/* CSS变量定义 */
:root {
    /* 浅色模式 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
    --accent-color: #0051CF;
    --accent-hover: #003d9f;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --slider-track-color: #e9ecef;
    --sidebar-width: 300px;
    --sidebar-collapsed-width: 60px;
}

/* 深色模式变量 */
[data-theme="dark"],
body[data-theme="dark"],
html[data-theme="dark"],
body.dark-theme {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #404040;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.4);
    --accent-color: #4A90E2; /* 深色模式下更亮的主题色 */
    --accent-hover: #5BA1F3; /* 深色模式下更亮的悬停色 */
    --slider-track-color: #6b7280; /* 深色模式下滑动条轨道颜色 */
}

/* 深色模式下的model-viewer背景 */
[data-theme="dark"] model-viewer,
body[data-theme="dark"] model-viewer,
body.dark-theme model-viewer {
    background: #1a1a1a !important;
}

/* 深色模式下的特殊元素样式 */
body.dark-theme *,
[data-theme="dark"] *,
body[data-theme="dark"] * {
    border-color: var(--border-color);
}

/* 深色模式下的输入元素 */
body.dark-theme input,
body.dark-theme select,
body.dark-theme textarea,
[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

body.dark-theme input:focus,
body.dark-theme select:focus,
body.dark-theme textarea:focus,
[data-theme="dark"] input:focus,
[data-theme="dark"] select:focus,
[data-theme="dark"] textarea:focus {
    border-color: var(--accent-color) !important;
    box-shadow: 0 0 0 2px rgba(0, 81, 207, 0.2) !important;
}

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    transition: all 0.3s ease;
}

/* 防止页面加载时的闪烁 */
.main-content {
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* JavaScript加载后恢复显示 */
.main-content.loaded {
    opacity: 1;
}

/* 加载遮罩 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.loading-content {
    text-align: center;
    max-width: 300px;
    width: 100%;
    padding: 20px;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.loading-progress {
    width: 100%;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--success-color));
    width: 0%;
    transition: width 0.3s ease;
}

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

/* 侧边栏 */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    z-index: 1000;
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    transform: translateX(-100%); /* 默认隐藏 */
}

.sidebar.show {
    transform: translateX(0);
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

/* 悬浮展开按钮 */
.floating-toggle {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1001;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 20px;
    color: var(--text-primary);
    backdrop-filter: blur(10px);
}

.floating-toggle::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), #0066ff);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.floating-toggle:hover::before {
    opacity: 1;
}

.floating-toggle:hover {
    background: white;
    color: var(--accent-color);
    border-color: transparent;
    transform: scale(1.15) rotate(90deg);
    box-shadow: 0 12px 35px rgba(0, 81, 207, 0.25);
}

.floating-toggle:active {
    transform: scale(1.05) rotate(90deg);
}

/* 侧边栏隐藏时显示悬浮按钮，但欢迎页面不显示 */
.main-content .floating-toggle {
    display: none; /* 默认隐藏 */
}

.main-content:not(.welcome-active) .floating-toggle {
    display: flex; /* 只在非欢迎页面显示 */
}

.sidebar.show + .main-content .floating-toggle {
    display: none;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 15px;
}

.sidebar-close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 16px;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.sidebar-close-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-header h2 {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-color), #0066ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    flex: 1;
}



.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

/* 模型选择区域 */
.model-section {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.model-select-btn {
    width: 100%;
    padding: 16px 20px;
    background: linear-gradient(135deg, var(--accent-color), #0066ff);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(0, 81, 207, 0.3);
}

.model-select-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 81, 207, 0.4);
    background: linear-gradient(135deg, var(--accent-hover), #0077ff);
}

.model-select-btn i {
    font-size: 18px;
}

.tools-section,
.controls-section {
    margin-bottom: 30px;
}

.tools-section h3,
.controls-section h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.tool-item {
    margin-bottom: 20px;
}

.tool-item label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

/* 切换按钮组 */
.toggle-group {
    display: flex;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    padding: 2px;
}

.toggle-btn {
    flex: 1;
    padding: 10px 16px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 6px;
    position: relative;
}

.toggle-btn.active {
    background: linear-gradient(135deg, var(--accent-color), #0066ff);
    color: white !important;
    box-shadow: 0 4px 12px rgba(0, 81, 207, 0.3);
    transform: scale(1.02);
}

.toggle-btn:hover:not(.active) {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transform: scale(1.01);
}



/* 开关 */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: all 0.3s ease;
    border-radius: 24px;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: all 0.3s ease;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.switch input:checked + .slider {
    background-color: var(--accent-color);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.switch input:checked + .slider:before {
    transform: translateX(26px);
    background-color: white;
}

