:root{--primary:#6366f1;--primary-dark:#4f46e5;--secondary:#8b5cf6;--success:#10b981;--warning:#f59e0b;--danger:#ef4444;--dark:#1e293b;--muted:#64748b;--border:#e2e8f0;--bg:#f1f5f9;--sidebar:#0f172a;--sw:256px;}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--dark);min-height:100vh;font-size:14px;line-height:1.5;}
.layout{display:flex;min-height:100vh;}
.sidebar{width:var(--sw);background:var(--sidebar);position:fixed;top:0;left:0;bottom:0;display:flex;flex-direction:column;z-index:200;transition:transform .3s;overflow-y:auto;}
.sidebar-brand{padding:18px 14px;border-bottom:1px solid rgba(255,255,255,.06);display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-icon{width:36px;height:36px;border-radius:9px;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0;}
.brand-name{color:#fff;font-size:14px;font-weight:700;}.brand-sub{color:rgba(255,255,255,.3);font-size:10px;margin-top:1px;}
.sidebar-nav{flex:1;padding:10px 10px;}.nav-group{margin-bottom:18px;}
.nav-group-label{color:rgba(255,255,255,.28);font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:1.1px;padding:0 8px;margin-bottom:5px;}
.nav-link{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:7px;text-decoration:none;color:rgba(255,255,255,.5);font-size:13px;font-weight:500;transition:all .15s;margin-bottom:1px;}
.nav-link:hover{background:rgba(255,255,255,.07);color:rgba(255,255,255,.9);}
.nav-link.active{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;box-shadow:0 2px 8px rgba(99,102,241,.4);}
.nav-icon{font-size:15px;width:17px;text-align:center;flex-shrink:0;}
.sidebar-footer{padding:10px;border-top:1px solid rgba(255,255,255,.06);flex-shrink:0;}
.main{margin-left:var(--sw);flex:1;display:flex;flex-direction:column;min-height:100vh;}
.topbar{background:#fff;border-bottom:1px solid var(--border);padding:0 26px;height:58px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100;}
.topbar-title{font-size:16px;font-weight:700;color:var(--dark);}
.topbar-right{display:flex;align-items:center;gap:8px;}
.page-body{padding:26px;flex:1;}
.card{background:#fff;border-radius:14px;padding:22px;border:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,.04);margin-bottom:18px;}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.card-title{font-size:14px;font-weight:700;color:var(--dark);}
.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:22px;}
.stat-card{background:#fff;border:1px solid var(--border);border-radius:13px;padding:16px 18px;box-shadow:0 1px 3px rgba(0,0,0,.04);}
.stat-icon{width:38px;height:38px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:10px;}
.stat-val{font-size:24px;font-weight:800;color:var(--dark);}
.stat-lbl{font-size:11px;color:var(--muted);font-weight:500;margin-top:2px;text-transform:uppercase;letter-spacing:.4px;}
h1{font-size:22px;font-weight:800;color:var(--dark);}
h2{font-size:16px;font-weight:700;color:var(--dark);margin-bottom:12px;}
h3{font-size:14px;font-weight:700;color:var(--dark);}
.btn{display:inline-flex;align-items:center;gap:5px;padding:8px 14px;border-radius:8px;font-size:13px;font-weight:600;text-decoration:none;cursor:pointer;border:none;outline:none;transition:all .15s;white-space:nowrap;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;box-shadow:0 1px 4px rgba(99,102,241,.3);margin:2px;}
.btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(99,102,241,.4);}
.btn:active{transform:none;}
.btn-success{background:var(--success);box-shadow:0 1px 4px rgba(16,185,129,.3);}
.btn-success:hover{box-shadow:0 4px 12px rgba(16,185,129,.4);}
.btn-danger{background:var(--danger);box-shadow:0 1px 4px rgba(239,68,68,.3);}
.btn-danger:hover{box-shadow:0 4px 12px rgba(239,68,68,.4);}
.btn-warning{background:var(--warning);color:#fff;}
.btn-outline{background:transparent;color:var(--primary);border:1.5px solid var(--border);box-shadow:none;}
.btn-outline:hover{border-color:var(--primary);background:#f5f3ff;transform:none;box-shadow:none;}
.btn-ghost{background:transparent;color:var(--muted);box-shadow:none;}
.btn-ghost:hover{background:var(--bg);color:var(--dark);transform:none;box-shadow:none;}
.btn-sm{padding:5px 11px;font-size:12px;border-radius:6px;margin:2px;}
table{width:100%;border-collapse:collapse;}
thead th{background:var(--bg);color:var(--muted);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;padding:9px 13px;text-align:left;border-bottom:1px solid var(--border);}
tbody td{padding:11px 13px;border-bottom:1px solid var(--border);color:var(--dark);}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover td{background:#fafaff;}
