/* Budget Explorer - Streamgraph Visualization Styles */

:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-card: rgba(30, 30, 50, 0.7);
    --accent-primary: #6366f1;
    --accent-secondary: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.3);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --glass-blur: blur(20px);
}

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

html,
body {
    height: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary), #16213e);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, var(--accent-glow) 0%, transparent 40%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 40%);
    pointer-events: none;
    z-index: -1;
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 0.75rem;
}

.header-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-title h1 {
    font-size: clamp(1rem, 3vw, 1.5rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-title .icon {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

.header-nav {
    display: flex;
    gap: 1rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--accent-primary);
}

/* Main Container */
.main-container {
    display: flex;
    flex-direction: column;
    padding: 1rem 1.5rem;
    height: calc(100vh - 60px);
    gap: 1rem;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    flex-wrap: wrap;
}

.breadcrumb-item {
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s;
}

.breadcrumb-item:hover:not(.active) {
    color: var(--accent-secondary);
}

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 600;
    cursor: default;
}

.breadcrumb-separator {
    color: var(--text-muted);
}

/* Chart Container */
.chart-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    min-height: 0;
}

.chart-wrapper {
    flex: 1;
    position: relative;
    min-height: 300px;
}

.chart-wrapper svg {
    width: 100%;
    height: 100%;
}

.chart-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid var(--border-color);
    justify-content: center;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: opacity 0.2s;
}

.legend-item:hover {
    opacity: 0.8;
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

/* Chart Info */
.chart-info {
    text-align: center;
    padding: 0.5rem;
}

.chart-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Tooltip */
.tooltip {
    position: fixed;
    pointer-events: none;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    font-size: 0.8rem;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.15s ease;
    max-width: 250px;
}

.tooltip.visible {
    opacity: 1;
}

.tooltip-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.tooltip-value {
    font-family: monospace;
    color: var(--accent-secondary);
    font-size: 1rem;
    font-weight: 600;
}

.tooltip-year {
    color: var(--text-muted);
    font-size: 0.7rem;
}

/* Streamgraph paths */
.stream-path {
    cursor: pointer;
    transition: opacity 0.2s, filter 0.2s;
}

.stream-path:hover {
    filter: brightness(1.2);
}

.stream-path.dimmed {
    opacity: 0.3;
}

/* Bar chart bars */
.bar {
    cursor: default;
    transition: filter 0.2s;
}

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

/* Axes */
.axis text {
    fill: var(--text-muted);
    font-size: 0.7rem;
}

.axis path,
.axis line {
    stroke: var(--border-color);
}

.axis-label {
    fill: var(--text-secondary);
    font-size: 0.75rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        padding: 0.75rem 1rem;
    }

    .main-container {
        padding: 0.75rem;
        height: auto;
        min-height: calc(100vh - 60px);
    }

    .chart-wrapper {
        min-height: 350px;
    }

    .chart-legend {
        gap: 0.5rem;
        padding: 0.5rem;
    }

    .legend-item {
        font-size: 0.65rem;
    }

    .legend-color {
        width: 10px;
        height: 10px;
    }
}

@media (max-width: 480px) {
    .header {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }

    .header-nav {
        justify-content: center;
    }

    .breadcrumb {
        font-size: 0.75rem;
        justify-content: center;
    }

    .chart-wrapper {
        min-height: 300px;
    }

    .tooltip {
        max-width: 200px;
        font-size: 0.75rem;
    }
}