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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #0a0a0a;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(120, 200, 255, 0.1) 0%, transparent 50%);
    min-height: 100vh;
    color: #fff;
}

.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #0a0a0a;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.login-box h1 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 28px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #ccc;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(30, 30, 30, 0.8);
    color: #fff;
    font-size: 16px;
    transition: all 0.3s;
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    background: rgba(40, 40, 40, 0.9);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.compact-header {
    padding: 15px 20px;
    margin-bottom: 15px;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-toggle {
    padding: 8px 16px;
    background: rgba(40, 40, 40, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.btn-toggle:hover {
    background: rgba(50, 50, 50, 0.9);
}

header h1 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.tab-btn {
    padding: 12px 24px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(30, 30, 30, 0.8);
    color: #ccc;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s;
}

.tab-btn:hover {
    background: rgba(40, 40, 40, 0.9);
    border-color: rgba(255, 255, 255, 0.2);
    color: #fff;
}

.tab-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: transparent;
    color: #fff;
    font-weight: bold;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.actions {
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
}

.btn-primary, .btn-secondary {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: rgba(40, 40, 40, 0.8);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(50, 50, 50, 0.9);
    border-color: rgba(255, 255, 255, 0.2);
}

.track-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.track-item {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    transition: all 0.3s;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.track-item:hover {
    background: rgba(30, 30, 30, 0.95);
    border-color: rgba(102, 126, 234, 0.5);
    transform: translateY(-3px);
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.2);
}

.track-item h3 {
    margin-bottom: 10px;
    font-size: 18px;
    color: #fff;
}

.track-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
    font-size: 14px;
    opacity: 0.9;
}

.track-meta span {
    background: rgba(40, 40, 40, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 4px 8px;
    border-radius: 4px;
    color: #ccc;
}

.error-message {
    color: #ff6b6b;
    margin-top: 10px;
    text-align: center;
    display: none;
    padding: 10px;
    background: rgba(255, 107, 107, 0.1);
    border: 1px solid rgba(255, 107, 107, 0.3);
    border-radius: 6px;
}

.error-message.show {
    display: block;
}

.library-stats {
    padding: 15px;
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    margin-bottom: 20px;
    color: #ccc;
}

.library-stats strong {
    color: #667eea;
}

.recommendations-controls, .filter-form {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.filter-group {
    margin-bottom: 15px;
}

.filter-group label {
    display: block;
    margin-bottom: 8px;
    color: #ccc;
}

.filter-group input, .filter-group select {
    padding: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    background: rgba(30, 30, 30, 0.8);
    color: #fff;
    margin-right: 10px;
}

.filter-group input:focus, .filter-group select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.recommendations-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.recommendations-controls input {
    flex: 1;
    padding: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(30, 30, 30, 0.8);
    color: #fff;
}

.transition-score {
    font-weight: bold;
    color: #4ecdc4;
    margin-top: 10px;
}

.reasons {
    margin-top: 5px;
    font-size: 12px;
    opacity: 0.8;
    color: #aaa;
}

/* 播放器样式 */
.player-container {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.player-info {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.now-playing {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.now-playing span:first-child {
    font-size: 18px;
    font-weight: bold;
    color: #fff;
}

.player-meta {
    font-size: 14px;
    color: #ccc;
    opacity: 0.8;
}

.player-controls {
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: center;
}

.player-btn {
    padding: 10px 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(30, 30, 30, 0.8);
    color: #fff;
    border-radius: 8px;
    cursor: pointer;
    font-size: 18px;
    transition: all 0.3s;
    min-width: 50px;
}

.player-btn:hover {
    background: rgba(40, 40, 40, 0.9);
    border-color: rgba(102, 126, 234, 0.5);
    transform: translateY(-2px);
}

.player-btn:active {
    transform: translateY(0);
}

#playPauseBtn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    font-size: 20px;
    min-width: 60px;
}

.smart-btn {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    border: none;
    color: #fff;
    font-weight: bold;
    font-size: 14px;
    padding: 10px 20px;
}

.smart-btn:hover {
    background: linear-gradient(135deg, #f5576c 0%, #f093fb 100%);
    box-shadow: 0 4px 15px rgba(245, 87, 108, 0.4);
}

.smart-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* 通知样式 */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 20px;
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    z-index: 10000;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    max-width: 300px;
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification-success {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.notification-error {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.notification-info {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.player-progress {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.progress-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
}