.form-group{margin-bottom:14px;}
.form-label{display:block;font-size:12px;font-weight:600;color:var(--dark);margin-bottom:4px;}
input[type=text],input[type=number],input[type=date],input[type=time],input[type=password],input[type=email],select,textarea{width:100%;padding:8px 11px;border:1.5px solid var(--border);border-radius:8px;font-size:13px;color:var(--dark);background:#fff;transition:border-color .15s;outline:none;font-family:inherit;margin:0;}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(99,102,241,.1);}
.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:600;}
.badge-success{background:#d1fae5;color:#065f46;}.badge-danger{background:#fee2e2;color:#991b1b;}
.badge-warning{background:#fef3c7;color:#92400e;}.badge-info{background:#e0e7ff;color:#3730a3;}
.badge-muted{background:var(--bg);color:var(--muted);}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px;}
.three-col{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px;}
.container{max-width:1100px;margin:0 auto;padding:24px;}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;}
.alert{padding:12px 16px;border-radius:9px;margin-bottom:14px;font-size:13px;font-weight:500;}
.alert-warning{background:#fef3c7;color:#92400e;border:1px solid #fde68a;}
.alert-success{background:#d1fae5;color:#065f46;border:1px solid #a7f3d0;}
.alert-danger{background:#fee2e2;color:#991b1b;border:1px solid #fca5a5;}
.alert-info{background:#e0e7ff;color:#3730a3;border:1px solid #c7d2fe;}
.login-wrap{min-height:100vh;background:var(--bg);display:flex;align-items:center;justify-content:center;padding:24px;}
.login-card{background:#fff;border-radius:18px;padding:36px;width:100%;max-width:390px;border:1px solid var(--border);box-shadow:0 8px 32px rgba(0,0,0,.08);}
.login-logo{width:52px;height:52px;border-radius:13px;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;font-size:24px;margin:0 auto 18px;}
.menu-btn{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--dark);padding:4px 8px;line-height:1;z-index:300;}
.mobile-nav{display:flex;flex-direction:column;overflow-y:auto;position:fixed;top:0;left:0;width:100%;height:100%;background:var(--sidebar);z-index:9999;visibility:hidden;pointer-events:none;}
.mobile-nav.open{visibility:visible;pointer-events:auto;}
.mobile-nav-header{display:flex;align-items:center;justify-content:space-between;padding:20px 20px 16px;border-bottom:1px solid rgba(255,255,255,.1);flex-shrink:0;}
.mobile-nav-title{color:#fff;font-size:17px;font-weight:700;}
.mobile-nav-close{background:none;border:none;color:rgba(255,255,255,.7);font-size:32px;cursor:pointer;padding:0;line-height:1;}
.mobile-nav-links{padding:16px 12px;flex:1;overflow-y:auto;}
.mobile-nav-links a{display:flex;align-items:center;gap:14px;padding:15px 16px;border-radius:12px;text-decoration:none;color:rgba(255,255,255,.6);font-size:16px;font-weight:500;margin-bottom:4px;}
.mobile-nav-links a.active{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;}
.mobile-nav-icon{font-size:20px;width:24px;text-align:center;}
.sidebar-overlay{display:none;}
@media(max-width:768px){
  .two-col,.three-col,.grid{grid-template-columns:1fr;}
  h1{font-size:18px;}
  .page-body{padding:14px;}
  .topbar{padding:0 14px;}
  .menu-btn{display:block;}
  .main{margin-left:0;}
  .sidebar{display:none;}
}
.toast-container{position:fixed;bottom:24px;right:24px;z-index:9999;display:flex;flex-direction:column;gap:10px;pointer-events:none;}
.toast{background:#1e293b;color:#fff;padding:12px 18px;border-radius:10px;font-size:13px;font-weight:500;box-shadow:0 4px 16px rgba(0,0,0,.18);display:flex;align-items:center;gap:10px;opacity:1;transform:translateY(0);transition:opacity .4s ease,transform .4s ease;pointer-events:auto;}
.toast.toast-success{border-left:3px solid #10b981;}.toast.toast-error{border-left:3px solid #ef4444;}.toast.toast-info{border-left:3px solid #6366f1;}
.toast.hiding{opacity:0;transform:translateY(8px);}
@media(max-width:600px){.toast-container{bottom:16px;right:16px;left:16px;}.toast{max-width:100%;}}
.spinner{display:inline-block;width:14px;height:14px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;vertical-align:middle;}
@keyframes spin{to{transform:rotate(360deg);}}
.empty-state{text-align:center;padding:48px 24px;color:var(--muted);}
.empty-state-icon{font-size:48px;margin-bottom:14px;opacity:.6;}
.empty-state h3{font-size:15px;font-weight:700;color:var(--dark);margin-bottom:6px;}
.empty-state p{font-size:13px;max-width:320px;margin:0 auto 18px;}