/* ============================================
   北洲股份 - 超级后台商务风格
   设计语言：深蓝侧栏+白色内容区、卡片、圆角、现代商务
   ============================================ */
:root {
  --primary: #1a2b4c;
  --primary-light: #2b4a8f;
  --accent: #3b82f6;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --text: #334155;
  --text-light: #94a3b8;
  --bg: #f1f5f9;
  --card: #ffffff;
  --border: #e2e8f0;
  --sidebar-w: 240px;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(15,23,42,.06), 0 4px 12px rgba(15,23,42,.04);
}
* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
a { text-decoration:none; color:inherit; }
ul { list-style:none; }

/* ===== 登录页 ===== */
.login-body {
  min-height:100vh;
  display:flex; align-items:center; justify-content:center;
  background: linear-gradient(135deg, #0f172a 0%, #1a2b4c 50%, #1e3a5f 100%);
  position:relative; overflow:hidden;
}
.login-body::before {
  content:''; position:absolute; width:500px; height:500px; border-radius:50%;
  background: radial-gradient(circle, rgba(59,130,246,.15), transparent 70%);
  top:-100px; right:-100px;
}
.login-body::after {
  content:''; position:absolute; width:400px; height:400px; border-radius:50%;
  background: radial-gradient(circle, rgba(16,185,129,.1), transparent 70%);
  bottom:-80px; left:-80px;
}
.login-box {
  position:relative; z-index:1;
  background:rgba(255,255,255,.98);
  border-radius:16px;
  padding:48px 44px;
  width:400px;
  box-shadow: 0 25px 60px rgba(0,0,0,.3);
}
.login-box .login-logo { text-align:center; margin-bottom:8px; }
.login-box .login-logo img { height:52px; }
.login-box h2 { color:var(--primary); text-align:center; font-size:22px; letter-spacing:2px; }
.login-box .sub { text-align:center; color:var(--text-light); font-size:12px; margin:6px 0 32px; letter-spacing:1px; }
.login-box .form-group { margin-bottom:22px; }
.login-box label { display:block; margin-bottom:8px; font-size:13px; color:var(--text); font-weight:500; }
.login-box .form-control {
  width:100%; padding:12px 16px; border:1px solid var(--border);
  border-radius:10px; font-size:14px; transition:all .2s; background:#f8fafc;
}
.login-box .form-control:focus { outline:none; border-color:var(--accent); background:#fff; box-shadow:0 0 0 3px rgba(59,130,246,.12); }
.login-box .btn {
  width:100%; padding:13px; background:linear-gradient(135deg, var(--accent), #2563eb);
  color:#fff; border:none; border-radius:10px; font-size:15px; cursor:pointer;
  letter-spacing:4px; font-weight:500; transition:all .2s;
}
.login-box .btn:hover { box-shadow:0 8px 20px rgba(59,130,246,.35); transform:translateY(-1px); }
.login-error { background:#fef2f2; color:var(--danger); padding:11px 16px; border-radius:8px; margin-bottom:18px; font-size:13px; border:1px solid #fecaca; }
.login-foot { text-align:center; color:var(--text-light); font-size:12px; margin-top:20px; }

/* ===== 后台布局 ===== */
.admin-wrap { display:flex; min-height:100vh; }

/* 侧边栏 */
.admin-sidebar {
  width:var(--sidebar-w);
  background:linear-gradient(180deg, #0f172a, #16213e);
  color:rgba(255,255,255,.7);
  flex-shrink:0;
  position:fixed; top:0; bottom:0; left:0; z-index:100;
  display:flex; flex-direction:column;
  transition:all .3s;
}
.sidebar-logo {
  padding:22px 20px;
  border-bottom:1px solid rgba(255,255,255,.06);
  display:flex; align-items:center; justify-content:center; gap:10px;
}
.sidebar-logo img { height:48px; }
.sidebar-logo .logo-text { color:#fff; font-size:16px; font-weight:600; letter-spacing:1px; }
.sidebar-scroll { flex:1; overflow-y:auto; padding:12px 0 20px; }
.sidebar-scroll::-webkit-scrollbar { width:4px; }
.sidebar-scroll::-webkit-scrollbar-thumb { background:rgba(255,255,255,.15); border-radius:4px; }