.switch:hover .slider {
    box-shadow: 0 0 0 8px rgba(0, 81, 207, 0.1);
}

/* 双按钮组 */
.dual-button-group {
    display: flex;
    gap: 8px;
}

.dual-btn {
    flex: 1;
    padding: 12px 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 60px;
}

.dual-btn:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 81, 207, 0.2);
}

.dual-btn i {
    font-size: 16px;
    line-height: 1;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dual-btn span {
    font-size: 11px;
    text-align: center;
    line-height: 1.2;
}



/* 工具按钮 */
.tool-btn {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.tool-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 81, 207, 0.1), transparent);
    transition: left 0.4s;
}

.tool-btn:hover::before {
    left: 100%;
}

.tool-btn:hover {
    background: linear-gradient(135deg, var(--accent-color), #0066ff);
    color: white;
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 81, 207, 0.25);
}

.tool-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 10px rgba(0, 81, 207, 0.2);
}

.tool-btn i {
    font-size: 16px;
    transition: transform 0.2s ease;
}

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

/* 主内容区域 */
.main-content {
    margin-left: 0; /* 默认无边距，因为侧边栏默认隐藏 */
    height: 100vh;
    transition: margin-left 0.3s ease;
    position: relative;
}

.sidebar.show + .main-content {
    margin-left: var(--sidebar-width);
}

.sidebar.collapsed + .main-content {
    margin-left: 0;
}

/* Model Viewer 样式 */
model-viewer {
    width: 100%;
    height: 100vh;
    background: var(--bg-primary);
}

/* 隐藏模型视图区底部的进度条 */
model-viewer .progress-bar {
    display: none !important;
}

model-viewer .update-bar {
    display: none !important;
}

/* AR按钮容器 - 圆形悬浮样式 */
.ar-button-container {
    position: absolute;
    top: 80px;
    right: 20px;
    display: none; /* 默认隐藏，只在选择模型后显示 */
    flex-direction: column;
    align-items: center;
    z-index: 1000;
}

/* 选择模型后显示AR按钮 */
.main-content:not(.welcome-active) .ar-button-container {
    display: flex;
}

.ar-button {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
    position: relative;
}

.ar-button::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 50%;
    background: linear-gradient(135deg, #FF6B6B, #FF8E53);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.ar-button:hover::before {
    opacity: 1;
}

.ar-button:hover {
    background: white;
    color: #FF6B6B;
    border-color: transparent;
    transform: scale(1.15) rotate(15deg);
    box-shadow: 0 12px 35px rgba(255, 107, 107, 0.25);
}

.ar-button:active {
    transform: scale(1.05) rotate(15deg);
}

.ar-icon {
    width: 24px;
    height: 24px;
    transition: all 0.3s ease;
}

.ar-label {
    margin-top: 8px;
    text-align: center;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* 深色模式下的AR按钮 */
[data-theme="dark"] .ar-button,
body.dark-theme .ar-button {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .ar-button:hover,
body.dark-theme .ar-button:hover {
    background: var(--bg-primary);
    color: #FF6B6B;
}

[data-theme="dark"] .ar-label,
body.dark-theme .ar-label {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

/* 移动端AR按钮调整 */
@media (max-width: 768px) {
    .ar-button-container {
        top: 100px;
        right: 15px;
        display: none; /* 移动端默认也隐藏 */
    }
    
    /* 移动端选择模型后显示AR按钮 */
    .main-content:not(.welcome-active) .ar-button-container {
        display: flex;
    }
    
    .ar-button {
        width: 48px;
        height: 48px;
    }
    
    .ar-icon {
        width: 20px;
        height: 20px;
    }
    
    .ar-label {
        font-size: 11px;
        padding: 3px 6px;
        margin-top: 6px;
    }
}

/* 针对iOS Safari的刘海屏适配 */
@media (max-width: 768px) and (orientation: portrait) {
    .ar-button-container {
        top: max(100px, env(safe-area-inset-top) + 20px);
    }
}

/* 针对iPhone等小屏幕设备的进一步优化 */
@media (max-width: 480px) {
    .ar-button-container {
        top: 120px;
        right: 12px;
        display: none; /* 小屏设备默认也隐藏 */
    }
    
    /* 小屏设备选择模型后显示AR按钮 */
    .main-content:not(.welcome-active) .ar-button-container {
        display: flex;
    }
    
