/* --- CSS Variables (Color & Font Palette) --- */
:root {
    --theme-bg: #F5F5F0; /* 米白背景，营造静谧氛围 */
    --theme-text: #4A3F35; /* 深沉典雅的文字色 */
    --theme-card: rgba(255, 255, 255, 0.7);
    --theme-accent: #B8860B; /* 低饱和度的金色，用于强调元素 */
    --theme-secondary: #A1887F; /* 柔和的辅助文字色 */
    --font-zh: 'Noto Serif SC', serif;
    --font-en: 'Georgia', serif;
    --transition-speed: 0.5s;
  }
  
  /* --- Global Styles --- */
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  html[lang="zh"] body {
    font-family: var(--font-zh);
  }
  
  html[lang="en"] body {
    font-family: var(--font-en);
  }
  
  body {
    background-color: var(--theme-bg);
    color: var(--theme-text);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
    overflow-x: hidden;
    background-image: url('https://www.transparenttextures.com/patterns/rice-paper-2.png'); /* 添加一些纹理 */
  }
  
  /* --- Header & Language Switcher --- */
  .app-header {
    position: absolute;
    top: 2rem;
    right: 2rem;
    z-index: 10;
  }
  
  .language-switcher a {
    text-decoration: none;
    color: var(--theme-secondary);
    font-size: 1rem;
    transition: color var(--transition-speed) ease;
  }
  
  .language-switcher a.active,
  .language-switcher a:hover {
    color: var(--theme-accent);
    font-weight: bold;
  }
  
  .language-switcher span {
    color: var(--theme-secondary);
    margin: 0 0.25rem;
  }
  
  /* --- Main Layout --- */
  .main-container {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 2rem;
    width: 100%;
    max-width: 800px; /* 调整为单列布局更专注 */
    flex-grow: 1;
    align-items: center;
  }
  
  /* --- Card Styles --- */
  .card {
    padding: 3rem;
    width: 100%;
    background-color: var(--theme-card);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
    transition: opacity var(--transition-speed) ease, transform var(--transition-speed) ease;
  }
  
  .result-card {
    text-align: center;
  }
  
  /* --- Card Content & Typography --- */
  .card-title {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--theme-text);
    text-align: center;
    margin-bottom: 0.5rem;
  }
  
  .card-subtitle {
    font-size: 1.1rem;
    color: var(--theme-secondary);
    text-align: center;
    margin-bottom: 2.5rem;
  }
  
  .result-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--theme-accent);
      margin-bottom: 2rem;
  }
  
  /* --- Form Elements --- */
  .form-group {
    margin-bottom: 1.5rem;
    text-align: left;
  }
  
  .form-group label {
    display: block;
    margin-bottom: 0.75rem;
    color: var(--theme-secondary);
  }
  
  .form-group input, .form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    background-color: #FFFFFF;
    border: 1px solid #DCD1C6;
    border-radius: 6px;
    color: var(--theme-text);
    font-family: inherit;
    transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  }
  
  .form-group textarea {
      resize: vertical;
  }
  
  .number-inputs {
      display: flex;
      gap: 1rem;
  }
  
  .number-inputs input {
      text-align: center;
  }
  
  .form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--theme-accent);
    box-shadow: 0 0 0 3px rgba(184, 134, 11, 0.2);
  }
  
  .submit-btn {
    width: 100%;
    padding: 0.85rem 1rem;
    font-size: 1.1rem;
    font-weight: bold;
    color: #FFFFFF;
    background-color: var(--theme-accent);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color var(--transition-speed) ease, transform 0.2s ease;
    margin-top: 1rem;
  }
  
  .submit-btn:hover {
    background-color: #ca9a2a;
    transform: translateY(-2px);
  }
  
  /* --- Result Sections --- */
  .reading-section {
      margin-bottom: 2.5rem;
      text-align: left;
      border-left: 3px solid var(--theme-accent);
      padding-left: 1.5rem;
  }
  
  .reading-section h3 {
      font-size: 1.25rem;
      margin-bottom: 0.75rem;
      color: var(--theme-text);
  }
  
  .reading-section p {
      font-size: 1rem;
      line-height: 1.8;
      color: var(--theme-secondary);
  }
  
  .paywall {
      margin-top: 3rem;
      padding: 2rem;
      background-color: rgba(0,0,0,0.02);
      border-radius: 8px;
      text-align: center;
  }
  
  .paywall p {
      margin-bottom: 1rem;
      font-size: 1.1rem;
      color: var(--theme-text);
  }
  
  .visualization-placeholder {
      width: 100%;
      height: 150px;
      background-color: rgba(0,0,0,0.05);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-top: 1rem;
      color: var(--theme-secondary);
      font-style: italic;
  }
  
  
  /* --- Action Buttons --- */
  .card-actions {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .action-link {
    text-decoration: none;
    background: transparent;
    border: 1px solid var(--theme-secondary);
    border-radius: 6px;
    padding: 0.5rem 1.5rem;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--theme-secondary);
    transition: all var(--transition-speed) ease;
  }
  
  .action-link:hover {
    color: var(--theme-accent);
    border-color: var(--theme-accent);
    background-color: var(--theme-bg);
  }
  
  
  /* --- Animation & State Classes --- */
  .hidden {
    display: none !important;
  }
  
