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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 1200px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header & Footer */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    text-align: center;
    position: relative;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header .subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

.back-link {
    position: absolute;
    left: 2rem;
    top: 2rem;
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    transition: background 0.3s ease;
}

.back-link:hover {
    background: rgba(255, 255, 255, 0.3);
}

footer {
    background: #f5f5f5;
    color: #666;
    text-align: center;
    padding: 1.5rem;
    border-top: 1px solid #e0e0e0;
    margin-top: auto;
}

/* Main Content */
main {
    flex: 1;
    padding: 2rem;
}

/* Landing Page - Games Grid */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 1rem 0;
}

.game-card {
    text-decoration: none;
    color: inherit;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    cursor: pointer;
}

.game-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.game-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.game-card h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #333;
}

.game-card p {
    font-size: 1rem;
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.play-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 0.8rem 2rem;
    font-size: 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.play-btn:hover {
    opacity: 0.9;
}

/* Buttons */
.btn {
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: opacity 0.3s ease;
    font-weight: 600;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-secondary {
    background: #e0e0e0;
    color: #333;
}

.btn-secondary:hover {
    background: #d0d0d0;
}

.btn:active {
    transform: scale(0.98);
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.8rem;
    }

    header {
        padding: 1.5rem;
    }

    main {
        padding: 1rem;
    }

    .back-link {
        position: relative;
        left: auto;
        top: auto;
        display: inline-block;
        margin-bottom: 1rem;
    }

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

    .game-card {
        padding: 1.5rem;
    }

    .game-icon {
        font-size: 3rem;
    }

    .game-card h2 {
        font-size: 1.5rem;
    }

    .container {
        margin: 1rem;
        min-height: auto;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5rem;
        margin-bottom: 0.25rem;
    }

    header .subtitle {
        font-size: 0.9rem;
    }

    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
}