/* Battle of the Classes Leaderboard – theme variables and layout */

:root {
    --bg-color: #f8fafc;
    --text-color: #0f172a;
    --card-bg: rgba(255, 255, 255, 0.95);
    --border-color: rgba(0, 0, 0, 0.08);
    --shadow-color: rgba(0, 0, 0, 0.08);
    --chart-bg: #ffffff;
    --activity-border: #e2e8f0;
    --text-secondary: #64748b;
    --accent: #0ea5e9;
}

/* Modern dark theme (inspired by gessaman.com/meshcore/bot/) */
[data-theme="dark"] {
    --bg-color: #0c0c0e;
    --text-color: #f1f5f9;
    --card-bg: #16161a;
    --border-color: rgba(255, 255, 255, 0.06);
    --shadow-color: rgba(0, 0, 0, 0.4);
    --chart-bg: #16161a;
    --activity-border: rgba(255, 255, 255, 0.08);
    --text-secondary: #94a3b8;
    --accent: #22d3ee;
    --card-glow: rgba(34, 211, 238, 0.08);
}

body {
    font-family: 'Lexend', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Fixed action buttons (About, theme toggle) */
.theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    padding: 0.5rem;
    border-radius: 50%;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    cursor: pointer;
    z-index: 100;
    box-shadow: 0 2px 8px var(--shadow-color);
    transition: all 0.25s ease;
    opacity: 1;
    visibility: visible;
}

[data-theme="dark"] .theme-toggle {
    box-shadow: 0 2px 12px var(--shadow-color), 0 0 0 1px rgba(34, 211, 238, 0.1);
}

@media (max-width: 768px) {
    .theme-toggle {
        top: auto;
        bottom: 1rem;
        transform: translateY(0);
    }
    .theme-toggle.hidden {
        transform: translateY(200%);
        opacity: 0;
        visibility: hidden;
    }
}

/* Team / podium cards */
.team-card {
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
}

.team-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px var(--shadow-color);
}

[data-theme="dark"] .team-card:hover {
    box-shadow: 0 12px 24px var(--shadow-color), 0 0 24px var(--card-glow);
}

.podium-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin: 0 auto 1rem;
    perspective: 1200px;
    position: relative;
    clear: both;
    width: 100%;
    padding: 0 0.5rem;
}

@media (max-width: 768px) {
    .podium-container {
        grid-template-columns: 1fr;
        padding: 1rem;
        margin-bottom: 3rem;
    }
}

.podium-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    opacity: 0;
    position: relative;
    z-index: 1;
}

.podium-rank {
    text-align: center;
    padding: 12px;
    width: 100%;
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 8px 24px var(--shadow-color);
    margin-bottom: 8px;
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 140px;
    position: relative;
    transition: all 0.25s ease;
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .podium-rank {
    box-shadow: 0 8px 24px var(--shadow-color), 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.podium-rank:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px var(--shadow-color);
}

[data-theme="dark"] .podium-rank:hover {
    box-shadow: 0 12px 28px var(--shadow-color), 0 0 32px var(--card-glow);
}

.podium-rank-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 8px;
    border-radius: 16px 16px 0 0;
    color: #f8fafc;
    font-weight: 600;
}

.rank-number {
    position: absolute;
    top: 0.5rem;
    left: 1rem;
    font-size: 1rem;
    font-weight: bold;
    color: rgba(248, 250, 252, 0.9);
}

.team-letter {
    position: absolute;
    top: 0.5rem;
    right: 1rem;
    font-size: 1rem;
    font-weight: bold;
    color: rgba(248, 250, 252, 0.9);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.podium-rank:hover .team-letter {
    opacity: 1;
}

.rank-medal {
    position: absolute;
    top: 3rem;
    right: 1rem;
    font-size: 1.25rem;
}

.points-value {
    font-size: 5rem;
    font-weight: bold;
    margin: 1rem 0;
    margin-top: 3rem;
    color: var(--text-color);
}

/* Chart container */
.chart-container {
    clear: both;
    width: 100%;
    height: 450px;
    margin: 2rem auto;
    padding: 1.5rem;
    background: var(--chart-bg);
    border-radius: 16px;
    box-shadow: 0 8px 24px var(--shadow-color);
    position: relative;
    z-index: 0;
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .chart-container {
    box-shadow: 0 8px 24px var(--shadow-color), 0 0 0 1px rgba(255, 255, 255, 0.04);
}

@media (max-width: 768px) {
    .chart-container {
        height: 350px;
        padding: 1rem;
        margin-top: 4rem;
        width: 95%;
    }
}

/* Activity grid and cards */
.activity-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin: 1rem auto;
    width: 100%;
}

@media (max-width: 768px) {
    .activity-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.activity-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 8px 24px var(--shadow-color);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    transition: all 0.25s ease;
    position: relative;
}

[data-theme="dark"] .activity-card {
    box-shadow: 0 8px 24px var(--shadow-color), 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.activity-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px var(--shadow-color);
}

[data-theme="dark"] .activity-card:hover {
    box-shadow: 0 12px 28px var(--shadow-color), 0 0 24px var(--card-glow);
}

.activity-list {
    margin-top: 1rem;
}

.activity-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--activity-border);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 8px;
    border-radius: 16px 16px 0 0;
    color: #f8fafc;
    font-weight: 600;
    text-align: center;
}

.text-right {
    float: right;
    font-weight: 500;
    color: var(--text-secondary);
}

/* Utility: secondary text color for theme-aware elements */
.text-secondary,
#lastUpdated {
    color: var(--text-secondary);
}

[data-theme="dark"] h1 {
    color: var(--text-color);
}

/* Floating action buttons (About, theme toggle) – use theme variables */
.floating-action {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    box-shadow: 0 2px 8px var(--shadow-color);
}

.floating-action:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px var(--shadow-color);
}

[data-theme="dark"] .floating-action {
    box-shadow: 0 2px 12px var(--shadow-color), 0 0 0 1px rgba(34, 211, 238, 0.08);
}

[data-theme="dark"] .floating-action:hover {
    box-shadow: 0 8px 24px var(--shadow-color), 0 0 20px var(--card-glow);
}