.progress-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    cursor: pointer;
}

.progress-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    cursor: pointer;
    border: none;
}

.time-info {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: #ccc;
}

.play-track-btn {
    margin-top: 10px;
    padding: 8px 16px;
    border: 1px solid rgba(102, 126, 234, 0.5);
    background: rgba(102, 126, 234, 0.2);
    color: #fff;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.play-track-btn:hover {
    background: rgba(102, 126, 234, 0.4);
    border-color: rgba(102, 126, 234, 0.8);
}

/* 可视化容器样式 */
.visualizer-container {
    background: rgba(10, 10, 10, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
    min-height: 200px;
}

#visualizerCanvas {
    width: 100%;
    height: 200px;
    display: block;
    border-radius: 10px;
}

.visualizer-info {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    gap: 15px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
    background: rgba(0, 0, 0, 0.5);
    padding: 5px 10px;
    border-radius: 5px;
    backdrop-filter: blur(5px);
}

.visualizer-info span {
    font-family: 'Courier New', monospace;
}

/* DJ混音台样式（紧凑版） */
.dj-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px 20px;
}

.dj-mixer-compact {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.dj-status-compact {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 15px;
    text-align: center;
}

.status-message {
    font-size: 16px;
    color: #fff;
    margin-bottom: 10px;
    min-height: 24px;
}

.status-progress {
    margin-top: 10px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    width: 0%;
    transition: width 0.3s;
    border-radius: 3px;
}

.dj-decks-compact {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.dj-deck-compact {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.deck-a {
    border-left: 3px solid #667eea;
}

.deck-b {
    border-left: 3px solid #f5576c;
}

.deck-header-compact {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.deck-header-buttons {
    display: flex;
    gap: 8px;
    align-items: center;
}

.deck-header-compact h3 {
    margin: 0;
    font-size: 16px;
    color: #fff;
}

.load-track-btn-compact {
    padding: 6px 12px;
    background: rgba(102, 126, 234, 0.3);
    border: 1px solid rgba(102, 126, 234, 0.5);
    color: #fff;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.3s;
}

.load-track-btn-compact:hover {
    background: rgba(102, 126, 234, 0.5);
}

.btn-smart-match {
    padding: 6px 12px;
    background: linear-gradient(135deg, #f5576c 0%, #f093fb 100%);
    border: none;
    color: #fff;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    font-weight: bold;
    transition: all 0.3s;
    box-shadow: 0 2px 10px rgba(245, 87, 108, 0.3);
}

.btn-smart-match:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(245, 87, 108, 0.5);
}

.btn-smart-match:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.deck-info-compact {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.track-name-compact {
    font-size: 14px;
    font-weight: bold;
    color: #fff;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.track-bpm-compact {
    font-size: 12px;
    color: #ccc;
    font-family: 'Courier New', monospace;
}

.deck-waveform-compact {
    height: 50px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 5px;
    overflow: hidden;
}

.deck-waveform-compact canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.deck-beat-compact {
    height: 30px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.beat-grid-compact {
    display: flex;
    gap: 8px;
    width: 100%;
    padding: 0 10px;
}

.beat-marker-compact {
    flex: 1;
    height: 3px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    transition: all 0.1s;
}

.beat-marker-compact.active {
    background: #00ff00;
    box-shadow: 0 0 8px #00ff00;
    height: 6px;
}

.deck-sliders-compact {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.slider-group-compact {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.slider-group-compact label {
    font-size: 11px;
    color: #ccc;
    display: flex;
    justify-content: space-between;
}

.tempo-slider-compact, .volume-slider-compact {
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
}

.tempo-slider-compact::-webkit-slider-thumb, .volume-slider-compact::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #667eea;
    cursor: pointer;
}

.tempo-slider-compact::-moz-range-thumb, .volume-slider-compact::-moz-range-thumb {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #667eea;
    cursor: pointer;
    border: none;
}

.mix-controls-compact {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.crossfader-compact {
    text-align: center;
}

.crossfader-compact label {
    display: block;
    margin-bottom: 8px;
    color: #ccc;
    font-size: 12px;
}

.crossfader-slider-compact {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(to right, #667eea 0%, #764ba2 50%, #f5576c 100%);
    outline: none;
    -webkit-appearance: none;
}

