/* 基础设置 */
:root {
  --paper-color: #f0f4f4;
  --paper-dark: #e8eeef;
  --ink-color: #2c3e50;
  --ink-light: #5a6c7d;
  --seal-red: #c41e3a;
  --seal-dark: #8b0000;
  --line-color: #d0d8dc;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --desk-color: #7a8b8c;
  --desk-dark: #5a6b6c;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Serif SC', 'SimSun', 'STSong', serif;
  background: linear-gradient(135deg, var(--desk-dark) 0%, var(--desk-color) 50%, var(--desk-dark) 100%);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
}

/* 诗词容器 */
.poetry-container {
  position: relative;
  width: 100%;
  max-width: 800px;
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 40px 20px;
}

/* 返回按钮 */
.back-btn {
  position: fixed;
  top: 30px;
  left: 30px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line-color);
  border-radius: 30px;
  color: var(--ink-color);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.3s ease;
  z-index: 100;
  box-shadow: 0 4px 15px var(--shadow-color);
}

.back-btn:hover {
  background: var(--paper-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--shadow-color);
}

/* 页面标题 */
.page-header {
  text-align: center;
  margin-bottom: 40px;
  padding-top: 20px;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--paper-color);
  letter-spacing: 8px;
  margin-bottom: 10px;
  font-family: 'ZCO XingKai', 'KaiTi', 'STKaiti', serif;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.page-subtitle {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 4px;
}

/* 诗词列表 */
.poetry-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
  padding-right: 10px;
}

.list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: var(--paper-color);
  border-radius: 12px;
  box-shadow: 
    0 4px 6px rgba(0,0,0,0.05),
    0 10px 20px rgba(0,0,0,0.08);
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid rgba(255,255,255,0.5);
}

.list-item:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 8px 12px rgba(0,0,0,0.1),
    0 20px 40px rgba(0,0,0,0.1);
}

.item-content {
  flex: 1;
}

.item-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--ink-color);
  margin-bottom: 6px;
  font-family: 'ZCO XingKai', 'KaiTi', serif;
}

.item-author {
  font-size: 0.85rem;
  color: var(--ink-light);
  margin-bottom: 8px;
  letter-spacing: 2px;
}

.item-preview {
  font-size: 0.9rem;
  color: var(--ink-light);
  opacity: 0.8;
}

.item-arrow {
  font-size: 1.5rem;
  color: var(--ink-light);
  opacity: 0.5;
  transition: all 0.3s ease;
}

.list-item:hover .item-arrow {
  opacity: 1;
  transform: translateX(4px);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .page-title {
    font-size: 2rem;
  }
  
  .back-btn {
    top: 15px;
    left: 15px;
    padding: 8px 16px;
    font-size: 0.8rem;
  }
  
  .list-item {
    padding: 16px 20px;
  }
  
  .item-title {
    font-size: 1.1rem;
  }
}