@import "tailwindcss";
@import "tw-animate-css";

@custom-variant dark (&:is(.dark *));

:root {
  /* ===== iOS/Apple Design System Colors ===== */
  --background: oklch(1 0 0);
  --foreground: oklch(0.145 0 0);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.145 0 0);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.145 0 0);
  --primary: oklch(0.205 0 0);
  --primary-foreground: oklch(0.985 0 0);
  --secondary: oklch(0.97 0 0);
  --secondary-foreground: oklch(0.205 0 0);
  --muted: oklch(0.97 0 0);
  --muted-foreground: oklch(0.556 0 0);
  --accent: oklch(0.97 0 0);
  --accent-foreground: oklch(0.205 0 0);
  --destructive: oklch(0.577 0.245 27.325);
  --destructive-foreground: oklch(0.577 0.245 27.325);
  --border: oklch(0.922 0 0);
  --input: oklch(0.922 0 0);
  --ring: oklch(0.708 0 0);
  --chart-1: oklch(0.646 0.222 41.116);
  --chart-2: oklch(0.6 0.118 184.704);
  --chart-3: oklch(0.398 0.07 227.392);
  --chart-4: oklch(0.828 0.189 84.429);
  --chart-5: oklch(0.769 0.188 70.08);
  --radius: 1rem;
  --sidebar: oklch(0.985 0 0);
  --sidebar-foreground: oklch(0.145 0 0);
  --sidebar-primary: oklch(0.205 0 0);
  --sidebar-primary-foreground: oklch(0.985 0 0);
  --sidebar-accent: oklch(0.97 0 0);
  --sidebar-accent-foreground: oklch(0.205 0 0);
  --sidebar-border: oklch(0.922 0 0);
  --sidebar-ring: oklch(0.708 0 0);

  /* ===== Apple Frosted Glass Design Tokens ===== */
  /* 深色主题背景 - 模拟iOS深色模式 */
  --app-bg: #000000;
  --app-bg-secondary: #1c1c1e;
  --app-bg-tertiary: #2c2c2e;
  
  /* 毛玻璃效果 */
  --glass-bg: rgba(28, 28, 30, 0.72);
  --glass-bg-light: rgba(44, 44, 46, 0.65);
  --glass-bg-heavy: rgba(18, 18, 20, 0.85);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-light: rgba(255, 255, 255, 0.12);
  
  /* 品牌色 - 青绿色调 */
  --app-brand: #30d158;
  --app-brand-secondary: #34c759;
  --app-brand-hover: #28a745;
  --app-brand-light: rgba(48, 209, 88, 0.15);
  
  /* iOS系统色 */
  --ios-blue: #007aff;
  --ios-green: #30d158;
  --ios-indigo: #5856d6;
  --ios-orange: #ff9500;
  --ios-pink: #ff2d55;
  --ios-purple: #af52de;
  --ios-red: #ff3b30;
  --ios-teal: #5ac8fa;
  --ios-yellow: #ffcc00;
  
  /* 文字颜色 */
  --app-text: #ffffff;
  --app-text-secondary: rgba(235, 235, 245, 0.6);
  --app-text-tertiary: rgba(235, 235, 245, 0.3);
  --app-text-muted: #8e8e93;
  
  /* 分隔线和边框 */
  --app-separator: rgba(84, 84, 88, 0.65);
  --app-border: rgba(255, 255, 255, 0.1);
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(48, 209, 88, 0.3);
}

.dark {
  --background: oklch(0.145 0 0);
  --foreground: oklch(0.985 0 0);
  --card: oklch(0.145 0 0);
  --card-foreground: oklch(0.985 0 0);
  --popover: oklch(0.145 0 0);
  --popover-foreground: oklch(0.985 0 0);
  --primary: oklch(0.985 0 0);
  --primary-foreground: oklch(0.205 0 0);
  --secondary: oklch(0.269 0 0);
  --secondary-foreground: oklch(0.985 0 0);
  --muted: oklch(0.269 0 0);
  --muted-foreground: oklch(0.708 0 0);
  --accent: oklch(0.269 0 0);
  --accent-foreground: oklch(0.985 0 0);
  --destructive: oklch(0.396 0.141 25.723);
  --destructive-foreground: oklch(0.637 0.237 25.331);
  --border: oklch(0.269 0 0);
  --input: oklch(0.269 0 0);
  --ring: oklch(0.439 0 0);
  --chart-1: oklch(0.488 0.243 264.376);
  --chart-2: oklch(0.696 0.17 162.48);
  --chart-3: oklch(0.769 0.188 70.08);
  --chart-4: oklch(0.627 0.265 303.9);
  --chart-5: oklch(0.645 0.246 16.439);
  --sidebar: oklch(0.205 0 0);
  --sidebar-foreground: oklch(0.985 0 0);
  --sidebar-primary: oklch(0.488 0.243 264.376);
  --sidebar-primary-foreground: oklch(0.985 0 0);
  --sidebar-accent: oklch(0.269 0 0);
  --sidebar-accent-foreground: oklch(0.985 0 0);
  --sidebar-border: oklch(0.269 0 0);
  --sidebar-ring: oklch(0.439 0 0);
}