    .ar-button {
        width: 44px;
        height: 44px;
    }
    
    .ar-icon {
        width: 18px;
        height: 18px;
    }
}

/* 欢迎消息 */
.welcome-message {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.welcome-content {
    text-align: center;
    max-width: 600px;
    padding: 120px 40px 40px;
    position: relative;
    width: 100%;
}

/* 欢迎页面控制栏 */
.welcome-controls {
    position: absolute;
    top: 30px;
    left: 30px;
    right: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
}

.welcome-control-item {
    display: flex;
    align-items: center;
    justify-content: center;
}

.welcome-control-item label {
    display: none; /* 隐藏标签 */
}

.welcome-controls .toggle-group {
    border-radius: 6px;
    min-width: 120px;
    height: 36px;
    display: flex;
    align-items: center;
}

.welcome-controls .toggle-btn {
    padding: 8px 12px;
    font-size: 12px;
    border-radius: 4px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}





/* 固定宽度的切换组 */
.toggle-group.fixed-width {
    width: 120px;
    min-width: 120px;
}

/* 移动端适配 */
@media (max-width: 480px) {
    .welcome-controls {
        top: 20px;
        left: 20px;
        right: 20px;
    }
    
    .welcome-control-item {
        flex-shrink: 0;
    }
    
    .welcome-controls .toggle-group {
        min-width: 100px;
    }
    
    .welcome-controls .theme-switch {
        width: 36px;
        height: 36px;
    }
}

.welcome-content i {
    font-size: 48px;
    color: var(--accent-color);
    margin-bottom: 25px;
    display: inline-block;
    padding: 20px;
    background: linear-gradient(135deg, rgba(0, 81, 207, 0.1), rgba(0, 81, 207, 0.2));
    border-radius: 50%;
    animation: float 3s ease-in-out infinite;
}

.welcome-content h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--accent-color), #0066ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-content p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 35px;
    line-height: 1.6;
}

.welcome-btn {
    background: linear-gradient(135deg, var(--accent-color), #0066ff);
    color: white;
    border: none;
    padding: 18px 40px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin: 0 auto;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 25px rgba(0, 81, 207, 0.3);
    position: relative;
    overflow: hidden;
    min-width: 200px;
    justify-content: center;
}

.welcome-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s;
}

.welcome-btn:hover::before {
    left: 100%;
}

.welcome-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 35px rgba(0, 81, 207, 0.4);
}

.welcome-btn:active {
    transform: translateY(-1px) scale(1.02);
}

.welcome-btn i {
    font-size: 20px;
    margin: 0;
    padding: 0;
    background: none;
    animation: none;
    color: white;
    display: flex;
    align-items: center;
}

@keyframes float {
    0%, 100% { 
        transform: translateY(0px) rotate(0deg);
    }
    33% { 
        transform: translateY(-10px) rotate(5deg);
    }
    66% { 
        transform: translateY(-5px) rotate(-5deg);
    }
}

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

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: 12px;
    box-shadow: var(--shadow);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    animation: modalShow 0.3s ease;
}

@keyframes modalShow {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

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

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
    max-height: 60vh;
    overflow-y: auto;
}

/* 模型列表 */
.model-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.model-item {
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.model-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), #0066ff);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.model-item:hover::before {
    transform: scaleX(1);
}

.model-item:hover {
    border-color: var(--accent-color);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 81, 207, 0.15);
}

.model-item.active {
    border-color: var(--accent-color);
    background: linear-gradient(135deg, var(--accent-color), #0066ff);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 81, 207, 0.3);
}

.model-item.active::before {
    transform: scaleX(1);
    background: rgba(255, 255, 255, 0.3);
}

.model-item h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.3;
}

.model-item p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.5;
}

.model-item.active p {
    color: rgba(255, 255, 255, 0.9);
}

.model-item .model-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 12px;
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.model-item .model-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.model-item.active .model-meta {
    color: rgba(255, 255, 255, 0.8);
    border-top-color: rgba(255, 255, 255, 0.2);
}

.model-source {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.3);
}

.model-item.active .model-source {
    background: rgba(255, 255, 255, 0.25);
    color: white;
    box-shadow: 0 2px 8px rgba(255, 255, 255, 0.2);
}

/* 高级控制界面 */
.advanced-controls {
    animation: slideIn 0.3s ease;
}

.controls-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.back-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.2s ease;
    margin-right: 15px;
}

.back-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.controls-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* 控制组 */
.control-group {
    margin-bottom: 20px;
}

.control-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.control-group select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
}

.slider-control span {
    display: inline-block;
    width: 50px;
    text-align: right;
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    background: var(--bg-secondary);
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.control-group input[type="range"] {
    width: calc(100% - 60px);
    margin-right: 10px;
}

