@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root{
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --bg:#f4f6fb;
  --surface:#ffffff;
  --text:#1e293b;
  --text-muted:#64748b;
  --border:#e2e8f0;
  --green:#16a34a; --green-bg:#dcfce7; --green-text:#166534;
  --amber:#d97706; --amber-bg:#fef3c7; --amber-text:#92400e;
  --red:#dc2626;   --red-bg:#fee2e2;   --red-text:#991b1b;
  --blue-bg:#dbeafe; --blue-text:#1e40af;
  --gray-bg:#f1f5f9; --gray-text:#475569;
  --radius:10px;
}
*{box-sizing:border-box;}
body{
  margin:0; font-family:'Inter',sans-serif; background:var(--bg); color:var(--text);
  font-size:14px; line-height:1.6;
}
a{color:var(--primary); text-decoration:none;}
a:hover{text-decoration:underline;}

/* Layout */
.app{display:flex; min-height:100vh;}
.sidebar{
  width:250px; background:#0f172a; color:#cbd5e1; flex-shrink:0;
  display:flex; flex-direction:column; position:sticky; top:0; height:100vh; overflow-y:auto;
}
.sidebar .brand{padding:20px; font-weight:700; color:#fff; font-size:15px; border-bottom:1px solid #1e293b;}
.sidebar .brand small{display:block; font-weight:400; color:#94a3b8; font-size:11px; margin-top:4px;}
.sidebar nav{flex:1; padding:12px 0;}
.sidebar nav a{
  display:flex; align-items:center; gap:10px; padding:11px 20px; color:#cbd5e1; font-size:13.5px; font-weight:500;
}
.sidebar nav a:hover{background:#1e293b; text-decoration:none; color:#fff;}
.sidebar nav a.active{background:var(--primary); color:#fff;}
.sidebar .sidebar-footer{padding:16px 20px; border-top:1px solid #1e293b; font-size:12px; color:#94a3b8;}

.main{flex:1; min-width:0; display:flex; flex-direction:column;}
.topbar{
  background:var(--surface); border-bottom:1px solid var(--border); padding:14px 24px;
  display:flex; justify-content:space-between; align-items:center; position:sticky; top:0; z-index:10;
}
.topbar h1{font-size:17px; margin:0; font-weight:600;}
.topbar .user-info{display:flex; align-items:center; gap:12px; font-size:13px; color:var(--text-muted);}
.topbar .user-info strong{color:var(--text);}
.content{padding:24px; flex:1;}

/* Card */
.card{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:20px; margin-bottom:20px;}
.card-header{display:flex; justify-content:space-between; align-items:center; margin-bottom:16px;}
.card-header h2{font-size:15px; margin:0; font-weight:600;}

/* Stat cards */
.stat-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(190px,1fr)); gap:16px; margin-bottom:20px;}
.stat-card{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:18px;}
.stat-card .stat-label{font-size:12.5px; color:var(--text-muted); margin-bottom:6px;}
.stat-card .stat-value{font-size:26px; font-weight:700;}

/* Buttons */
.btn{
  display:inline-flex; align-items:center; gap:6px; padding:9px 16px; border-radius:8px; border:1px solid transparent;
  font-size:13.5px; font-weight:500; cursor:pointer; background:var(--primary); color:#fff;
}
.btn:hover{background:var(--primary-dark); text-decoration:none; color:#fff;}
.btn-secondary{background:var(--surface); color:var(--text); border-color:var(--border);}
.btn-secondary:hover{background:var(--gray-bg); color:var(--text);}
.btn-danger{background:var(--red); color:#fff;}
.btn-success{background:var(--green); color:#fff;}
.btn-sm{padding:6px 12px; font-size:12.5px;}
.btn:disabled{opacity:.5; cursor:not-allowed;}