.sidebar-menu { padding:0 12px; }
.sidebar-menu > a {
  display:flex; align-items:center; gap:12px;
  padding:12px 16px; margin-bottom:2px;
  color:rgba(255,255,255,.65); font-size:14px;
  border-radius:8px; transition:all .2s;
}
.sidebar-menu > a i:first-child { width:20px; text-align:center; font-size:15px; }
.sidebar-menu > a:hover { background:rgba(255,255,255,.06); color:#fff; }
.sidebar-menu > a.active {
  background:linear-gradient(135deg, rgba(59,130,246,.9), rgba(37,99,235,.8));
  color:#fff; box-shadow:0 4px 12px rgba(59,130,246,.3);
}

.menu-group { margin-bottom:2px; }
.menu-group-title {
  display:flex; align-items:center; gap:12px;
  padding:12px 16px; color:rgba(255,255,255,.65); font-size:14px;
  cursor:pointer; border-radius:8px; transition:all .2s; user-select:none;
}
.menu-group-title:hover { background:rgba(255,255,255,.06); color:#fff; }
.menu-group-title i:first-child { width:20px; text-align:center; font-size:15px; }
.menu-group-title .arrow { margin-left:auto; font-size:10px; transition:transform .3s; color:rgba(255,255,255,.35); }
.menu-group.open .menu-group-title .arrow { transform:rotate(180deg); }
.menu-group.open .menu-group-title { color:#fff; }
.menu-sub { display:none; padding:2px 0 4px 12px; }
.menu-group.open .menu-sub { display:block; }
.menu-sub a {
  display:flex; align-items:center; gap:10px;
  padding:10px 16px 10px 34px; margin-bottom:2px;
  color:rgba(255,255,255,.55); font-size:13px; border-radius:8px; transition:all .2s;
}
.menu-sub a i { font-size:12px; width:16px; text-align:center; }
.menu-sub a:hover { background:rgba(255,255,255,.06); color:#fff; }
.menu-sub a.active { background:rgba(59,130,246,.2); color:#60a5fa; }

.sidebar-foot {
  padding:14px 20px; border-top:1px solid rgba(255,255,255,.06);
  font-size:12px; color:rgba(255,255,255,.3); text-align:center;
}

/* 主区域 */
.admin-main { flex:1; margin-left:var(--sidebar-w); display:flex; flex-direction:column; min-width:0; }

/* 顶栏 */
.admin-header {
  background:#fff;
  height:62px;
  display:flex; align-items:center; justify-content:space-between;
  padding:0 24px;
  border-bottom:1px solid var(--border);
  position:sticky; top:0; z-index:90;
}
.admin-header .title { font-size:17px; font-weight:600; color:var(--primary); display:flex; align-items:center; gap:10px; }
.admin-header .title .breadcrumb { font-size:13px; color:var(--text-light); font-weight:400; }
.admin-header .title .breadcrumb a:hover { color:var(--accent); }
.admin-header .title .breadcrumb span { margin:0 6px; color:var(--border); }

