@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css');

:root {
    --background: #f5f5f7;
    --surface: rgba(255, 255, 255, 0.9);
    --surface-hover: rgba(255, 255, 255, 0.9);
    --accent: #1DB954;
    --text-primary: rgba(0, 0, 0, 0.9);
    --text-secondary: rgba(0, 0, 0, 0.6);
    --border: rgba(0, 0, 0, 0.1);
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-sm: 0 1px 3px var(--shadow);
    --shadow-md: 0 2px 8px var(--shadow);
    --shadow-lg: 0 4px 16px var(--shadow);
    
    /* Breakpoints */
    --breakpoint-sm: 480px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1200px;
}

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

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    background: 
        linear-gradient(135deg, rgba(29, 185, 84, 0.15) 0%, #e8e8e8 100%),
        url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='2.5' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='matrix' values='1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0.15 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    background-blend-mode: overlay;
    color: var(--text-primary);
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    width: 100%;
    overscroll-behavior: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

html {
    height: 100%;
    overflow: auto;
}

.container {
    width: 100%;
    max-width: 1400px;
    padding: 24px;
    margin: 0 auto;
    padding-top: 88px;
}

h1 {
    font-size: 24px;
    font-weight: 600;
    margin: 0;
    padding: 0;
    background: linear-gradient(90deg, #000 0%, rgba(0,0,0,0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.01em;
}

h2 {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    margin: 0 0 16px 0;
    padding: 0;
    text-align: left;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 16px;
    padding: 0 12px;
}

.stat-card {
    background: var(--surface);
    padding: 16px;
    border-radius: 12px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    text-align: left;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 12px;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    background: none;
    -webkit-background-clip: initial;
    -webkit-text-fill-color: initial;
    margin-bottom: 4px;
}

.stat-subtext {
    color: var(--text-secondary);
    font-size: 12px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.visualization-container {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 16px;
    margin-top: 16px;
    padding: 0 12px;
}

.chart-container {
    background: var(--surface);
    padding: 20px;
    border-radius: 12px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    height: 400px;
    width: 100%;
    display: flex;
    flex-direction: column;
}

.chart-container h2 {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    margin: 0 0 16px 0;
    padding: 0;
    text-align: left;
    flex-shrink: 0;
}

.chart-container canvas {
    flex: 1;
    width: 100% !important;
    height: calc(100% - 32px) !important; /* Account for title height and margin */
}

select, button {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    padding: 10px 20px;
    margin: 5px;
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
}

select:hover, button:hover {
    background: var(--surface-hover);
    border-color: var(--accent);
}

select:focus, button:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(0, 122, 255, 0.2);
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 16px;
    padding-right: 40px;
}

.loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(245, 245, 247, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.loading-content {
    text-align: center;
    color: var(--text-primary);
}

.loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--accent);
    animation: spin 1s linear infinite;
    margin: 0 auto 12px;
}

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

.filter-actions .filter-button {
    flex: 1;
}

.yearly-artists {
    grid-column: span 6;
    background: var(--surface);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.yearly-artists h2 {
    position: sticky;
    top: 0;
    background: var(--surface);
    z-index: 1;
}

#yearlyArtistsList {
    flex: 1;
    overflow-y: auto;
    padding-right: 8px;
    margin: -8px -8px -8px 0;
    position: relative;
    z-index: 0;
}

/* Custom scrollbar styling */
#yearlyArtistsList::-webkit-scrollbar {
    width: 8px;
}

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

#yearlyArtistsList::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

#yearlyArtistsList::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.year-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    background: var(--background);
    border-radius: 6px;
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.year-item:last-child {
    margin-bottom: 0;
}

.year {
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 48px;
}

.artist-name {
    color: var(--text-primary);
    font-weight: 500;
}

.play-count {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--grid-gap, 16px);
    width: 100%;
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid-cols-6 { grid-template-columns: repeat(6, 1fr); }
.grid-cols-12 { grid-template-columns: repeat(12, 1fr); }

