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

:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #0f3460;
    --text-primary: #eaeaea;
    --text-secondary: #a0a0a0;
    --accent: #e94560;
    --accent-light: #ff6b6b;
    --success: #4ade80;
    --border: #2a3a5a;
    --white-player: #f0f0f0;
    --black-player: #333;
    --gold: #d4a855;
    --gold-bg: rgba(212, 168, 85, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar */
.navbar {
    background-color: var(--bg-secondary);
    padding: 1rem 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.nav-brand a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    flex: 1;
}

/* Page header */
.page-header {
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2rem;
    margin-bottom: 0;
}

.subtitle {
    color: var(--text-secondary);
    text-align: center;
}

/* Page navigation tabs */
.page-nav {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 0.5rem;
}

.page-nav h1.active {
    color: var(--text-primary);
}

.page-nav-link {
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent-light);
    text-decoration: none;
    transition: color 0.2s;
    position: relative;
}

.page-nav-link:hover {
    color: var(--text-primary);
}

.page-nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: width 0.2s;
}

.page-nav-link:hover::after {
    width: 100%;
}

.back-link {
    color: var(--accent-light);
    text-decoration: none;
    display: inline-block;
    margin-bottom: 1rem;
}

.back-link:hover {
    text-decoration: underline;
}

/* Tables */
.leaderboard-table,
.games-table {
    width: 100%;
    table-layout: fixed;
    border-collapse: collapse;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
}

.leaderboard-table th,
.leaderboard-table td,
.games-table th,
.games-table td {
    padding: 1rem;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.leaderboard-table th,
.games-table th {
    background-color: var(--bg-card);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.leaderboard-table tbody tr:hover,
.games-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.leaderboard-table tbody tr.clickable-row,
.games-table tbody tr.clickable-row {
    cursor: pointer;
}

.leaderboard-table tbody tr.clickable-row:hover,
.games-table tbody tr.clickable-row:hover {
    background-color: rgba(233, 69, 96, 0.15);
}

.leaderboard-table tr.anchor {
    background-color: rgba(233, 69, 96, 0.1);
}

.leaderboard-table tr.top-llm {
    background-color: var(--gold-bg);
}

.leaderboard-table tr.top-llm:hover {
    background-color: rgba(212, 168, 85, 0.3);
}

.leaderboard-table tr.unreliable {
    opacity: 0.5;
}

.leaderboard-table tr.unreliable:hover {
    opacity: 0.7;
}

.unreliable-indicator {
    opacity: 0.5;
    font-weight: bold;
}

/* Leaderboard specific */
.rank {
    font-weight: bold;
    width: 50px;
}

.player {
    font-weight: 500;
    width: 140px;
}

.anchor-badge {
    color: var(--accent);
}

.crown-badge {
    margin-left: 0.5rem;
}

.rating {
    font-weight: bold;
    color: var(--success);
}

/* Sortable headers */
.sortable {
    cursor: pointer;
    user-select: none;
    transition: color 0.2s;
}

.sortable:hover {
    color: var(--accent-light);
}

.sortable.sorted {
    color: var(--accent);
}

.sort-arrow {
    margin-left: 0.25rem;
}

.legend {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.legend p {
    margin: 0.25rem 0;
}

.legend a {
    color: var(--accent-light);
    text-decoration: none;
}

.legend a:hover {
    text-decoration: underline;
}

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

.search-input,
.filter-select {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
}

.search-input {
    flex: 1;
    max-width: 300px;
}

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

.games-table .winner {
    color: var(--success);
}

.games-table .loser {
    color: var(--accent-light);
}

.view-btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.875rem;
    transition: background-color 0.2s;
}

.view-btn:hover {
    background-color: var(--accent-light);
}

/* Game Page Layout */
.game-page {
    max-width: 1400px;
    margin: 0 auto;
}

.game-header {
    margin-bottom: 1.5rem;
}

.game-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.game-title-row h1 {
    font-size: 1.75rem;
    margin: 0;
}

.game-title-row .vs {
    color: var(--text-secondary);
    font-weight: normal;
    font-size: 1.25rem;
}

.game-result {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.result-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.game-layout {
    display: grid;
    grid-template-columns: minmax(480px, 560px) minmax(350px, 1fr);
    gap: 2rem;
    align-items: start;
    max-width: 1100px;
}

/* Board Column */
.board-column {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.board-wrapper {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.board-wrapper #board {
    width: 100% !important;
}

/* Board Toolbar */
.board-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 0.5rem;
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.15s;
}

.nav-btn:hover {
    background: var(--bg-card);
}

.nav-btn:active {
    transform: scale(0.95);
}

.move-counter {
    padding: 0 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-family: 'Consolas', 'Monaco', monospace;
}

.flip-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 6px;
    font-size: 0.875rem;
    transition: all 0.15s;
}

.flip-btn:hover {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--accent);
}

/* Analysis Button */
.analysis-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--accent);
    background: transparent;
    color: var(--accent);
    cursor: pointer;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.2s;
}

.analysis-btn:hover {
    background: var(--accent);
    color: white;
}

.analysis-btn.active {
    background: var(--accent);
    color: white;
}

/* Info Column */
.info-column {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-width: 0;
    max-width: 100%;
    overflow: hidden;
}

/* Game Meta */
.game-meta {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 1rem;
    min-width: 0;
}

.meta-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.meta-item.illegal {
    grid-column: 1 / -1;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
}

.meta-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.meta-value {
    font-size: 0.95rem;
    color: var(--text-primary);
    word-break: break-word;
}

