/* ============================================
   OMEGA ARENA - Exact Alpha Arena Clone
   ============================================ */

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

:root {
    --bg: #f3f3f3;
    --fg: #000000;
    --gray-100: #f3f4f6;
    --gray-300: #d1d5db;
    --positive: #16a34a;
    --negative: #dc2626;
}

body {
    font-family: 'IBM Plex Mono', monospace;
    background: var(--bg);
    color: var(--fg);
    font-size: 12px;
    line-height: 1.3;
}

/* ============================================
   NAVIGATION
   ============================================ */

.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: 2px solid var(--fg);
    background: var(--bg);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 64px;
    height: 56px;
    display: flex;
    align-items: center;
}

.nav-left {
    display: flex;
    align-items: center;
}

.logo {
    height: 48px;
    width: auto;
}

.nav-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-link {
    color: var(--fg);
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.nav-link:hover,
.nav-link.active {
    color: #2563eb;
}

.nav-divider {
    color: var(--fg);
    font-size: 14px;
    font-weight: 300;
}

.nav-right {
    margin-left: auto;
}

.nav-link-small {
    color: var(--fg);
    text-decoration: underline;
    font-size: 11px;
}

/* ============================================
   MAIN
   ============================================ */

.main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px 64px;
}

.page-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

/* ============================================
   CONTROLS
   ============================================ */

.controls {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 8px;
}

.control-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-label {
    font-size: 11px;
    font-weight: 500;
}

.control-select {
    font-family: inherit;
    font-size: 12px;
    padding: 4px 8px;
    border: 1px solid var(--fg);
    border-radius: 0;
    background: var(--bg);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    padding-right: 20px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3E%3Cpath d='M0 2l4 4 4-4z' fill='%23000'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 6px center;
}

.control-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tabs {
    display: inline-flex;
}

.tab {
    font-family: inherit;
    font-size: 11px;
    font-weight: 600;
    padding: 8px 16px;
    border: 2px solid var(--fg);
    background: var(--bg);
    cursor: pointer;
}

.tab + .tab {
    margin-left: -2px;
}

.tab.active {
    background: var(--fg);
    color: var(--bg);
}

/* ============================================
   TABLE - EXACT Alpha Arena Style
   ============================================ */

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

.leaderboard-table {
    width: auto;
    border-collapse: collapse;
    border: 2px solid var(--fg);
}

/* Header */
.leaderboard-table thead {
    background: var(--gray-100);
}

.leaderboard-table thead tr {
    border-bottom: 2px solid var(--fg);
}

.leaderboard-table th {
    padding: 2px 4px;
    text-align: left;
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    white-space: nowrap;
    border-right: 2px solid var(--fg);
}

.leaderboard-table th:last-child {
    border-right: none;
}

/* Data rows */
.leaderboard-table tbody tr {
    border-bottom: 1px solid var(--gray-300);
    transition: background-color 0.15s;
}

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

.leaderboard-table tbody tr:hover {
    background: rgba(0, 0, 0, 0.02);
}

.leaderboard-table td {
    padding: 2px 4px;
    font-size: 0.75rem;
    white-space: nowrap;
    border-right: 2px solid var(--fg);
}

.leaderboard-table td:last-child {
    border-right: none;
}

/* Column styles */
.col-rank {
    text-align: center;
    width: 1%;
}

.col-model {
    font-weight: 500;
}

.col-num {
    text-align: right;
    font-variant-numeric: tabular-nums;
    width: 1%;
}

.col-value {
    font-weight: 500;
}

.leaderboard-table th.col-num {
    text-align: left;
}

/* Colors - BOLD for emphasis like Alpha Arena */
.positive {
    color: var(--positive);
    font-weight: 700;
}

.negative {
    color: var(--negative);
    font-weight: 700;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    max-width: 1400px;
    margin: 32px auto 0;
    padding: 16px 64px;
    text-align: center;
    border-top: 1px solid var(--gray-300);
    font-size: 10px;
    color: #666;
}

.tagline {
    margin-top: 4px;
    font-style: italic;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .nav-center {
        display: none;
    }
    
    .logo {
        height: 32px;
    }
    
    .main {
        padding: 16px;
    }
    
    .controls {
        flex-wrap: wrap;
    }
}