/**
 * LUT-AI 移动端响应式主题 - 2026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: 此文件仅在移动端（≤768px）生效，完全不影响PC端样式
 * 重要: 保持所有现有移动端功能和布局不变，仅更新视觉样式
 */

/* ============================================
   CSS 变量定义 - 2026现代配色方案（移动端）
   ============================================ */

:root {
  /* 主色调 - 青绿色系 (Teal Focus) - 与PC端统一 */
  --mobile-primary: #0D9488;
  --mobile-primary-light: #14B8A6;
  --mobile-primary-dark: #0F766E;
  --mobile-secondary: #14B8A6;

  /* 强调色 - 活力橙色 - 与PC端统一 */
  --mobile-accent: #F97316;
  --mobile-accent-hover: #EA580C;
  --mobile-accent-light: rgba(249, 115, 22, 0.15);

  /* 背景色 - 柔和渐变 - 与PC端统一 */
  --mobile-bg-primary: #F0FDFA;
  --mobile-bg-secondary: #CCFBF1;
  --mobile-bg-tertiary: #99F6E4;

  /* Aurora 渐变色 (用于装饰) - 青绿色调 */
  --mobile-aurora-1: #0D9488;
  --mobile-aurora-2: #14B8A6;
  --mobile-aurora-3: #2DD4BF;
  --mobile-aurora-4: #5EEAD4;

  /* 文字颜色 - 与PC端统一 */
  --mobile-text-primary: #134E4A;
  --mobile-text-secondary: #115E59;
  --mobile-text-muted: #5EEAD4;

  /* 毛玻璃效果 - 浅色版 */
  --mobile-glass-bg: rgba(255, 255, 255, 0.8);
  --mobile-glass-border: rgba(13, 148, 136, 0.2);
  --mobile-glass-blur: 20px;
  --mobile-glass-shadow: 0 8px 32px rgba(13, 148, 136, 0.15);

  /* 粘土拟态效果 - 浅色版 */
  --mobile-clay-border-width: 2px;
  --mobile-clay-border-radius: 18px;
  --mobile-clay-shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.05);
  --mobile-clay-shadow-outer: 0 4px 16px rgba(13, 148, 136, 0.15);
  --mobile-clay-shadow-hover: 0 8px 24px rgba(13, 148, 136, 0.25);

  /* 触摸目标最小尺寸 */
  --mobile-touch-min: 44px;

  /* 间距系统 */
  --mobile-space-xs: 8px;
  --mobile-space-sm: 12px;
  --mobile-space-md: 16px;
  --mobile-space-lg: 20px;
  --mobile-space-xl: 24px;

  /* 圆角系统 */
  --mobile-radius-sm: 12px;
  --mobile-radius-md: 16px;
  --mobile-radius-lg: 18px;
  --mobile-radius-xl: 20px;
  --mobile-radius-full: 9999px;

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

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

/* ============================================
   移动端基础样式（≤768px）
   ============================================ */

@media (max-width: 768px) {

  /* 全局字体 */
  body {
    font-family: var(--mobile-font-family);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: linear-gradient(180deg, #F0FDFA 0%, #CCFBF1 50%, #99F6E4 100%);
    background-attachment: fixed;
    position: relative;
    overflow-x: hidden;
  }

  /* 移除深色Aurora背景，使用纯白背景 */

  /* ============================================
     移动端底部导航栏 - 毛玻璃拟态
     ============================================ */

  .mobile-bottom-nav {
    background: linear-gradient(180deg, rgba(240, 253, 250, 0.95) 0%, rgba(204, 251, 241, 0.95) 100%) !important;
    backdrop-filter: blur(var(--mobile-glass-blur));
    -webkit-backdrop-filter: blur(var(--mobile-glass-blur));
    border-top: 2px solid rgba(13, 148, 136, 0.3);
    box-shadow: 0 -4px 24px rgba(13, 148, 136, 0.15), 0 -1px 3px rgba(13, 148, 136, 0.1);
  }

