/* ========== 小飞AI 管理后台样式 ========== */

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

:root {
  --primary: #16a34a;
  --primary-dark: #15803d;
  --primary-light: #dcfce7;
  --danger: #ef4444;
  --danger-light: #fef2f2;
  --warning: #f59e0b;
  --bg: #f0fdf4;
  --card: #ffffff;
  --text: #1f2937;
  --text-secondary: #6b7280;
  --border: #e5e7eb;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ========== 登录页 ========== */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #16a34a 0%, #15803d 50%, #14532d 100%);
}
.login-card {
  background: white;
  border-radius: 16px;
  padding: 48px 40px;
  width: 400px;
  max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
  text-align: center;
}
.login-logo { font-size: 64px; margin-bottom: 8px; }
.login-card h1 { font-size: 28px; color: var(--primary-dark); margin-bottom: 4px; }
.login-subtitle { color: var(--text-secondary); margin-bottom: 32px; font-size: 14px; }
.login-hint { margin-top: 20px; color: var(--text-secondary); font-size: 12px; }

/* ========== 主面板布局 ========== */
.main-container { display: flex; min-height: 100vh; }

/* 侧边栏 */
.sidebar {
  width: 220px;
  background: white;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; bottom: 0; left: 0;
  z-index: 100;
}
.sidebar-header {
  padding: 20px 16px;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
}
.sidebar-logo { font-size: 24px; }
.sidebar-nav { flex: 1; padding: 8px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: var(--radius);
  color: var(--text); text-decoration: none;
  font-size: 14px; transition: all .15s;
  margin-bottom: 2px;
}
.nav-item:hover { background: var(--primary-light); color: var(--primary-dark); }
.nav-item.active { background: var(--primary); color: white; font-weight: 600; }
.nav-icon { font-size: 18px; width: 24px; text-align: center; }

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13px; color: var(--text-secondary);
}

/* 内容区 */
.content {
  margin-left: 220px;
  flex: 1;
  padding: 32px;
  max-width: 1200px;
}

/* ========== 通用组件 ========== */
.page-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 24px;
}
.page-title { font-size: 24px; font-weight: 700; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 20px;
}

/* 统计卡片 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  text-align: center;
}
.stat-value { font-size: 32px; font-weight: 700; color: var(--primary-dark); }
.stat-label { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }

/* 表单 */
.form-group { margin-bottom: 16px; text-align: left; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  transition: border-color .15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(22,163,74,.15);
}
.form-group textarea { min-height: 100px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-inline { display: flex; gap: 8px; align-items: flex-end; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 20px; border: none; border-radius: var(--radius);
  font-size: 14px; font-weight: 600; cursor: pointer; transition: all .15s;
  text-decoration: none;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #dc2626; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-block { width: 100%; }

/* 表格 */
.table-container { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
th { background: #f9fafb; font-weight: 600; color: var(--text-secondary); font-size: 13px; }
tr:hover { background: #f9fafb; }

/* 标签/徽章 */
.badge {
  display: inline-block; padding: 2px 10px; border-radius: 100px;
  font-size: 12px; font-weight: 600;
}
.badge-green { background: var(--primary-light); color: var(--primary-dark); }
.badge-red { background: var(--danger-light); color: var(--danger); }
.badge-gray { background: #f3f4f6; color: var(--text-secondary); }

.tag-container { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  display: inline-flex; align-items: center; gap: 4px;
  background: var(--primary-light); color: var(--primary-dark);
  padding: 3px 10px; border-radius: 100px; font-size: 12px;
}
.tag .tag-remove { cursor: pointer; font-weight: bold; margin-left: 2px; }

/* Toast提示 */
.toast {
  position: fixed; top: 20px; right: 20px; z-index: 9999;
  padding: 14px 24px; border-radius: var(--radius);
  color: white; font-size: 14px; font-weight: 600;
  box-shadow: 0 4px 12px rgba(0,0,0,.15);
  animation: slideIn .3s ease;
}
.toast-success { background: var(--primary); }
.toast-error { background: var(--danger); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* 模态框 */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.4);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
}
.modal {
  background: white; border-radius: 12px; padding: 28px;
  width: 560px; max-width: 90vw; max-height: 85vh; overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
}
.modal h3 { margin-bottom: 20px; font-size: 18px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 12px; margin-top: 20px; }

/* 响应式 */
@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .sidebar-header span:last-child,
  .nav-item span:last-child,
  .sidebar-footer span { display: none; }
  .content { margin-left: 60px; padding: 16px; }
  .form-row { grid-template-columns: 1fr; }
}