@theme inline {
  /* iOS San Francisco字体栈 */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", Menlo, Monaco, Consolas, monospace;
  
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --color-card: var(--card);
  --color-card-foreground: var(--card-foreground);
  --color-popover: var(--popover);
  --color-popover-foreground: var(--popover-foreground);
  --color-primary: var(--primary);
  --color-primary-foreground: var(--primary-foreground);
  --color-secondary: var(--secondary);
  --color-secondary-foreground: var(--secondary-foreground);
  --color-muted: var(--muted);
  --color-muted-foreground: var(--muted-foreground);
  --color-accent: var(--accent);
  --color-accent-foreground: var(--accent-foreground);
  --color-destructive: var(--destructive);
  --color-destructive-foreground: var(--destructive-foreground);
  --color-border: var(--border);
  --color-input: var(--input);
  --color-ring: var(--ring);
  --color-chart-1: var(--chart-1);
  --color-chart-2: var(--chart-2);
  --color-chart-3: var(--chart-3);
  --color-chart-4: var(--chart-4);
  --color-chart-5: var(--chart-5);
  --radius-sm: calc(var(--radius) - 8px);
  --radius-md: calc(var(--radius) - 4px);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) + 4px);
  --radius-2xl: calc(var(--radius) + 8px);
  --color-sidebar: var(--sidebar);
  --color-sidebar-foreground: var(--sidebar-foreground);
  --color-sidebar-primary: var(--sidebar-primary);
  --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
  --color-sidebar-accent: var(--sidebar-accent);
  --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
  --color-sidebar-border: var(--sidebar-border);
  --color-sidebar-ring: var(--sidebar-ring);

  /* Custom semantic tokens for app */
  --color-app-bg: var(--app-bg);
  --color-app-card: var(--glass-bg);
  --color-app-brand: var(--app-brand);
  --color-app-brand-hover: var(--app-brand-hover);
  --color-app-text: var(--app-text);
  --color-app-text-muted: var(--app-text-muted);
  --color-app-border: var(--app-border);
}

@layer base {
  * {
    @apply border-border outline-ring/50;
  }
  
  html {
    /* 启用iOS平滑滚动 */
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
  }
  
  body {
    @apply bg-background text-foreground;
    /* iOS安全区域适配 */
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }
}

/* ===== Apple Frosted Glass Components ===== */
@layer components {
  /* 毛玻璃卡片 */
  .glass-card {
    background: var(--glass-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
  }
  
  .glass-card-light {
    background: var(--glass-bg-light);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border: 1px solid var(--glass-border-light);
    border-radius: 1rem;
  }
  
  .glass-card-heavy {
    background: var(--glass-bg-heavy);
    backdrop-filter: saturate(200%) blur(30px);
    -webkit-backdrop-filter: saturate(200%) blur(30px);
    border: 1px solid var(--glass-border);
    border-radius: 1.25rem;
  }
  
  /* 毛玻璃导航栏 */
  .glass-nav {
    background: var(--glass-bg-heavy);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 0.5px solid var(--app-separator);
  }
  
  /* 毛玻璃弹窗 */
  .glass-modal {
    background: var(--glass-bg-heavy);
    backdrop-filter: saturate(200%) blur(40px);
    -webkit-backdrop-filter: saturate(200%) blur(40px);
    border: 1px solid var(--glass-border);
    border-radius: 1.5rem;
    box-shadow: var(--shadow-lg);
  }
  
  /* iOS风格按钮 */
  .btn-ios {
    @apply font-medium transition-all duration-200;
    background: var(--app-brand);
    color: white;
    border-radius: 0.75rem;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    letter-spacing: -0.01em;
  }
  
  .btn-ios:hover {
    background: var(--app-brand-hover);
    transform: scale(0.98);
  }
  
  .btn-ios:active {
    transform: scale(0.95);
  }
  
  .btn-ios-secondary {
    @apply font-medium transition-all duration-200;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--app-brand);
    border: 1px solid var(--glass-border);
    border-radius: 0.75rem;
    padding: 0.875rem 1.5rem;
  }
  
  /* iOS风格输入框 */
  .input-ios {
    background: var(--app-bg-secondary);
    border: none;
    border-radius: 0.625rem;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    color: var(--app-text);
    transition: all 0.2s ease;
  }
  
