:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

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

/* Navbar */
.navbar {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.nav-brand h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

.nav-menu {
    display: flex;
    gap: 0.5rem;
}

.nav-link {
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--text-secondary);
    border-radius: 0.5rem;
    transition: all 0.2s;
    font-weight: 500;
}

.nav-link:hover {
    background-color: var(--bg-color);
    color: var(--primary-color);
}

.nav-link.active {
    background-color: var(--primary-color);
    color: white;
}

/* Main Content */
main {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

.section {
    display: none;
}

.section.active {
    display: block;
}

.section-header {
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 3rem;
    height: 3rem;
    margin: 0 auto 0.75rem;
    color: var(--primary-color);
}

.stat-icon svg {
    width: 100%;
    height: 100%;
    stroke: currentColor;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

/* Leaderboard Section */
.leaderboard-section {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    margin-bottom: 3rem;
}

.leaderboard-section h3 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.score-explanation {
    background-color: var(--bg-color);
    border-left: 4px solid var(--primary-color);
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 0.5rem;
}

.score-explanation p {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.score-explanation ul {
    list-style: none;
    padding-left: 0;
    margin: 0.5rem 0 0 0;
}

.score-explanation li {
    padding: 0.25rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Data Notice */
.data-notice {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background-color: #fff3cd;
    border-left: 4px solid var(--warning-color);
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 0.5rem;
}

.data-notice .notice-icon {
    width: 1.5rem;
    height: 1.5rem;
    flex-shrink: 0;
    color: var(--warning-color);
    margin-top: 0.125rem;
}

.data-notice p {
    margin: 0;
    color: #856404;
    font-size: 0.9375rem;
    line-height: 1.5;
}

/* Tables */
.table-container {
    overflow-x: auto;
    background: var(--card-bg);
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

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

.leaderboard-table thead {
    background-color: var(--primary-color);
    color: white;
    position: relative;
    z-index: 1;
}

.leaderboard-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.leaderboard-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s;
    position: relative;
    z-index: 2;
}

.leaderboard-table tbody tr:hover {
    background-color: var(--bg-color);
    z-index: 999998;
}

.leaderboard-table td {
    padding: 1rem;
}

.leaderboard-table tbody tr:last-child {
    border-bottom: none;
}

.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.875rem;
}

.rank-1 { background-color: #ffd700; color: #000; }
.rank-2 { background-color: #c0c0c0; color: #000; }
.rank-3 { background-color: #cd7f32; color: #fff; }
.rank-other { background-color: var(--bg-color); color: var(--text-secondary); }

.agent-name {
    font-weight: 600;
    color: var(--primary-color);
}

/* Tooltip styles */
.agent-tooltip {
    position: relative;
    cursor: help;
    border-bottom: 1px dotted var(--primary-color);
}

.agent-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    top: 50%;
    left: 100%;
    transform: translateY(-50%);
    margin-left: 1rem;
    padding: 1rem;
    background-color: var(--text-primary);
    color: white;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
    white-space: pre-wrap;
    max-width: 400px;
    width: max-content;
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.5;
    z-index: 999999;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.agent-tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

.category-tag {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background-color: var(--bg-color);
    color: var(--text-secondary);
    border-radius: 0.25rem;
    font-size: 0.75rem;
    margin-right: 0.25rem;
    margin-bottom: 0.25rem;
}

.score-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
}

.score-high { background-color: #dcfce7; color: #166534; }
.score-medium { background-color: #fef3c7; color: #92400e; }
.score-low { background-color: #fee2e2; color: #991b1b; }

/* Table Controls */
.table-controls {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

.control-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.control-icon {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--primary-color);
}

/* Filters */
.filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.search-input,
.sort-select {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.search-input {
    flex: 1;
}

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

/* Charts */
.chart-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.chart-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

.chart-card h3 {
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.category-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    background-color: var(--primary-color);
    color: white;
}

.category-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.category-count {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.category-card:hover .category-count {
    color: white;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

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

.pagination button:hover:not(:disabled) {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

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

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

/* Footer */
.footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
    color: var(--text-secondary);
}

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

    .nav-menu {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .chart-grid {
        grid-template-columns: 1fr;
    }

    .filters {
        flex-direction: column;
    }

    .leaderboard-table {
        font-size: 0.875rem;
    }

    .leaderboard-table th,
    .leaderboard-table td {
        padding: 0.5rem;
    }

    /* Adjust tooltip for mobile */
    .agent-tooltip::after {
        left: 100%;
        top: 0;
        transform: translateY(0);
        margin-left: 0.5rem;
        max-width: 280px;
    }
}