/* ===== CSS Variables (vue-pure-admin inspired) ===== */
:root {
  --primary: #409eff;
  --primary-light: #66b1ff;
  --primary-dark: #337ecc;
  --success: #67c23a;
  --warning: #e6a23c;
  --danger: #f56c6c;
  --info: #909399;

  --sidebar-bg: #001529;
  --sidebar-light-bg: #fff;
  --sidebar-text: rgba(255,255,255,.65);
  --sidebar-active-text: #fff;
  --sidebar-active-before: #409eff;
  --sidebar-hover-bg: rgba(64,145,247,.15);
  --sidebar-logo-bg: #002140;
  --sidebar-width: 230px;
  --sidebar-collapsed-width: 64px;
  --sub-menu-bg: #0f0303;

  --header-bg: #fff;
  --header-height: 50px;
  --tabs-height: 40px;

  --content-bg: #f0f2f5;
  --card-bg: #fff;
  --border-color: #ebeef5;
  --text-primary: #303133;
  --text-regular: #606266;
  --text-secondary: #909399;
  --text-placeholder: #c0c4cc;

  --shadow: 0 1px 4px rgba(0,21,41,.08);
  --radius: 6px;
  --radius-sm: 4px;
}

/* ===== Reset ===== */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html, body { height:100%; font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans SC",sans-serif; font-size:14px; color:var(--text-primary); background:var(--content-bg); }
a { color:var(--primary); text-decoration:none; }
a:hover { color:var(--primary-light); }
i { pointer-events:none; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width:6px; height:6px; }
::-webkit-scrollbar-thumb { background:#c0c4cc; border-radius:3px; }
::-webkit-scrollbar-track { background:transparent; }

/* ===== Login ===== */
.login-container {
  display:flex; align-items:center; justify-content:center;
  min-height:100vh;
  background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);
}
.login-card {
  width:420px; padding:40px;
  background:#fff; border-radius:8px; box-shadow:0 8px 40px rgba(0,0,0,.15);
}
.login-header { text-align:center; margin-bottom:32px; }
.login-logo {
  width:64px; height:64px; margin:0 auto 16px;
  background:linear-gradient(135deg,#409eff,#337ecc);
  border-radius:50%; display:flex; align-items:center; justify-content:center;
  font-size:28px; color:#fff;
}
.login-header h2 { font-size:22px; color:var(--text-primary); margin-bottom:6px; }
.login-header p { color:var(--text-secondary); font-size:14px; }
.login-form .form-item {
  display:flex; align-items:center;
  border:1px solid var(--border-color); border-radius:var(--radius-sm);
  margin-bottom:20px; padding:0 12px; transition:border-color .2s;
}
.login-form .form-item:focus-within { border-color:var(--primary); }
.form-icon { color:var(--text-secondary); font-size:16px; margin-right:8px; }
.form-item input {
  flex:1; border:none; outline:none; height:44px; font-size:14px; color:var(--text-primary);
}
.form-item input::placeholder { color:var(--text-placeholder); }
.login-btn {
  width:100%; height:44px;
  background:linear-gradient(135deg,#409eff,#337ecc);
  color:#fff; border:none; border-radius:var(--radius-sm);
  font-size:16px; cursor:pointer; transition:opacity .2s; letter-spacing:4px;
}
.login-btn:hover { opacity:.9; }

/* ===== App Layout ===== */
.app-container { display:flex; height:100vh; overflow:hidden; }

/* ===== Sidebar ===== */
.sidebar {
  width:var(--sidebar-width); min-height:100vh;
  background:var(--sidebar-bg); color:var(--sidebar-text);
  display:flex; flex-direction:column;
  transition:width .3s; overflow:hidden; flex-shrink:0;
}
.sidebar.collapsed { width:var(--sidebar-collapsed-width); }
.sidebar-logo {
  height:50px; display:flex; align-items:center;
  padding:0 16px; background:var(--sidebar-logo-bg);
  font-size:18px; font-weight:600; color:#fff; white-space:nowrap; overflow:hidden;
}
.sidebar-logo i { font-size:22px; margin-right:10px; color:var(--primary); }
.sidebar.collapsed .sidebar-logo span { display:none; }
.sidebar.collapsed .sidebar-logo { justify-content:center; padding:0; }
.sidebar.collapsed .sidebar-logo i { margin-right:0; }