  .mobile-bottom-nav .nav-item {
    min-width: var(--mobile-touch-min);
    min-height: var(--mobile-touch-min);
    border-radius: var(--mobile-radius-md);
    transition: all var(--mobile-transition-normal) var(--mobile-transition-bounce);
    color: var(--mobile-text-secondary);
  }

  .mobile-bottom-nav .nav-item.active {
    background: linear-gradient(135deg, var(--mobile-primary) 0%, var(--mobile-primary-light) 100%);
    color: white;
    box-shadow: var(--mobile-clay-shadow-outer), 0 0 20px rgba(13, 148, 136, 0.4);
    transform: translateY(-4px);
  }

  .mobile-bottom-nav .nav-item:active {
    transform: scale(0.95);
  }

  /* ============================================
     浮动工具栏 - 毛玻璃拟态
     ============================================ */

  .floating-toolbar {
    background: linear-gradient(135deg, rgba(240, 253, 250, 0.95) 0%, rgba(204, 251, 241, 0.95) 100%) !important;
    backdrop-filter: blur(var(--mobile-glass-blur));
    -webkit-backdrop-filter: blur(var(--mobile-glass-blur));
    border: var(--mobile-clay-border-width) solid rgba(13, 148, 136, 0.3);
    border-radius: var(--mobile-radius-lg);
    box-shadow: var(--mobile-glass-shadow);
  }

  .toolbar-btn {
    min-width: var(--mobile-touch-min);
    min-height: var(--mobile-touch-min);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(240, 253, 250, 0.9) 100%);
    border-radius: var(--mobile-radius-md);
    border: 2px solid rgba(13, 148, 136, 0.3);
    box-shadow: var(--mobile-clay-shadow-outer);
    transition: all var(--mobile-transition-normal) var(--mobile-transition-bounce);
    color: var(--mobile-text-primary);
  }

  .toolbar-btn:active {
    transform: scale(0.9);
    box-shadow: var(--mobile-clay-shadow-inner);
    background: var(--mobile-primary);
    color: white;
  }

  /* ============================================
     浮动上传按钮 - 渐变粘土拟态
     ============================================ */

  .floating-upload-btn {
    background: linear-gradient(135deg, var(--mobile-primary) 0%, var(--mobile-primary-light) 100%);
    border: 3px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--mobile-radius-xl);
    box-shadow: var(--mobile-clay-shadow-outer), 0 0 30px rgba(13, 148, 136, 0.3), inset 0 1px 2px rgba(255, 255, 255, 0.3);
    transition: all var(--mobile-transition-normal) var(--mobile-transition-bounce);
    min-height: 120px;
    position: relative;
    overflow: hidden;
  }

  .floating-upload-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 3s infinite;
  }

  @keyframes shimmer {
    0% {
      transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
      transform: translateX(100%) translateY(100%) rotate(45deg);
    }
  }

  .floating-upload-btn:active {
    transform: scale(0.95);
    box-shadow: var(--mobile-clay-shadow-hover), 0 0 40px rgba(13, 148, 136, 0.5);
  }

  .floating-upload-btn svg {
    filter: drop-shadow(0 4px 8px rgba(255, 255, 255, 0.3));
    position: relative;
    z-index: 1;
  }

  /* ============================================
     浮动滤镜容器 - 毛玻璃拟态
     ============================================ */

  .floating-filter-container {
    background: linear-gradient(135deg, rgba(240, 253, 250, 0.95) 0%, rgba(204, 251, 241, 0.95) 100%);
    backdrop-filter: blur(var(--mobile-glass-blur));
    -webkit-backdrop-filter: blur(var(--mobile-glass-blur));
    border: var(--mobile-clay-border-width) solid rgba(13, 148, 136, 0.3);
    border-radius: var(--mobile-radius-lg);
    box-shadow: var(--mobile-glass-shadow);
  }

