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

:root {
    --primary: #667EEA;
    --primary-dark: #5A67D8;
    --secondary: #764BA2;
    --accent: #F093FB;
    --bg: #0F0F1E;
    --bg-light: #1A1A2E;
    --bg-lighter: #252542;
    --text: #FFFFFF;
    --text-secondary: #A0A0B0;
    --border: rgba(255, 255, 255, 0.1);
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow: hidden;
    height: 100vh;
}

.app {
    display: grid;
    grid-template-rows: auto 1fr auto;
    grid-template-columns: 1fr 320px;
    height: 100vh;
    gap: 0;
}

/* 顶部导航 */
.header {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.icon-btn:hover {
    background: var(--bg-lighter);
    border-color: var(--primary);
}

/* 画布区域 */
.canvas-container {
    grid-column: 1 / 2;
    position: relative;
    background: radial-gradient(ellipse at center, #1A1A2E 0%, #0F0F1E 100%);
    overflow: hidden;
}

#canvas3d {
    width: 100%;
    height: 100%;
    display: block;
}

/* 加载遮罩 */
.loading-overlay {
    position: absolute;
    inset: 0;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 50;
    transition: opacity 0.5s ease;
}

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

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--bg-lighter);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

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

.loading-overlay p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* 控制提示 */
.controls-hint {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 24px;
    padding: 12px 24px;
    background: rgba(26, 26, 46, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    border: 1px solid var(--border);
}

.hint-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.hint-item svg {
    opacity: 0.6;
}

/* 右侧面板 */
.clothing-panel {
    grid-column: 2 / 3;
    grid-row: 2 / 4;
    background: var(--bg-light);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

.panel-header h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.category-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    border-color: var(--primary);
    color: var(--text);
}

.tab-btn.active {
    background: var(--gradient);
    border-color: transparent;
    color: white;
}

/* 服装网格 */
.clothing-grid {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.clothing-grid::-webkit-scrollbar {
    width: 6px;
}

.clothing-grid::-webkit-scrollbar-track {
    background: transparent;
}

.clothing-grid::-webkit-scrollbar-thumb {
    background: var(--bg-lighter);
    border-radius: 3px;
}

.clothing-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.clothing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.clothing-card.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.3);
}

.clothing-card img {
    width: 100%;
    height: 140px;
    object-fit: cover;
}

.clothing-card-info {
    padding: 12px;
    background: var(--bg-lighter);
}

.clothing-card-info h4 {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 4px;
}

.clothing-card-info span {
    font-size: 11px;
    color: var(--text-secondary);
}

.try-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--gradient);
    color: white;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 10px;
    font-weight: 600;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s ease;
}

.clothing-card.active .try-badge {
    opacity: 1;
    transform: scale(1);
}

/* 颜色面板 */
.color-panel {
    padding: 20px;
    border-top: 1px solid var(--border);
}

.color-panel h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
}

.color-options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.color-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.color-btn:hover {
    transform: scale(1.1);
}

.color-btn.active {
    border-color: white;
    box-shadow: 0 0 0 2px var(--primary);
}

/* 物理控制面板 */
.physics-panel {
    padding: 20px;
    border-top: 1px solid var(--border);
}

.physics-panel h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.control-group label {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-group label span {
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
}

.control-group input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    background: var(--bg-lighter);
    border-radius: 2px;
    outline: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--gradient);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.control-group input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.reset-physics-btn {
    width: 100%;
    padding: 12px;
    margin-top: 16px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.reset-physics-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* 当前试穿信息 */
.current-wear {
    position: absolute;
    bottom: 20px;
    left: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    border: 1px solid var(--border);
    z-index: 10;
    transition: all 0.3s ease;
}

.wear-preview {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg-lighter);
}

.wear-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.wear-info h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 2px;
}

.wear-info p {
    font-size: 12px;
    color: var(--text-secondary);
}

.remove-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: none;
    background: var(--bg-lighter);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.remove-btn:hover {
    background: #FF4757;
    color: white;
}

/* 响应式 */
@media (max-width: 1024px) {
    .app {
        grid-template-rows: auto 1fr auto;
        grid-template-columns: 1fr;
    }

    .canvas-container {
        grid-column: 1 / -1;
        grid-row: 2 / 3;
    }

    .clothing-panel {
        grid-column: 1 / -1;
        grid-row: 3 / 4;
        max-height: 40vh;
        border-left: none;
        border-top: 1px solid var(--border);
    }

    .color-panel,
    .physics-panel {
        display: none;
    }
}

@media (max-width: 768px) {
    .current-wear {
        left: 10px;
        bottom: 10px;
        padding: 10px 12px;
    }

    .controls-hint {
        display: none;
    }

    .clothing-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .clothing-card img {
        height: 100px;
    }
}

/* 全屏模式 */
.app.fullscreen {
    position: fixed;
    inset: 0;
    z-index: 1000;
}

/* 动画 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.clothing-card {
    animation: fadeIn 0.4s ease backwards;
}

.clothing-card:nth-child(1) { animation-delay: 0.05s; }
.clothing-card:nth-child(2) { animation-delay: 0.1s; }
.clothing-card:nth-child(3) { animation-delay: 0.15s; }
.clothing-card:nth-child(4) { animation-delay: 0.2s; }
.clothing-card:nth-child(5) { animation-delay: 0.25s; }