/* ============================================
   Trump Monitor - 2025 融合设计系统
   Warm Modern Design System
   - 温暖的未来主义
   - 方案2米色背景 + 方案3多彩渐变
   - Notion级舒适 + Stripe级活力
   ============================================ */

/* ============================================
   1. CSS 变量设计系统 - 融合版
   ============================================ */
:root {
  /* 🎨 多彩主色系统（方案3） */
  --color-primary: #06b6d4;        /* 霓虹青 */
  --color-primary-light: #22d3ee;  /* 亮青 */
  --color-accent: #ec4899;         /* 霓虹粉 */
  --color-accent-light: #f472b6;   /* 亮粉 */
  --color-purple: #a855f7;         /* 霓虹紫 */
  --color-purple-light: #c084fc;   /* 亮紫 */
  --color-blue: #3b82f6;           /* 霓虹蓝 */

  /* 中性色（深灰系） */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* 语义色 */
  --color-success: #10b981;
  --color-success-bg: #d1fae5;
  --color-success-text: #065f46;
  --color-error: #ef4444;
  --color-error-bg: #fee2e2;
  --color-error-text: #991b1b;

  /* 表面色 - 奶白色（方案2） */
  --color-surface: rgba(255, 252, 247, 0.85);
  --color-surface-hover: rgba(255, 252, 247, 0.95);
  --color-surface-border: rgba(107, 114, 128, 0.15);

  /* 背景色 - 米色（方案2） */
  --color-background-start: #faf8f5;
  --color-background-end: #f5f1ea;

  /* 📏 间距系统（8px 网格） */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-8: 64px;
  --space-10: 80px;
  --space-12: 96px;
  --space-16: 128px;

  /* 🔘 圆角系统 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* 🌑 阴影系统（暖色调） */
  --shadow-xs: 0 1px 2px rgba(107, 114, 128, 0.06);
  --shadow-sm: 0 1px 3px rgba(107, 114, 128, 0.08), 0 1px 2px rgba(107, 114, 128, 0.06);
  --shadow-md: 0 4px 8px rgba(107, 114, 128, 0.08), 0 2px 4px rgba(107, 114, 128, 0.06);
  --shadow-lg: 0 8px 16px rgba(107, 114, 128, 0.1), 0 4px 8px rgba(107, 114, 128, 0.08);
  --shadow-xl: 0 16px 32px rgba(107, 114, 128, 0.12), 0 8px 16px rgba(107, 114, 128, 0.1);
  --shadow-2xl: 0 24px 48px rgba(107, 114, 128, 0.16), 0 12px 24px rgba(107, 114, 128, 0.14);

  /* ✨ 发光效果（方案3，强度降低50%） */
  --glow-cyan: 0 0 20px rgba(6, 182, 212, 0.4);
  --glow-pink: 0 0 20px rgba(236, 72, 153, 0.4);
  --glow-purple: 0 0 20px rgba(168, 85, 247, 0.4);
  --glow-multi: 0 0 30px rgba(6, 182, 212, 0.3), 0 0 50px rgba(236, 72, 153, 0.2);

  /* 🪟 毛玻璃效果（方案3强度） */
  --blur-glass: blur(40px) saturate(180%);
  --blur-glass-heavy: blur(50px) saturate(200%);

  /* 📝 字体系统 */
  --font-sans: 'SF Pro Display', 'Segoe UI Variable', -apple-system, BlinkMacSystemFont,
               'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

  /* 字号系统 */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 1.875rem;  /* 30px */
  --text-4xl: 2.25rem;   /* 36px */
  --text-5xl: 3rem;      /* 48px */
  --text-6xl: 3.75rem;   /* 60px */
  --text-7xl: 4.5rem;    /* 72px */

  /* 行高系统 */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 1.75;
  --leading-extra: 1.8;

  /* ⏱️ 动画时长 */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 350ms;
  --duration-slower: 500ms;

  /* 🎭 缓动函数 */
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* 🎨 2025设计增强 - Logo专用阴影 */
  --shadow-logo: 0 2px 8px rgba(6, 182, 212, 0.15),
                 0 1px 3px rgba(6, 182, 212, 0.1);
  --shadow-logo-hover: 0 4px 12px rgba(6, 182, 212, 0.25),
                       0 2px 6px rgba(236, 72, 153, 0.15);

  /* 🌐 语言选择器专用变量 */
  --selector-bg: rgba(255, 252, 247, 0.7);
  --selector-bg-hover: rgba(255, 252, 247, 0.9);
  --selector-border: rgba(107, 114, 128, 0.15);
  --selector-shadow: 0 2px 8px rgba(107, 114, 128, 0.1),
                     0 1px 3px rgba(107, 114, 128, 0.06);
}

/* ============================================
   2. 基础样式重置
   ============================================ */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ============================================
   3. 背景层 - 米色渐变 + 微妙纹理（方案2）
   ============================================ */
body {
  font-family: var(--font-sans);
  line-height: var(--leading-relaxed);
  color: var(--color-gray-700);

  /* 多层背景 */
  background:
    /* 噪点纹理层 */
    url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.9" numOctaves="3" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23noise)" opacity="0.03"/></svg>'),
    /* 可选：微妙彩色光晕 */
    radial-gradient(circle at 85% 15%, rgba(6, 182, 212, 0.06), transparent 40%),
    radial-gradient(circle at 15% 85%, rgba(236, 72, 153, 0.06), transparent 40%),
    /* 米色渐变层 */
    linear-gradient(135deg, var(--color-background-start) 0%, var(--color-background-end) 100%);

  background-attachment: fixed;
  background-size: 200px 200px, 100% 100%, 100% 100%, cover;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ============================================
   4. 布局容器
   ============================================ */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-4);
}

/* ============================================
   4.5 语言选择器 - 2025绝对定位优化
   ============================================ */
.language-selector {
  /* 绝对定位到右上角 */
  position: absolute;
  top: 20px;
  right: 24px;
  z-index: 10;

  /* 布局 */
  display: flex;
  align-items: center;
  gap: 8px;

  /* 去除独立容器样式 */
  background: none;
  border: none;
  box-shadow: none;
  padding: 0;
}

.language-icon {
  font-size: var(--text-sm);
  opacity: 0.8;
  transition: opacity var(--duration-fast);
}

.language-selector select {
  /* 基础样式重置 */
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;

  /* 布局 - 紧凑设计 */
  padding: 6px 28px 6px 10px;
  min-width: 110px;

  /* 字体 - 14px */
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-gray-700);

  /* 视觉效果 - 轻量化 */
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(107, 114, 128, 0.15);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-xs);

  /* 下拉箭头 */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%234b5563' d='M3 4.5l3 3 3-3'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  background-size: 12px;

  /* 交互 */
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
  opacity: 0.8;
}

.language-selector select:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  opacity: 1;
}

.language-selector select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1),
              var(--shadow-sm);
  opacity: 1;
}

/* 选项样式 */
.language-selector select option {
  padding: var(--space-2);
  background: white;
  color: var(--color-gray-700);
  font-weight: 500;
}

/* ============================================
   5. 订阅区域 - 奶白色强毛玻璃
   ============================================ */
.subscribe-section {
  /* 定位上下文（语言选择器绝对定位的父元素） */
  position: relative;

  /* 强毛玻璃效果（方案3强度） */
  background: var(--color-surface);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);

  /* Firefox 降级方案 */
  @supports not (backdrop-filter: blur(40px)) {
    background: rgba(255, 252, 247, 0.95);
  }

  /* 边框和圆角 */
  border: 1px solid var(--color-surface-border);
  border-radius: var(--radius-2xl);

