/**
 * LUT-AI PC端响应式主题 - 2026年现代设计
 * 版本: v2.0
 * 日期: 2026-05-21
 *
 * 设计风格: 毛玻璃拟态(Glassmorphism) + 粘土拟态(Claymorphism)
 * 说明: 此文件仅在PC端（≥769px）生效，完全不影响移动端样式
 */

/* ============================================
   CSS 变量定义 - 2026现代配色方案
   ============================================ */

:root {
  /* 主色调 - 青绿色系 (Teal Focus) */
  --pc-primary: #0D9488;
  --pc-primary-light: #14B8A6;
  --pc-primary-dark: #0F766E;
  --pc-secondary: #14B8A6;

  /* 强调色 - 活力橙色 */
  --pc-accent: #F97316;
  --pc-accent-hover: #EA580C;
  --pc-accent-light: rgba(249, 115, 22, 0.1);

  /* 背景色 - 柔和渐变 */
  --pc-bg-primary: #F0FDFA;
  --pc-bg-secondary: #CCFBF1;
  --pc-bg-tertiary: #99F6E4;

  /* 文字颜色 */
  --pc-text-primary: #134E4A;
  --pc-text-secondary: #115E59;
  --pc-text-muted: #5EEAD4;

  /* 毛玻璃效果 */
  --glass-bg: rgba(255, 255, 255, 0.25);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-blur: 20px;
  --glass-shadow: 0 8px 32px rgba(13, 148, 136, 0.15);

  /* 粘土拟态效果 */
  --clay-border-width: 3px;
  --clay-border-radius: 20px;
  --clay-shadow-inner: inset -3px -3px 10px rgba(0, 0, 0, 0.05);
  --clay-shadow-outer: 5px 5px 15px rgba(13, 148, 136, 0.2);
  --clay-shadow-hover: 8px 8px 20px rgba(13, 148, 136, 0.3);

  /* 间距系统 */
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* 圆角系统 */
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* 动画时长 */
  --transition-fast: 150ms;
  --transition-normal: 250ms;
  --transition-slow: 400ms;
  --transition-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* 字体 */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

/* ============================================
   PC端基础样式（≥769px）
   ============================================ */

@media (min-width: 769px) {

  /* 全局字体 */
  body {
    font-family: var(--font-family);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  /* 隐藏侧边栏底部的操作按钮（在PC端由顶部导航栏替代） */
  .sidebar-actions {
    display: none !important;
  }

  /* 隐藏预览区域的快速操作按钮（在PC端由顶部导航栏替代） */
  .quick-actions {
    display: none !important;
  }

  /* 隐藏所有移动端元素 */
  .mobile-bottom-nav,
  .mobile-fullscreen-viewer,
  .mobile-lut-sidebar,
  .mobile-intensity-modal,
  .mobile-lut-modal,
  .mobile-drawer-toggle,
  .mobile-overlay,
  .mobile-filter-drawer,
  .mobile-adjust-drawer,
  .floating-upload-btn,
  .floating-filter-container,
  .floating-toolbar {
    display: none !important;
  }

  /* ============================================
     响应式布局 - 侧边栏宽度
     ============================================ */

  /* 平板端 (769px - 1024px) */
  .left-sidebar {
    width: 300px !important;
    background: linear-gradient(180deg, var(--pc-bg-primary) 0%, var(--pc-bg-secondary) 100%);
    border-right: var(--clay-border-width) solid var(--glass-border);
    box-shadow: var(--clay-shadow-outer);
  }

  .main-content {
    margin-left: 300px !important;
    background: var(--pc-bg-primary);
  }

  /* 小屏PC (1025px - 1440px) */
  @media (min-width: 1025px) {
    .left-sidebar {
      width: 340px !important;
    }

    .main-content {
      margin-left: 340px !important;
    }
  }

  /* 大屏PC (1441px - 1919px) */
  @media (min-width: 1441px) {
    .left-sidebar {
      width: 380px !important;
    }

    .main-content {
      margin-left: 380px !important;
    }
  }

  /* 超大屏 (≥1920px) */
  @media (min-width: 1920px) {
    .left-sidebar {
      width: 420px !important;
    }

    .main-content {
      margin-left: 420px !important;
    }
  }

  /* 侧边栏收起时 */
  .left-sidebar.collapsed {
    width: 0 !important;
    padding: 0 !important;
    overflow: hidden !important;
    border-right: none !important;
  }

  .left-sidebar.collapsed + .sidebar-expand + .main-content,
  .main-content.expanded {
    margin-left: 0 !important;
  }