/* Forms */
label{display:block; font-size:13px; font-weight:500; margin-bottom:6px;}
input[type=text], input[type=password], input[type=date], input[type=number], input[type=email],
select, textarea{
  width:100%; padding:9px 12px; border:1px solid var(--border); border-radius:8px; font-size:13.5px;
  font-family:inherit; background:#fff; color:var(--text);
}
input:focus, select:focus, textarea:focus{outline:none; border-color:var(--primary); box-shadow:0 0 0 3px rgba(37,99,235,.12);}
.form-group{margin-bottom:16px;}
.form-row{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:16px;}
.hint{font-size:12px; color:var(--text-muted); margin-top:4px;}

/* Table */
table{width:100%; border-collapse:collapse; font-size:13px;}
th, td{padding:10px 12px; text-align:left; border-bottom:1px solid var(--border);}
th{background:var(--gray-bg); font-weight:600; color:var(--text-muted); font-size:12px; text-transform:uppercase; letter-spacing:.02em;}
tr:hover td{background:#fafbfc;}
.table-wrap{overflow-x:auto;}

/* Badge */
.badge{display:inline-block; padding:3px 10px; border-radius:999px; font-size:11.5px; font-weight:600;}
.badge-gray{background:var(--gray-bg); color:var(--gray-text);}
.badge-amber{background:var(--amber-bg); color:var(--amber-text);}
.badge-blue{background:var(--blue-bg); color:var(--blue-text);}
.badge-red{background:var(--red-bg); color:var(--red-text);}
.badge-green{background:var(--green-bg); color:var(--green-text);}

/* Alert */
.alert{padding:12px 16px; border-radius:8px; margin-bottom:16px; font-size:13.5px;}
.alert-success{background:var(--green-bg); color:var(--green-text);}
.alert-error{background:var(--red-bg); color:var(--red-text);}
.alert-info{background:var(--blue-bg); color:var(--blue-text);}

/* Tabs */
.tabs{display:flex; gap:4px; border-bottom:1px solid var(--border); margin-bottom:20px; flex-wrap:wrap;}
.tab-btn{
  padding:10px 16px; font-size:13px; font-weight:500; color:var(--text-muted); background:none; border:none;
  border-bottom:2px solid transparent; cursor:pointer;
}
.tab-btn.active{color:var(--primary); border-bottom-color:var(--primary);}
.tab-panel{display:none;}
.tab-panel.active{display:block;}

/* Empty state */
.empty-state{text-align:center; padding:48px 20px; color:var(--text-muted);}

/* Login page */
.login-page{min-height:100vh; display:flex; align-items:center; justify-content:center; background:linear-gradient(135deg,#0f172a,#1e293b);}
.login-card{background:#fff; padding:36px; border-radius:14px; width:100%; max-width:380px; box-shadow:0 20px 40px rgba(0,0,0,.2);}
.login-card h1{font-size:18px; text-align:center; margin-bottom:4px;}
.login-card p.subtitle{text-align:center; color:var(--text-muted); font-size:13px; margin-bottom:24px;}

/* Print */
@media print{
  .sidebar, .topbar, .no-print, .btn{display:none !important;}
  .main{width:100%;}
  .content{padding:0;}
  body{background:#fff;}
  .card{border:none; box-shadow:none; padding:0;}
}

.pagination{display:flex; gap:6px; margin-top:16px;}
.pagination a, .pagination span{padding:6px 12px; border:1px solid var(--border); border-radius:6px; font-size:12.5px;}
.pagination .current{background:var(--primary); color:#fff; border-color:var(--primary);}

.toolbar{display:flex; justify-content:space-between; align-items:center; gap:12px; margin-bottom:16px; flex-wrap:wrap;}
.toolbar .filters{display:flex; gap:8px; flex-wrap:wrap;}
.toolbar .filters select, .toolbar .filters input{width:auto; min-width:140px;}

.grid-2{display:grid; grid-template-columns:1fr 1fr; gap:20px;}
@media (max-width:900px){ .grid-2{grid-template-columns:1fr;} .app{flex-direction:column;} .sidebar{width:100%; height:auto; position:static;} }