:root {
    --bg-black: #121212;
    --main-red: #D32F2F;
    --accent-yellow: #FFD700;
}

body {
    background-color: var(--bg-black);
    color: white;
    font-family: Arial, sans-serif;
}

/* Hiển thị Responsive cực mượt */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    padding: 20px;
}

/* Thiết kế Card */
.card {
    background-color: #1e1e1e;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid #333;
}

/* Hiệu ứng mượt: hover sáng vàng + nổi lên */
.card:hover {
    box-shadow: 0 0 20px var(--accent-yellow);
    transform: translateY(-5px);
    border-color: var(--accent-yellow);
}

.btn-play {
    background-color: var(--main-red);
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    display: inline-block;
}

.btn-play:hover {
    background-color: var(--accent-yellow);
    color: var(--bg-black);
}