/* --- 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;
  }
}