  .input-ios:focus {
    outline: none;
    box-shadow: 0 0 0 4px var(--app-brand-light);
  }
  
  .input-ios::placeholder {
    color: var(--app-text-tertiary);
  }
  
  /* iOS风格分割线 */
  .separator-ios {
    height: 0.5px;
    background: var(--app-separator);
    margin: 0 1rem;
  }
  
  /* iOS风格列表项 */
  .list-item-ios {
    @apply flex items-center justify-between px-4 py-3;
    background: var(--glass-bg-light);
    border-bottom: 0.5px solid var(--app-separator);
    transition: background 0.15s ease;
  }
  
  .list-item-ios:first-child {
    border-top-left-radius: 0.75rem;
    border-top-right-radius: 0.75rem;
  }
  
  .list-item-ios:last-child {
    border-bottom-left-radius: 0.75rem;
    border-bottom-right-radius: 0.75rem;
    border-bottom: none;
  }
  
  .list-item-ios:active {
    background: var(--glass-bg-heavy);
  }
  
  /* 书籍阅读器样式 */
  .book-reader {
    @apply min-h-screen;
    background: linear-gradient(180deg, #000000 0%, #1a1a1a 100%);
  }
  
  .book-page {
    @apply max-w-2xl mx-auto px-6 py-8;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-radius: 1rem;
    margin: 1rem;
  }
  
  .book-content {
    @apply prose prose-invert max-w-none;
    font-size: 1.0625rem;
    line-height: 1.8;
    letter-spacing: 0.01em;
  }
  
  .book-content h1,
  .book-content h2,
  .book-content h3 {
    @apply font-semibold;
    letter-spacing: -0.02em;
  }
  
  .book-content p {
    margin-bottom: 1.5em;
    text-align: justify;
  }
  
  /* 章节导航 */
  .chapter-nav {
    @apply fixed bottom-0 left-0 right-0;
    background: var(--glass-bg-heavy);
    backdrop-filter: saturate(180%) blur(20px);
    border-top: 0.5px solid var(--app-separator);
    padding-bottom: env(safe-area-inset-bottom);
  }
  
  /* 进度条 */
  .progress-bar {
    height: 3px;
    background: var(--app-bg-tertiary);
    border-radius: 1.5px;
    overflow: hidden;
  }
  
  .progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--app-brand) 0%, var(--app-brand-secondary) 100%);
    border-radius: 1.5px;
    transition: width 0.3s ease;
  }
  
  /* 骨架屏动画 */
  .skeleton {
    background: linear-gradient(
      90deg,
      var(--app-bg-secondary) 25%,
      var(--app-bg-tertiary) 50%,
      var(--app-bg-secondary) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 0.5rem;
  }
  
  @keyframes skeleton-loading {
    0% {
      background-position: 200% 0;
    }
    100% {
      background-position: -200% 0;
    }
  }
  
  /* 页面过渡动画 */
  .page-transition {
    animation: page-fade-in 0.3s ease-out;
  }
  
  @keyframes page-fade-in {
    from {
      opacity: 0;
      transform: translateY(10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  /* 弹窗动画 */
  .modal-overlay {
    animation: modal-overlay-in 0.25s ease-out;
  }
  
  .modal-content {
    animation: modal-content-in 0.3s cubic-bezier(0.32, 0.72, 0, 1);
  }
  
  @keyframes modal-overlay-in {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }
  
  @keyframes modal-content-in {
    from {
      opacity: 0;
      transform: scale(0.95) translateY(10px);
    }
    to {
      opacity: 1;
      transform: scale(1) translateY(0);
    }
  }
  
  /* 发光效果 */
  .glow {
    box-shadow: var(--shadow-glow);
  }
  
  .glow-text {
    text-shadow: 0 0 20px var(--app-brand);
  }
}

/* ===== 响应式适配 ===== */
@layer utilities {
  /* 移动端安全区域 */
  .safe-top {
    padding-top: env(safe-area-inset-top);
  }
  
  .safe-bottom {
    padding-bottom: env(safe-area-inset-bottom);
  }
  
  .safe-left {
    padding-left: env(safe-area-inset-left);
  }
  
  .safe-right {
    padding-right: env(safe-area-inset-right);
  }
  
  /* 触摸反馈 */
  .touch-feedback {
    -webkit-tap-highlight-color: transparent;
  }
  
  .touch-feedback:active {
    opacity: 0.7;
    transform: scale(0.98);
  }
  
  /* 隐藏滚动条但保持可滚动 */
  .scrollbar-hide {
    -ms-overflow-style: none;
    scrollbar-width: none;
  }
  
  .scrollbar-hide::-webkit-scrollbar {
    display: none;
  }
  
  /* iOS风格文字省略 */
  .text-ellipsis-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  
  .text-ellipsis-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
}