  /* 间距 - 2025优化：顶部增加空间给语言选择器呼吸 */
  padding: 68px var(--space-3) var(--space-6);  /* 68px(顶部) 24px 48px */
  margin-bottom: var(--space-4);  /* 32px */

  /* 暖色阴影 + 微妙内边框高光 */
  box-shadow:
    0 0 0 1px rgba(6, 182, 212, 0.05) inset,
    var(--shadow-2xl);

  /* 布局 */
  text-align: center;

  /* 动画 */
  transition: all var(--duration-slow) var(--ease-smooth);
}

.subscribe-section:hover {
  transform: translateY(-3px);
  background: var(--color-surface-hover);
  border-color: rgba(6, 182, 212, 0.2);
  box-shadow:
    0 0 0 1px rgba(6, 182, 212, 0.1) inset,
    0 32px 64px rgba(107, 114, 128, 0.2),
    var(--glow-multi);
}

/* Analysis页面隐藏订阅区域 */
.subscribe-section.hidden {
  display: none;
}

/* 标题样式 - 深灰 + 彩虹渐变 + 微妙发光（2025优化） */
.subscribe-section h1 {
  /* 字号优化：48px → 28px */
  font-size: 1.75rem;  /* 28px - 更适中的字号 */
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.3;  /* 行高1.3，更紧凑 */
  margin-bottom: var(--space-3);  /* 24px */

  /* 彩虹渐变文字 - 降低饱和度15% */
  background: linear-gradient(135deg,
    #2E6B8E 0%,    /* 深蓝（降低饱和度） */
    #4A8FBF 25%,   /* 中蓝 */
    #5B7BC5 50%,   /* 偏紫蓝 */
    #8B6FB8 75%,   /* 紫色（降低饱和度） */
    #B565A7 100%); /* 粉紫（降低饱和度） */
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;

  /* 微妙发光效果（减弱30%，更专业） */
  filter: drop-shadow(0 0 12px rgba(6, 182, 212, 0.15))
          drop-shadow(0 0 20px rgba(236, 72, 153, 0.1));
}

/* 副标题 - 深灰色 + 透明度优化 */
.subtitle {
  font-size: var(--text-xl);
  line-height: var(--leading-loose);
  color: var(--color-gray-600);
  opacity: 0.7;  /* 降低视觉权重 */
  margin-bottom: var(--space-5);  /* 40px - 与表单间距 */
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 400;
}

/* ============================================
   6. 表单样式 - 多彩渐变（方案3）
   ============================================ */
#subscribe-form {
  display: flex;
  gap: var(--space-2);
  max-width: 500px;
  margin: 0 auto var(--space-5);
}

/* 输入框 - 白色背景 */
#email-input {
  flex: 1;
  padding: var(--space-3) var(--space-4);

  /* 边框和圆角 */
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-lg);

  /* 字体 */
  font-size: var(--text-lg);
  font-family: var(--font-sans);
  color: var(--color-gray-800);
  font-weight: 400;

  /* 背景 */
  background: rgba(255, 255, 255, 0.8);

  /* 阴影 */
  box-shadow: var(--shadow-sm);

  /* 动画 */
  transition: all var(--duration-normal) var(--ease-smooth);

  /* 性能优化 */
  will-change: border-color, box-shadow;
}

#email-input::placeholder {
  color: var(--color-gray-400);
  font-weight: 400;
}

/* 焦点状态 - 青色发光（方案3） */
#email-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #ffffff;
  box-shadow:
    0 0 0 4px rgba(6, 182, 212, 0.15),
    var(--glow-cyan),
    var(--shadow-md);
  transform: translateY(-1px);
}

/* 按钮样式 - 青粉渐变 + 发光（方案3） */
#subscribe-btn {
  padding: var(--space-3) var(--space-6);

  /* 霓虹渐变背景 */
  background: linear-gradient(135deg,
    var(--color-primary) 0%,
    var(--color-blue) 50%,
    var(--color-accent) 100%);
  color: white;

  /* 边框和圆角 */
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);

  /* 字体 */
  font-size: var(--text-lg);
  font-weight: 700;
  font-family: var(--font-sans);
  letter-spacing: -0.01em;

  /* 阴影 + 发光 */
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.1) inset,
    var(--shadow-lg),
    var(--glow-cyan);

  /* 光标 */
  cursor: pointer;

  /* 动画 */
  transition: all var(--duration-normal) var(--ease-smooth);

  /* 性能优化 */
  will-change: transform, box-shadow;
}

/* 按钮悬停效果 - 多彩发光 */
#subscribe-btn:hover:not(:disabled) {
  background: linear-gradient(135deg,
    var(--color-primary-light) 0%,
    var(--color-purple) 50%,
    var(--color-accent-light) 100%);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow:
    0 0 0 2px rgba(255, 255, 255, 0.2) inset,
    0 12px 24px rgba(107, 114, 128, 0.15),
    0 0 30px rgba(6, 182, 212, 0.6),
    0 0 50px rgba(236, 72, 153, 0.4);
  transform: translateY(-2px);
}

/* 按钮按下效果 */
#subscribe-btn:active:not(:disabled) {
  transform: translateY(0) scale(0.98);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.1) inset,
    var(--shadow-sm);
}

/* 禁用状态 */
#subscribe-btn:disabled {
  background: var(--color-gray-300);
  color: var(--color-gray-500);
  border-color: var(--color-gray-200);
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
  box-shadow: var(--shadow-sm);
}

/* 焦点状态 */
#subscribe-btn:focus-visible {
  outline: 3px solid rgba(6, 182, 212, 0.4);
  outline-offset: 3px;
}

/* 极简登录入口 - 2025最小化设计 */
.login-link-minimal {
  margin-top: var(--space-5);
  text-align: right;
  font-size: 12px;
  line-height: 1.4;
  padding-right: var(--space-2);
}

.login-prompt {
  color: var(--color-gray-500);
  opacity: 0.6;
  margin-right: 4px;
  font-weight: 400;
}

.login-link-subtle {
  color: var(--color-primary);
  opacity: 0.7;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.login-link-subtle:hover {
  opacity: 1;
  color: var(--color-blue);
}

.login-link-subtle:hover .login-text {
  text-decoration: underline;
  text-decoration-color: rgba(6, 182, 212, 0.4);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.login-text {
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.login-arrow {
  display: inline-block;
  margin-left: 2px;
  opacity: 0;
  transform: translateX(-4px);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.login-link-subtle:hover .login-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================
   7. 消息提示
   ============================================ */
.message {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin-top: var(--space-4);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  font-weight: 500;

  /* 动画 */
  animation: fadeInSlide var(--duration-slow) var(--ease-smooth);
}

@keyframes fadeInSlide {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message.success {
  background: var(--color-success-bg);
  color: var(--color-success-text);
  border: 2px solid var(--color-success);
}

.message.error {
  background: var(--color-error-bg);
  color: var(--color-error-text);
  border: 2px solid var(--color-error);
}

/* ============================================
   7.5. 登录用户头部 - 紧凑设计（高度优化）
   ============================================ */

/* 主容器 - 紧凑版 glassmorphism */
.logged-in-compact {
  backdrop-filter: blur(40px) saturate(180%);
  -webkit-backdrop-filter: blur(40px) saturate(180%);
  background: linear-gradient(
    135deg,
    rgba(255, 252, 247, 0.92) 0%,
    rgba(255, 252, 247, 0.85) 100%
  );

  @supports not (backdrop-filter: blur(40px)) {
    background: rgba(255, 252, 247, 0.98);
  }

  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: var(--radius-2xl);