/* Sidebar Menu */
.sidebar-menu { flex:1; overflow-y:auto; padding:8px 0; }
.menu-item {
  cursor:pointer; user-select:none; position:relative;
  transition:background .2s,color .2s;
}
.menu-item:hover { background:var(--sidebar-hover-bg); color:var(--sidebar-active-text); }
.menu-item.active { color:var(--sidebar-active-text); }
.menu-item.active::before {
  content:''; position:absolute; left:0; top:0; bottom:0;
  width:3px; background:var(--sidebar-active-before);
}
.menu-item .menu-label {
  display:flex; align-items:center; height:44px; padding:0 20px; white-space:nowrap;
}
.menu-item .menu-label i:first-child { width:20px; font-size:16px; margin-right:10px; }
.menu-item .menu-label .menu-text { flex:1; overflow:hidden; text-overflow:ellipsis; }
.menu-item .menu-label .menu-arrow { font-size:12px; transition:transform .3s; }
.menu-item.expanded .menu-arrow { transform:rotate(90deg); }
.sidebar.collapsed .menu-item .menu-text,
.sidebar.collapsed .menu-item .menu-arrow { display:none; }
.sidebar.collapsed .menu-item .menu-label i:first-child { margin-right:0; }
.sidebar.collapsed .menu-item .menu-label { justify-content:center; padding:0; }

/* Submenu */
.sub-menu { overflow:hidden; max-height:0; transition:max-height .3s; background:var(--sub-menu-bg); }
.menu-item.expanded > .sub-menu { max-height:500px; }
.sub-menu .menu-item .menu-label { padding-left:50px; height:38px; font-size:13px; }
.sidebar.collapsed .sub-menu { display:none; }

/* ===== Main Area ===== */
.main-area { flex:1; display:flex; flex-direction:column; overflow:hidden; }

/* ===== Top Header ===== */
.top-header {
  height:var(--header-height); background:var(--header-bg);
  display:flex; align-items:center; justify-content:space-between;
  padding:0 16px; box-shadow:var(--shadow); flex-shrink:0; z-index:10;
}
.header-left { display:flex; align-items:center; gap:12px; }
.collapse-btn {
  width:32px; height:32px; border:none; background:transparent;
  border-radius:var(--radius-sm); cursor:pointer; font-size:18px; color:var(--text-primary);
  display:flex; align-items:center; justify-content:center;
}
.collapse-btn:hover { background:#f0f2f5; }
.breadcrumb { font-size:14px; color:var(--text-secondary); }
.header-right { display:flex; align-items:center; gap:16px; }
.header-time { color:var(--text-secondary); font-size:13px; }
.user-dropdown {
  position:relative; display:flex; align-items:center; gap:6px;
  cursor:pointer; padding:4px 12px; border-radius:var(--radius-sm);
  font-size:14px; color:var(--text-primary);
}
.user-dropdown:hover { background:#f0f2f5; }
.user-dropdown i:first-child { font-size:20px; color:var(--primary); }
.dropdown-menu {
  position:absolute; top:100%; right:0; min-width:140px;
  background:#fff; border-radius:var(--radius-sm);
  box-shadow:0 4px 16px rgba(0,0,0,.12); z-index:100;
  display:none; overflow:hidden;
}
.user-dropdown:hover .dropdown-menu { display:block; }
.dropdown-menu a {
  display:flex; align-items:center; gap:8px;
  padding:10px 16px; color:var(--text-regular); font-size:13px; cursor:pointer;
}
.dropdown-menu a:hover { background:#f0f2f5; color:var(--primary); }

/* ===== Tabs Bar ===== */
.tabs-bar {
  height:var(--tabs-height); background:var(--header-bg);
  display:flex; align-items:center; padding:0 8px;
  border-bottom:1px solid var(--border-color); flex-shrink:0; overflow-x:auto;
}
.tab-item {
  display:flex; align-items:center; gap:6px;
  padding:4px 14px; margin-right:4px;
  font-size:13px; color:var(--text-secondary); cursor:pointer; white-space:nowrap;
  border-radius:var(--radius-sm); transition:all .2s; position:relative;
}
.tab-item.active { color:var(--primary); background:#ecf5ff; }
.tab-item .tab-close { font-size:12px; opacity:0; transition:opacity .2s; }
.tab-item:hover .tab-close { opacity:.6; }
.tab-item .tab-close:hover { opacity:1; color:var(--danger); }

/* ===== Content ===== */
.content {
  flex:1; padding:16px; overflow-y:auto; background:var(--content-bg);
}

