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

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f5f5f0;
    color: #222;
    font-size: 20px;
    padding-bottom: 120px;
}

header {
    background: #8b0000;
    color: white;
    padding: 24px;
    text-align: center;
}

header h1 {
    font-size: 32px;
    margin-bottom: 8px;
}

header p {
    font-size: 18px;
    opacity: 0.9;
}

.tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    padding: 16px;
    background: #fff;
    border-bottom: 2px solid #ddd;
    flex-wrap: wrap;
}

.tab {
    font-size: 20px;
    padding: 14px 22px;
    border: none;
    border-radius: 10px;
    background: #e0e0e0;
    color: #333;
    cursor: pointer;
    min-width: 140px;
}

.tab.active {
    background: #8b0000;
    color: white;
}

#song-list {
    max-width: 800px;
    margin: 20px auto;
    padding: 0 16px;
}

.song {
    background: white;
    border-radius: 14px;
    padding: 18px 20px;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.08);
}

.song-info {
    flex: 1;
}

.song-title {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 4px;
}

.song-artist {
    font-size: 17px;
    color: #555;
}

.actions {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
}

.btn {
    font-size: 22px;
    padding: 12px 16px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    min-width: 52px;
}

.btn-play {
    background: #2e7d32;
    color: white;
}

.btn-fav {
    background: #fff;
    border: 2px solid #ccc;
}

.btn-fav.active {
    background: #c62828;
    color: white;
    border-color: #c62828;
}

.btn-del {
    background: #757575;
    color: white;
}

.btn-restore {
    background: #1565c0;
    color: white;
}

.btn-destroy {
    background: #c62828;
    color: white;
}

.view-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.btn-download-all {
    background: #1565c0;
    color: white;
    min-width: 180px;
    font-size: 18px;
}

.btn-download-folder {
    background: #2e7d32;
    color: white;
    min-width: 180px;
    font-size: 18px;
}

#player-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #fff;
    border-top: 2px solid #ccc;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 16px;
    z-index: 100;
}

#now-playing {
    font-size: 16px;
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#audio {
    width: 100%;
    max-width: 500px;
}

.loading, .empty {
    text-align: center;
    padding: 40px;
    font-size: 20px;
    color: #666;
}

@media (max-width: 600px) {
    body { font-size: 18px; }
    .song { flex-direction: column; align-items: flex-start; }
    .actions { width: 100%; justify-content: flex-end; }
    .song-title { font-size: 20px; }
}