  /* 紧凑padding（减少50%） */
  padding: var(--space-4) var(--space-6);  /* 32px 48px（从64px 48px缩小） */
  margin-bottom: var(--space-4);
  max-width: 520px;  /* 宽度保持不变 */
  margin-left: auto;
  margin-right: auto;

  box-shadow:
    0 0 0 1px rgba(6, 182, 212, 0.1) inset,
    0 16px 32px rgba(107, 114, 128, 0.12);  /* 简化阴影 */

  text-align: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  animation: fadeIn 0.3s ease both;  /* 简化动画 */
}

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

.logged-in-compact:hover {
  transform: translateY(-2px);  /* 从-3px缩小 */
  box-shadow:
    0 0 0 1px rgba(6, 182, 212, 0.15) inset,
    0 20px 40px rgba(107, 114, 128, 0.15);  /* 简化 */
}

/* 简单问候标题 */
.welcome-compact {
  font-size: 18px;  /* 从24px缩小 */
  font-weight: 600;  /* 从700降低 */
  color: var(--color-gray-800);
  margin: 0 0 8px 0;  /* 紧凑margin */
  letter-spacing: -0.01em;
}

/* 紧凑邮箱显示 */
.email-compact {
  font-size: 14px;  /* 从16px缩小 */
  color: var(--color-gray-600);
  font-weight: 500;
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
  margin: 0 0 var(--space-2);  /* 16px（从24px缩小） */
}

/* 紧凑状态卡片 */
.status-card-compact {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);

  border: 1px solid rgba(6, 182, 212, 0.12);
  border-radius: 12px;  /* 从16px缩小 */
  padding: var(--space-2) 20px;  /* 16px 20px（从24px 24px缩小） */
  margin: var(--space-2) 0 20px;  /* 16px 0 20px（从32px 0 40px缩小） */

  box-shadow: 0 4px 12px rgba(107, 114, 128, 0.06);  /* 简化阴影 */
  text-align: left;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.status-card-compact:hover {
  transform: translateY(-1px);  /* 从-2px缩小 */
  border-color: rgba(6, 182, 212, 0.2);
  box-shadow: 0 6px 16px rgba(107, 114, 128, 0.08);
}

.status-row {
  display: flex;
  align-items: center;
  gap: 10px;  /* 从16px缩小 */
  padding: 8px 0;  /* 从16px 0缩小 */
}

.status-row:not(:last-child) {
  border-bottom: 1px solid rgba(107, 114, 128, 0.06);
}

.status-icon {
  font-size: 14px;  /* 从16px缩小 */
  flex-shrink: 0;
}

.status-label {
  font-size: 13px;  /* 从14px缩小 */
  color: var(--color-gray-600);
  font-weight: 500;
  flex-shrink: 0;
}

.status-value {
  font-size: 13px;  /* 从14px缩小 */
  color: var(--color-gray-800);
  font-weight: 600;
  margin-left: auto;
}

.status-active {
  color: var(--color-success);
}

/* 紧凑按钮组 */
.button-group-compact {
  display: flex;
  gap: 12px;  /* 从16px缩小 */
  justify-content: center;
  align-items: center;
}

/* 紧凑主按钮 */
.btn-primary-compact {
  display: inline-flex;
  align-items: center;
  gap: 8px;  /* 从16px缩小 */

  padding: 12px 24px;  /* 从24px 40px缩小 */

  background: linear-gradient(135deg,
    var(--color-primary) 0%,
    var(--color-blue) 50%,
    var(--color-accent) 100%);
  color: white;

  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);

  font-size: 14px;  /* 从16px缩小 */
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;

  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.25);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);

  position: relative;
  overflow: hidden;
}

.btn-primary-compact::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    rgba(255, 255, 255, 0.1),
    transparent);
  opacity: 0;
  transition: opacity 0.2s;
}

.btn-primary-compact:hover {
  transform: translateY(-2px);
  box-shadow:
    0 8px 20px rgba(6, 182, 212, 0.35),
    0 0 30px rgba(6, 182, 212, 0.2);
}

.btn-primary-compact:hover::before {
  opacity: 1;
}

.btn-primary-compact:hover .btn-arrow {
  transform: translateX(4px);
}

.btn-primary-compact:active {
  transform: translateY(0);
}

.btn-arrow {
  width: 16px;  /* 从18px缩小 */
  height: 16px;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 紧凑Ghost按钮 */
.btn-ghost-compact {
  padding: 12px 20px;  /* 从24px 32px缩小 */

  background: transparent;
  color: var(--color-gray-600);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);

  font-size: 13px;  /* 从14px缩小 */
  font-weight: 600;
  font-family: var(--font-sans);

  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-ghost-compact:hover {
  background: rgba(107, 114, 128, 0.08);
  color: var(--color-gray-800);
  border-color: rgba(107, 114, 128, 0.15);
}

.btn-ghost-compact:active {
  background: rgba(107, 114, 128, 0.12);
}

/* ============================================
   8. 帖子区域
   ============================================ */
.posts-section h2 {
  font-size: var(--text-4xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: var(--leading-tight);
  color: var(--color-gray-900);
  margin-bottom: var(--space-8);
}

#posts-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* ============================================
   9. 帖子卡片 - 米黄色强毛玻璃 + Hover发光
   ============================================ */
.post-card {
  /* 强毛玻璃效果 + 米黄色背景 */
  background: linear-gradient(135deg,
    rgba(255, 250, 240, 0.9) 0%,     /* 象牙白 */
    rgba(255, 245, 230, 0.9) 100%);  /* 米黄色 */
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);

  /* Firefox 降级方案 */
  @supports not (backdrop-filter: blur(40px)) {
    background: linear-gradient(135deg,
      rgba(255, 250, 240, 0.98) 0%,
      rgba(255, 245, 230, 0.98) 100%);
  }

  /* 边框和圆角 */
  border: 2px solid rgba(245, 158, 11, 0.15);
  border-radius: var(--radius-xl);

  /* 间距 */
  padding: var(--space-6);

  /* 暖色阴影 + 内边框高光 */
  box-shadow:
    0 0 0 1px rgba(6, 182, 212, 0.05) inset,
    var(--shadow-xl);

  /* 动画 */
  transition: all var(--duration-slow) var(--ease-smooth);

  /* 性能优化 */
  will-change: transform, box-shadow;
}

/* 卡片悬停效果 - 多彩发光 */
.post-card:hover {
  transform: translateY(-4px) scale(1.003);
  background: linear-gradient(135deg,
    rgba(255, 250, 240, 0.98) 0%,
    rgba(255, 245, 230, 0.98) 100%);
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow:
    0 0 0 1px rgba(6, 182, 212, 0.1) inset,
    0 20px 40px rgba(107, 114, 128, 0.16),
    var(--glow-multi);
}

/* Header 区域 */
.post-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(107, 114, 128, 0.1);
  gap: var(--space-3);
}

/* 作者信息区域 */
.post-author-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
}

/* 头像样式 - 2025设计（青-粉渐变边框模拟） */
.post-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.9);  /* 白色内边框 */
  box-shadow:
    /* 青-粉渐变边框模拟（多层阴影） */
    0 0 0 1px rgba(6, 182, 212, 0.4),          /* 青色内圈 */
    0 0 0 2px rgba(168, 85, 247, 0.3),         /* 紫色中圈 */
    0 0 0 3px rgba(236, 72, 153, 0.25),        /* 粉色外圈 */
    /* 白色间隔 */
    0 0 0 4px rgba(255, 255, 255, 0.5),
    /* 外部阴影 */
    0 3px 8px rgba(107, 114, 128, 0.12);
  transition: all var(--duration-normal) var(--ease-smooth);
  flex-shrink: 0;
}