  .floating-filter-bar {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(240, 253, 250, 0.9) 100%);
    border-radius: var(--mobile-radius-md);
    padding: var(--mobile-space-sm);
    box-shadow: var(--mobile-clay-shadow-outer);
    border: 2px solid rgba(13, 148, 136, 0.2);
  }

  .filter-arrow-btn {
    min-width: var(--mobile-touch-min);
    min-height: var(--mobile-touch-min);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, var(--mobile-bg-secondary) 100%);
    border-radius: var(--mobile-radius-md);
    border: 2px solid rgba(13, 148, 136, 0.3);
    color: var(--mobile-primary);
    transition: all var(--mobile-transition-normal) var(--mobile-transition-bounce);
  }

  .filter-arrow-btn:active {
    transform: scale(0.9);
    background: linear-gradient(135deg, var(--mobile-primary) 0%, var(--mobile-primary-light) 100%);
    color: white;
    box-shadow: 0 0 20px rgba(13, 148, 136, 0.5);
  }

  /* ============================================
     移动端全屏查看器 - 纯白背景
     ============================================ */

  .mobile-fullscreen-viewer {
    background: linear-gradient(180deg, #F0FDFA 0%, #CCFBF1 100%);
  }

  .fullscreen-top-bar {
    background: linear-gradient(180deg, rgba(240, 253, 250, 0.95) 0%, rgba(204, 251, 241, 0.95) 100%);
    backdrop-filter: blur(var(--mobile-glass-blur));
    -webkit-backdrop-filter: blur(var(--mobile-glass-blur));
    border-bottom: 2px solid rgba(13, 148, 136, 0.3);
    box-shadow: 0 4px 16px rgba(13, 148, 136, 0.15);
  }

  .fullscreen-close-btn,
  .fullscreen-compare-btn {
    min-width: var(--mobile-touch-min);
    min-height: var(--mobile-touch-min);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(240, 253, 250, 0.9) 100%);
    border-radius: var(--mobile-radius-md);
    border: 2px solid rgba(13, 148, 136, 0.3);
    box-shadow: var(--mobile-clay-shadow-outer);
    transition: all var(--mobile-transition-normal) var(--mobile-transition-bounce);
    color: var(--mobile-text-primary);
  }

  .fullscreen-close-btn:active,
  .fullscreen-compare-btn:active {
    transform: scale(0.9);
    background: var(--mobile-primary);
    color: white;
  }

  .fullscreen-action-btn {
    min-width: 80px;
    min-height: var(--mobile-touch-min);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(240, 253, 250, 0.9) 100%);
    border: 2px solid rgba(13, 148, 136, 0.3);
    border-radius: var(--mobile-radius-lg);
    box-shadow: var(--mobile-clay-shadow-outer);
    transition: all var(--mobile-transition-normal) var(--mobile-transition-bounce);
    color: var(--mobile-text-primary);
    font-weight: 600;
  }

  .fullscreen-action-btn:active {
    transform: scale(0.95);
    box-shadow: var(--mobile-clay-shadow-inner);
    background: linear-gradient(135deg, var(--mobile-primary) 0%, var(--mobile-primary-light) 100%);
    color: white;
  }

  /* ============================================
     移动端抽屉 - 毛玻璃拟态
     ============================================ */

  .mobile-filter-drawer,
  .mobile-adjust-drawer {
    background: linear-gradient(180deg, #F0FDFA 0%, #CCFBF1 100%);
    border-top-left-radius: var(--mobile-radius-xl);
    border-top-right-radius: var(--mobile-radius-xl);
    box-shadow: 0 -8px 32px rgba(13, 148, 136, 0.2);
  }