.user-menu { display:flex; align-items:center; gap:16px; }
.user-menu .btn-icon {
  width:38px; height:38px; border-radius:10px; border:1px solid var(--border);
  display:flex; align-items:center; justify-content:center; color:var(--text);
  cursor:pointer; transition:all .2s; background:#fff;
}
.user-menu .btn-icon:hover { background:var(--bg); color:var(--accent); }
.user-box { display:flex; align-items:center; gap:10px; cursor:pointer; position:relative; }
.user-box .avatar {
  width:36px; height:36px; border-radius:50%;
  background:linear-gradient(135deg, var(--accent), #2563eb);
  color:#fff; display:flex; align-items:center; justify-content:center; font-size:15px; font-weight:600;
}
.user-box .name { font-size:14px; color:var(--text); font-weight:500; }
.user-box .dropdown {
  display:none; position:absolute; top:46px; right:0; width:180px;
  background:#fff; border-radius:12px; box-shadow:0 10px 30px rgba(15,23,42,.15);
  border:1px solid var(--border); overflow:hidden; z-index:99;
}
.user-box .dropdown.show { display:block; }
.user-box .dropdown a {
  display:flex; align-items:center; gap:10px; padding:12px 16px;
  color:var(--text); font-size:13px; transition:all .15s;
}
.user-box .dropdown a:hover { background:var(--bg); color:var(--accent); }
.user-box .dropdown a.danger { color:var(--danger); }
.user-box .dropdown a.danger:hover { background:#fef2f2; }

/* 内容区 */
.admin-content { padding:24px; flex:1; }

/* 卡片 */
.card {
  background:var(--card); border-radius:var(--radius); box-shadow:var(--shadow);
  padding:24px; margin-bottom:20px; border:1px solid var(--border);
}
.card-title { font-size:16px; font-weight:600; color:var(--primary); margin-bottom:20px; display:flex; align-items:center; gap:8px; }
.card-title .bar { width:4px; height:18px; background:var(--accent); border-radius:2px; display:inline-block; }

/* 统计卡片 */
.stat-cards { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-bottom:24px; }
.stat-card {
  background:#fff; border-radius:var(--radius); padding:24px;
  box-shadow:var(--shadow); border:1px solid var(--border);
  display:flex; align-items:center; gap:16px; transition:all .25s;
}
.stat-card:hover { transform:translateY(-3px); box-shadow:0 8px 25px rgba(15,23,42,.08); }
.stat-card .icon {
  width:52px; height:52px; border-radius:12px;
  display:flex; align-items:center; justify-content:center; font-size:20px; color:#fff; flex-shrink:0;
}
.stat-card .icon.blue { background:linear-gradient(135deg,#3b82f6,#2563eb); }
.stat-card .icon.green { background:linear-gradient(135deg,#10b981,#059669); }
.stat-card .icon.orange { background:linear-gradient(135deg,#f59e0b,#d97706); }
.stat-card .icon.red { background:linear-gradient(135deg,#ef4444,#dc2626); }
.stat-card .icon.purple { background:linear-gradient(135deg,#8b5cf6,#7c3aed); }
.stat-card .num { font-size:26px; font-weight:700; color:var(--primary); line-height:1.2; }
.stat-card .label { font-size:13px; color:var(--text-light); margin-top:2px; }
.stat-card .link { font-size:12px; color:var(--accent); margin-top:6px; display:inline-block; }

/* 表格 */
.data-table { background:#fff; border-radius:var(--radius); box-shadow:var(--shadow); border:1px solid var(--border); overflow:hidden; }
.data-table table { width:100%; border-collapse:collapse; }
.data-table th {
  background:#f8fafc; padding:14px 16px; text-align:left;
  font-size:12px; color:var(--text-light); font-weight:600; letter-spacing:.5px;
  border-bottom:1px solid var(--border);
}
.data-table td { padding:14px 16px; border-bottom:1px solid var(--border); font-size:14px; vertical-align:middle; }
.data-table tr:last-child td { border-bottom:none; }
.data-table tbody tr:hover td { background:#f8fafc; }
.table-actions { display:flex; gap:8px; }

.btn-sm {
  padding:6px 14px; border-radius:7px; font-size:12px; cursor:pointer;
  border:none; display:inline-flex; align-items:center; gap:5px; transition:all .2s; font-weight:500;
}
.btn-sm.edit { background:#eff6ff; color:var(--accent); }
.btn-sm.edit:hover { background:#dbeafe; }
.btn-sm.del { background:#fef2f2; color:var(--danger); }
.btn-sm.del:hover { background:#fee2e2; }
.btn-sm.view { background:#ecfdf5; color:var(--success); }
.btn-sm.view:hover { background:#d1fae5; }
.btn-sm.warn { background:#fffbeb; color:#d97706; }
.btn-sm.warn:hover { background:#fef3c7; }