.post-avatar:hover {
  transform: scale(1.08);
  box-shadow:
    /* 增强的渐变效果 */
    0 0 0 1px rgba(6, 182, 212, 0.7),
    0 0 0 2px rgba(168, 85, 247, 0.5),
    0 0 0 3px rgba(236, 72, 153, 0.4),
    0 0 0 4px rgba(255, 255, 255, 0.8),
    /* 发光效果 */
    0 0 16px rgba(6, 182, 212, 0.3),
    0 0 24px rgba(236, 72, 153, 0.2);
}

/* 用户详情 */
.post-author-details {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

/* 用户名 */
.post-author-name {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-gray-900);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

/* 用户handle */
.post-author-handle {
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.post-author-handle:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* 日期标签 - 青色背景高亮 */
.post-date {
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  background: rgba(6, 182, 212, 0.1);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  white-space: nowrap;
  flex-shrink: 0;
  border: 1px solid rgba(6, 182, 212, 0.2);
}

/* 帖子内容区域 */
.post-content {
  margin-bottom: 0;
}

/* 帖子文字内容 */
.post-text {
  font-size: var(--text-xl);
  line-height: var(--leading-extra);
  color: var(--color-gray-800);
  white-space: pre-wrap;
  word-wrap: break-word;
  font-weight: 400;
  margin-bottom: var(--space-4);

  /* 更好的文字渲染 */
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* ============================================
   简单URL链接样式
   ============================================ */

.simple-url-link {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px dashed rgba(6, 182, 212, 0.5);
  padding: 2px 4px;
  border-radius: 4px;
  background: rgba(6, 182, 212, 0.05);
  word-break: break-all;
  font-size: var(--text-base);
  transition: all var(--duration-fast) var(--ease-smooth);
}

.simple-url-link:hover {
  background: rgba(6, 182, 212, 0.15);
  border-bottom-style: solid;
  border-bottom-color: var(--color-accent);
  color: var(--color-accent);
}

/* 帖子图片 */
.post-images {
  margin-bottom: var(--space-4);
  display: grid;
  gap: var(--space-2);
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.post-image {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

/* Footer 区域 */
.post-footer {
  padding-top: var(--space-4);
  border-top: 1px solid rgba(107, 114, 128, 0.1);
  text-align: right;
}

/* 媒体小图标样式 */
.media-icon-wrapper {
  display: inline-block;
  margin: 8px 0;
  line-height: 0;
}

.media-icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  border-radius: 8px;
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.15s ease;
  cursor: pointer;
}

.media-icon-link:hover {
  background-color: rgba(6, 182, 212, 0.1);
  transform: scale(1.15);
}

.media-icon-link:active {
  transform: scale(0.95);
}

.media-icon-link.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.media-link-icon {
  width: 24px;
  height: 24px;
  display: block;
  opacity: 0.75;
  transition: opacity 0.2s ease;
}

.media-icon-link:hover .media-link-icon {
  opacity: 1;
}

.media-link {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--duration-fast) var(--ease-smooth);
}

.media-link:hover {
  border-color: var(--color-primary);
}

/* NEW: Post media container */
.post-media {
  margin: var(--space-2) 0 var(--space-4) 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}


/* NEW: Thumbnail styling */
.post-thumbnail {
  width: 100%;
  max-height: 500px;
  object-fit: contain;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--duration-normal) var(--ease-smooth),
              box-shadow var(--duration-normal) var(--ease-smooth);
}

.post-thumbnail:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}


/* NEW: Failed images (hide broken image icon) */
.post-media.image-load-failed {
  display: none;
}

/* NEW: Multiple images grid */
.post-media:has(a:nth-child(2)) {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2);
  padding: var(--space-2);
}

.post-media:has(a:nth-child(2)) .post-thumbnail {
  max-height: 300px;
  object-fit: cover;
}

/* NEW: Tooltip on hover */
.post-media a[title] {
  position: relative;
}

.post-media a[title]:hover::after {
  content: attr(title);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(31, 41, 55, 0.95);
  color: white;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  white-space: nowrap;
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  z-index: 1000;
  margin-bottom: var(--space-2);
  pointer-events: none;
  box-shadow: var(--shadow-md);
}

/* 查看原文链接 - 青粉渐变 + 发光 */
.post-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);

  /* 霓虹渐变背景 */
  background: linear-gradient(135deg,
    var(--color-primary) 0%,
    var(--color-accent) 100%);
  color: white;

  /* 边框和圆角 */
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);

  /* 字体 */
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.01em;

  /* 阴影 + 发光 */
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.1) inset,
    var(--shadow-md),
    var(--glow-cyan);

  /* 动画 */
  transition: all var(--duration-normal) var(--ease-smooth);
}

.post-link:hover {
  background: linear-gradient(135deg,
    var(--color-primary-light) 0%,
    var(--color-accent-light) 100%);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow:
    0 0 0 2px rgba(255, 255, 255, 0.2) inset,
    0 8px 20px rgba(107, 114, 128, 0.12),
    0 0 30px rgba(6, 182, 212, 0.6),
    0 0 50px rgba(236, 72, 153, 0.4);
  transform: translateY(-2px);
}

.post-link:active {
  transform: translateY(0) scale(0.98);
}

/* ============================================
   10. 状态提示
   ============================================ */
.loading,
.no-posts,
.error {
  text-align: center;
  padding: var(--space-12);
  font-size: var(--text-xl);
  color: var(--color-gray-500);
  line-height: var(--leading-relaxed);
  font-weight: 500;
}

.error {
  color: var(--color-error-text);
  background: var(--color-error-bg);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 2px solid var(--color-error);
}

/* 加载动画 */
.loading {
  animation: pulse 2.5s var(--ease-smooth) infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

/* ============================================
   11. 页脚
   ============================================ */
footer {
  text-align: center;
  padding: var(--space-10) var(--space-4);
  margin-top: var(--space-12);
  color: var(--color-gray-500);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

footer p {
  opacity: 0.8;
  font-weight: 500;
}

/* ============================================
   12. 响应式设计 - 4个断点
   ============================================ */

/* 大屏幕 (>1400px) */
@media (min-width: 1400px) {
  .container {
    max-width: 1200px;
  }

  .subscribe-section h1 {
    font-size: var(--text-7xl); /* 72px */
  }
}

/* 平板设备 (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 768px) {
  .container {
    max-width: 720px;
    padding: var(--space-6) var(--space-4);
  }

  .subscribe-section {
    padding: var(--space-8);
  }

  .subscribe-section h1 {
    font-size: var(--text-5xl);
  }

  .subtitle {
    font-size: var(--text-lg);
  }

  .post-card {
    padding: var(--space-5);
  }

  .post-content {
    font-size: var(--text-lg);
  }
}

/* 移动设备 (<768px) */
@media (max-width: 767px) {
  :root {
    /* 移动端微调间距 */
    --space-8: 56px;
    --space-10: 64px;
    --space-12: 80px;
  }

  .container {
    padding: var(--space-6) var(--space-3);
  }

  /* 🌐 2025设计 - 移动端语言选择器优化 */
  .language-selector {
    /* 保持绝对定位 */
    position: absolute;
    top: 16px;
    right: 16px;
    gap: 6px;
  }

  .language-icon {
    font-size: var(--text-xs);
  }

  .language-selector select {
    font-size: 13px;  /* 13px 移动端 */
    min-width: 100px;
    padding: 5px 24px 5px 8px;
  }

  .subscribe-section {
    /* 移动端优化间距 - 顶部留空给语言选择器 */
    padding: 52px var(--space-2) var(--space-4);  /* 52px(顶部) 16px 32px */
    margin-bottom: var(--space-6);
    border-radius: var(--radius-xl);
  }