  .drawer-header {
    background: linear-gradient(180deg, rgba(240, 253, 250, 0.95) 0%, rgba(204, 251, 241, 0.95) 100%);
    backdrop-filter: blur(var(--mobile-glass-blur));
    -webkit-backdrop-filter: blur(var(--mobile-glass-blur));
    border-bottom: 2px solid rgba(13, 148, 136, 0.3);
    padding: var(--mobile-space-md);
  }

  .drawer-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--mobile-text-primary);
  }

  .drawer-close {
    min-width: var(--mobile-touch-min);
    min-height: var(--mobile-touch-min);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(240, 253, 250, 0.9) 100%);
    border-radius: var(--mobile-radius-md);
    border: 2px solid rgba(13, 148, 136, 0.3);
    box-shadow: var(--mobile-clay-shadow-outer);
    transition: all var(--mobile-transition-normal) var(--mobile-transition-bounce);
  }

  .drawer-close:active {
    transform: scale(0.9);
  }

  /* ============================================
     控制组 - 粘土拟态
     ============================================ */

  .control-group {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(240, 253, 250, 0.95) 100%);
    border: 2px solid rgba(13, 148, 136, 0.3);
    border-radius: var(--mobile-clay-border-radius);
    padding: var(--mobile-space-md);
    margin: var(--mobile-space-sm) 0;
    box-shadow: var(--mobile-clay-shadow-inner), var(--mobile-clay-shadow-outer);
  }

  .control-group label {
    color: var(--mobile-text-primary);
    font-weight: 600;
    font-size: 0.95rem;
  }

  /* ============================================
     滑块样式 - 渐变粘土拟态
     ============================================ */

  input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 10px;
    background: linear-gradient(90deg, var(--mobile-bg-secondary) 0%, var(--mobile-bg-tertiary) 100%);
    border-radius: var(--mobile-radius-full);
    border: 2px solid rgba(13, 148, 136, 0.2);
    box-shadow: var(--mobile-clay-shadow-inner);
    outline: none;
  }

  input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--mobile-primary) 0%, var(--mobile-primary-light) 100%);
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: var(--mobile-clay-shadow-outer), 0 0 15px rgba(13, 148, 136, 0.4);
    cursor: pointer;
  }

  input[type="range"]::-moz-range-thumb {
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--mobile-primary) 0%, var(--mobile-primary-light) 100%);
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: var(--mobile-clay-shadow-outer), 0 0 15px rgba(13, 148, 136, 0.4);
    cursor: pointer;
  }

  /* ============================================
     按钮样式 - 渐变粘土拟态
     ============================================ */

  .btn,
  button:not(.toolbar-btn):not(.nav-item):not(.drawer-close) {
    min-height: var(--mobile-touch-min);
    border-radius: var(--mobile-clay-border-radius);
    border: 1px solid var(--mobile-glass-border);
    padding: var(--mobile-space-sm) var(--mobile-space-lg);
    font-weight: 600;
    box-shadow: var(--mobile-clay-shadow-outer);
    transition: all var(--mobile-transition-normal) var(--mobile-transition-bounce);
    cursor: pointer;
  }

  .btn:active,
  button:active {
    transform: scale(0.95);
  }

  .btn-primary {
    background: linear-gradient(135deg, var(--mobile-primary) 0%, var(--mobile-secondary) 100%);
    color: white;
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--mobile-clay-shadow-outer), 0 0 20px rgba(99, 102, 241, 0.2);
  }

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

  /* ============================================
     LUT滤镜卡片 - 粘土拟态
     ============================================ */

  .lut-card {
    background: white;
    border: 1px solid var(--mobile-glass-border);
    border-radius: var(--mobile-radius-lg);
    box-shadow: var(--mobile-clay-shadow-outer);
    transition: all var(--mobile-transition-normal) var(--mobile-transition-bounce);
  }

  .lut-card.active {
    border-color: var(--mobile-primary);
    box-shadow: var(--mobile-clay-shadow-hover), 0 0 25px rgba(99, 102, 241, 0.4);
    transform: scale(1.05);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
  }

