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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #eee;
    min-width: 1200px;
    height: 100vh;
    padding: 10px 20px;
    overflow-x: auto;
    overflow-y: hidden;
}

.container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Tabs */
.tabs {
    position: absolute;
    top: 4px;
    right: 0;
    display: flex;
    gap: 2px;
    z-index: 100;
}

.tab {
    padding: 4px 14px;
    font-size: 0.78rem;
    color: #666;
    text-decoration: none;
    border-radius: 4px;
    transition: color 0.2s, background 0.2s;
    letter-spacing: 0.02em;
}

.tab:hover {
    color: #aaa;
}

.tab.active {
    color: #ccc;
    background: rgba(255, 255, 255, 0.08);
}

/* Tab content */
.tab-content {
    display: none;
    flex-direction: column;
    width: 100%;
    height: 100%;
    min-height: 0;
}

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

h1 {
    flex-shrink: 0;
    text-align: center;
    margin-bottom: 20px;
    font-size: 1.6rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: -0.01em;
}

.controls {
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.controls button {
    padding: 10px 20px;
    font-size: 1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #3a7bd5;
    color: white;
}

#tab-speed .controls button {
    background: #e85d04;
}

.controls button:hover {
    background: #00d2ff;
    transform: translateY(-2px);
}

#tab-speed .controls button:hover {
    background: #ffa500;
}

.controls button:active {
    transform: translateY(0);
}

.controls label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.controls input[type="range"] {
    width: 100px;
    cursor: pointer;
}

.controls input[type="number"] {
    width: 60px;
    padding: 5px;
    border: 1px solid #3a7bd5;
    border-radius: 4px;
    background: #1a1a2e;
    color: #eee;
    text-align: center;
}

#tab-speed .controls input[type="number"] {
    border-color: #e85d04;
}

.date-range-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
}

.controls input[type="date"] {
    padding: 4px 6px 4px 8px;
    border: 1px solid #3a7bd5;
    border-radius: 4px;
    background: #1a1a2e;
    color: #eee;
    font-size: 0.85rem;
    cursor: pointer;
    outline: none;
    color-scheme: dark;
}

.controls input[type="date"]::-webkit-calendar-picker-indicator {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23cccccc' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='4' width='18' height='18' rx='2' ry='2'/%3E%3Cline x1='16' y1='2' x2='16' y2='6'/%3E%3Cline x1='8' y1='2' x2='8' y2='6'/%3E%3Cline x1='3' y1='10' x2='21' y2='10'/%3E%3C/svg%3E");
    background-size: 16px 16px;
    background-repeat: no-repeat;
    background-position: center;
    width: 20px;
    height: 20px;
    cursor: pointer;
    opacity: 0.8;
    border-radius: 3px;
    padding: 2px;
}

.controls input[type="date"]::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
    background-color: rgba(255, 255, 255, 0.12);
}

.controls input[type="date"]:focus {
    border-color: #00d2ff;
}

#tab-speed .controls input[type="date"] {
    border-color: #e85d04;
}

#tab-speed .controls input[type="date"]:focus {
    border-color: #ffa500;
}

.date-range-sep {
    color: #666;
    font-size: 1rem;
}

.date-reset-btn {
    padding: 4px 8px !important;
    font-size: 0.8rem !important;
    background: rgba(255, 255, 255, 0.1) !important;
    border: 1px solid #555 !important;
    border-radius: 4px !important;
    color: #aaa !important;
    cursor: pointer;
    line-height: 1;
    transition: background 0.2s, color 0.2s !important;
    transform: none !important;
}

.date-reset-btn:hover {
    background: rgba(255, 255, 255, 0.2) !important;
    color: #fff !important;
    transform: none !important;
}

.chart-wrapper {
    flex: 1;
    min-height: 0;
    position: relative;
}

#tab-speed .chart-wrapper {
    flex: 6;
}

#posts-chart,
#speed-bars {
    height: 100%;
    overflow-y: auto;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

#posts-chart svg,
#speed-bars svg {
    display: block;
    width: 100%;
    height: auto;
}