  .subscribe-section h1 {
    font-size: 1.25rem;  /* 20px - 移动端进一步缩小 */
    line-height: 1.3;
    margin-bottom: var(--space-3);
  }

  .subtitle {
    font-size: var(--text-base);
    margin-bottom: var(--space-6);
  }

  /* 表单垂直布局 */
  #subscribe-form {
    flex-direction: column;
    gap: var(--space-3);
    max-width: 100%;
  }

  #email-input,
  #subscribe-btn {
    width: 100%;
    padding: var(--space-3) var(--space-4);
  }

  /* 登录头部 - 移动端紧凑优化 */
  .logged-in-compact {
    padding: var(--space-3) var(--space-4);  /* 24px 32px */
  }

  .welcome-compact {
    font-size: 16px;  /* 移动端进一步缩小 */
  }

  .email-compact {
    font-size: 13px;  /* 移动端进一步缩小 */
  }

  .status-card-compact {
    padding: 12px var(--space-2);  /* 进一步紧凑 */
  }

  .status-row {
    padding: 6px 0;  /* 从8px缩小 */
    font-size: 12px;
  }

  .button-group-compact {
    flex-direction: column;
    width: 100%;
    gap: var(--space-2);  /* 8px */
  }

  .btn-primary-compact,
  .btn-ghost-compact {
    width: 100%;
    justify-content: center;
    padding: 10px 20px;  /* 移动端进一步缩小 */
  }

  /* 帖子区域 */
  .posts-section h2 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-6);
  }

  .post-card {
    padding: var(--space-4);
  }

  /* Header 移动端优化 */
  .post-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .post-author-info {
    width: 100%;
    gap: var(--space-2);
  }

  .post-avatar {
    width: 40px;
    height: 40px;
    border-width: 2px;
  }

  .post-author-name {
    font-size: var(--text-base);
  }

  .post-author-handle {
    font-size: var(--text-xs);
  }

  .post-date {
    align-self: flex-start;
    font-size: var(--text-xs);
  }

  .post-text {
    font-size: var(--text-lg);
  }

  /* 卡片悬停效果减弱（触摸屏） */
  .post-card:hover {
    transform: translateY(-2px);
  }

  /* 页脚 */
  footer {
    padding: var(--space-8) var(--space-3);
    margin-top: var(--space-10);
  }
}

/* 超小屏幕 (<375px) */
@media (max-width: 374px) {
  .subscribe-section h1 {
    font-size: var(--text-3xl);
  }

  .subtitle {
    font-size: var(--text-sm);
  }

  .post-content {
    font-size: var(--text-base);
  }
}

/* ============================================
   13. 焦点可访问性
   ============================================ */
*:focus-visible {
  outline: 3px solid rgba(6, 182, 212, 0.5);
  outline-offset: 3px;
}

/* 隐藏默认焦点，仅在键盘导航时显示 */
*:focus:not(:focus-visible) {
  outline: none;
}

/* ============================================
   14. 深色模式支持（可选）
   ============================================ */
@media (prefers-color-scheme: dark) {
  :root {
    --color-background-start: #2d2a24;
    --color-background-end: #1c1917;
    --color-surface: rgba(68, 64, 60, 0.7);
    --color-surface-border: rgba(168, 162, 158, 0.2);
  }

  body {
    color: var(--color-gray-200);
  }

  .subscribe-section h1,
  .posts-section h2 {
    background: linear-gradient(135deg,
      var(--color-gray-100) 0%,
      var(--color-primary-light) 25%,
      var(--color-blue) 50%,
      var(--color-purple-light) 75%,
      var(--color-accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .subtitle {
    color: var(--color-gray-400);
  }

  .post-content {
    color: var(--color-gray-200);
  }

  #email-input {
    color: var(--color-gray-100);
    background: rgba(68, 64, 60, 0.8);
    border-color: var(--color-gray-600);
  }

  #email-input:focus {
    background: rgba(68, 64, 60, 1);
  }
}

/* ============================================
   15. 打印样式优化
   ============================================ */
@media print {
  body {
    background: white;
    color: black;
  }

  .subscribe-section,
  .post-card {
    background: white;
    border: 1px solid var(--color-gray-300);
    box-shadow: none;
  }

  .subscribe-section h1,
  .posts-section h2,
  .post-content {
    color: black;
  }

  .post-link {
    color: var(--color-primary);
    text-decoration: underline;
    background: none;
  }
}

/* ============================================
   16. 翻译相关样式
   ============================================ */
/* 内容总结区域 */
.post-summary {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border-left: 4px solid #f59e0b;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2);
}

.post-summary-label {
  font-size: var(--text-xs);
  color: #92400e;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.post-summary-text {
  font-size: var(--text-sm);
  color: #78350f;
  line-height: var(--leading-relaxed);
  font-weight: 500;
}

/* 翻译内容 */
.translated-content {
  font-size: var(--text-xl);
  line-height: var(--leading-extra);
  color: var(--color-gray-900);
  margin-bottom: var(--space-2);
}

/* 原文折叠区域 */
.original-toggle-btn {
  background: none;
  border: none;
  color: var(--color-gray-600);
  font-size: var(--text-sm);
  cursor: pointer;
  padding: var(--space-1) 0;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--duration-fast);
}

.original-toggle-btn:hover {
  color: var(--color-primary);
}

.original-content-section {
  background: var(--color-gray-50);
  border-left: 3px solid var(--color-gray-300);
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  margin-top: var(--space-2);
}

.original-content-section.collapsed {
  display: none;
}

.original-label {
  font-size: var(--text-xs);
  color: var(--color-gray-600);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: var(--space-1);
}

.original-text {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-gray-700);
}

/* ============================================
   17. 免责声明和 Logo 样式
   ============================================ */
.disclaimer {
  font-size: 0.75rem;
  color: #6b7280;
  line-height: 1.5;
  margin-top: 0.5rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   18. 加载更多按钮
   ============================================ */

/* 加载更多容器 */
.load-more-container {
  display: flex;
  justify-content: center;
  padding: 2rem 1rem;
  margin-top: 1rem;
}

/* 加载更多按钮 - 使用设计系统变量 */
.load-more-btn {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3);
  min-width: 150px;
}

.load-more-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

.load-more-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.load-more-spinner {
  display: inline-block;
  margin-left: 0.5rem;
}

/* 隐藏加载更多容器（当没有更多内容时） */
.load-more-container.hidden {
  display: none;
}

/* ============================================
   19. 性能优化
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}


/* ============================================
   20. ES模块重构新增样式
   ============================================ */

/* 双时间显示样式 */
.time-primary {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.time-secondary {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  margin-top: 2px;
}

/* 详细分析链接样式 */
.post-summary-link {
  display: inline-block;
  margin-top: 8px;
  color: #2563eb;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  opacity: 0.6;
  transition: opacity 0.2s;
}

.post-summary-link:hover {
  opacity: 0.8;
}

/* 响应式优化 */
@media (max-width: 768px) {
  .time-primary {
    font-size: 0.85rem;
  }

  .time-secondary {
    font-size: 0.75rem;
  }
}

/* ============================================
   Modal - 深度分析订阅引导
   ============================================ */

/* Backdrop遮罩层 */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);

  /* 动画性能优化 */
  will-change: opacity;
  animation: fadeIn var(--duration-normal) var(--ease-smooth);
}

/* Backdrop淡出动画 */
.modal-backdrop.closing {
  animation: fadeOut var(--duration-normal) var(--ease-smooth);
}

/* Modal容器 */
.analysis-modal {
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  backdrop-filter: var(--blur-glass);
  border: 1px solid var(--color-primary);
  max-width: 540px;
  width: 100%;
  padding: var(--space-8);
  position: relative;
  outline: none; /* 移除默认focus outline */