/* ===== Page Common ===== */
.page-header {
  display:flex; align-items:center; justify-content:space-between; margin-bottom:16px;
}
.page-header h3 { font-size:18px; font-weight:600; color:var(--text-primary); }
.page-tools { display:flex; align-items:center; gap:8px; }

/* ===== Search Form ===== */
.search-bar {
  background:var(--card-bg); padding:16px; border-radius:var(--radius);
  margin-bottom:16px; box-shadow:var(--shadow);
  display:flex; flex-wrap:wrap; align-items:flex-end; gap:12px;
}
.search-bar .form-item {
  display:flex; flex-direction:column; gap:4px;
}
.search-bar .form-item label { font-size:12px; color:var(--text-secondary); }
.search-bar input, .search-bar select {
  height:34px; padding:0 10px; border:1px solid var(--border-color);
  border-radius:var(--radius-sm); font-size:13px; outline:none; transition:border-color .2s;
}
.search-bar input:focus, .search-bar select:focus { border-color:var(--primary); }

/* ===== Buttons ===== */
.btn {
  display:inline-flex; align-items:center; gap:4px;
  height:32px; padding:0 14px; border:none; border-radius:var(--radius-sm);
  font-size:13px; cursor:pointer; transition:all .2s; white-space:nowrap;
}
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--primary-dark); }
.btn-success { background:var(--success); color:#fff; }
.btn-success:hover { opacity:.85; }
.btn-warning { background:var(--warning); color:#fff; }
.btn-warning:hover { opacity:.85; }
.btn-danger { background:var(--danger); color:#fff; }
.btn-danger:hover { opacity:.85; }
.btn-info { background:var(--info); color:#fff; }
.btn-info:hover { opacity:.85; }
.btn-plain { background:#fff; color:var(--text-regular); border:1px solid var(--border-color); }
.btn-plain:hover { color:var(--primary); border-color:var(--primary); }
.btn-sm { height:28px; padding:0 10px; font-size:12px; }
.btn-text { background:transparent; color:var(--primary); padding:0 4px; }
.btn-text:hover { color:var(--primary-light); }
.btn:disabled { opacity:.5; cursor:not-allowed; }

/* ===== Cards ===== */
.card {
  background:var(--card-bg); border-radius:var(--radius);
  box-shadow:var(--shadow); padding:16px; margin-bottom:16px;
}
.card-title { font-size:15px; font-weight:600; margin-bottom:12px; color:var(--text-primary); }

/* ===== Dashboard Stats ===== */
.stats-row { display:grid; grid-template-columns:repeat(auto-fill,minmax(210px,1fr)); gap:16px; margin-bottom:16px; }
.stat-card {
  background:var(--card-bg); border-radius:var(--radius); padding:20px;
  box-shadow:var(--shadow); display:flex; align-items:center; gap:16px;
}
.stat-card .stat-icon {
  width:52px; height:52px; border-radius:12px;
  display:flex; align-items:center; justify-content:center; font-size:24px; color:#fff;
}
.stat-card .stat-info { flex:1; }
.stat-card .stat-value { font-size:26px; font-weight:700; line-height:1.2; }
.stat-card .stat-label { font-size:13px; color:var(--text-secondary); margin-top:2px; }

/* ===== Table ===== */
.table-container { overflow-x:auto; }
table { width:100%; border-collapse:collapse; }
table th, table td {
  padding:10px 12px; text-align:left; font-size:13px;
  border-bottom:1px solid var(--border-color); white-space:nowrap;
}
table th { background:#fafafa; font-weight:600; color:var(--text-regular); }
table tr:hover td { background:#f5f7fa; }
table td .text-link { color:var(--primary); cursor:pointer; }
table td .text-link:hover { text-decoration:underline; }
table td .tag {
  display:inline-block; padding:2px 8px; border-radius:3px; font-size:12px;
}
.tag-primary { background:#ecf5ff; color:var(--primary); }
tag-success { background:#f0f9eb; color:var(--success); }
.tag-warning { background:#fdf6ec; color:var(--warning); }
.tag-danger { background:#fef0f0; color:var(--danger); }
.tag-info { background:#f4f4f5; color:var(--info); }
tag-success, .tag-success { background:#f0f9eb; color:var(--success); }
.tag-warning, .tag-warning { background:#fdf6ec; color:var(--warning); }
.tag-danger, .tag-danger { background:#fef0f0; color:var(--danger); }
.tag-info, .tag-info { background:#f4f4f5; color:var(--info); }

