/* BGM Player Styles */
.bgm-player {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 280px;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    border: 1px solid var(--bg-glass-dark);
    border-radius: var(--container-border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-glass);
    z-index: 9999;
    font-family: var(--f-pre);
    transition: all var(--transition-base);
    transform: translateY(100px);
    opacity: 0;
    pointer-events: auto; /* iframe 내부에서도 클릭 가능 */
}

.bgm-player.show {
    transform: translateY(0);
    opacity: 1;
}

/* 최소화 상태 */
.bgm-player.minimized {
    width: 30px;
    height: 30px;
    padding: 0;
    border-radius: var(--spacing-sm);
    cursor: pointer;
    background: var(--bg-glass);
    border: 1px solid var(--bg-glass-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.bgm-player.minimized:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.bgm-player.minimized .player-content {
    display: none;
}

.bgm-player.minimized::before {
    content: '♪';
    font-size: 1.25rem;
    color: var(--content-font-color);
}

/* 최소화 상태에서 클릭 가능한 오버레이 */
.minimized-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: inherit;
    display: none;
}

.bgm-player.minimized .minimized-overlay {
    display: block;
}

/* 노래 제목 + 토글 버튼 헤더 */
.track-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.track-info {
    color: var(--content-font-color);
    font-size: 12px;
    font-weight: 400;
    font-family: var(--f-pre);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    line-height: 1.4;
}

.list-toggle-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--bg-glass-dark);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--btn-primary-radius);
    cursor: pointer;
    font-size: 11px;
    font-family: var(--f-pre);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xxs);
    min-width: 20px;
    justify-content: center;
}

.list-toggle-btn:hover {
    background: var(--primary-light);
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.list-toggle-btn.active {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.toggle-icon {
    transition: transform var(--transition-fast);
    font-size: 10px;
}

.list-toggle-btn.active .toggle-icon {
    transform: rotate(180deg);
}

/* 플레이리스트 컨테이너 */
.playlist-container {
    max-height: 160px;
    overflow-y: auto;
    margin-top: var(--spacing-md);
    border-radius: var(--card-border-radius);
    background: var(--bg-glass-dark);
    border: 1px solid var(--bg-glass-dark);
}

.playlist {
    list-style: none;
    padding: 0;
    margin: 0;
}

.playlist li {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    font-size: 12px;
    font-family: var(--f-pre);
    cursor: pointer;
    transition: all var(--transition-fast);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.playlist li:last-child {
    border-bottom: none;
}

.playlist li:hover {
    background: var(--primary-light);
    color: var(--primary-color);
}

.playlist li.current {
    background: var(--primary-color);
    color: var(--white);
    font-weight: 500;
}

/* 플레이어 컨트롤 */
.player-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
}

.bgm-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-right: var(--spacing-sm);
}

.control-btn {
    background: transparent;
    border: none;
    color: rgb(from var(--primary-color) r g b / 60%);
    font-size: 14px;
    cursor: pointer;
    padding: 0;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.control-btn:hover:not(:disabled) {
    color: rgb(from var(--white) r g b / 30%);
    transform: translateY(-2px);
}

.control-btn.play-pause {
    background: transparent;
    color: var(--accent-color);
    border: none;
    font-size: 16px;
}

.control-btn.play-pause:hover {
    transform: translateY(-2px) scale(1.05);
}

.control-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
}

.control-btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* 볼륨 컨트롤 */
.volume-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.volume-icon {
    color: var(--text-secondary);
    font-size: 14px;
    min-width: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.volume-slider {
    flex: 1;
    height: 4px;
    background: var(--border-medium);
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.volume-slider:hover {
    background: var(--primary-light);
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--white);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--shadow-md);
}

.volume-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--white);
    box-shadow: var(--shadow-sm);
}

.volume-value {
    color: var(--text-secondary);
    font-size: 11px;
    font-family: var(--f-pre);
    font-weight: 500;
    min-width: 32px;
    text-align: right;
}

/* 최소화 버튼 */
.minimize-btn {
    position: absolute;
    top: calc(var(--spacing-sm) * 0.8);
    right: calc(var(--spacing-sm) * 0.8);
    /* background: rgb(from var(--accent-color) r g b / 70%); */
    background: transparent;
    background: var(--accent-color);
    /* border: 1px solid var(--bg-glass-dark); */
    border: none;
    color: var(--white);
    font-size: 12px;
    cursor: pointer;
    padding: 0;
    border-radius: var(--btn-primary-radius);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--f-pre);
}

.minimize-btn:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

/* 스크롤바 스타일 */
.playlist-container::-webkit-scrollbar {
    width: 4px;
}

.playlist-container::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: 2px;
}

.playlist-container::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.playlist-container::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* 애니메이션 */
@keyframes slideInUp {
    from { 
        transform: translateY(100px); 
        opacity: 0; 
    }
    to { 
        transform: translateY(0); 
        opacity: 1; 
    }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.bgm-player.minimized:hover {
    animation: pulse 0.6s ease infinite;
}

/* 로딩 상태 */
.track-info.loading::after {
    content: '';
    display: inline-block;
    width: 12px;
    height: 12px;
    margin-left: var(--spacing-xs);
    border: 2px solid var(--border-light);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { 
        transform: rotate(360deg); 
    }
}

/* 포커스 상태 */
.control-btn:focus,
.list-toggle-btn:focus,
.minimize-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.volume-slider:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* 접근성 개선 */
@media (prefers-reduced-motion: reduce) {
    .bgm-player,
    .control-btn,
    .list-toggle-btn,
    .minimize-btn,
    .volume-slider::-webkit-slider-thumb,
    .toggle-icon {
        transition: none;
    }
    
    .bgm-player.minimized:hover {
        animation: none;
    }
}

/* 고해상도 디스플레이 대응 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .bgm-player {
        backdrop-filter: blur(20px);
    }
}