  /* 霓虹边框渐变 */
  background-image: linear-gradient(
    135deg,
    rgba(6, 182, 212, 0.05) 0%,
    rgba(236, 72, 153, 0.05) 50%,
    rgba(168, 85, 247, 0.05) 100%
  );

  /* 动画性能优化 */
  will-change: opacity, transform;
  animation: modalSlideIn var(--duration-normal) var(--ease-smooth);
}

/* 关闭按钮 */
.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: transparent;
  border: none;
  font-size: 24px;
  color: var(--color-gray-600);
  cursor: pointer;
  opacity: 0.6;
  transition: opacity var(--duration-fast) var(--ease-smooth);
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.modal-close:hover {
  opacity: 1;
}

/* 标题 */
.modal-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-gray-700);
  margin: 0 0 var(--space-4) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 描述文字 */
.modal-description {
  color: var(--color-gray-600);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

/* 特性列表 */
.modal-features {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-6) 0;
}

.modal-features li {
  padding-left: var(--space-6);
  margin-bottom: var(--space-2);
  position: relative;
  color: var(--color-gray-600);
  line-height: 1.6;
}

.modal-features li::before {
  content: '•';
  position: absolute;
  left: var(--space-3);
  color: var(--color-primary);
  font-weight: bold;
}

/* AI模型介绍 */
.modal-ai-intro {
  color: var(--color-gray-600);
  margin-bottom: var(--space-3);
  font-weight: 500;
  line-height: 1.6;
}

/* AI模型图标容器 */
.modal-ai-models {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-bottom: var(--space-4);
}

/* 单个模型图标 */
.ai-model-logo {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  flex-shrink: 0;
}

/* GPT - OpenAI 绿色渐变 */
.ai-model-logo[data-logo="gpt-5-pro"] {
  background: linear-gradient(135deg, #10A37F 0%, #1AC9A0 100%);
  border: 1px solid rgba(16, 163, 127, 0.3);
}

/* Claude - Anthropic 橙色渐变 */
.ai-model-logo[data-logo="claude"] {
  background: linear-gradient(135deg, #FF6B35 0%, #FF8C5A 100%);
  border: 1px solid rgba(255, 107, 53, 0.3);
}

/* Deepseek - 蓝色渐变 */
.ai-model-logo[data-logo="deepseek"] {
  background: linear-gradient(135deg, #4A90E2 0%, #6BA5FF 100%);
  border: 1px solid rgba(74, 144, 226, 0.3);
}

/* Gemini - Google 蓝色渐变 */
.ai-model-logo[data-logo="gemini"] {
  background: linear-gradient(135deg, #4285F4 0%, #669DF6 100%);
  border: 1px solid rgba(66, 133, 244, 0.3);
}

/* Qwen - 青绿渐变 */
.ai-model-logo[data-logo="qwen"] {
  background: linear-gradient(135deg, #00B894 0%, #00D2A0 100%);
  border: 1px solid rgba(0, 184, 148, 0.3);
}

/* Grok - xAI 黑色渐变 */
.ai-model-logo[data-logo="grok"] {
  background: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.ai-model-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* 订阅按钮 */
.modal-subscribe-btn {
  width: 100%;
  padding: 14px 28px;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 16px;
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  box-shadow: var(--shadow-xl);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-smooth);
}

.modal-subscribe-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2xl);
}

/* 动画定义 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* 响应式设计 */
@media (max-width: 640px) {
  .analysis-modal {
    padding: var(--space-6);
    max-width: 100%;
    margin: var(--space-4);
  }

  .modal-title {
    font-size: 20px;
  }

  .modal-ai-models {
    justify-content: center;
    gap: 14px;
  }

  .ai-model-logo {
    width: 42px;
    height: 42px;
    padding: 8px;
  }
}

/* ========================================
   Analysis Page Styles
   ======================================== */

.analysis-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 0;
}

.analysis-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 2px solid #e5e7eb;
}

.btn-back {
  display: inline-block;
  color: #6b7280;
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 16px;
  transition: color 0.2s;
}

.btn-back:hover {
  color: #111827;
}

.analysis-meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
}

.analysis-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.analysis-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid #e5e7eb;
}

.analysis-author-name {
  font-weight: 600;
  font-size: 18px;
  color: #111827;
}

.analysis-author-handle {
  color: #6b7280;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

.analysis-author-handle:hover {
  color: #2563eb;
}

.analysis-date {
  text-align: right;
}

.analysis-date .time-primary {
  font-size: 14px;
  color: #374151;
  font-weight: 500;
}

.analysis-date .time-secondary {
  font-size: 12px;
  color: #9ca3af;
  margin-top: 4px;
}

.analysis-section {
  margin-bottom: 32px;
}

.analysis-section h2 {
  font-size: 18px;
  color: #374151;
  margin-bottom: 16px;
  font-weight: 600;
}

.analysis-summary {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  padding: 24px;
  border-radius: 12px;
}

.analysis-summary h2 {
  color: #92400e;
}

.analysis-summary p {
  color: #78350f;
  line-height: 1.8;
  margin: 0;
}

.content-box {
  background: #f9fafb;
  padding: 24px;
  border-radius: 12px;
  border-left: 4px solid #3b82f6;
  line-height: 1.8;
  white-space: pre-wrap;
  word-wrap: break-word;
  color: #374151;
}

.error-message {
  text-align: center;
  padding: 60px 24px;
}

.error-message h2 {
  color: #991b1b;
  margin-bottom: 16px;
  font-size: 24px;
}

.error-message p {
  color: #7f1d1d;
  margin-bottom: 32px;
}

.error-message .btn-back {
  display: inline-block;
  padding: 12px 32px;
  background: #dc2626;
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 500;
  transition: background 0.2s;
}

.error-message .btn-back:hover {
  background: #b91c1c;
}

@media (max-width: 640px) {
  .analysis-meta {
    flex-direction: column;
  }

  .analysis-date {
    text-align: left;
  }

  .content-box {
    padding: 16px;
  }
}
/* ============================================
   Login Page Styles
   ============================================ */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background: linear-gradient(135deg, var(--color-background-start), var(--color-background-end));
}

.login-card {
  width: 100%;
  max-width: 480px;
  background: var(--color-surface);
  backdrop-filter: var(--blur-glass);
  border: 1px solid var(--color-surface-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-xl);
}

.login-card h1 {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-gray-900);
  margin: 0 0 var(--space-2) 0;
  text-align: center;
}

.login-card .subtitle {
  font-size: var(--text-base);
  color: var(--color-gray-600);
  margin: 0 0 var(--space-6) 0;
  text-align: center;
}

.login-step {
  display: none;
}

.login-step.active {
  display: block;
  animation: fadeIn 0.3s ease-in-out;
}

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

.login-card form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.login-card input[type="email"],
.login-card input[type="text"] {
  width: 100%;
  padding: var(--space-3);
  font-size: var(--text-lg);
  border: 1px solid var(--color-surface-border);
  border-radius: var(--radius-lg);
  background: white;
  transition: all 0.2s ease;
}

.login-card input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

.login-card .btn-primary {
  width: 100%;
  padding: var(--space-3);
  font-size: var(--text-lg);
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.2s ease;
}

.login-card .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--glow-cyan);
}

.login-card .btn-primary:active {
  transform: translateY(0);
}

.login-card .btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.login-card .hint {
  font-size: var(--text-sm);
  color: var(--color-gray-600);
  text-align: center;
}

.login-card .hint a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

.login-card .hint a:hover {
  text-decoration: underline;
}

.login-card .info {
  font-size: var(--text-base);
  color: var(--color-gray-700);
  text-align: center;
  margin-bottom: var(--space-4);
  padding: var(--space-3);
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
}