/* 按钮 */
.btn-primary {
  padding:10px 22px; background:linear-gradient(135deg,var(--accent),#2563eb);
  color:#fff; border:none; border-radius:9px; cursor:pointer; font-size:14px;
  display:inline-flex; align-items:center; gap:6px; transition:all .2s; font-weight:500;
}
.btn-primary:hover { box-shadow:0 6px 16px rgba(59,130,246,.3); transform:translateY(-1px); }
.btn-secondary {
  padding:10px 22px; background:#fff; color:var(--text); border:1px solid var(--border);
  border-radius:9px; cursor:pointer; font-size:14px; display:inline-flex; align-items:center; gap:6px; transition:all .2s;
}
.btn-secondary:hover { background:var(--bg); border-color:var(--text-light); }
.btn-danger {
  padding:10px 22px; background:var(--danger); color:#fff; border:none;
  border-radius:9px; cursor:pointer; font-size:14px; transition:all .2s;
}
.btn-danger:hover { opacity:.85; }

/* 工具条 */
.table-toolbar { display:flex; justify-content:space-between; align-items:center; margin-bottom:18px; flex-wrap:wrap; gap:12px; }
.table-toolbar .info { color:var(--text-light); font-size:13px; }
.search-box { display:flex; align-items:center; gap:8px; }
.search-box input {
  padding:9px 14px; border:1px solid var(--border); border-radius:9px; font-size:13px; width:220px; transition:all .2s;
}
.search-box input:focus { outline:none; border-color:var(--accent); box-shadow:0 0 0 3px rgba(59,130,246,.1); }

/* 表单 */
.form-box { background:#fff; border-radius:var(--radius); box-shadow:var(--shadow); padding:28px; border:1px solid var(--border); }
.form-item { margin-bottom:22px; }
.form-item label { display:block; margin-bottom:8px; font-weight:500; font-size:14px; color:var(--text); }
.form-item label .req { color:var(--danger); margin-left:2px; }
.form-item .form-control {
  width:100%; padding:11px 14px; border:1px solid var(--border);
  border-radius:9px; font-size:14px; font-family:inherit; background:#fff; transition:all .2s;
}
.form-item .form-control:focus { outline:none; border-color:var(--accent); box-shadow:0 0 0 3px rgba(59,130,246,.1); }
.form-item textarea.form-control { min-height:140px; resize:vertical; }
.form-item select.form-control { cursor:pointer; }
.form-item .hint { font-size:12px; color:var(--text-light); margin-top:6px; }
.form-actions { margin-top:28px; padding-top:20px; border-top:1px solid var(--border); display:flex; gap:12px; }

/* 开关 */
.switch { position:relative; display:inline-block; width:44px; height:24px; }
.switch input { opacity:0; width:0; height:0; }
.switch .slider {
  position:absolute; cursor:pointer; top:0; left:0; right:0; bottom:0;
  background:#cbd5e1; border-radius:24px; transition:all .3s;
}
.switch .slider::before {
  content:''; position:absolute; width:18px; height:18px; border-radius:50%;
  left:3px; top:3px; background:#fff; transition:all .3s; box-shadow:0 1px 3px rgba(0,0,0,.2);
}
.switch input:checked + .slider { background:var(--success); }
.switch input:checked + .slider::before { transform:translateX(20px); }

/* 标签 */
.tag { padding:3px 12px; border-radius:20px; font-size:12px; font-weight:500; }
.tag.on { background:#ecfdf5; color:var(--success); }
.tag.off { background:#f1f5f9; color:var(--text-light); }
.tag.info { background:#eff6ff; color:var(--accent); }
.tag.warn { background:#fffbeb; color:#d97706; }