.control-group span {
    display: inline-block;
    width: 50px;
    text-align: right;
    font-size: 14px;
    color: var(--text-secondary);
}

/* 响应式设计 */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 280px;
        --sidebar-collapsed-width: 0px;
    }
    
    .sidebar {
        transform: translateX(-100%);
        z-index: 1002; /* 确保侧边栏在悬浮按钮上方 */
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .sidebar.show ~ .main-content .floating-toggle {
        display: none !important; /* 侧边栏展开时隐藏悬浮按钮 */
    }
    
    .main-content {
        margin-left: 0;
    }
    
    /* 移动端悬浮按钮控制 */
    .main-content .floating-toggle {
        display: none; /* 默认隐藏 */
        z-index: 1001; /* 低于侧边栏层级 */
    }
    
    /* 只在非欢迎页面且侧边栏隐藏时显示悬浮按钮 */
    .main-content:not(.welcome-active) .floating-toggle {
        display: flex;
    }
    

    

    
    .modal-content {
        width: 95%;
        max-height: 85vh;
    }
    
    .model-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    
    .sidebar-content {
        padding: 15px;
    }
    
    .modal-header,
    .modal-body {
        padding: 15px;
    }
    
    .loading-content {
        padding: 15px;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* 过渡动画 */
.fade-in {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-in {
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: translateX(-20px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
} 

/* 主题切换按钮 - 行业标准方案 */
.theme-switch {
    position: relative;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 12px;
    background: var(--bg-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.theme-switch:hover {
    background: var(--bg-tertiary);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.theme-switch:active {
    transform: scale(0.95);
}

.theme-icon {
    position: absolute;
    width: 20px;
    height: 20px;
    color: var(--text-primary);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 确保深色模式下主题图标颜色正确 */
[data-theme="dark"] .theme-icon,
body.dark-theme .theme-icon {
    color: var(--text-primary) !important;
}

/* 深色模式下欢迎页面SVG图标的stroke和fill颜色 */
[data-theme="dark"] .theme-icon svg,
body.dark-theme .theme-icon svg {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .theme-icon svg *,
body.dark-theme .theme-icon svg * {
    stroke: var(--text-primary) !important;
    fill: var(--text-primary) !important;
}

.theme-icon-sun {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.theme-icon-moon {
    opacity: 0;
    transform: rotate(90deg) scale(0.8);
}

/* 深色模式下的主题切换 */
[data-theme="dark"] .theme-icon-sun,
body.dark-theme .theme-icon-sun {
    opacity: 0;
    transform: rotate(-90deg) scale(0.8);
}

[data-theme="dark"] .theme-icon-moon,
body.dark-theme .theme-icon-moon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

/* 侧边栏主题切换 */
.theme-switch-sidebar {
    position: relative;
    overflow: hidden;
}

.theme-switch-sidebar .theme-icon {
    position: relative !important; /* 强制覆盖通用.theme-icon的absolute定位 */
    width: 16px !important;
    height: 16px !important;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    /* 重置可能受到通用样式影响的属性 */
    top: auto !important;
    left: auto !important;
    opacity: 1 !important;
    transform: none !important;
}

/* 侧边栏主题图标显示/隐藏控制 */
.theme-switch-sidebar .theme-icon-sun {
    display: block !important;
    opacity: 1 !important;
    transform: none !important;
}

.theme-switch-sidebar .theme-icon-moon {
    display: none !important;
    opacity: 0 !important;
}

[data-theme="dark"] .theme-switch-sidebar .theme-icon-sun,
body.dark-theme .theme-switch-sidebar .theme-icon-sun {
    display: none !important;
    opacity: 0 !important;
}

[data-theme="dark"] .theme-switch-sidebar .theme-icon-moon,
body.dark-theme .theme-switch-sidebar .theme-icon-moon {
    display: block !important;
    opacity: 1 !important;
    transform: none !important;
}

/* 深色模式下侧边栏主题图标颜色 */
[data-theme="dark"] .theme-switch-sidebar .theme-icon,
body.dark-theme .theme-switch-sidebar .theme-icon {
    color: var(--text-primary) !important; /* 确保深色模式下是白色 */
}

/* 深色模式下SVG图标的stroke和fill颜色 */
[data-theme="dark"] .theme-switch-sidebar .theme-icon svg,
body.dark-theme .theme-switch-sidebar .theme-icon svg {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .theme-switch-sidebar .theme-icon svg *,
body.dark-theme .theme-switch-sidebar .theme-icon svg * {
    stroke: var(--text-primary) !important;
    fill: var(--text-primary) !important;
}