.crossfader-slider-compact::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.crossfader-slider-compact::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.crossfader-labels-compact {
    display: flex;
    justify-content: space-between;
    margin-top: 5px;
    font-size: 11px;
    color: #aaa;
}

.sync-status-compact {
    text-align: center;
    font-size: 12px;
    color: #ccc;
    padding: 8px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 5px;
}

.sync-status-compact.synced {
    color: #00ff00;
}

/* 混音进度条 */
.mix-progress {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.mix-progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 12px;
    color: #ccc;
}

.mix-progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 10px;
}

.mix-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    width: 0%;
    transition: width 0.1s;
    border-radius: 3px;
}

.mix-deck-progress {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.deck-progress-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 11px;
    color: #aaa;
}

.deck-progress-item span {
    min-width: 50px;
}

.deck-progress-bar {
    flex: 1;
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    overflow: hidden;
}

.deck-progress-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.1s;
    width: 0%;
}

.crossfader-container {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 20px;
    text-align: center;
}

.crossfader-container label {
    display: block;
    margin-bottom: 10px;
    color: #ccc;
    font-size: 14px;
}

.crossfader-slider {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(to right, #667eea 0%, #764ba2 50%, #f5576c 100%);
    outline: none;
    -webkit-appearance: none;
}

.crossfader-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.crossfader-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.crossfader-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 5px;
    font-size: 12px;
    color: #aaa;
}

.dj-decks {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.dj-deck {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.deck-a {
    border-left: 3px solid #667eea;
}

.deck-b {
    border-left: 3px solid #f5576c;
}

.deck-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.deck-header h3 {
    margin: 0;
    color: #fff;
}

.load-track-btn {
    padding: 8px 16px;
    background: rgba(102, 126, 234, 0.3);
    border: 1px solid rgba(102, 126, 234, 0.5);
    color: #fff;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.3s;
}

.load-track-btn:hover {
    background: rgba(102, 126, 234, 0.5);
}

.deck-info {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.track-name {
    font-size: 16px;
    font-weight: bold;
    color: #fff;
}

.track-bpm {
    font-size: 14px;
    color: #ccc;
    font-family: 'Courier New', monospace;
}

.deck-waveform {
    height: 80px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    overflow: hidden;
}

.deck-waveform canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.deck-beat-indicator {
    position: relative;
    height: 60px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.beat-grid {
    display: flex;
    gap: 10px;
    width: 100%;
    padding: 0 20px;
}

.beat-marker {
    flex: 1;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    transition: all 0.1s;
}

.beat-marker.active {
    background: #00ff00;
    box-shadow: 0 0 10px #00ff00;
    height: 8px;
}

.beat-pulse {
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(102, 126, 234, 0.5);
    border: 2px solid #667eea;
    transition: transform 0.1s;
}

.beat-pulse.pulse {
    transform: scale(1.5);
    background: rgba(102, 126, 234, 0.8);
    box-shadow: 0 0 20px #667eea;
}

.deck-controls-minimal {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.track-meta {
    display: flex;
    gap: 15px;
    font-size: 12px;
    color: #aaa;
    margin-top: 5px;
}

.track-meta span {
    font-family: 'Courier New', monospace;
}

/* DJ状态区域 */
.dj-status {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    margin-bottom: 20px;
}

.status-message {
    font-size: 18px;
    color: #fff;
    margin-bottom: 20px;
    min-height: 30px;
}

.status-progress {
    margin: 20px 0;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    width: 0%;
    transition: width 0.3s;
    border-radius: 4px;
}

.progress-text {
    font-size: 14px;
    color: #ccc;
}

.start-mix-btn-container {
    text-align: center;
    margin: 20px 0;
}

.start-mix-btn {
    padding: 15px 40px;
    font-size: 18px;
    font-weight: bold;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: #fff;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
}

.start-mix-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.start-mix-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(102, 126, 234, 0.6);
}

.mix-controls {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 20px;
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.deck-sliders {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.slider-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.slider-group label {
    font-size: 12px;
    color: #ccc;
    display: flex;
    justify-content: space-between;
}

.tempo-slider, .volume-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
}

.tempo-slider::-webkit-slider-thumb, .volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #667eea;
    cursor: pointer;
}

