/* --- CSS Variables (Color & Font Palette) --- */
:root {
    --theme-bg: #F5F5F0;
    --theme-text: #4A3F35;
    --theme-card: rgba(255, 255, 255, 0.75);
    --theme-accent: #C0A062;
    --theme-secondary: #A1887F;
    --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[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; /* 改为纵向排列以容纳页脚 */
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
    overflow-x: hidden;
  }
  
  /* --- 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) cubic-bezier(0.25, 0.1, 0.25, 1);
  }
  
  .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: 1280px;
    flex-grow: 1; /* 让主内容区域占据多余空间 */
    align-items: center; /* 垂直居中卡片 */
  }
  
  /* --- Card Styles --- */
  .card {
    padding: 3rem;
    width: 45%;
    max-width: 800px;
    flex-shrink: 0;
    transition: opacity var(--transition-speed) cubic-bezier(0.25, 0.1, 0.25, 1), 
                transform var(--transition-speed) cubic-bezier(0.25, 0.1, 0.25, 1);
  }
  
  .input-card {
    background-color: transparent;
  }
  
  /* --- 结果卡片背景图优化 --- */
  .result-card {
    position: relative; /* 用于定位伪元素 */
    background-color: transparent; /* 背景色交给伪元素处理 */
    border-radius: 12px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
    overflow: hidden; /* 隐藏伪元素超出的部分 */
    isolation: isolate; /* 创建新的堆叠上下文 */
  }
  
  .result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1; /* 将伪元素置于内容之下 */
    
    /* 在此设置您的兰花图片 */
    background-image: url('../images/orchid-1560590_640.png');
    background-size: cover;
    background-position: center;
    
    /* 添加半透明叠加层和模糊效果 */
    background-color: var(--theme-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    opacity: 0.1; /* 调整背景图片的透明度，使其更柔和 */
  }
  
  
  /* --- Card Content & Typography --- */
  .card-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--theme-text);
    margin-bottom: 0.5rem;
  }
  
  .card-subtitle {
    font-size: 1.1rem;
    color: var(--theme-secondary);
    margin-bottom: 2.5rem;
  }
  
  .arhat-name {
    font-size: 2rem;
    font-weight: 700;
    color: var(--theme-accent);
    text-align: center;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.1); /* 为标题文字添加轻微阴影以增强可读性 */
  }
  
  .divider {
    border: none;
    height: 1px;
    background-color: #d3c9bf;
    margin: 1.5rem 0;
    opacity: 0.7;
  }
  
  .arhat-poem {
    font-size: 1.5rem;
    line-height: 2.2;
    white-space: pre-wrap;
    text-align: center;
    min-height: 100px;
  }
  
  .arhat-explanation {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--theme-text);
    opacity: 0.9;
  }
  
  /* --- Form Elements --- */
  .form-group {
    margin-bottom: 1.5rem;
  }
  
  .form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--theme-secondary);
  }
  
  .form-group input {
    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 input:focus {
    outline: none;
    border-color: var(--theme-accent);
    box-shadow: 0 0 0 3px rgba(192, 160, 98, 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;
  }
  
  .submit-btn:hover {
    background-color: #d1b072;
    transform: translateY(-2px);
  }
  
  /* --- Action Buttons --- */
  .card-actions {
    margin-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .action-link, .action-btn {
    text-decoration: none;
    background: transparent;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--theme-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    transition: color var(--transition-speed) ease;
  }
  
  .action-link:hover, .action-btn:hover {
    color: var(--theme-accent);
  }
  
  .action-btn {
    padding: 0.5rem 1rem;
    border: 1px solid #DCD1C6;
    border-radius: 6px;
    transition: all var(--transition-speed) ease;
  }
  
  .action-btn:hover {
    background-color: var(--theme-bg);
    border-color: var(--theme-accent);
  }
  
  /* --- Animation & State Classes --- */
  .hidden {
    display: none;
    opacity: 0;
    transform: translateY(20px);
  }
  
  .visible {
    display: block;
    opacity: 1;
    transform: translateY(0);
  }
  
  /* --- 新增：页脚信息区域样式 --- */
  .info-section {
    width: 100%;
    max-width: 1280px;
    padding: 2rem 1rem;
    margin-top: 2rem;
    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) {
    .main-container {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        flex-grow: 0; /* 在平板上取消拉伸 */
    }
  
    .card {
        width: 100%;
        max-width: 550px;
    }
  
    .input-card {
        text-align: center;
    }
  
    .result-card {
        margin-top: 1rem;
    }
  
    /* 新增：页脚响应式 */
    .info-grid {
      grid-template-columns: 1fr;
      gap: 2rem;
    }
  }
  
  @media (max-width: 768px) {
    body {
        padding: 1rem;
        justify-content: flex-start; /* 从顶部开始排列 */
    }
    .app-header {
        top: 1rem;
        right: 1rem;
        left: 1rem;
        text-align: right;
    }
    .main-container {
        margin-top: 3rem;
    }
    .card {
        padding: 1.5rem;
    }
    .card-title {
        font-size: 2rem;
    }
    .arhat-poem {
        font-size: 1.2rem;
    }
    .card-actions {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }
    .action-btn {
        width: 100%;
        justify-content: center;
    }
  }