body {
    margin: 0;
    font-family: "Poppins", sans-serif;
    background: #0a0a0a;
    color: #fff;
    text-align: center;
    overflow-y: hidden; /* Oculta el scroll vertical */
}

.screen {
    padding: 20px;
    animation: fadeIn 0.4s ease;
}

.back-button {
    background: #7a0000;
    border: none;
    padding: 10px 18px;
    font-size: 16px;
    color: white;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.3s;
}

.back-button:hover {
    background: #b80000;
}

.content-title {
    margin-top: 10px;
    font-size: 28px;
    text-shadow: 0 0 10px #ff000095;
}

.playlist-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    padding: 20px;
    max-width: 1100px;
    margin: auto;
}

.playlist-card {
    background: #111;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 0 15px #ff000020;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    text-align: center;
}

.playlist-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 20px #ff000060;
}

.playlist-card h3 {
    margin-bottom: 10px;
    font-size: 22px;
    color: #ff5555;
}

.spotify-embed {
    width: 100%;
    height: 352px;
    border-radius: 10px;
    border: none;
    margin-bottom: 15px;
}

.action-button {
    display: inline-block;
    background: #9b0000;
    color: white;
    padding: 10px 14px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s;
}

.action-button:hover {
    background: #ff0000;
    box-shadow: 0 0 10px #ff0000;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}