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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #000000;
    min-height: 100vh;
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #ffffff;
}

.container {
    max-width: 1200px;
    width: 100%;
    background: #1a1a1a;
    border-radius: 6px;
    padding: 32px 40px;
    margin-top: 20px;
}

h1 {
    text-align: center;
    color: #ffffff;
    margin-bottom: 12px;
    font-size: 22px;
    font-weight: 500;
    letter-spacing: 0.3px;
}

.description {
    text-align: center;
    color: #999;
    font-size: 13px;
    margin-bottom: 32px;
    line-height: 1.5;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.main-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
    margin-bottom: 32px;
    padding: 24px;
    background: #0f0f0f;
    border-radius: 6px;
    flex-wrap: wrap;
}

.controls {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}

.btn {
    padding: 14px 26px;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid #333;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: #2a2a2a;
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 52px;
}
.btn-icon {
    width: 16px;
    height: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: -2px; /* 让图标稍向左，文字更居中 */
}

.btn-icon svg {
    width: 16px;
    height: 16px;
}

.btn:hover {
    background: #3a3a3a;
    border-color: #444;
}

.btn:active {
    background: #1a1a1a;
}

.crossfade-settings {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 180px;
}

.setting-group label {
    font-size: 11px;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.select-input {
    padding: 8px 12px;
    font-size: 13px;
    background: #2a2a2a;
    border: 1px solid #333;
    border-radius: 4px;
    color: #ffffff;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.select-input:hover {
    border-color: #444;
}

.select-input:focus {
    outline: none;
    border-color: #555;
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.slider {
    flex: 1;
    height: 4px;
    background: #2a2a2a;
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: #ffffff;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.2s ease;
}

.slider::-webkit-slider-thumb:hover {
    background: #e0e0e0;
}

.slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: #ffffff;
    border-radius: 50%;
    cursor: pointer;
    border: none;
    transition: background 0.2s ease;
}

.slider::-moz-range-thumb:hover {
    background: #e0e0e0;
}

.number-input {
    width: 65px;
    padding: 8px;
    font-size: 13px;
    background: #2a2a2a;
    border: 1px solid #333;
    border-radius: 4px;
    color: #ffffff;
    text-align: center;
    transition: border-color 0.2s ease;
}

.number-input:hover {
    border-color: #444;
}

.number-input:focus {
    outline: none;
    border-color: #555;
}

.track-section {
    margin-bottom: 0;
}

.track-selector-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.track-selector {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    flex: 1;
}

.btn-track {
    background: #2a2a2a;
    border: 1px solid #333;
    padding: 10px 20px;
    font-size: 13px;
    min-width: 130px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-track:hover {
    background: #3a3a3a;
    border-color: #444;
}

.btn-track.active {
    background: #ffffff;
    color: #000000;
    border-color: #ffffff;
}

.btn-track.active:hover {
    background: #e0e0e0;
}

.btn-toggle {
    padding: 10px 14px;
    background: #2a2a2a;
    border: 1px solid #333;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
}

.btn-toggle:hover {
    background: #3a3a3a;
    border-color: #444;
}

.btn-toggle.expanded .arrow-icon {
    transform: rotate(90deg);
}

.arrow-icon {
    display: inline-flex;
    transition: transform 0.3s ease;
}

.arrow-icon svg {
    width: 16px;
    height: 16px;
}

.players-section {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
    opacity: 0;
    background: #0f0f0f;
    border-radius: 6px;
    padding: 0 24px;
}

.players-section.expanded {
    max-height: 2000px;
    opacity: 1;
    padding: 24px;
}

.lyrics-panel {
    background: #0f0f0f;
    border-radius: 6px;
    padding: 20px 24px;
    margin-top: 16px;
}

.lyrics-title {
    font-size: 12px;
    letter-spacing: 0.8px;
    color: #bfbfbf;
    text-transform: uppercase;
    margin-bottom: 12px;
    text-align: center;
}

.lyrics-content {
    max-height: 160px;
    overflow-y: auto;
    font-size: 13px;
    line-height: 1.6;
    color: #d0d0d0;
    padding-right: 4px;
    text-align: center;
    white-space: pre-line;
}

.players-container {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

@media (max-width: 1024px) {
    .players-container {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .players-container {
        grid-template-columns: repeat(1, minmax(0, 1fr));
    }
}

.player-card {
    background: #2a2a2a;
    border-radius: 4px;
    padding: 16px;
    transition: all 0.2s ease;
    border: 1px solid #333;
}

.player-card.active {
    background: #ffffff;
    border-color: #ffffff;
}

.player-card:not(.active) {
    background: #2a2a2a;
}

.player-title {
    font-size: 13px;
    font-weight: 500;
    color: #999;
    margin-bottom: 12px;
    text-align: center;
}

.player-card.active .player-title {
    color: #000000;
}

audio {
    width: 100%;
    height: 44px;
    background: #1f1f1f;
    border-radius: 999px;
    appearance: none;
    -moz-appearance: none;
}

.player-card.active audio {
    background: #f2f2f2;
}

/* 隐藏audio控件的更多选项和下载按钮 */
audio::-webkit-media-controls-enclosure {
    overflow: hidden;
    background-color: transparent;
    border-radius: 999px;
}

audio::-webkit-media-controls-panel {
    background-color: transparent;
}

/* 尝试隐藏更多选项按钮（如果存在） */
audio::-webkit-media-controls-overlay-enclosure,
audio::-webkit-media-controls-overlay-play-button,
audio::-webkit-media-controls-overflow-menu-button,
audio::-webkit-media-controls-download-button {
    display: none !important;
}

/* 未选中卡片的时间文字为灰色且无阴影 */
.player-card:not(.active) audio::-webkit-media-controls-current-time-display,
.player-card:not(.active) audio::-webkit-media-controls-time-remaining-display {
    color: #b3b3b3;
    text-shadow: none;
}

.status {
    text-align: center;
    padding-top: 12px;
    margin-top: 8px;
    color: #999;
    font-size: 12px;
    border-top: 1px solid #2a2a2a;
    background: transparent;
}

/* 加载进度条界面样式 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000000;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-container {
    max-width: 500px;
    width: 90%;
    background: #1a1a1a;
    border-radius: 6px;
    padding: 40px;
    text-align: center;
    border: 1px solid #333;
}

.loading-title {
    color: #ffffff;
    font-size: 22px;
    font-weight: 500;
    margin-bottom: 32px;
    letter-spacing: 0.3px;
}

.loading-progress-container {
    margin-bottom: 24px;
}

.loading-progress-bar {
    width: 100%;
    height: 4px;
    background: #2a2a2a;
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 12px;
    position: relative;
}

.loading-progress-fill {
    height: 100%;
    background: #ffffff;
    border-radius: 2px;
    width: 0%;
    transition: width 0.3s ease;
    position: relative;
}

.loading-progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: loading-shimmer 1.5s infinite;
}

@keyframes loading-shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

.loading-progress-text {
    color: #999;
    font-size: 13px;
    text-align: center;
}

.loading-status {
    color: #999;
    font-size: 12px;
    margin-top: 8px;
    min-height: 18px;
}

/* 主容器在加载完成前隐藏 */
#mainContainer.loading {
    opacity: 0;
    pointer-events: none;
}

#mainContainer {
    opacity: 1;
    transition: opacity 0.5s ease;
}