/* 公共样式 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.btn {
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  border: none;
  font-weight: 600;
  font-size: 14px;
}

.btn-primary {
  background: linear-gradient(to right, #f59e0b, #d97706);
  color: white;
}

.btn-primary:hover {
  background: linear-gradient(to right, #fbbf24, #f59e0b);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.btn-danger {
  background: linear-gradient(to right, #ef4444, #dc2626);
  color: white;
}

.btn-danger:hover {
  background: linear-gradient(to right, #f87171, #ef4444);
}

.btn-secondary {
  background: #6b7280;
  color: white;
}

.btn-secondary:hover {
  background: #4b5563;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  color: #374151;
  font-size: 14px;
}

.form-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-sizing: border-box;
}

.form-input:focus {
  outline: none;
  border-color: #f59e0b;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
}

/* Toast 提示 */
.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 24px;
  border-radius: 8px;
  color: white;
  font-size: 14px;
  z-index: 9999;
  animation: toastIn 0.3s ease-out;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.toast-success { background: #10b981; }
.toast-error { background: #ef4444; }
.toast-warning { background: #f59e0b; }
.toast-info { background: #3b82f6; }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(-20px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* 表格样式 */
.table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.table th {
  background: #f9fafb;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  color: #374151;
  font-size: 13px;
  border-bottom: 2px solid #e5e7eb;
}

.table td {
  padding: 12px 16px;
  border-bottom: 1px solid #f3f4f6;
  font-size: 14px;
  color: #4b5563;
}

.table tr:hover td {
  background: #fefce8;
}

/* 模态框 */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal {
  background: white;
  border-radius: 12px;
  padding: 24px;
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  color: #1f2937;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
}

.pagination button {
  padding: 6px 12px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background: white;
  cursor: pointer;
  font-size: 13px;
}

.pagination button.active {
  background: #f59e0b;
  color: white;
  border-color: #f59e0b;
}

.pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 侧边栏（管理后台） */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 240px;
  background: #1f2937;
  color: white;
  padding: 20px 0;
  flex-shrink: 0;
}

.sidebar-title {
  padding: 0 20px 20px;
  font-size: 18px;
  font-weight: 700;
  border-bottom: 1px solid #374151;
}

.sidebar-nav a {
  display: block;
  padding: 12px 20px;
  color: #9ca3af;
  text-decoration: none;
  transition: all 0.2s;
  font-size: 14px;
}

.sidebar-nav a:hover, .sidebar-nav a.active {
  background: #374151;
  color: #f59e0b;
}

.admin-content {
  flex: 1;
  padding: 24px;
  background: #f9fafb;
}

/* 标签 */
.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.tag-success { background: #d1fae5; color: #065f46; }
.tag-danger { background: #fee2e2; color: #991b1b; }
.tag-warning { background: #fef3c7; color: #92400e; }
.tag-info { background: #dbeafe; color: #1e40af; }