  .visible {
    display: block;
    opacity: 1;
    transform: translateY(0);
  }
  
  /* --- Footer --- */
  .info-section {
    width: 100%;
    max-width: 1280px;
    padding: 2rem 1rem;
    margin-top: 4rem;
    border-top: 1px solid #e0d9d1;
  }
  
  .info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
  }
  
  .info-column {
    text-align: center;
  }
  
  .info-column h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--theme-text);
    margin-bottom: 1rem;
  }
  
  .info-column p {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--theme-secondary);
  }
  
  /* --- Responsive Design --- */
  @media (max-width: 1024px) {
    .info-grid {
      grid-template-columns: 1fr;
      gap: 2rem;
    }
  }
  
  @media (max-width: 768px) {
    body {
      padding: 1rem;
    }
    .app-header {
        top: 1rem;
        right: 1rem;
    }
    .main-container {
        margin-top: 4rem;
    }
    .card {
        padding: 1.5rem;
    }
    .card-title {
        font-size: 2.2rem;
    }
    .number-inputs {
        flex-direction: column;
    }
    .info-section {
        margin-top: 2rem;
    }
  }


  /* 【新增】确保头部品牌链接颜色不受访问状态影响 */
.home-header .brand-link,
.home-header .brand-link:link,
.home-header .brand-link:visited {
    color: var(--theme-text); /* 强制使用我们在style.css中定义的主文字色 */
    text-decoration: none; /* 同时确保没有下划线 */
}

/* --- 添加到现有CSS文件中 --- */

/* 优化Paywall区块样式 */
.paywall {
  margin-top: 3rem;
  padding: 2rem;
  border-radius: 8px;
  text-align: center;
  border: 1px solid rgba(184, 134, 11, 0.1); /* 保留细边框 */
  box-shadow: none; /* 去掉阴影 */
}

.paywall p {
  margin-bottom: 1.5rem; /* 增加标题下方间距 */
  font-size: 1.2rem;
  color: var(--theme-text);
  font-weight: 600;
  line-height: 1.5;
}

/* 优化福利列表样式 */
.benefits-list {
  margin: 1.5rem 0;
  padding-left: 0;
  list-style: none;
  text-align: left;
}

.benefits-list li {
  margin-bottom: 1rem; /* 增加列表项间距 */
  padding-left: 2rem; /* 为图标留出空间 */
  position: relative;
  line-height: 1.6; /* 调整行高 */
  color: var(--theme-secondary);
}

.benefits-list i {
  position: absolute;
  left: 0;
  top: 0.2em;
  color: var(--theme-accent);
  width: 1.5rem;
  text-align: center;
}

.benefits-list strong {
  color: var(--theme-text);
  font-weight: 600;
}

/* 解锁按钮优化 */
#unlock-btn {
  margin-top: 2rem;
  padding: 1rem;
  font-size: 1.1rem;
  background-color: var(--theme-accent);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
  width: 100%;
  font-weight: bold;
  letter-spacing: 0.5px;
}

#unlock-btn:hover {
  background-color: #ca9a2a;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(184, 134, 11, 0.2);
}

/* 价格标签样式 */
.price-tag {
  margin: 1.5rem 0;
  font-size: 1.5rem;
  color: var(--theme-accent);
  font-weight: bold;
}

.price-tag .note {
  font-size: 0.9rem;
  color: var(--theme-secondary);
  font-weight: normal;
  display: block;
  margin-top: 0.5rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .paywall {
      padding: 1.5rem;
  }
  
  .benefits-list li {
      padding-left: 1.8rem;
      margin-bottom: 0.8rem;
  }
}

/* --- 隐私声明--- */
/* --- Policy Links --- */
.policy-links {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid #e0d9d1;
}

.policy-link {
  color: var(--theme-secondary);
  text-decoration: none;
  margin: 0 0.5rem;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.policy-link:hover {
  color: var(--theme-accent);
  text-decoration: underline;
}


/* --- Modal Styles --- */
.modal {
  display: none; 
  position: fixed; 
  z-index: 1000; 
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto; 
  background-color: rgba(0,0,0,0.6);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

.modal-content {
  margin: 10% auto;
  padding: 2rem 3rem;
  width: 80%;
  max-width: 700px;
  position: relative;
  line-height: 1.8;
}

.modal-content h2 {
  margin-bottom: 1.5rem;
  color: var(--theme-accent);
}

.close-btn {
  color: #aaa;
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
}

.close-btn:hover,
.close-btn:focus {
  color: #000;
}

/* --- Pricing Box --- */
.pricing-item {
  border: 1px solid #e0d9d1;
  padding: 1.5rem;
  border-radius: 8px;
  margin-top: 1rem;
}
.price {
  font-size: 2rem;
  font-weight: bold;
  color: var(--theme-accent);
  margin: 0.5rem 0;
}


/* --- 新增：进度条和加载提示样式 --- */
#loader-section {
  padding: 3rem 1rem;
  text-align: center;
}

.progress-bar-container {
  width: 100%;
  height: 8px;
  background-color: #e0d9d1; /* 进度条轨道的颜色 */
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.progress-bar-fill {
  width: 100%;
  height: 100%;
  background-color: var(--theme-accent); /* 进度条的颜色 */
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease-out; /* 让进度条前进更平滑 */
  border-radius: 4px;
}

.loader-message {
  color: var(--theme-secondary);
  font-size: 0.9rem;
  min-height: 2em; /* 给提示语留出固定高度，防止切换时页面跳动 */
  transition: opacity 0.5s ease;
}