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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #1a1a2e;
    color: #eee;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: #fff;
}

.subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #aaa;
    margin-bottom: 16px;
}

.btn {
    display: block;
    width: 100%;
    padding: 18px 24px;
    font-size: 1.1rem;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    color: #fff;
    background: #4a4a6a;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: background 0.2s;
}

.btn:hover {
    background: #5a5a7a;
}

.btn:active {
    background: #3a3a5a;
}

.btn-back {
    background: #333;
    font-size: 1rem;
    padding: 14px 20px;
}

.btn-back:hover {
    background: #444;
}

.player-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    margin-top: 20px;
}

.now-playing {
    text-align: center;
}

.now-playing .part {
    font-size: 1rem;
    color: #aaa;
    margin-bottom: 8px;
}

.now-playing .song {
    font-size: 1.4rem;
    font-weight: 600;
}

audio {
    width: 100%;
    max-width: 350px;
}

.section-label {
    font-size: 0.9rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 8px;
}