.login-card .info strong {
  color: var(--color-primary);
}

.error-banner {
  padding: var(--space-3);
  margin-top: var(--space-4);
  background: var(--color-error-bg);
  color: var(--color-error-text);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  text-align: center;
  animation: shake 0.3s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

/* ============================================
   User Config Page - 2025 Premium Design
   Apple-level glassmorphism + Modern UX + Subscription Features
   ============================================ */

/* Main Container */
.config-container-2025 {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
  min-height: 100vh;
}

/* Breadcrumb Navigation */
.breadcrumb-nav {
  margin-bottom: var(--space-6);
  animation: slideInFromLeft 0.3s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.breadcrumb-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.breadcrumb-link:hover {
  background: rgba(6, 182, 212, 0.1);
  transform: translateX(-4px);
}

.breadcrumb-arrow {
  width: 16px;
  height: 16px;
  transition: transform 0.2s;
}

.breadcrumb-link:hover .breadcrumb-arrow {
  transform: translateX(-2px);
}

/* 紧凑用户信息卡片 */
.user-info-card-compact {
  backdrop-filter: blur(40px) saturate(180%);
  -webkit-backdrop-filter: blur(40px) saturate(180%);
  background: linear-gradient(
    135deg,
    rgba(255, 252, 247, 0.92) 0%,
    rgba(255, 252, 247, 0.85) 100%
  );

  @supports not (backdrop-filter: blur(40px)) {
    background: rgba(255, 252, 247, 0.98);
  }

  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: var(--radius-2xl);
  padding: var(--space-4) var(--space-6);  /* 32px 48px（从64px缩小） */
  margin-bottom: var(--space-6);

  box-shadow:
    0 0 0 1px rgba(6, 182, 212, 0.1) inset,
    0 16px 32px rgba(107, 114, 128, 0.12);

  text-align: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  animation: fadeIn 0.3s ease both;
}

.user-info-card-compact:hover {
  transform: translateY(-2px);
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow:
    0 0 0 1px rgba(6, 182, 212, 0.15) inset,
    0 20px 40px rgba(107, 114, 128, 0.15);
}

/* 仅显示邮箱（无名字，无Avatar） */
.config-email-only {
  font-size: 16px;
  color: var(--color-gray-700);
  font-weight: 600;  /* 提升权重作为唯一标识 */
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
  margin: 0 0 var(--space-3) 0;  /* 24px margin */
}

/* 退出登录按钮 */
.config-logout-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 12px var(--space-4);  /* 紧凑padding */

  background: transparent;
  color: var(--color-gray-600);
  border: 1px solid rgba(107, 114, 128, 0.2);
  border-radius: var(--radius-lg);

  font-size: var(--text-sm);
  font-weight: 600;
  font-family: var(--font-sans);

  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.config-logout-btn:hover {
  background: rgba(107, 114, 128, 0.08);
  color: var(--color-gray-800);
  border-color: rgba(107, 114, 128, 0.3);
  transform: translateY(-1px);
}

.config-logout-btn:active {
  transform: translateY(0);
}

.logout-icon {
  width: 16px;  /* 从18px缩小 */
  height: 16px;
}

/* Preferences Section */
.preferences-section-2025 {
  backdrop-filter: blur(40px) saturate(180%);
  -webkit-backdrop-filter: blur(40px) saturate(180%);
  background: linear-gradient(
    135deg,
    rgba(255, 252, 247, 0.92) 0%,
    rgba(255, 252, 247, 0.85) 100%
  );

  @supports not (backdrop-filter: blur(40px)) {
    background: rgba(255, 252, 247, 0.98);
  }

  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  margin-bottom: var(--space-6);

  box-shadow:
    0 0 0 1px rgba(6, 182, 212, 0.1) inset,
    0 32px 64px rgba(107, 114, 128, 0.18),
    0 0 40px rgba(6, 182, 212, 0.08);

  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  animation: slideInFromBottom 0.4s cubic-bezier(0.4, 0, 0.2, 1) 0.3s both;
}

.preferences-section-2025:hover {
  transform: translateY(-2px);
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow:
    0 0 0 1px rgba(6, 182, 212, 0.15) inset,
    0 36px 72px rgba(107, 114, 128, 0.2),
    0 0 50px rgba(6, 182, 212, 0.1);
}

.section-header {
  margin-bottom: var(--space-6);
}

.section-title-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.section-icon {
  font-size: 24px;
}

.section-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-gray-900);
  letter-spacing: -0.02em;
  margin: 0;
}

.section-subtitle {
  font-size: var(--text-sm);
  color: var(--color-gray-600);
  margin: 0;
  padding-left: 34px;
}

/* Subscription Badge */
.subscription-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 700;
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.subscription-badge.status-trial {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: white;
  box-shadow: 0 4px 12px rgba(251, 191, 36, 0.3);
}

.subscription-badge.status-active {
  background: linear-gradient(135deg, var(--color-success), #059669);
  color: white;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.subscription-badge.status-expired {
  background: linear-gradient(135deg, var(--color-error), #dc2626);
  color: white;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* Subscription Info */
.subscription-info {
  font-size: var(--text-sm);
  color: var(--color-gray-700);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

/* Upgrade Buttons Group */
.upgrade-buttons-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.upgrade-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-4) var(--space-5);
  background: linear-gradient(135deg,
    var(--color-primary) 0%,
    var(--color-blue) 100%);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.upgrade-btn:hover {
  transform: translateY(-2px);
  box-shadow:
    0 8px 20px rgba(6, 182, 212, 0.35),
    0 0 30px rgba(6, 182, 212, 0.2);
}

.upgrade-btn.featured {
  background: linear-gradient(135deg,
    var(--color-purple) 0%,
    var(--color-accent) 100%);
}

.upgrade-btn.featured:hover {
  box-shadow:
    0 8px 20px rgba(168, 85, 247, 0.35),
    0 0 30px rgba(168, 85, 247, 0.2);
}

.upgrade-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(255, 255, 255, 0.3);
  color: white;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.upgrade-tier {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-1);
}

.upgrade-price {
  font-size: var(--text-base);
  font-weight: 600;
  opacity: 0.9;
}

/* Billing Portal Link */
.billing-portal-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.billing-portal-link:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(6, 182, 212, 0.3);
}

.portal-arrow {
  width: 18px;
  height: 18px;
  transition: transform 0.2s;
}

.billing-portal-link:hover .portal-arrow {
  transform: translateX(4px);
}

/* Language Selector */
.locale-selector {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-gray-800);
  background: rgba(255, 255, 255, 0.8);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: var(--font-sans);
}

.locale-selector:hover {
  border-color: var(--color-primary);
  background: white;
}

.locale-selector:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.15);
  background: white;
}

/* Radio Cards (shared with CN) */
.radio-cards-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.radio-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  border: 2px solid rgba(107, 114, 128, 0.15);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.radio-card:hover {
  transform: translateY(-2px);
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow: 0 8px 16px rgba(107, 114, 128, 0.12);
}

.radio-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.radio-input:checked + .radio-card-indicator .radio-circle {
  border-color: var(--color-primary);
  background: var(--color-primary);
}

.radio-input:checked + .radio-card-indicator .radio-checkmark {
  opacity: 1;
  transform: scale(1);
}

.radio-input:checked ~ .radio-card-content .radio-card-title {
  color: var(--color-primary);
}

.radio-card-indicator {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  position: relative;
  margin-top: 2px;
}

.radio-circle {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-gray-300);
  border-radius: 50%;
  background: white;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.radio-checkmark {
  position: absolute;
  top: 0;
  left: 0;
  width: 24px;
  height: 24px;
  color: white;
  opacity: 0;
  transform: scale(0.5);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.radio-card-content {
  flex: 1;
}