/* Speed overlay (posts tab) */
#posts-speedOverlay {
    position: absolute;
    bottom: 110px;
    right: 40px;
    width: 820px;
    height: 300px;
    opacity: 0.7;
    transition: opacity 0.2s;
}

#posts-speedOverlay:hover {
    opacity: 1;
}

#posts-speedOverlay svg {
    display: block;
    width: 100%;
    height: 100%;
}

#posts-speedOverlay .speed-area {
    fill: url(#speedGradient);
}

#posts-speedOverlay .speed-line {
    fill: none;
    stroke: #3a7bd5;
    stroke-width: 1.5;
}

#posts-speedOverlay .speed-marker {
    stroke: #fff;
    stroke-width: 1.5;
}

#posts-speedOverlay .speed-axis text {
    fill: #888;
    font-size: 9px;
}

#posts-speedOverlay .speed-axis path,
#posts-speedOverlay .speed-axis line {
    stroke: #555;
}

#posts-speedOverlay .speed-label {
    fill: #aaa;
    font-size: 10px;
    font-weight: 600;
}

#posts-speedOverlay .speed-value {
    fill: #eee;
    font-size: 11px;
    font-weight: bold;
}

.date-overlay {
    position: absolute;
    bottom: 30px;
    right: 40px;
    font-size: 64px;
    font-weight: bold;
    color: #ccc;
    opacity: 0.5;
    pointer-events: none;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.bar {
    transition: fill 0.3s ease;
}

.bar:hover {
    filter: brightness(1.2);
}

.label {
    font-size: 12px;
    font-weight: 500;
    fill: #fff;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

.value-label {
    font-size: 11px;
    font-weight: bold;
    fill: #fff;
}

.axis text {
    fill: #aaa;
    font-size: 11px;
}

.x-axis .domain {
    display: none;
}

.axis path,
.axis line {
    stroke: #444;
}

.tick line {
    stroke: #333;
}

.grid-line {
    shape-rendering: crispEdges;
}

/* Scrubber */
#posts-scrubber,
#speed-scrubber {
    flex-shrink: 0;
    margin-top: 10px;
    padding-right: 8px;
}

.scrubber-svg {
    display: block;
    width: 100%;
    overflow: visible;
}

.scrubber-play-btn:hover circle {
    fill: #ddd;
}

/* Resize divider (speed tab) */
.resize-divider {
    flex-shrink: 0;
    height: 12px;
    background: linear-gradient(to bottom, 
        transparent 0%, 
        rgba(232, 93, 4, 0.15) 30%, 
        rgba(232, 93, 4, 0.25) 50%, 
        rgba(232, 93, 4, 0.15) 70%, 
        transparent 100%);
    cursor: row-resize;
    position: relative;
    margin: 6px 0;
    border-radius: 6px;
    border-top: 1px solid rgba(232, 93, 4, 0.2);
    border-bottom: 1px solid rgba(232, 93, 4, 0.2);
}

.resize-divider::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 4px;
    background: rgba(232, 93, 4, 0.5);
    border-radius: 2px;
    box-shadow: 0 0 8px rgba(232, 93, 4, 0.3);
}

.resize-divider::after {
    content: '⋮⋮';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    color: rgba(255, 255, 255, 0.6);
    font-size: 10px;
    letter-spacing: 2px;
}

.resize-divider:hover {
    background: linear-gradient(to bottom, 
        transparent 0%, 
        rgba(232, 93, 4, 0.25) 30%, 
        rgba(232, 93, 4, 0.4) 50%, 
        rgba(232, 93, 4, 0.25) 70%, 
        transparent 100%);
    border-top-color: rgba(232, 93, 4, 0.4);
    border-bottom-color: rgba(232, 93, 4, 0.4);
}

.resize-divider:hover::before {
    background: rgba(232, 93, 4, 0.7);
    box-shadow: 0 0 12px rgba(232, 93, 4, 0.5);
}

.resize-divider:hover::after {
    color: rgba(255, 255, 255, 0.9);
}

.resize-divider.dragging {
    background: linear-gradient(to bottom, 
        transparent 0%, 
        rgba(232, 93, 4, 0.35) 30%, 
        rgba(232, 93, 4, 0.5) 50%, 
        rgba(232, 93, 4, 0.35) 70%, 
        transparent 100%);
    border-top-color: #e85d04;
    border-bottom-color: #e85d04;
}