  /* ============================================
     侧边栏美化 - 粘土拟态风格
     ============================================ */

  .left-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 1000;
    transition: all var(--transition-normal) ease-out;
  }

  /* 侧边栏标题 */
  .sidebar-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--pc-text-primary);
    padding: var(--space-lg);
    margin: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-lg);
    border: var(--clay-border-width) solid var(--glass-border);
    box-shadow: var(--clay-shadow-inner), var(--clay-shadow-outer);
    margin: var(--space-md);
  }

  /* 控制组 - 粘土拟态卡片 */
  .control-group,
  .control-group-small {
    background: white;
    border-radius: var(--clay-border-radius);
    border: var(--clay-border-width) solid var(--glass-border);
    padding: var(--space-md);
    margin: var(--space-md);
    box-shadow: var(--clay-shadow-inner), var(--clay-shadow-outer);
    transition: all var(--transition-normal) var(--transition-bounce);
  }

  .control-group:hover,
  .control-group-small:hover {
    box-shadow: var(--clay-shadow-inner), var(--clay-shadow-hover);
    transform: translateY(-2px);
  }

  /* 滑块样式 - 粘土拟态 */
  input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 12px;
    background: var(--pc-bg-secondary);
    border-radius: var(--radius-full);
    border: 2px solid var(--glass-border);
    box-shadow: var(--clay-shadow-inner);
    outline: none;
    transition: all var(--transition-fast);
  }

  input[type="range"]:hover {
    background: var(--pc-bg-tertiary);
  }

  input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--pc-primary) 0%, var(--pc-primary-light) 100%);
    border-radius: 50%;
    border: var(--clay-border-width) solid white;
    box-shadow: var(--clay-shadow-outer);
    cursor: pointer;
    transition: all var(--transition-normal) var(--transition-bounce);
  }

  input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--clay-shadow-hover);
  }

  input[type="range"]::-webkit-slider-thumb:active {
    transform: scale(1.1);
  }

  input[type="range"]::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--pc-primary) 0%, var(--pc-primary-light) 100%);
    border-radius: 50%;
    border: var(--clay-border-width) solid white;
    box-shadow: var(--clay-shadow-outer);
    cursor: pointer;
    transition: all var(--transition-normal) var(--transition-bounce);
  }

  input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--clay-shadow-hover);
  }

  /* 下拉选择框 - 粘土拟态 */
  select {
    background: white;
    border: var(--clay-border-width) solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    font-size: 0.95rem;
    color: var(--pc-text-primary);
    box-shadow: var(--clay-shadow-inner), var(--clay-shadow-outer);
    transition: all var(--transition-normal) var(--transition-bounce);
    cursor: pointer;
  }

  select:hover {
    border-color: var(--pc-primary);
    box-shadow: var(--clay-shadow-inner), var(--clay-shadow-hover);
    transform: translateY(-1px);
  }

  select:focus {
    outline: none;
    border-color: var(--pc-primary);
    box-shadow: var(--clay-shadow-inner), 0 0 0 4px var(--pc-accent-light);
  }

  /* 侧边栏收起/展开按钮 - 粘土拟态 */
  .sidebar-toggle {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 40px;
    height: 40px;
    background: white;
    border: var(--clay-border-width) solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--pc-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--clay-shadow-outer);
    transition: all var(--transition-normal) var(--transition-bounce);
    z-index: 10;
  }

  .sidebar-toggle:hover {
    background: var(--pc-bg-secondary);
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--clay-shadow-hover);
  }

  .sidebar-toggle:active {
    transform: scale(1.05) rotate(0deg);
  }

  .sidebar-expand {
    position: fixed !important;
    top: var(--space-lg);
    left: var(--space-lg);
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--pc-primary) 0%, var(--pc-primary-light) 100%);
    border: var(--clay-border-width) solid white;
    border-radius: var(--radius-lg);
    color: white;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--clay-shadow-outer);
    transition: all var(--transition-normal) var(--transition-bounce);
    z-index: 1001;
  }

  .sidebar-expand:hover {
    transform: scale(1.15) rotate(-5deg);
    box-shadow: var(--clay-shadow-hover);
  }

  .sidebar-expand:active {
    transform: scale(1.1) rotate(0deg);
  }

  /* 侧边栏收起时显示展开按钮 */
  .left-sidebar.collapsed ~ .sidebar-expand {
    display: flex !important;
  }

  /* ============================================
     PC端顶部导航栏 - 毛玻璃拟态
     ============================================ */

