/* 小蓝书管理后台样式 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #f5f6fa;
  color: #2d3436;
  min-height: 100vh;
}

/* 导航 */
.main-nav {
  background: #fff;
  border-bottom: 1px solid #e8ecf1;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-brand {
  font-size: 16px;
  font-weight: 700;
  color: #6272e4;
  white-space: nowrap;
}
.nav-links {
  display: flex;
  gap: 6px;
  flex: 1;
}
.nav-link {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: #636e72;
  text-decoration: none;
  transition: all 0.15s;
}
.nav-link:hover { background: #f0f2ff; color: #6272e4; }
.nav-link.active { background: #eef0ff; color: #6272e4; font-weight: 600; }
.nav-logout {
  background: none;
  border: 1px solid #dfe6e9;
  color: #636e72;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
}
.nav-logout:hover { border-color: #e85d6c; color: #e85d6c; }

/* 内容区 */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}
.page-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
  color: #2d3436;
}

/* 统计卡片 */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.stat-card {
  background: #fff;
  border: 1px solid #e8ecf1;
  border-radius: 12px;
  padding: 20px;
}
.stat-label {
  font-size: 12px;
  color: #b2bec3;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: #2d3436;
}

/* 表格 */
.table-wrap {
  background: #fff;
  border: 1px solid #e8ecf1;
  border-radius: 12px;
  overflow: hidden;
}
table {
  width: 100%;
  border-collapse: collapse;
}
th {
  text-align: left;
  padding: 12px 16px;
  font-size: 11px;
  font-weight: 600;
  color: #b2bec3;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: #fafbfc;
  border-bottom: 1px solid #e8ecf1;
}
td {
  padding: 12px 16px;
  font-size: 13px;
  border-bottom: 1px solid #f0f2f5;
  color: #2d3436;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: #fafbfc; }

/* 按钮 */
.btn {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  border: 1px solid #dfe6e9;
  background: #fff;
  color: #636e72;
  transition: all 0.15s;
}
.btn:hover { border-color: #b2bec3; }
.btn-danger { color: #e85d6c; border-color: rgba(232,93,108,0.3); }
.btn-danger:hover { background: rgba(232,93,108,0.06); border-color: #e85d6c; }
.btn-primary { background: #6272e4; color: #fff; border-color: #6272e4; }
.btn-primary:hover { background: #5060d0; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}
.badge-green { background: rgba(61,214,140,0.1); color: #00b894; }
.badge-red { background: rgba(232,93,108,0.1); color: #e85d6c; }

.empty {
  text-align: center;
  padding: 48px;
  color: #b2bec3;
  font-size: 14px;
}

/* 登录页 */
.login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: #f5f6fa;
}
.login-box {
  background: #fff;
  border: 1px solid #e8ecf1;
  border-radius: 16px;
  padding: 40px 32px;
  width: 360px;
}
.login-title {
  font-size: 20px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 24px;
  color: #6272e4;
}
.form-group { margin-bottom: 16px; }
.form-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #dfe6e9;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
}
.form-input:focus { border-color: #6272e4; }
.form-error {
  color: #e85d6c;
  font-size: 12px;
  margin-top: 8px;
  display: none;
}
.total-count { font-size: 13px; color: #636e72; margin-bottom: 12px; font-weight: 500; }
.pagination { display: flex; align-items: center; gap: 4px; margin: 10px 0; flex-wrap: wrap; }
.btn-sm { padding: 4px 10px; font-size: 12px; border: 1px solid #dfe6e9; background: #fff; border-radius: 6px; cursor: pointer; font-family: inherit; }
.btn-sm:hover { border-color: #6272e4; color: #6272e4; }
.btn-sm.btn-primary { background: #6272e4; color: #fff; border-color: #6272e4; }
.btn-sm.btn-danger { color: #e85d6c; border-color: #e85d6c; }
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.4); display: flex; align-items: center; justify-content: center; z-index: 1000; }
.modal-panel { background: #fff; border-radius: 12px; padding: 24px; min-width: 320px; max-width: 480px; box-shadow: 0 20px 60px rgba(0,0,0,0.15); }
.modal-panel h3 { margin: 0 0 16px; font-size: 16px; }
.btn-primary { background: #6272e4; color: #fff; border: none; padding: 8px 16px; border-radius: 6px; cursor: pointer; font-family: inherit; font-size: 13px; }
.btn-primary:hover { background: #7b8ff0; }
code { background: #f0f2f5; padding: 2px 6px; border-radius: 4px; font-size: 12px; }