.resize-divider.dragging::before {
    background: #e85d04;
    box-shadow: 0 0 16px rgba(232, 93, 4, 0.7);
}

.resize-divider.dragging::after {
    color: #fff;
}

/* Line chart row (speed tab) */
.line-chart-row {
    flex: 4;
    min-height: 0;
    display: flex;
    gap: 0;
}

#speed-lineChart {
    flex: 4;
    min-width: 0;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px 0 0 10px;
    padding: 10px 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

#speed-lineChart svg {
    display: block;
    width: 100%;
    height: 100%;
}

#speed-legend {
    flex: 1;
    min-width: 0;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0 10px 10px 0;
    padding: 10px 14px;
    overflow-y: auto;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
}

.legend-search-wrapper {
    display: flex;
    gap: 4px;
    margin-bottom: 8px;
    flex-shrink: 0;
}

.legend-search {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid rgba(232, 93, 4, 0.4);
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.3);
    color: #eee;
    font-size: 0.85rem;
    outline: none;
}

.legend-search:focus {
    border-color: #e85d04;
    background: rgba(0, 0, 0, 0.4);
}

.legend-search::placeholder {
    color: #666;
}

.legend-pinned-container {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(232, 93, 4, 0.3);
    flex-shrink: 0;
}

.legend-chip {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 6px 4px 8px;
    background: rgba(232, 93, 4, 0.2);
    border: 1px solid rgba(232, 93, 4, 0.4);
    border-radius: 16px;
    font-size: 0.75rem;
    color: #eee;
    max-width: 100%;
}

.legend-chip-color {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.legend-chip-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}

.legend-chip-remove {
    background: none;
    border: none;
    color: #999;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    padding: 0 2px;
    margin-left: 2px;
    border-radius: 50%;
    transition: all 0.15s;
}

.legend-chip-remove:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.2);
}

.legend-items-container {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}

.legend-title {
    font-size: 0.7rem;
    color: #666;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 8px;
    margin-bottom: 2px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.15s, opacity 0.2s;
    user-select: none;
}

.legend-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.legend-item .legend-color {
    width: 14px;
    height: 4px;
    border-radius: 2px;
    flex-shrink: 0;
}

.legend-item .legend-check {
    display: none;
    color: #e85d04;
    font-size: 0.75rem;
    flex-shrink: 0;
    margin-left: -4px;
}

.legend-item.selected .legend-check {
    display: inline;
}

.legend-item .legend-name {
    font-size: 0.85rem;
    color: #ccc;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.legend-item .legend-peak {
    margin-left: auto;
    font-size: 0.75rem;
    color: #777;
    flex-shrink: 0;
}

.legend-item.selected {
    background: rgba(232, 93, 4, 0.15);
}

.legend-item.selected .legend-name {
    color: #fff;
}

.legend-item.selected .legend-color {
    box-shadow: 0 0 6px currentColor;
}

.line-axis text {
    fill: #888;
    font-size: 11px;
}

.line-axis path,
.line-axis line {
    stroke: #444;
}

.user-line {
    fill: none;
    stroke-width: 1.5;
    opacity: 0.7;
    transition: opacity 0.2s, stroke-width 0.2s;
}

.user-line.dimmed {
    opacity: 0.08;
    stroke-width: 1;
}

.user-line.solo {
    opacity: 1;
    stroke-width: 2.5;
}

.line-marker {
    stroke: #fff;
    stroke-width: 1.5;
    stroke-dasharray: 3,2;
}


/* Tooltip */
.tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.9);
    border: 1px solid #3a7bd5;
    border-radius: 5px;
    padding: 10px;
    font-size: 12px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
    z-index: 1000;
}

.tooltip.visible {
    opacity: 1;
}

/* Loading state */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 400px;
    font-size: 1.5rem;
    color: #3a7bd5;
}

.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    margin-left: 10px;
    border: 3px solid #3a7bd5;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}