.col-span-1 { grid-column: span 1; }
.col-span-2 { grid-column: span 2; }
.col-span-3 { grid-column: span 3; }
.col-span-4 { grid-column: span 4; }
.col-span-6 { grid-column: span 6; }
.col-span-12 { grid-column: span 12; }

/* Filter Container */
.controls-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: hsla(0, 0%, 100%, 0.3);
    padding: 12px 24px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid hsla(0, 0%, 100%, 0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.filter-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 280px;
}

.year-filter {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 200px;
}

.year-select {
    flex: 1;
    padding: 8px 32px 8px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3e%3cpath d='M7 10l5 5 5-5z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 16px;
}

.year-range {
    display: flex;
    align-items: center;
    gap: 8px;
}

.year-range span {
    color: var(--text-secondary);
    font-size: 14px;
}

.filter-button {
    padding: 8px 16px;
    border: 1px solid var(--accent);
    border-radius: 8px;
    background: var(--accent);
    color: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-button:hover {
    background: rgba(0, 122, 255, 0.9);
}

.filter-button.secondary {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border);
}

.filter-button.secondary:hover {
    background: var(--surface-hover);
    border-color: var(--accent);
}

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
}

.filter-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    height: 32px;
    margin-left: 16px;
    min-width: 80px;
    position: relative;
}

.filter-toggle:hover {
    background: var(--surface-hover);
    border-color: var(--accent);
}

.filter-toggle:active {
    transform: scale(0.98);
}

.filter-text {
    display: inline-block;
    line-height: 1;
}

.filter-indicator {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0;
    transition: opacity 0.2s ease;
    border: 1px solid var(--surface);
}

.filter-indicator.active {
    opacity: 1;
}

.filter-panel {
    position: absolute;
    top: 100%;
    right: 20px;
    background: white;
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    padding: 16px;
    margin-top: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s ease;
    z-index: 1000;
}

.filter-panel.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.filter-actions {
    display: flex;
    gap: 8px;
    margin-top: 4px;
}

.filter-actions .filter-button {
    flex: 1;
}

/* Breakpoint Styles */
@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .chart-container {
        grid-column: span 12;
    }
    
    .lg\:grid-cols-12 { grid-template-columns: repeat(12, 1fr); }
    .lg\:col-span-2 { grid-column: span 4; }
    .lg\:col-span-3 { grid-column: span 3; }
    .lg\:col-span-4 { grid-column: span 4; }
    .lg\:col-span-6 { grid-column: span 6; }
    .lg\:col-span-12 { grid-column: span 12; }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .sm\:grid-cols-12 { grid-template-columns: repeat(12, 1fr); }
    .sm\:col-span-6 { grid-column: span 6; }
    .sm\:col-span-12 { grid-column: span 12; }
    
    .filter-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .year-filter {
        width: 100%;
    }
    
    .filter-button {
        width: 100%;
        margin: 5px 0;
    }

    h1 {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 16px;
        padding-top: 72px;
    }

    h1 {
        font-size: 1rem;
    }

    h2 {
        font-size: 14px;
        margin: 0 0 12px 0;
    }

    .stats-grid {
        gap: 8px;
        margin-bottom: 12px;
        padding: 0 8px;
    }

    .stat-card {
        padding: 12px;
    }

    .stat-value {
        font-size: 18px;
    }

    .visualization-container {
        gap: 12px;
        margin-top: 12px;
        padding: 0 8px;
    }

    .chart-container {
        padding: 16px;
    }

    .controls-container {
        padding: 8px 16px;
        height: 56px;
    }

    .filter-toggle {
        padding: 4px 8px;
        font-size: 12px;
        height: 28px;
    }

    .yearly-artists {
        padding: 16px;
    }

    .year-item {
        padding: 6px 8px;
        font-size: 0.9rem;
        margin-bottom: 6px;
    }

    .grid {
        gap: 12px;
    }
}