  .lut-card:active {
    transform: scale(0.95);
  }

  /* ============================================
     移动端侧边栏 - 毛玻璃拟态
     ============================================ */

  .mobile-lut-sidebar {
    background: var(--mobile-glass-bg);
    backdrop-filter: blur(var(--mobile-glass-blur));
    -webkit-backdrop-filter: blur(var(--mobile-glass-blur));
    border: 1px solid var(--mobile-glass-border);
    border-radius: var(--mobile-radius-lg);
    box-shadow: var(--mobile-glass-shadow);
  }

  .lut-nav-btn {
    min-width: var(--mobile-touch-min);
    min-height: var(--mobile-touch-min);
    background: white;
    border-radius: var(--mobile-radius-md);
    border: 1px solid var(--mobile-glass-border);
    box-shadow: var(--mobile-clay-shadow-outer);
    transition: all var(--mobile-transition-normal) var(--mobile-transition-bounce);
    color: var(--mobile-primary);
  }

  .lut-nav-btn:active:not(:disabled) {
    transform: scale(0.9);
    background: linear-gradient(135deg, var(--mobile-primary) 0%, var(--mobile-secondary) 100%);
    color: white;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
  }

  .lut-nav-btn:disabled {
    opacity: 0.3;
  }

  /* ============================================
     模态框 - 毛玻璃拟态
     ============================================ */

  .mobile-intensity-modal,
  .mobile-lut-modal {
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }

  .intensity-modal-content,
  .lut-modal-content {
    background: white;
    border-radius: var(--mobile-radius-xl);
    border: 1px solid var(--mobile-glass-border);
    box-shadow: 0 16px 48px rgba(99, 102, 241, 0.2);
  }

  /* ============================================
     强度滑块 - 渐变粘土拟态
     ============================================ */

  .intensity-slider-horizontal {
    height: 12px;
    background: var(--mobile-bg-secondary);
    border-radius: var(--mobile-radius-full);
    border: 1px solid var(--mobile-glass-border);
    box-shadow: var(--mobile-clay-shadow-inner);
  }

  .intensity-value-large {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--mobile-primary) 0%, var(--mobile-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 4px 8px rgba(99, 102, 241, 0.2));
  }

  /* ============================================
     触摸反馈优化
     ============================================ */

  /* 增加触摸目标间距 */
  .nav-item + .nav-item,
  .toolbar-btn + .toolbar-btn,
  .fullscreen-action-btn + .fullscreen-action-btn {
    margin-left: var(--mobile-space-sm);
  }

  /* 防止意外滚动 */
  body {
    overscroll-behavior: contain;
  }

  /* ============================================
     滚动条美化（移动端WebKit）
     ============================================ */

  .drawer-content::-webkit-scrollbar {
    width: 8px;
  }

  .drawer-content::-webkit-scrollbar-track {
    background: var(--mobile-bg-secondary);
    border-radius: var(--mobile-radius-full);
  }

  .drawer-content::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--mobile-primary) 0%, var(--mobile-primary-light) 100%);
    border-radius: var(--mobile-radius-full);
    border: 2px solid var(--mobile-bg-secondary);
  }

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

  @keyframes mobile-float {
    0%, 100% {
      transform: translateY(0px);
    }
    50% {
      transform: translateY(-6px);
    }
  }

  @keyframes mobile-pulse {
    0%, 100% {
      opacity: 1;
    }
    50% {
      opacity: 0.8;
    }
  }

  /* ============================================
     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(--mobile-accent);
    outline-offset: 2px;
    border-radius: var(--mobile-radius-sm);
  }

  /* 高对比度模式支持 */
  @media (prefers-contrast: high) {
    .mobile-bottom-nav,
    .floating-toolbar,
    .floating-filter-container {
      border-width: 4px;
    }

    .btn,
    button {
      border-width: 4px;
    }
  }

} /* 结束 @media (max-width: 768px) */