  .pc-navbar {
    position: fixed !important;
    top: 0;
    left: 300px !important;
    right: 0;
    height: 80px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: var(--clay-border-width) solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    z-index: 999;
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-xl);
    transition: left var(--transition-normal) ease-out;
  }

  @media (min-width: 1025px) {
    .pc-navbar {
      left: 340px !important;
    }
  }

  @media (min-width: 1441px) {
    .pc-navbar {
      left: 380px !important;
    }
  }

  @media (min-width: 1920px) {
    .pc-navbar {
      left: 420px !important;
    }
  }

  /* 侧边栏收起时导航栏占满宽 */
  .left-sidebar.collapsed ~ .sidebar-expand ~ .main-content .pc-navbar,
  .main-content.expanded .pc-navbar {
    left: 0 !important;
  }

  /* 导航栏Logo - 粘土拟态 */
  .navbar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--pc-text-primary);
    user-select: none;
    padding: var(--space-sm) var(--space-md);
    background: white;
    border-radius: var(--radius-lg);
    border: var(--clay-border-width) solid var(--glass-border);
    box-shadow: var(--clay-shadow-outer);
    transition: all var(--transition-normal) var(--transition-bounce);
  }

  .navbar-logo:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--clay-shadow-hover);
  }

  .logo-icon {
    font-size: 1.75rem;
    filter: drop-shadow(0 2px 4px rgba(13, 148, 136, 0.3));
  }

  /* 导航栏按钮 - 粘土拟态 */
  .navbar-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: white;
    border: var(--clay-border-width) solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--pc-text-primary);
    font-family: var(--font-family);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal) var(--transition-bounce);
    white-space: nowrap;
    box-shadow: var(--clay-shadow-outer);
  }

  .navbar-btn:hover {
    background: var(--pc-bg-secondary);
    border-color: var(--pc-primary);
    color: var(--pc-primary);
    transform: translateY(-3px);
    box-shadow: var(--clay-shadow-hover);
  }

  .navbar-btn:active {
    transform: translateY(-1px) scale(0.98);
  }

  .navbar-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
  }

  .navbar-btn svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
  }

  .navbar-center {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex: 1;
    justify-content: center;
    padding: 0 var(--space-lg);
    height: 100%;
    flex-wrap: nowrap;
  }

  .navbar-left {
    display: flex;
    align-items: center;
    height: 100%;
    min-width: 180px;
  }

  .navbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    height: 100%;
    min-width: 60px;
  }

  .navbar-btn-icon {
    padding: var(--space-sm);
  }

  .navbar-btn-icon span {
    display: none;
  }

  /* 为导航栏留出空间 */
  .main-content {
    margin-top: 80px;
  }

  /* ============================================
     卡片与组件优化 - 毛玻璃+粘土拟态混合
     ============================================ */

  /* 玻璃拟态卡片 */
  .glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: var(--clay-border-width) solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-normal) var(--transition-bounce);
  }

  .glass-card:hover {
    border-color: var(--pc-primary);
    box-shadow: 0 12px 48px rgba(13, 148, 136, 0.25);
    transform: translateY(-4px);
  }

  /* 预览盒子 - 粘土拟态 */
  .preview-box {
    background: white;
    border: var(--clay-border-width) solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--clay-shadow-inner), var(--clay-shadow-outer);
    transition: all var(--transition-normal) var(--transition-bounce);
  }

  .preview-box:hover {
    border-color: var(--pc-primary);
    box-shadow: var(--clay-shadow-inner), var(--clay-shadow-hover);
    transform: translateY(-6px) scale(1.01);
  }

  .preview-box h3 {
    font-family: var(--font-family);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--pc-text-primary);
    margin-bottom: var(--space-lg);
  }

  /* 并排视图优化 */
  .side-by-side {
    gap: var(--space-2xl);
    max-width: 1400px;
    margin: 0 auto;
  }

  @media (min-width: 1920px) {
    .side-by-side {
      gap: 56px;
      max-width: 1600px;
    }
  }

  /* 按钮优化 - 粘土拟态 */
  .btn {
    border-radius: var(--clay-border-radius);
    border: var(--clay-border-width) solid var(--glass-border);
    padding: var(--space-sm) var(--space-lg);
    font-weight: 600;
    box-shadow: var(--clay-shadow-outer);
    transition: all var(--transition-normal) var(--transition-bounce);
    cursor: pointer;
  }

  .btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--clay-shadow-hover);
  }

  .btn:active {
    transform: translateY(-1px) scale(0.98);
  }

  .btn-primary {
    background: linear-gradient(135deg, var(--pc-primary) 0%, var(--pc-primary-light) 100%);
    color: white;
    border-color: var(--pc-primary-dark);
  }

