:root {
    --bg-primary: #0f1419;
    --bg-secondary: #1a1f29;
    --bg-card: #1e2633;
    --text-primary: #e8eaed;
    --text-secondary: #9aa0a6;
    --accent-primary: #8ab4f8;
    --accent-secondary: #f28b82;
    --accent-geo: #38bdf8;
    --accent-gomoku: #f59e0b;
    --accent-sudoku: #a78bfa;
    --accent-minesweeper: #ef4444;
    --accent-sliding: #10b981;
    --accent-checkers: #fb923c;
    --accent-othello: #4ade80;
    --accent-mancala: #8B4513;
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(138, 180, 248, 0.3);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
    overflow-x: hidden;
}

/* Animated background */
body::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(138, 180, 248, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: backgroundMove 60s linear infinite;
    z-index: 0;
}

@keyframes backgroundMove {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(50px, 50px);
    }
}

.container {
    max-width: 1200px;
    width: 100%;
    position: relative;
    z-index: 1;
}

.lang-switcher {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    animation: fadeIn 0.6s ease;
}

.lang-btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border: 2px solid rgba(138, 180, 248, 0.3);
    background: var(--bg-card);
    color: var(--text-secondary);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 3rem;
}

.lang-btn:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.lang-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.6s ease;
}

h1 {
    font-size: 4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.game-card {
    background: var(--bg-card);
    border-radius: 1.5rem;
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
    /* backdrop-filter: blur(10px); */
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease;
    animation-fill-mode: both;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.game-card:nth-child(1) {
    animation-delay: 0.1s;
}

.game-card:nth-child(2) {
    animation-delay: 0.2s;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--card-accent), transparent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.game-card.geo {
    --card-accent: var(--accent-geo);
}

.game-card.gomoku {
    --card-accent: var(--accent-gomoku);
}

.game-card.sudoku {
    --card-accent: var(--accent-sudoku);
}

.game-card.minesweeper {
    --card-accent: var(--accent-minesweeper);
}

.game-card.sliding {
    --card-accent: var(--accent-sliding);
}

.game-card.checkers {
    --card-accent: var(--accent-checkers);
}

.game-card.othello {
    --card-accent: var(--accent-othello);
}

.game-card.mancala {
    --card-accent: var(--accent-mancala);
}

.game-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(138, 180, 248, 0.3);
}

.game-card:hover::before {
    transform: scaleX(1);
}

.game-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    display: block;
}

.game-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.game-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.game-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.game-features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.game-features li::before {
    content: '✓';
    color: var(--card-accent);
    font-weight: bold;
}

.play-button {
    background: linear-gradient(135deg, var(--card-accent), var(--accent-secondary));
    color: white;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 1.1rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    border: none;
    cursor: pointer;
}


footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    animation: fadeIn 0.6s ease 0.4s both;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1rem;
    }

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

    .game-card {
        padding: 2rem;
    }
}

/* Consent Dialog Modal */
.consent-dialog {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    animation: fadeIn 0.3s ease;
}

.consent-content {
    background: var(--bg-secondary);
    border-radius: 1rem;
    padding: 2rem;
    max-width: 500px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: slideUp 0.3s ease;
}

.consent-content h3 {
    margin: 0 0 1rem 0;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.consent-content p {
    margin: 0 0 1.5rem 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

.consent-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.btn-accept,
.btn-reject {
    flex: 1;
    min-width: 120px;
    padding: 0.875rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.btn-accept {
    background: var(--accent-primary);
    color: white;
}

.btn-accept:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-reject {
    background: transparent;
    border: 2px solid var(--text-secondary);
    color: var(--text-secondary);
}

.btn-reject:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 640px) {
    .consent-content {
        padding: 1.5rem;
    }

    .consent-buttons {
        flex-direction: column;
    }

    .btn-accept,
    .btn-reject {
        width: 100%;
    }
}