/* ===== Pagination ===== */
.pagination {
  display:flex; align-items:center; justify-content:flex-end;
  gap:4px; margin-top:16px; font-size:13px;
}
.pagination .page-btn {
  min-width:30px; height:30px; display:flex; align-items:center; justify-content:center;
  border:1px solid var(--border-color); border-radius:var(--radius-sm);
  background:#fff; cursor:pointer; color:var(--text-regular);
}
.pagination .page-btn:hover { color:var(--primary); border-color:var(--primary); }
.pagination .page-btn.active { background:var(--primary); color:#fff; border-color:var(--primary); }
.pagination .page-btn:disabled { opacity:.4; cursor:not-allowed; }
.pagination .page-info { margin:0 8px; color:var(--text-secondary); }

/* ===== Modal ===== */
.modal-overlay {
  position:fixed; inset:0; background:rgba(0,0,0,.45);
  display:flex; align-items:center; justify-content:center; z-index:2000;
}
.modal-content {
  width:680px; max-height:80vh; background:#fff; border-radius:var(--radius);
  display:flex; flex-direction:column; box-shadow:0 8px 40px rgba(0,0,0,.2);
}
.modal-content.modal-lg { width:860px; }
.modal-header {
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 20px; border-bottom:1px solid var(--border-color);
}
.modal-title { font-size:16px; font-weight:600; }
.modal-close {
  width:30px; height:30px; border:none; background:transparent;
  font-size:22px; cursor:pointer; color:var(--text-secondary);
  border-radius:var(--radius-sm); display:flex; align-items:center; justify-content:center;
}
.modal-close:hover { background:#f0f2f5; color:var(--text-primary); }
.modal-body { padding:20px; overflow-y:auto; flex:1; }

/* ===== Form (inside modal) ===== */
.form-group { margin-bottom:16px; }
.form-group label { display:block; font-size:13px; color:var(--text-regular); margin-bottom:6px; font-weight:500; }
.form-group input, .form-group select, .form-group textarea {
  width:100%; height:34px; padding:0 10px; border:1px solid var(--border-color);
  border-radius:var(--radius-sm); font-size:13px; outline:none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color:var(--primary); }
.form-group textarea { height:80px; padding:8px 10px; resize:vertical; }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.form-actions { display:flex; justify-content:flex-end; gap:8px; margin-top:20px; }

/* ===== Barcode input ===== */
.barcode-input-group {
  display:flex; gap:8px; align-items:center;
}
.barcode-input-group input { flex:1; height:34px; padding:0 10px; border:1px solid var(--border-color); border-radius:var(--radius-sm); font-size:16px; letter-spacing:2px; }
.barcode-input-group input:focus { border-color:var(--primary); outline:none; }

/* ===== Location display ===== */
.location-badge {
  display:inline-flex; align-items:center; gap:4px;
  padding:2px 10px; background:#ecf5ff; color:var(--primary);
  border-radius:4px; font-size:12px; font-weight:500;
}

/* ===== Empty State ===== */
.empty-state { text-align:center; padding:40px 20px; color:var(--text-secondary); }
.empty-state i { font-size:48px; margin-bottom:12px; color:var(--text-placeholder); }
.empty-state p { font-size:14px; }

/* ===== Responsive ===== */
@media (max-width:768px) {
  .sidebar:not(.collapsed) { width:64px; }
  .sidebar:not(.collapsed) .sidebar-logo span,
  .sidebar:not(.collapsed) .menu-item .menu-text,
  .sidebar:not(.collapsed) .menu-item .menu-arrow { display:none; }
  .sidebar:not(.collapsed) .menu-item .menu-label i:first-child { margin-right:0; }
  .sidebar:not(.collapsed) .menu-item .menu-label { justify-content:center; padding:0; }
  .sidebar:not(.collapsed) .sub-menu { display:none; }
  .stats-row { grid-template-columns:repeat(2,1fr); }
  .form-row { grid-template-columns:1fr; }
}

/* ===== Detail Grid ===== */
.detail-grid { display:grid; grid-template-columns:1fr 1fr; gap:8px 20px; }
.detail-row { display:flex; align-items:center; padding:4px 0; border-bottom:1px dashed #eee; }
.detail-label { min-width:80px; font-size:13px; color:var(--text-secondary); flex-shrink:0; }