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

/* 返回主页按钮 */
.home-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    text-decoration: none;
    transition: all 0.3s ease;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.home-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
    color: #e4e4e4;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

header h1 {
    font-size: 2.5rem;
    background: linear-gradient(90deg, #00f5d4, #00bbf9, #9b5de5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.subtitle {
    color: #8892b0;
    font-size: 1rem;
}

.status-bar {
    display: flex;
    justify-content: center;
    gap: 25px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-item .label {
    color: #8892b0;
}

.status-item .value {
    font-weight: 600;
    color: #00f5d4;
    min-width: 50px;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.main-content {
    position: relative;
    margin-bottom: 20px;
}

.video-container {
    position: relative;
    width: 100%;
    max-width: 640px;
    margin: 0 auto;
    background: #000;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

#video {
    width: 100%;
    display: block;
}

#overlay-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    image-rendering: auto;
}

/* 全屏按钮 */
.fullscreen-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    background: rgba(0, 0, 0, 0.5);
    border: none;
    border-radius: 8px;
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fullscreen-btn:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

.video-container:fullscreen {
    max-width: none;
    border-radius: 0;
}

.video-container:fullscreen .fullscreen-btn {
    top: 20px;
    right: 20px;
}

.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
}

.loading-overlay.hidden {
    display: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(0, 245, 212, 0.3);
    border-top-color: #00f5d4;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

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

#loading-text {
    color: #ccd6f6;
    margin-bottom: 15px;
}

.progress-container {
    width: 200px;
    text-align: center;
}

.progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #00f5d4, #00bbf9);
    width: 0%;
    transition: width 0.3s;
}

.progress-text {
    font-size: 0.85rem;
    color: #8892b0;
}

.pose-info {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}

.pose-info h3 {
    color: #ccd6f6;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.pose-stats {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
}

.pose-stats .placeholder {
    color: #8892b0;
    grid-column: 1 / -1;
}

.stat-item {
    background: rgba(0, 0, 0, 0.2);
    padding: 10px 15px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat-item .stat-label {
    color: #8892b0;
    font-size: 0.85rem;
}

.stat-item .stat-value {
    color: #00f5d4;
    font-weight: 600;
    font-size: 0.9rem;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    margin-bottom: 20px;
    align-items: flex-end;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 150px;
}

.control-group label {
    font-size: 0.85rem;
    color: #8892b0;
}

.control-group label span {
    color: #00f5d4;
    font-weight: 600;
}

.control-group select,
.control-group input[type="range"] {
    padding: 10px 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.3);
    color: #e4e4e4;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s;
}

.control-group select:hover {
    border-color: #00f5d4;
}

.control-group select:focus {
    outline: none;
    border-color: #00f5d4;
    box-shadow: 0 0 0 2px rgba(0, 245, 212, 0.2);
}

.control-group input[type="range"] {
    padding: 0;
    height: 6px;
    appearance: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, #00f5d4, #00bbf9);
    cursor: pointer;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, #00f5d4, #00bbf9);
    color: #1a1a2e;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 245, 212, 0.4);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-danger {
    background: linear-gradient(135deg, #ff6347, #dc143c);
    color: white;
}

.display-options {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}

.display-options h3 {
    color: #ccd6f6;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.option-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: #8892b0;
    font-size: 0.9rem;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #00f5d4;
    cursor: pointer;
}

.checkbox-label:hover {
    color: #ccd6f6;
}

.instructions {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
}

.instructions h3 {
    color: #ccd6f6;
    margin-bottom: 15px;
}

.model-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.info-card {
    background: rgba(0, 0, 0, 0.2);
    padding: 15px;
    border-radius: 8px;
    border-left: 3px solid #00f5d4;
}

.info-card h4 {
    color: #00bbf9;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.info-card p {
    color: #8892b0;
    font-size: 0.85rem;
    line-height: 1.5;
}

@media (max-width: 600px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    .controls {
        flex-direction: column;
    }
    
    .control-group {
        width: 100%;
    }
    
    .status-bar {
        gap: 15px;
    }
}