/* 确保月亮图标在深色模式下fill颜色正确 */
[data-theme="dark"] .theme-switch-sidebar .theme-icon-moon path,
body.dark-theme .theme-switch-sidebar .theme-icon-moon path {
    fill: var(--text-primary) !important;
    stroke: var(--text-primary) !important;
}

.theme-switch-sidebar .theme-label {
    font-size: 11px;
    line-height: 1.2;
    transition: all 0.2s ease;
    display: block;
}

/* 深色模式下侧边栏主题按钮的文字更新 */
[data-theme="dark"] .theme-switch-sidebar .theme-label,
body.dark-theme .theme-switch-sidebar .theme-label {
    color: var(--text-primary); /* 确保文字也是白色 */
}

/* 主题切换动画优化 */
@media (prefers-reduced-motion: reduce) {
    .theme-switch,
    .theme-icon {
        transition: none;
    }
} 

/* 删除重复的主题按钮样式 */

/* 滑块控制 */
.slider-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.slider-control input[type="range"] {
    flex: 1;
    height: 6px;
    background: var(--slider-track-color);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

.slider-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent-color);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 81, 207, 0.3);
    transition: all 0.2s ease;
}

.slider-control input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 81, 207, 0.4);
}

/* 深色模式下的滑动条样式已通过CSS变量自动处理 */

/* ===== 新的模型选择界面样式 ===== */

/* 搜索和筛选栏 */
.model-filters {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 25px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box i {
    position: absolute;
    left: 15px;
    color: var(--text-secondary);
    z-index: 1;
}

.search-box input {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 2px solid var(--border-color);
    border-radius: 25px;
    font-size: 14px;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 81, 207, 0.1);
}

.filter-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 16px;
    border: 2px solid var(--border-color);
    border-radius: 20px;
    background: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
    font-weight: 500;
}

.filter-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.filter-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

/* 模型网格布局 */
.model-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

/* 模型卡片样式 */
.model-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.model-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-color);
    box-shadow: 0 12px 30px rgba(0, 81, 207, 0.15);
}

.model-card.active {
    border-color: var(--accent-color);
    box-shadow: 0 8px 25px rgba(0, 81, 207, 0.3);
}

.model-card.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), #0066ff);
    z-index: 1;
}

/* 封面图样式 */
.model-poster {
    position: relative;
    width: 100%;
    height: 180px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
}

.model-poster img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    transition: transform 0.3s ease, opacity 0.3s ease;
    background: transparent;
    opacity: 1;
}

.model-poster img[loading] {
    opacity: 0.7;
}

.model-card:hover .model-poster img {
    transform: scale(1.02);
}

.model-poster.no-poster {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}

.poster-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.poster-placeholder i {
    font-size: 48px;
    margin-bottom: 8px;
    opacity: 0.5;
}

.poster-placeholder span {
    font-size: 14px;
    font-weight: 600;
    opacity: 0.7;
}

.poster-fallback {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.poster-fallback i {
    font-size: 48px;
    opacity: 0.5;
}

/* 模型信息区域 */
.model-info {
    padding: 20px;
    position: relative;
}

.model-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
    color: var(--text-primary);
}

.model-description {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.model-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 12px;
    color: var(--text-secondary);
}

.model-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 500;
    padding: 4px 8px;
    background: var(--bg-primary);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.model-meta i {
    font-size: 10px;
    opacity: 0.7;
}

/* 推荐徽章 */
.featured-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: white;
    padding: 6px 10px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
    box-shadow: 0 2px 8px rgba(255, 215, 0, 0.3);
}

.featured-badge i {
    font-size: 10px;
}

/* 无模型提示 */
.no-models {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    text-align: center;
}

.no-models i {
    font-size: 64px;
    margin-bottom: 20px;
    opacity: 0.3;
}

.no-models p {
    font-size: 16px;
    font-weight: 500;
}

/* 分页控制 */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 20px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: 0 0 12px 12px;
}

.pagination-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
    font-weight: 500;
}

.pagination-btn:hover:not(:disabled) {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

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

.page-info {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    min-width: 60px;
    text-align: center;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .model-filters {
        padding: 15px;
    }
    
    .filter-buttons {
        justify-content: center;
    }
    
    .model-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 15px;
    }
    
    .model-poster {
        height: 160px;
    }
    
    .model-info {
        padding: 15px;
    }
    
    .pagination {
        padding: 15px;
    }
    
    .pagination-btn span {
        display: none;
    }
}

@media (max-width: 480px) {
    .model-grid {
        grid-template-columns: 1fr;
    }
    
    .model-card {
        margin: 0 10px;
    }
}