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

:root {
    --bg-color: #0f1419;
    --text-color: #ffffff;
    --card-bg: #1a2332;
    --player-color: #1bd96a;
    --dev-color: #3b9cff;
}

[data-theme="light"] {
    --bg-color: #f5f5f5;
    --text-color: #1a1a1a;
    --card-bg: #ffffff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.3s ease, color 0.3s ease;
    padding: 20px;
}

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 100;
}

#themeBtn {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: transform 0.3s ease;
}

#themeBtn:hover {
    transform: scale(1.1);
}

.sun-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: inline;
}

[data-theme="light"] .moon-icon {
    display: none;
}

.lang-toggle {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 100;
}

#langBtn {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: var(--text-color);
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

#langBtn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.back-btn {
    position: fixed;
    top: 20px;
    left: 90px;
    z-index: 100;
}

.back-btn a {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-color);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    padding: 10px 18px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    transition: all 0.3s ease;
}

[data-theme="light"] .back-btn a {
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.back-btn a:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(-4px);
}

[data-theme="light"] .back-btn a:hover {
    background: rgba(0, 0, 0, 0.08);
}

.container {
    max-width: 900px;
    width: 100%;
}

.header {
    text-align: center;
    margin-bottom: 50px;
}

.title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 12px;
}

.subtitle {
    font-size: 18px;
    opacity: 0.8;
}

.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.doc-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 40px 30px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

[data-theme="light"] .doc-card {
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

.doc-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .doc-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

.doc-card.player {
    border-color: var(--player-color);
}

.doc-card.player:hover {
    background: linear-gradient(135deg, rgba(27, 217, 106, 0.1), transparent);
}

.doc-card.developer {
    border-color: var(--dev-color);
}

.doc-card.developer:hover {
    background: linear-gradient(135deg, rgba(59, 156, 255, 0.1), transparent);
}

.doc-icon {
    font-size: 64px;
    margin-bottom: 20px;
    text-align: center;
}

.doc-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
    text-align: center;
}

.doc-description {
    font-size: 16px;
    opacity: 0.85;
    text-align: center;
    line-height: 1.5;
}

.coming-soon {
    margin-top: 16px;
    padding: 8px 16px;
    background: rgba(255, 193, 7, 0.2);
    border: 1px solid rgba(255, 193, 7, 0.5);
    border-radius: 8px;
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: #ffc107;
}

@media (max-width: 768px) {
    .title {
        font-size: 32px;
    }
    
    .subtitle {
        font-size: 16px;
    }
    
    .docs-grid {
        grid-template-columns: 1fr;
    }
}