  .btn-primary:hover {
    background: linear-gradient(135deg, var(--pc-primary-dark) 0%, var(--pc-primary) 100%);
  }

  .btn-secondary {
    background: white;
    color: var(--pc-text-primary);
    border-color: var(--glass-border);
  }

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

  /* 上传区域 - 粘土拟态 */
  .upload-area {
    background: white;
    border: 4px dashed var(--pc-primary-light);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    text-align: center;
    box-shadow: var(--clay-shadow-inner), var(--clay-shadow-outer);
    transition: all var(--transition-normal) var(--transition-bounce);
    cursor: pointer;
  }

  .upload-area:hover {
    background: var(--pc-bg-secondary);
    border-color: var(--pc-primary);
    border-style: solid;
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--clay-shadow-inner), var(--clay-shadow-hover);
  }

  .upload-area svg {
    color: var(--pc-primary);
    filter: drop-shadow(0 4px 8px rgba(13, 148, 136, 0.2));
  }

  /* Header优化 */
  header {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    margin: var(--space-lg);
    border: var(--clay-border-width) solid var(--glass-border);
    box-shadow: var(--glass-shadow);
  }

  header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--pc-text-primary);
    margin-bottom: var(--space-md);
  }

  header p {
    color: var(--pc-text-secondary);
    font-size: 1.1rem;
  }

  /* 特征徽章 - 粘土拟态 */
  .feature-badge {
    background: white;
    border: var(--clay-border-width) solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-sm) var(--space-md);
    box-shadow: var(--clay-shadow-outer);
    transition: all var(--transition-normal) var(--transition-bounce);
  }

  .feature-badge:hover {
    background: var(--pc-bg-secondary);
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--clay-shadow-hover);
  }

  .feature-badge svg {
    color: var(--pc-primary);
  }

  /* ============================================
     滚动条美化 - 粘土拟态
     ============================================ */

  .left-sidebar::-webkit-scrollbar {
    width: 12px;
  }

  .left-sidebar::-webkit-scrollbar-track {
    background: var(--pc-bg-secondary);
    border-radius: var(--radius-full);
    margin: var(--space-sm);
  }

  .left-sidebar::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--pc-primary) 0%, var(--pc-primary-light) 100%);
    border-radius: var(--radius-full);
    border: 2px solid var(--pc-bg-secondary);
    box-shadow: var(--clay-shadow-outer);
  }

  .left-sidebar::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--pc-primary-dark) 0%, var(--pc-primary) 100%);
    box-shadow: var(--clay-shadow-hover);
  }

  /* ============================================
     动画效果
     ============================================ */

  @keyframes float {
    0%, 100% {
      transform: translateY(0px);
    }
    50% {
      transform: translateY(-10px);
    }
  }

  @keyframes pulse-glow {
    0%, 100% {
      box-shadow: var(--clay-shadow-outer);
    }
    50% {
      box-shadow: var(--clay-shadow-hover);
    }
  }

  /* 浮动动画 */
  .navbar-logo {
    animation: float 3s ease-in-out infinite;
  }

  /* ============================================
     响应式断点优化
     ============================================ */

  /* 小屏PC (769px - 1024px) - 紧凑布局 */
  @media (max-width: 1024px) {
    .navbar-btn span {
      display: none;
    }

    .navbar-btn {
      padding: var(--space-sm);
    }

    .upload-area {
      padding: var(--space-xl);
    }

    .preview-section {
      padding: var(--space-lg);
    }
  }

  /* 超大屏 (≥1920px) - 宽松布局 */
  @media (min-width: 1920px) {
    .upload-area {
      padding: 80px;
    }

    header h1 {
      font-size: 3.5rem;
    }

    .preview-box {
      padding: var(--space-2xl);
    }
  }

  /* ============================================
     无障碍支持
     ============================================ */

  /* 减少动画 */
  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
    }
  }

  /* 焦点可见性 */
  *:focus-visible {
    outline: 3px solid var(--pc-accent);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
  }

} /* 结束 @media (min-width: 769px) */

/* ============================================
   打印样式优化
   ============================================ */

@media print {
  .left-sidebar,
  .pc-navbar,
  .sidebar-toggle,
  .sidebar-expand,
  .quick-actions,
  .view-toggle,
  footer {
    display: none !important;
  }

  .main-content {
    margin: 0 !important;
    padding: 0 !important;
  }

  .preview-container {
    box-shadow: none !important;
    border: 1px solid #ddd !important;
  }
}