/* common.css - 数字家谱通用样式库 */
:root {
  /* 主色调 - 中国风、沉稳、传承 */
  --color-primary: #2c5530; /* 深绿：家族之树，根深叶茂 */
  --color-secondary: #b9935a; /* 棕黄：大地、古籍、温暖 */
  --color-accent: #8b4513; /* 深棕：强调、历史厚重感 */
  --color-success: #28a745;
  --color-danger: #dc3545;
  --color-warning: #ffc107;
  --color-info: #17a2b8;

  /* 中性色 */
  --color-light: #f8f9fa;
  --color-dark: #343a40;
  --color-white: #ffffff;
  --color-gray: #6c757d;
  --color-gray-light: #e9ecef;

  /* 背景与文字 */
  --bg-body: #fefdf7; /* 米白背景，如宣纸 */
  --bg-card: var(--color-white);
  --text-primary: var(--color-dark);
  --text-secondary: var(--color-gray);

  /* 样式变量 */
  --border-radius: 0.75rem;
  --border-radius-sm: 0.375rem;
  --box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.08);
  --box-shadow-sm: 0 0.125rem 0.5rem rgba(0, 0, 0, 0.05);
  --transition: all 0.3s ease-in-out;

  /* 字体 */
  --font-family-sans: 'Segoe UI', 'Microsoft YaHei', Tahoma, Geneva, Verdana, sans-serif;
  --font-family-serif: 'SimSun', 'Times New Roman', serif;
}

/* 基础重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-body);
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-20c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%232c5530' fill-opacity='0.02' fill-rule='evenodd'/%3E%3C/svg%3E");
}

/* 容器 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-fluid {
  width: 100%;
  padding: 0 1.5rem;
}

/* 导航栏 */
.navbar {
  background-color: var(--bg-card);
  box-shadow: var(--box-shadow-sm);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1020;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.navbar-nav {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-white);
  background-color: var(--color-primary);
}

/* 通用卡片样式 - 非常重要！ */
.card {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow-sm);
  border: none;
  overflow: hidden;
  transition: var(--transition);
  margin-bottom: 1.5rem;
}

.card:hover {
  box-shadow: var(--box-shadow);
  transform: translateY(-0.25rem);
}

.card-header {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 1rem 1.5rem;
  border-bottom: none;
}

.card-body {
  padding: 1.5rem;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--border-radius-sm);
  text-decoration: none;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: #234526;
  color: var(--color-white);
}

.btn-outline-primary {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-outline-primary:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* 工具类 - 像Bootstrap一样方便 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-flex { display: flex; }
.justify-content-center { justify-content: center; }
.align-items-center { align-items: center; }
.flex-column { flex-direction: column; }

.mt-1 { margin-top: 0.5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; } .mt-4 { margin-top: 2rem; } .mt-5 { margin-top: 3rem; }
.mb-1 { margin-bottom: 0.5rem; } .mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; } .mb-4 { margin-bottom: 2rem; } .mb-5 { margin-bottom: 3rem; }

.p-1 { padding: 0.5rem; } .p-2 { padding: 1rem; } .p-3 { padding: 1.5rem; } .p-4 { padding: 2rem; } .p-5 { padding: 3rem; }

/* 响应式 */
@media (max-width: 768px) {
  .navbar-nav {
      flex-direction: column;
      gap: 0.5rem;
  }
  .container {
      padding: 0 1rem;
  }
}