/* 提示 */
.alert { padding:13px 16px; border-radius:9px; margin-bottom:18px; font-size:14px; display:flex; align-items:center; gap:8px; }
.alert-success { background:#ecfdf5; color:#059669; border:1px solid #a7f3d0; }
.alert-error { background:#fef2f2; color:#dc2626; border:1px solid #fecaca; }
.alert-info { background:#eff6ff; color:#2563eb; border:1px solid #bfdbfe; }
.alert-warn { background:#fffbeb; color:#d97706; border:1px solid #fde68a; }

/* 分页 */
.pagination { margin-top:24px; text-align:center; }
.pagination a, .pagination span {
  display:inline-block; padding:8px 14px; margin:0 3px;
  border:1px solid var(--border); border-radius:8px; font-size:13px; color:var(--text); background:#fff; transition:all .2s;
}
.pagination a:hover { border-color:var(--accent); color:var(--accent); }
.pagination .current { background:var(--accent); color:#fff; border-color:var(--accent); }

/* ===== 弹窗 ===== */
.modal-mask {
  display:none; position:fixed; inset:0; background:rgba(15,23,42,.5);
  z-index:1000; align-items:flex-start; justify-content:center; padding:60px 20px;
  backdrop-filter:blur(2px); overflow-y:auto;
}
.modal-mask.show { display:flex; }
.modal {
  background:#fff; border-radius:14px; width:100%; max-width:560px;
  box-shadow:0 25px 60px rgba(0,0,0,.25); animation:modalIn .25s ease;
  overflow:hidden;
}
.modal.lg { max-width:760px; }
.modal.sm { max-width:420px; }
@keyframes modalIn { from { transform:translateY(20px); opacity:0; } to { transform:translateY(0); opacity:1; } }
.modal-head {
  padding:18px 24px; border-bottom:1px solid var(--border);
  display:flex; align-items:center; justify-content:space-between;
}
.modal-head h3 { font-size:16px; color:var(--primary); font-weight:600; }
.modal-head .close {
  width:32px; height:32px; border-radius:8px; border:none; background:var(--bg);
  color:var(--text-light); cursor:pointer; font-size:15px; transition:all .2s;
}
.modal-head .close:hover { background:#fee2e2; color:var(--danger); }
.modal-body { padding:24px; max-height:65vh; overflow-y:auto; }
.modal-foot { padding:16px 24px; border-top:1px solid var(--border); display:flex; justify-content:flex-end; gap:12px; background:#f8fafc; }

/* 权限选择 */
.perm-grid { display:grid; grid-template-columns:1fr 1fr; gap:10px; }
.perm-item {
  display:flex; align-items:center; gap:8px; padding:10px 14px;
  border:1px solid var(--border); border-radius:9px; cursor:pointer; transition:all .2s; font-size:13px;
}
.perm-item:hover { border-color:var(--accent); }
.perm-item input { accent-color:var(--accent); }

/* 模块开关行 */
.module-row {
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 0; border-bottom:1px solid var(--border);
}
.module-row:last-child { border-bottom:none; }
.module-row .m-name { font-size:15px; font-weight:500; color:var(--text); }
.module-row .m-desc { font-size:12px; color:var(--text-light); margin-top:3px; }

/* 响应式 */
@media (max-width:1024px) {
  .stat-cards { grid-template-columns:repeat(2,1fr); }
}
@media (max-width:768px) {
  .admin-sidebar { width:60px; }
  .sidebar-logo .logo-text, .sidebar-menu > a span, .menu-group-title span, .menu-group-title .arrow, .menu-sub a span { display:none; }
  .sidebar-menu > a, .menu-group-title, .menu-sub a { justify-content:center; padding:12px; }
  .admin-main { margin-left:60px; }
  .stat-cards { grid-template-columns:1fr; }
  .search-box input { width:150px; }
  .admin-content { padding:16px; }
}