/* ============================================================
   WalkCraft - Shared Styles
   Harmonized CSS for index.html and leaderboard.html
   ============================================================ */

/* ── Reset & Base ───────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Primary palette — index.html / game theme */
    --bg-primary: #2c3e50;
    --bg-secondary: #34495e;
    --bg-card: #1a252f;
    --accent: #f1c40f;
    --accent-hover: #f39c12;
    --text-primary: #ecf0f1;
    --text-secondary: #bdc3c7;
    --text-muted: #95a5a6;
    --border: #34495e;
    --gold: #ffd700;
    --silver: #c0c0c0;
    --bronze: #cd7f32;

    /* Difficulty badge colors */
    --diff-easy-bg: #2d6a4f;
    --diff-easy-text: #95d5b2;
    --diff-medium-bg: #e07a2f;
    --diff-medium-text: #ffe0b2;
    --diff-hard-bg: #9b2226;
    --diff-hard-text: #ffb3b3;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* ============================================================
   INDEX.HTML — Game Page Styles
   ============================================================ */

.game-container {
    display: flex;
    flex-direction: row;
    gap: 20px;
    align-items: start;
    justify-content: center;
    height: 100vh;
    overflow: hidden;
}

canvas {
    border: 4px solid var(--bg-secondary);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    image-rendering: pixelated;
    background-color: #000;
    max-width: 85vw;
    max-height: 90vh;
}

#game-legend {
    width: 260px;
    background-color: rgba(44, 62, 80, 0.9);
    border: 3px solid var(--bg-secondary);
    border-radius: 8px;
    padding: 20px;
    color: var(--text-primary);
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
    user-select: none;
}

#game-legend h2 {
    margin: 0 0 10px 0;
    font-size: 20px;
    color: var(--accent);
    text-transform: uppercase;
    border-bottom: 2px solid var(--bg-secondary);
    padding-bottom: 5px;
}

.legend-info {
    margin-bottom: 20px;
    font-size: 16px;
    color: var(--text-secondary);
}

.legend-item {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
    gap: 12px;
    font-size: 14px;
}

.legend-icon {
    width: 20px;
    height: 20px;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.33);
    display: flex;
    justify-content: center;
    align-items: center;
}

.legend-footer {
    margin-top: 20px;
    font-size: 12px;
    font-style: italic;
    color: var(--text-secondary);
    border-top: 1px solid var(--bg-secondary);
    padding-top: 10px;
}

/* ============================================================
   LEADERBOARD.HTML — Leaderboard Page Styles
   ============================================================ */

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--border);
}

header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

header h1 span {
    color: var(--accent);
}

header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.nav-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.4rem;
    background: var(--bg-card);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: background 0.2s, transform 0.15s;
    border: 1px solid var(--border);
}

.nav-links a:hover {
    background: var(--accent);
    color: var(--bg-primary);
    transform: translateY(-1px);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    text-align: center;
}

.stat-card .label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.stat-card .value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent);
}

/* Filter Bar */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.filter-bar label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.filter-bar select,
.filter-bar input {
    padding: 0.5rem 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

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

.filter-bar button {
    padding: 0.5rem 1.2rem;
    background: var(--accent);
    color: var(--bg-primary);
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.filter-bar button:hover {
    background: var(--accent-hover);
}

/* Leaderboard Table */
.leaderboard {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

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

.leaderboard-table thead {
    background: var(--bg-secondary);
}

.leaderboard-table th {
    padding: 0.85rem 1rem;
    text-align: left;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    font-weight: 700;
}

.leaderboard-table td {
    padding: 0.85rem 1rem;
    border-top: 1px solid var(--border);
    font-size: 0.95rem;
}

.leaderboard-table tbody tr {
    transition: background 0.15s;
}

.leaderboard-table tbody tr:hover {
    background: rgba(241, 196, 15, 0.08);
}

/* Rank column */
.rank {
    font-weight: 800;
    text-align: center;
    width: 50px;
}

.rank-1 { color: var(--gold); font-size: 1.3rem; }
.rank-2 { color: var(--silver); font-size: 1.2rem; }
.rank-3 { color: var(--bronze); font-size: 1.1rem; }

.score-cell {
    font-weight: 700;
    color: var(--accent);
    font-variant-numeric: tabular-nums;
}

.difficulty-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.difficulty-EASY {
    background: var(--diff-easy-bg);
    color: var(--diff-easy-text);
}

.difficulty-MEDIUM {
    background: var(--diff-medium-bg);
    color: var(--diff-medium-text);
}

.difficulty-HARD {
    background: var(--diff-hard-bg);
    color: var(--diff-hard-text);
}

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--text-muted);
}

.empty-state .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* Loading / Error */
.status-msg {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-secondary);
}

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

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    border-top: 1px solid var(--border);
}

.pagination button {
    padding: 0.5rem 1.2rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

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

.pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination span {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.85rem;
}

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

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

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 640px) {
    header h1 { font-size: 1.8rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .filter-bar { flex-direction: column; align-items: stretch; }
    .leaderboard-table th:nth-child(4),
    .leaderboard-table td:nth-child(4),
    .leaderboard-table th:nth-child(5),
    .leaderboard-table td:nth-child(5) {
        display: none;
    }
}