/* AutoEQ Dashboard Styles */
:root {
    --primary: #ff5500;
    --primary-dark: #cc4400;
    --secondary: #333;
    --background: #1a1a2e;
    --surface: #16213e;
    --surface-light: #1f3460;
    --text: #e8e8e8;
    --text-muted: #a0a0a0;
    --success: #4caf50;
    --warning: #ff9800;
    --error: #f44336;
    --border: #2a2a4a;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* Navigation */
.main-nav {
    background: var(--surface);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
    background: var(--surface-light);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Page Header */
.page-header {
    text-align: center;
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary);
}

.stat-label {
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Cards */
.card {
    background: var(--surface);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border);
}

.card h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text);
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

/* Chart Container */
.chart-container {
    position: relative;
    height: 300px;
    margin-bottom: 1rem;
}

/* Legend */
.legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

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

/* Cluster List */
.cluster-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
    max-height: 300px;
    overflow-y: auto;
}

.cluster-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: var(--surface-light);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.cluster-item:hover {
    transform: translateX(5px);
    border-left: 3px solid var(--primary);
}

.cluster-name {
    font-weight: 500;
}

.cluster-count {
    background: var(--primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
}

/* EQ List */
.eq-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.eq-item {
    padding: 0.75rem 1rem;
    background: var(--surface-light);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.eq-item:hover {
    background: var(--border);
}

.eq-name {
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.eq-description {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Tracks List */
.tracks-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
    max-height: 300px;
    overflow-y: auto;
}

.track-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--surface-light);
    border-radius: 8px;
    transition: all 0.2s;
}

.track-item:hover {
    background: var(--border);
}

.track-artwork {
    width: 50px;
    height: 50px;
    border-radius: 6px;
    background: var(--border);
    object-fit: cover;
}

.track-info {
    flex: 1;
    min-width: 0;
}

.track-title {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-artist {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.track-meta {
    text-align: right;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--surface-light);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
}

/* User Info */
.user-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.user-stat {
    padding: 1rem;
    background: var(--surface-light);
    border-radius: 8px;
}

.user-stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.user-stat-value {
    font-size: 1.25rem;
    font-weight: 500;
}

/* EQ Visualizer */
.eq-visualizer {
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
    height: 200px;
    background: var(--surface-light);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.eq-band {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.eq-bar-container {
    width: 30px;
    height: 150px;
    background: var(--border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.eq-bar {
    width: 100%;
    background: linear-gradient(to top, var(--primary), #ff8800);
    border-radius: 4px;
    position: absolute;
    bottom: 50%;
    transition: height 0.3s;
}

.eq-bar.negative {
    top: 50%;
    bottom: auto;
    background: linear-gradient(to bottom, #4488ff, #0044cc);
}

.eq-zero-line {
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--text-muted);
    top: 50%;
}

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

.eq-db {
    font-size: 0.75rem;
    font-weight: 500;
}

/* Table Styles */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.data-table th,
.data-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    background: var(--surface-light);
    font-weight: 500;
    position: sticky;
    top: 0;
}

.data-table tr:hover {
    background: var(--surface-light);
}

/* Scrollable Table Container */
.table-container {
    max-height: 500px;
    overflow-y: auto;
    border-radius: 8px;
    border: 1px solid var(--border);
}

/* Search Box */
.search-box {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.search-input {
    flex: 1;
    padding: 0.75rem 1rem;
    background: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 1rem;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
}

.filter-select {
    padding: 0.75rem 1rem;
    background: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 1rem;
    cursor: pointer;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.pagination button {
    padding: 0.5rem 1rem;
    background: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s;
}

.pagination button:hover,
.pagination button.active {
    background: var(--primary);
    border-color: var(--primary);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    margin-top: 2rem;
}

/* Cluster Detail Page */
.cluster-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.cluster-stats {
    display: flex;
    gap: 2rem;
}

.back-link {
    color: var(--text-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.back-link:hover {
    color: var(--text);
}

/* Tags */
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.tag {
    background: var(--surface-light);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Loading State */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
    color: var(--text-muted);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--surface);
    border-radius: 12px;
    padding: 2rem;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
    .main-nav {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .container {
        padding: 1rem;
    }

    .page-header h1 {
        font-size: 1.75rem;
    }

    .stat-value {
        font-size: 2rem;
    }
}