.meta-value.player-white,
.meta-value.player-black {
    color: var(--text-primary);
}

.player-link {
    text-decoration: none;
    transition: opacity 0.15s;
}

.player-link:hover {
    opacity: 0.8;
    text-decoration: underline;
}

/* Moves Panel */
.moves-panel {
    background: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 200px;
    min-width: 0;
}

.panel-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
}

.panel-header h3 {
    margin: 0;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.moves-container {
    flex: 1;
    max-height: 350px;
    overflow-y: auto;
    padding: 0.5rem;
}

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

.moves-table td {
    padding: 0.35rem 0.5rem;
}

.move-num {
    color: var(--text-secondary);
    width: 40px;
    font-size: 0.85rem;
}

.move {
    cursor: pointer;
    padding: 0.35rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

.move:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.move.current {
    background-color: var(--accent);
    color: white;
}

/* PGN Panel */
.pgn-panel {
    background: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
    min-width: 0;
    width: 100%;
    max-width: 100%;
}

.pgn-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.75rem 1rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.15s;
}

.pgn-toggle:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.pgn-chevron {
    transition: transform 0.2s;
}

.pgn-toggle.expanded .pgn-chevron {
    transform: rotate(90deg);
}

.pgn-content {
    border-top: 1px solid var(--border);
    padding: 1rem;
    position: relative;
    width: 100%;
    box-sizing: border-box;
}

.pgn-text {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.8rem;
    white-space: pre;
    background-color: var(--bg-card);
    padding: 1rem;
    border-radius: 4px;
    overflow: auto;
    margin: 0 0 0.75rem 0;
    max-height: 200px;
    width: 0;
    min-width: 100%;
    box-sizing: border-box;
    display: block;
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 4px;
    font-size: 0.8rem;
    transition: all 0.15s;
}

.copy-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.result-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-weight: bold;
    margin-right: 0.5rem;
}

.result-badge.white-win {
    background-color: var(--white-player);
    color: var(--bg-primary);
}

.result-badge.black-win {
    background-color: var(--black-player);
    color: white;
}

.result-badge.draw {
    background-color: var(--text-secondary);
    color: var(--bg-primary);
}


/* Footer */
.footer {
    background-color: var(--bg-secondary);
    padding: 1rem 2rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-top: 1px solid var(--border);
}

.footer a {
    color: var(--accent-light);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    padding: 1rem 0;
}

.pagination-btn {
    padding: 0.5rem 1rem;
    background-color: var(--bg-secondary);
    color: var(--accent-light);
    text-decoration: none;
    border-radius: 4px;
    border: 1px solid var(--border);
    font-size: 0.875rem;
    transition: all 0.2s;
}

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

.pagination-btn.disabled {
    color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.5;
}

.pagination-info {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Methodology page */
.methodology-content {
    max-width: 800px;
}

.methodology-section {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.methodology-section p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.methodology-section p:last-child {
    margin-bottom: 0;
}

.methodology-section ul {
    margin-left: 1.5rem;
    color: var(--text-secondary);
}

.methodology-section li {
    margin-bottom: 0.5rem;
}

.methodology-section a {
    color: var(--accent-light);
    text-decoration: none;
}

.methodology-section a:hover {
    text-decoration: underline;
}

/* Analysis Panel */
.analysis-panel {
    background: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.analysis-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 1rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
}

.analysis-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.analysis-depth {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: 'Consolas', 'Monaco', monospace;
}

.analysis-content {
    padding: 0.75rem;
    display: flex;
    gap: 0.75rem;
}

.eval-bar-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    gap: 0.25rem;
    flex-shrink: 0;
    align-self: stretch;
}

.eval-bar {
    width: 24px;
    flex: 1;
    background-color: var(--black-player);
    border-radius: 3px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border);
}

.eval-bar-fill {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background-color: var(--white-player);
    transition: height 0.3s ease;
}

.eval-score {
    font-size: 0.85rem;
    font-weight: bold;
    font-family: 'Consolas', 'Monaco', monospace;
    color: var(--text-primary);
    text-align: center;
}

.analysis-lines {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    flex: 1;
    min-width: 0;
}

.analysis-line {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    padding: 0.5rem 0.6rem;
    background-color: var(--bg-card);
    border-radius: 4px;
    font-size: 0.8rem;
    border-left: 3px solid transparent;
}

.analysis-line:first-child {
    background-color: rgba(74, 222, 128, 0.08);
    border-left-color: var(--success);
}

.line-score {
    font-weight: 600;
    font-family: 'Consolas', 'Monaco', monospace;
    min-width: 50px;
    color: var(--success);
    flex-shrink: 0;
}

.analysis-line:not(:first-child) .line-score {
    color: var(--text-secondary);
}

.line-pv {
    color: var(--text-secondary);
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.8rem;
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.analysis-line:first-child .line-pv {
    color: var(--text-primary);
}

.analysis-loading,
.analysis-error {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.analysis-error {
    color: var(--accent);
}

/* Responsive */
@media (max-width: 1024px) {
    .game-layout {
        grid-template-columns: 1fr;
        max-width: 560px;
        margin: 0 auto;
    }

    .info-column {
        order: 2;
    }

    .board-column {
        order: 1;
    }
}

@media (max-width: 768px) {
    .game-title-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .game-title-row h1 {
        font-size: 1.4rem;
    }

    .game-layout {
        max-width: 100%;
    }

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

    .filters {
        flex-direction: column;
    }

    .search-input {
        max-width: 100%;
    }

    .leaderboard-table,
    .games-table {
        display: block;
        overflow-x: auto;
    }
}