.radio-card-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-gray-900);
  margin: 0 0 var(--space-1) 0;
  letter-spacing: -0.01em;
  transition: color 0.2s;
}

.radio-card-description {
  font-size: var(--text-sm);
  color: var(--color-gray-600);
  line-height: 1.5;
  margin: 0;
}

/* Save Changes Button */
.save-changes-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: linear-gradient(135deg,
    var(--color-primary) 0%,
    var(--color-blue) 50%,
    var(--color-accent) 100%);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-family: var(--font-sans);
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.25);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.save-changes-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    rgba(255, 255, 255, 0.1),
    transparent);
  opacity: 0;
  transition: opacity 0.2s;
}

.save-changes-btn:hover {
  transform: translateY(-2px);
  box-shadow:
    0 8px 20px rgba(6, 182, 212, 0.35),
    0 0 30px rgba(6, 182, 212, 0.2);
}

.save-changes-btn:hover::before {
  opacity: 1;
}

.save-changes-btn:hover .save-arrow {
  transform: translateX(4px);
}

.save-changes-btn:active {
  transform: translateY(0);
}

.save-changes-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.save-arrow {
  width: 18px;
  height: 18px;
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Config Hint */
.config-hint {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  color: var(--color-gray-700);
  animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1) 0.5s both;
}

.hint-icon {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* Toast Notifications - 2025 Design Standards */
#toast-container {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 500px;
  width: auto;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  min-height: 56px;
  pointer-events: auto;

  /* Apple-level glass morphism */
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: rgba(255, 255, 255, 0.95);

  /* Vercel-level shadows */
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.08),
    0 2px 8px rgba(0, 0, 0, 0.04);

  /* Linear-level precision */
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 12px;

  /* Initial state (hidden) */
  opacity: 0;
  transform: translateY(-100%);
  transition: all 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* Toast show animation - Apple cubic-bezier */
.toast-show {
  opacity: 1;
  transform: translateY(0);
}

/* Toast hide animation */
.toast-hide {
  opacity: 0;
  transform: translateY(-20px);
  transition: all 300ms cubic-bezier(0.4, 0, 1, 1);
}

/* Success variant */
.toast-success {
  border-left: 4px solid var(--color-success);
  background: rgba(236, 253, 245, 0.95);
}

/* Error variant */
.toast-error {
  border-left: 4px solid var(--color-error);
  background: rgba(254, 242, 242, 0.95);
}

/* Info variant */
.toast-info {
  border-left: 4px solid #3b82f6;
  background: rgba(239, 246, 255, 0.95);
}

/* Toast icon */
.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toast-success .toast-icon {
  color: var(--color-success);
}

.toast-error .toast-icon {
  color: var(--color-error);
}

.toast-info .toast-icon {
  color: #3b82f6;
}

/* Toast message */
.toast-message {
  flex: 1;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-gray-900);
  font-weight: 500;
  letter-spacing: -0.01em;
}

/* Toast close button - Notion-level comfort */
.toast-close {
  width: 24px;
  height: 24px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--color-gray-500);
  cursor: pointer;
  border-radius: 6px;
  font-size: 20px;
  line-height: 1;
  flex-shrink: 0;
  transition: all 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

.toast-close:hover {
  background: rgba(0, 0, 0, 0.06);
  color: var(--color-gray-900);
}

.toast-close:active {
  background: rgba(0, 0, 0, 0.1);
  transform: scale(0.95);
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  z-index: 9999;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(6, 182, 212, 0.2);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-text {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-gray-700);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .config-container-2025 {
    padding: var(--space-6) var(--space-4);
  }

  .user-info-card-compact,
  .preferences-section-2025 {
    padding: var(--space-3) var(--space-4);  /* 24px 32px */
  }

  .config-email-only {
    font-size: 14px;  /* 移动端缩小 */
  }

  .section-title {
    font-size: var(--text-xl);
  }

  .radio-card {
    padding: var(--space-3) var(--space-4);
  }

  .radio-card-title {
    font-size: var(--text-base);
  }

  .radio-card-description {
    font-size: var(--text-xs);
  }

  .save-changes-btn {
    width: 100%;
    justify-content: center;
  }

  #toast-container {
    left: var(--space-4);
    right: var(--space-4);
    top: var(--space-4);
    max-width: calc(100% - 2 * var(--space-4));
    transform: none;
  }

  .toast {
    padding: 14px 20px;
    min-height: 52px;
  }

  .toast-message {
    font-size: 13px;
  }

  .config-logout-btn {
    width: 100%;
    justify-content: center;
  }

  .upgrade-buttons-group {
    grid-template-columns: 1fr;
  }

  .billing-portal-link {
    width: 100%;
    justify-content: center;
  }
}

/* Tablet Responsive */
@media (max-width: 1024px) and (min-width: 769px) {
  .config-container-2025 {
    padding: var(--space-8) var(--space-5);
  }
}
.success-banner {
  padding: var(--space-3);
  margin-top: var(--space-4);
  background: var(--color-success-bg);
  color: var(--color-success-text);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  text-align: center;
}

/* ============================================================================
   Impact Analysis Styles
   ============================================================================ */

/* Impact analysis section */
.impact-analysis {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border-left: 4px solid #3b82f6;
}

.impact-analysis h2 {
  color: #1e3a8a;
  margin-bottom: var(--space-4);
}

.impact-analysis-empty {
  background: #fef3c7;
  border-left: 4px solid #f59e0b;
}

.empty-message {
  color: #92400e;
  font-style: italic;
  margin: 0;
}

/* Impact item */
.impact-item {
  margin: var(--space-4) 0;
  padding: var(--space-3);
  background: white;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.impact-item h3 {
  font-size: 1rem;
  color: #475569;
  margin: 0 0 var(--space-2) 0;
  font-weight: 600;
}

.impact-item p {
  margin: var(--space-2) 0;
  color: #334155;
  line-height: 1.6;
}

/* Market impact specific styles */
.market-impact {
  border-left: 3px solid #cbd5e1;
}

.affected-list {
  color: #475569;
  font-weight: 500;
}

.affected-list strong {
  color: #1e293b;
}

/* Impact direction indicators */
.direction {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  margin: var(--space-2) 0;
}

.direction-positive {
  background-color: #d1fae5;
  color: #065f46;
  border: 1px solid #6ee7b7;
}

.direction-negative {
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}

.direction-neutral {
  background-color: #f1f5f9;
  color: #475569;
  border: 1px solid #cbd5e1;
}

.direction-mixed {
  background-color: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
}

.no-impact {
  color: #94a3b8;
  font-style: italic;
  margin: var(--space-2) 0;
}

.reasoning {
  color: #64748b;
  font-style: italic;
  font-size: 0.95rem;
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px dashed #e2e8f0;
}

/* Truth Social 原文链接样式 - 轻微强调 */
.truth-social-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-2);
  margin-bottom: var(--space-2);
  padding: 8px 12px;
  background: rgba(59, 130, 246, 0.04);
  border-radius: 6px;
  color: #2563eb;
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all 0.2s ease;
  cursor: pointer;
}

.truth-social-link:hover {
  background: rgba(59, 130, 246, 0.08);
  color: #1d4ed8;
  transform: translateX(2px);
}

.truth-social-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.85;
}

.truth-social-link:hover .truth-social-icon {
  opacity: 1;
}

.external-link-arrow {
  margin-left: 2px;
  font-size: var(--text-xs);
  opacity: 0.6;
  transition: opacity 0.2s ease;
}

.truth-social-link:hover .external-link-arrow {
  opacity: 0.9;
}