.tempo-slider::-moz-range-thumb, .volume-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #667eea;
    cursor: pointer;
    border: none;
}

.beat-sync-indicator {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 15px;
    text-align: center;
}

.sync-status {
    color: #ccc;
    font-size: 14px;
    margin-bottom: 10px;
}

.sync-status span {
    font-weight: bold;
}

.sync-status.synced span {
    color: #00ff00;
}

.sync-visual {
    height: 40px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.sync-bar {
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: #00ff00;
    box-shadow: 0 0 10px #00ff00;
    transition: left 0.1s;
}

/* 曲目选择器模态框 */
.track-selector-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
}

.modal-content {
    background: rgba(20, 20, 20, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-header h3 {
    margin: 0;
    color: #fff;
    flex: 1;
}

.modal-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.scan-library-btn {
    padding: 8px 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: #fff;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.3s;
}

.scan-library-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.scan-library-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.modal-close {
    background: none;
    border: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    border-radius: 50%;
    transition: all 0.3s;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

.track-selector-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.track-selector-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: rgba(30, 30, 30, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    transition: all 0.3s;
}

.track-selector-item:hover {
    background: rgba(40, 40, 40, 0.9);
    border-color: rgba(102, 126, 234, 0.5);
}

.track-info {
    flex: 1;
}

.track-info strong {
    display: block;
    color: #fff;
    margin-bottom: 5px;
}

.select-track-btn {
    padding: 8px 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: #fff;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.select-track-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

/* 播放/暂停按钮 */
.deck-controls-compact {
    display: flex;
    gap: 8px;
    margin: 8px 0;
}

.deck-play-btn, .deck-pause-btn {
    padding: 6px 12px;
    background: rgba(102, 126, 234, 0.3);
    border: 1px solid rgba(102, 126, 234, 0.5);
    color: #fff;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.3s;
}

.deck-play-btn:hover, .deck-pause-btn:hover {
    background: rgba(102, 126, 234, 0.5);
}

/* 波形对比区域 */
.waveform-comparison-container {
    margin: 20px 0;
    padding: 15px;
    background: rgba(20, 20, 30, 0.8);
    border-radius: 10px;
    border: 1px solid rgba(102, 126, 234, 0.3);
}

.waveform-comparison-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.waveform-comparison-header h4 {
    margin: 0;
    color: #fff;
    font-size: 14px;
}

.btn-toggle-waveform {
    padding: 4px 10px;
    background: rgba(102, 126, 234, 0.3);
    border: 1px solid rgba(102, 126, 234, 0.5);
    color: #fff;
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
}

.btn-toggle-waveform:hover {
    background: rgba(102, 126, 234, 0.5);
}

.waveform-comparison-content {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.waveform-track {
    display: flex;
    align-items: center;
    gap: 10px;
}

.waveform-label {
    width: 60px;
    color: #fff;
    font-size: 12px;
    font-weight: bold;
}

.waveform-track canvas {
    flex: 1;
    height: 60px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 4px;
}

/* EQ均衡器 */
.eq-controls-container {
    margin: 20px 0;
    padding: 15px;
    background: rgba(20, 20, 30, 0.8);
    border-radius: 10px;
    border: 1px solid rgba(102, 126, 234, 0.3);
}

.eq-controls-header {
    margin-bottom: 15px;
}

.eq-controls-header h4 {
    margin: 0;
    color: #fff;
    font-size: 14px;
}

.eq-controls-content {
    display: flex;
    gap: 30px;
    justify-content: center;
}

.eq-deck {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.eq-deck-label {
    color: #fff;
    font-size: 12px;
    font-weight: bold;
}

.eq-bands {
    display: flex;
    gap: 15px;
    align-items: flex-end;
}

.eq-band {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.eq-band label {
    color: #ccc;
    font-size: 11px;
    writing-mode: horizontal-tb;
}

.eq-slider {
    width: 50px;
    height: 150px;
    -webkit-appearance: slider-vertical;
    writing-mode: bt-lr;
    direction: rtl;
    background: rgba(102, 126, 234, 0.2);
    border-radius: 4px;
    outline: none;
}

.eq-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: #667eea;
    border-radius: 50%;
    cursor: pointer;
}

.eq-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: #667eea;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.eq-band span {
    color: #fff;
    font-size: 10px;
    min-width: 40px;
    text-align: center;
}