, min-width 0.3s ease;
    /* Animate width */
}

/* Override ID widths when collapsed */
#files-panel.collapsed,
#layers-panel.collapsed {
    width: 40px;
}

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

.layers-header h3 {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.header-icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.header-icon-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.badge {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.75rem;
    color: var(--text-primary);
}

.layers-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.layer-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.layer-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.layer-item.hidden-layer {
    opacity: 0.5;
}

.layer-type-icon {
    width: 16px;
    height: 16px;
    color: var(--accent);
    flex-shrink: 0;
}

.layer-name {
    flex: 1;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-primary);
}

.visibility-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    display: flex;
    border-radius: 4px;
    transition: var(--transition);
}

.visibility-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.no-layers-msg {
    padding: 20px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-style: italic;
}

.viewer-container {
    flex: 1;
    /* Removed explicit flex: 1 from previous definition to allow this override context */
    background: #1e1e1e;
    border-radius: var(--panel-radius);
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.3s ease;
    border: 1px solid var(--glass-border);
}

.viewer-container.drag-over {
    border: 2px dashed var(--accent);
    background: rgba(99, 102, 241, 0.1);
}

#lottie-player {
    width: 100%;
    height: 100%;
    max-height: 50vh;
}

.empty-state {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    color: var(--text-secondary);
    pointer-events: none;
    /* Let clicks pass through if needed, but button needs pointer events */
}

.empty-state button {
    pointer-events: auto;
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.controls-panel {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

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

.settings-row {
    justify-content: space-between;
    flex-wrap: wrap;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.icon-btn {
    background: var(--accent);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
    flex-shrink: 0;
}

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

#loop-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

#loop-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.4);
}

.icon {
    width: 24px;
    height: 24px;
}

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

input[type=range] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    background: transparent;
}

input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 16px;
    width: 16px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    margin-top: -6px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

input[type=range]::-webkit-slider-runnable-track {
    width: 100%;
    height: 4px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
}

.time-display {
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--text-secondary);
    min-width: 60px;
    text-align: right;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.control-group label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.speed-controls,
.bg-controls {
    display: flex;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    padding: 2px;
}

.speed-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 4px 8px;
    font-size: 0.8rem;
    cursor: pointer;
    border-radius: 6px;
    transition: var(--transition);
}

.speed-btn.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.bg-btn {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    cursor: pointer;
    margin: 2px;
    position: relative;
}

.bg-btn.active::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
}

.bg-btn.dark {
    background: #1e1e1e;
}

.bg-btn.light {
    background: #ffffff;
}

.bg-btn.transparent {
    background-image: linear-gradient(45deg, #333 25%, transparent 25%), linear-gradient(-45deg, #333 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #333 75%), linear-gradient(-45deg, transparent 75%, #333 75%);
    background-size: 10px 10px;
    background-position: 0 0, 0 5px, 5px -5px, -5px 0px;
}

.metadata-row {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 12px;
    display: flex;
    gap: 20px;
    font-size: 0.8rem;
}

.meta-item {
    display: flex;
    flex-direction: column;
}

.meta-item .label {
    color: var(--text-secondary);
    font-size: 0.7rem;
}

.meta-item .value {
    color: var(--text-primary);
    font-weight: 500;
}

.layer-color-picker {
    -webkit-appearance: none;
    border: none;
    width: 20px;
    height: 20px;
    padding: 0;
    margin: 0;
    background: transparent;
    cursor: pointer;
    border-radius: 50%;
    overflow: hidden;
}

.layer-color-picker::-webkit-color-swatch-wrapper {
    padding: 0;
}

.layer-color-picker::-webkit-color-swatch {
    border: none;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Analysis Panel */
/* Analysis Panel */
.analysis-panel {
    /* Match Glass Panel style */
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--panel-radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);

    padding: 20px;
    margin-top: 40px;
    /* More separation */
    max-height: 500px;
    /* Allow more height */
    overflow-y: auto;

    /* Ensure it doesn't affect layout above it randomly */
    flex-shrink: 0;
}

.analysis-panel h3 {
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 16px;
    color: var(--text-color);
}

.analysis-item {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

.analysis-item:last-child {
    border-bottom: none;
}

.analysis-item.warning {
    border-left: 4px solid #ffcc00;
    background-color: rgba(255, 204, 0, 0.1);
}

.analysis-item.error {
    border-left: 4px solid #ff4444;
    background-color: rgba(255, 68, 68, 0.1);
}

.analysis-type {
    font-weight: bold;
    display: block;
    margin-bottom: 4px;
}

.analysis-layer {
    font-family: monospace;
    font-size: 12px;
    color: #888;
    margin-bottom: 4px;
    display: block;
}

.analysis-success {
    color: #4caf50;
    padding: 10px;
    text-align: center;
}