:root {
    --bg-dark: #1a1c23;
    --bg-sidebar: #24262d;
    --bg-card: #2c2e36;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-purple: #8b5cf6;
    --accent-orange: #f59e0b;
    --border-color: #374151;
    --hover-color: #374151;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

/* Layout */
.app-container {
    display: flex;
    height: 100%;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    overflow-y: auto;
    flex-shrink: 0;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    color: var(--accent-blue);
}

.logo-container h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

/* Upload Section */
.upload-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.upload-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.75rem;
    background-color: var(--accent-blue);
    color: white;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s;
}

.upload-btn:hover {
    background-color: #2563eb;
}

.file-name {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Filters */
.filters-container h3 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.filter-group {
    margin-bottom: 1rem;
}

.filter-group label {
    display: block;
    font-size: 0.875rem;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
}

.filter-group select {
    width: 100%;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    padding: 0.5rem;
    outline: none;
}

.filter-group select[multiple] {
    height: 100px;
}

.reset-btn {
    width: 100%;
    padding: 0.5rem;
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 0.375rem;
    cursor: pointer;
    margin-top: 1rem;
}

.reset-btn:hover {
    background-color: var(--hover-color);
    color: var(--text-primary);
}

/* Main Content */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 1.875rem;
}

.date-display {
    color: var(--text-secondary);
}

/* Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.card {
    background-color: var(--bg-card);
    border-radius: 0.75rem;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.summary-card {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.card-icon.blue { background-color: rgba(59, 130, 246, 0.1); color: var(--accent-blue); }
.card-icon.green { background-color: rgba(16, 185, 129, 0.1); color: var(--accent-green); }
.card-icon.purple { background-color: rgba(139, 92, 246, 0.1); color: var(--accent-purple); }
.card-icon.orange { background-color: rgba(245, 158, 11, 0.1); color: var(--accent-orange); }

.card-info h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.card-info p {
    font-size: 1.5rem;
    font-weight: 700;
}

/* Charts */
.charts-grid-top, .charts-grid-middle {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.charts-grid-top {
    grid-template-columns: 2fr 1fr;
}

.charts-grid-middle {
    grid-template-columns: 1fr;
}

.chart-card {
    height: 400px;
    position: relative;
    display: flex;
    flex-direction: column;
}

.chart-card h3 {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

canvas {
    flex: 1;
    width: 100% !important;
    height: 100% !important;
}

/* Top Lists */
.top-lists-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.list-card {
    height: 300px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.list-card h3 {
    margin-bottom: 1rem;
}

.ranking-list {
    list-style: none;
    overflow-y: auto;
    flex: 1;
}

.ranking-list li {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.ranking-list li:last-child {
    border-bottom: none;
}

.ranking-list .rank-val {
    font-weight: 600;
}

/* Table */
.table-card {
    overflow: hidden;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.table-header input {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    outline: none;
}

.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

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

th {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
}

tbody tr:hover {
    background-color: var(--hover-color);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.pagination button {
    padding: 0.5rem 1rem;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 0.375rem;
    cursor: pointer;
}

.pagination button:hover {
    background-color: var(--hover-color);
}

/* Responsive */
@media (max-width: 1024px) {
    .charts-grid-top {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
        overflow: auto;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        overflow: visible;
    }

    .main-content {
        overflow: visible;
        height: auto;
    }

    .top-lists-grid {
        grid-template-columns: 1fr;
    }
}