/* ============================================================
   MUSIC-PLAYER.CSS — nút nhạc nền + thanh tua (music-player.js)
   Dùng chung cho index.html và admin.html nên màu có giá trị dự phòng.
   ============================================================ */
.music-player {
    position: fixed;
    bottom: 25px;
    left: 25px;
    z-index: 99999;
    display: flex;
    align-items: center;
}

.music-toggle-btn {
    flex-shrink: 0;
    background: var(--bg-card, #FFFDF7);
    color: var(--gold, #B84A2B);
    border: 1px solid var(--gold, #B84A2B);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(74,52,41,0.20);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: background 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
    animation: spinMusic 4s linear infinite;
    animation-play-state: paused;
}

.music-toggle-btn.playing {
    animation-play-state: running;
    background: var(--gold, #B84A2B);
    color: #FFFDF7;
    box-shadow: 0 5px 15px rgba(184,74,43,0.4);
}

@keyframes spinMusic {
    100% { transform: rotate(360deg); }
}

/* Thanh tua: ẩn, hiện ra bên phải nút khi rê chuột / chạm vào khu vực nhạc */
.music-panel {
    margin-left: 10px;
    width: 220px;
    padding: 10px 14px;
    background: var(--bg-card, #FFFDF7);
    border: 1px solid var(--border-color, #E6D7BC);
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(74,52,41,0.18);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}
.music-player:hover .music-panel,
.music-player:focus-within .music-panel {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.music-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-main, #171513);
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.music-title i { color: var(--gold, #B84A2B); margin-right: 4px; }

.music-seek {
    --progress: 0%;
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 4px;
    background: linear-gradient(to right, var(--gold, #B84A2B) var(--progress), var(--border-color, #E6D7BC) var(--progress));
    outline: none;
    cursor: pointer;
    margin: 0;
}
.music-seek::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--gold, #B84A2B);
    border: 2px solid #FFFDF7;
    box-shadow: 0 1px 4px rgba(23,21,19,0.3);
}
.music-seek::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--gold, #B84A2B);
    border: 2px solid #FFFDF7;
}

.music-time {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: 0.72rem;
    color: var(--text-muted, #4A3429);
    font-variant-numeric: tabular-nums;
}

@media (max-width: 768px) {
    .music-player { bottom: 85px; left: 20px; }
    .music-toggle-btn { width: 42px; height: 42px; font-size: 1rem; }
    .music-panel { width: 180px; }
}