/* ===== 扬翼实验室管理系统 全局样式 ===== */
:root {
  --primary: #1a56db;
  --primary-dark: #1e40af;
  --primary-light: #e8edff;
  --bg: #f1f5f9;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-secondary: #64748b;
  --danger: #dc2626;
  --success: #16a34a;
  --warning: #d97706;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}

/* ===== 登录页 ===== */
.login-body {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #1e3a5f 0%, #1a56db 100%);
}
.login-card {
  background: var(--surface);
  padding: 48px 40px;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  width: 400px;
  max-width: 90vw;
}
.login-logo {
  text-align: center; margin-bottom: 32px;
}
.login-logo h1 {
  font-size: 24px; color: var(--primary-dark); margin-bottom: 4px;
}
.login-logo p { color: var(--text-secondary); font-size: 13px; }

/* ===== 通用表单 ===== */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block; margin-bottom: 6px; font-weight: 500; font-size: 13px;
  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 0.2s, box-shadow 0.2s;
  background: var(--surface);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border: none; border-radius: var(--radius);
  font-size: 13px; font-weight: 500; cursor: pointer;
  transition: all 0.15s; font-family: inherit;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-block { width: 100%; justify-content: center; padding: 12px; font-size: 15px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ===== 主布局 ===== */
.app-layout { display: flex; flex-direction: column; min-height: 100vh; }

.topbar {
  background: var(--surface); border-bottom: 1px solid var(--border);
  padding: 0 24px; height: 56px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 100;
}
.topbar-left { display: flex; align-items: center; gap: 16px; }
.topbar-logo {
  font-size: 18px; font-weight: 700; color: var(--primary-dark);
  display: flex; align-items: center; gap: 8px;
}
.topbar-logo .badge {
  background: var(--primary); color: #fff; font-size: 11px;
  padding: 2px 8px; border-radius: 10px; font-weight: 500;
}
.topbar-right { display: flex; align-items: center; gap: 12px; }
.user-info { font-size: 13px; color: var(--text-secondary); }

/* ===== 工具栏 ===== */
.toolbar {
  background: var(--surface); border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.toolbar .search-box {
  flex: 1; max-width: 320px; position: relative;
}
.toolbar .search-box input {
  width: 100%; padding: 8px 12px 8px 34px;
  border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 13px;
}
.toolbar .search-box::before {
  content: "🔍"; position: absolute; left: 10px; top: 50%;
  transform: translateY(-50%); font-size: 13px; opacity: 0.5;
}
.toolbar select {
  padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 13px; background: var(--surface);
}
.toolbar .spacer { flex: 1; }

/* ===== 表格 ===== */
.table-container {
  flex: 1; overflow: auto; padding: 16px 24px;
}
.data-table {
  width: 100%; border-collapse: collapse; background: var(--surface);
  border-radius: var(--radius); box-shadow: var(--shadow);
  overflow: hidden;
}
.data-table thead { background: #f8fafc; position: sticky; top: 0; z-index: 10; }
.data-table th {
  padding: 10px 12px; text-align: left; font-size: 12px; font-weight: 600;
  color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px;
  border-bottom: 2px solid var(--border); cursor: pointer; user-select: none;
  white-space: nowrap;
}
.data-table th:hover { color: var(--primary); }
.data-table th .sort-arrow { font-size: 10px; margin-left: 4px; }
.data-table td {
  padding: 10px 12px; border-bottom: 1px solid var(--border);
  font-size: 13px; vertical-align: middle;
}
.data-table tbody tr { transition: background 0.1s; }
.data-table tbody tr:hover { background: #f8fafc; }
.data-table tbody tr.selected { background: var(--primary-light); }
.data-table tbody tr:last-child td { border-bottom: none; }

/* 状态标签 */
.status-tag {
  display: inline-block; padding: 2px 10px; border-radius: 12px;
  font-size: 12px; font-weight: 500;
}
.status-在用 { background: #dcfce7; color: #166534; }
.status-闲置 { background: #fef9c3; color: #854d0e; }
.status-维修中 { background: #ffedd5; color: #9a3412; }
.status-已报废 { background: #fee2e2; color: #991b1b; }

/* 复选框 */
.checkbox-cell { width: 40px; text-align: center; }
.checkbox-cell input[type="checkbox"] {
  width: 16px; height: 16px; cursor: pointer; accent-color: var(--primary);
}

/* 行操作按钮 */
.row-actions { display: flex; gap: 4px; }
.row-actions button {
  background: none; border: none; cursor: pointer;
  font-size: 14px; padding: 4px 6px; border-radius: 4px;
}
.row-actions button:hover { background: var(--bg); }

/* ===== 统计栏 ===== */
.stats-bar {
  display: flex; gap: 24px; padding: 12px 24px;
  background: var(--surface); border-bottom: 1px solid var(--border);
  font-size: 13px; color: var(--text-secondary);
}
.stats-bar strong { color: var(--text); font-size: 16px; margin-right: 4px; }

/* ===== 模态框 ===== */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; opacity: 0; visibility: hidden;
  transition: opacity 0.2s;
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal {
  background: var(--surface); border-radius: 12px;
  width: 560px; max-width: 95vw; max-height: 90vh;
  overflow-y: auto; padding: 24px;
  transform: translateY(20px); transition: transform 0.2s;
}
.modal-overlay.active .modal { transform: translateY(0); }
.modal-title {
  font-size: 18px; font-weight: 600; margin-bottom: 20px;
  display: flex; justify-content: space-between; align-items: center;
}
.modal-close {
  background: none; border: none; font-size: 22px; cursor: pointer;
  color: var(--text-secondary); line-height: 1;
}
.modal-footer {
  display: flex; justify-content: flex-end; gap: 10px;
  margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--border);
}

/* ===== Toast 通知 ===== */
.toast-container {
  position: fixed; top: 70px; right: 24px; z-index: 2000;
  display: flex; flex-direction: column; gap: 8px;
}
.toast {
  padding: 12px 20px; border-radius: var(--radius);
  background: var(--text); color: #fff; font-size: 13px;
  box-shadow: var(--shadow-md);
  animation: slideIn 0.2s ease;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
@keyframes slideIn { from { transform: translateX(100px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ===== 快捷键提示 ===== */
.shortcut-hint {
  position: fixed; bottom: 16px; left: 24px;
  font-size: 12px; color: var(--text-secondary);
  background: var(--surface); padding: 8px 14px; border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex; gap: 16px; align-items: center;
}
.shortcut-hint kbd {
  background: var(--bg); border: 1px solid var(--border);
  padding: 1px 6px; border-radius: 4px; font-size: 11px;
  font-family: monospace;
}

/* ===== 导入预览 ===== */
.import-preview-table {
  width: 100%; border-collapse: collapse; font-size: 12px; margin-top: 12px;
}
.import-preview-table th, .import-preview-table td {
  padding: 6px 8px; border: 1px solid var(--border); text-align: left;
}
.import-preview-table th { background: var(--bg); }

/* ===== 空状态 ===== */
.empty-state {
  text-align: center; padding: 60px 20px; color: var(--text-secondary);
}
.empty-state .icon { font-size: 48px; margin-bottom: 12px; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .toolbar { padding: 10px 12px; }
  .table-container { padding: 8px; }
  .form-row { grid-template-columns: 1fr; }
  .shortcut-hint { display: none; }
}