:root{
  --primary:#2c5f8a;
  --primary-dark:#1e4666;
  --sidebar-bg:#1e2a38;
  --sidebar-active:#2c5f8a;
  --bg:#f4f6f9;
  --border:#dde3ea;
  --success:#1e8a4c;
  --danger:#c0392b;
  --warning:#b8860b;
  --text:#2b2f36;
}
*{box-sizing:border-box;}
body{margin:0;font-family:'Segoe UI',Arial,sans-serif;background:var(--bg);color:var(--text);}

/* ---------- Login ---------- */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#1e4666,#2c5f8a);}
.login-box{background:#fff;padding:40px;border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.2);width:100%;max-width:380px;}
.login-header{text-align:center;margin-bottom:24px;}
.login-header h1{margin:0;color:var(--primary-dark);font-size:26px;}
.login-header p{color:#777;margin:6px 0 0;font-size:14px;}
.login-footer{text-align:center;color:#999;font-size:12px;margin-top:20px;}

/* ---------- Layout ---------- */
.app-wrapper{display:flex;min-height:100vh;}
.app-sidebar{width:230px;background:var(--sidebar-bg);color:#cfd8e3;flex-shrink:0;transition:margin .2s;}
.sidebar-brand{display:flex;align-items:center;gap:10px;padding:20px;font-size:18px;font-weight:600;color:#fff;border-bottom:1px solid rgba(255,255,255,.1);}
.sidebar-nav{display:flex;flex-direction:column;padding:10px 0;}
.sidebar-nav a{display:flex;align-items:center;gap:10px;padding:12px 20px;color:#cfd8e3;text-decoration:none;font-size:14px;}
.sidebar-nav a:hover{background:rgba(255,255,255,.06);color:#fff;}
.sidebar-nav a.active{background:var(--sidebar-active);color:#fff;border-left:4px solid #fff;}
.app-content{flex:1;display:flex;flex-direction:column;min-width:0;}
.app-topbar{display:flex;align-items:center;gap:16px;background:#fff;padding:14px 24px;border-bottom:1px solid var(--border);}
.app-topbar h1{font-size:19px;margin:0;flex:1;}
.topbar-user{display:flex;align-items:center;gap:12px;font-size:14px;}
.app-main{padding:24px;flex:1;}
.app-footer{padding:14px 24px;text-align:center;color:#999;font-size:12px;border-top:1px solid var(--border);background:#fff;}
.btn-icon{background:none;border:none;font-size:20px;cursor:pointer;display:none;}

@media (max-width:900px){
  .app-sidebar{position:fixed;z-index:50;height:100%;margin-left:-230px;}
  .app-sidebar.show{margin-left:0;}
  .btn-icon{display:block;}
}

/* ---------- Cards / Panels ---------- */
.card{background:#fff;border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:20px;}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.card-header h2{font-size:16px;margin:0;}

/* ---------- Forms ---------- */
.form-group{margin-bottom:16px;}
.form-group label{display:block;margin-bottom:6px;font-size:13px;font-weight:600;color:#444;}
.form-control{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px;}
.form-control:focus{outline:none;border-color:var(--primary);}
.form-row{display:flex;gap:16px;flex-wrap:wrap;}
.form-row .form-group{flex:1;min-width:200px;}
textarea.form-control{resize:vertical;min-height:70px;}
.form-hint{font-size:12px;color:#888;margin-top:4px;}

/* ---------- Buttons ---------- */
.btn{display:inline-block;padding:9px 18px;border-radius:6px;border:1px solid transparent;font-size:14px;cursor:pointer;text-decoration:none;font-weight:500;}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);}
.btn-success{background:var(--success);color:#fff;}
.btn-danger{background:var(--danger);color:#fff;}
.btn-outline{background:#fff;border-color:var(--border);color:var(--text);}
.btn-outline:hover{background:#f0f2f5;}
.btn-sm{padding:5px 12px;font-size:12px;}
.btn-block{width:100%;}

/* ---------- Alerts ---------- */
.alert{padding:12px 16px;border-radius:6px;margin-bottom:18px;font-size:14px;}
.alert-success{background:#e5f6ea;color:#1e8a4c;border:1px solid #b8e6c6;}
.alert-danger{background:#fdecea;color:#c0392b;border:1px solid #f5c6c1;}
.alert-warning{background:#fff8e1;color:#946200;border:1px solid #ffe6a1;}

/* ---------- Tables ---------- */
.table-wrap{overflow-x:auto;}
table.data-table{width:100%;border-collapse:collapse;font-size:14px;}
table.data-table th,table.data-table td{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left;}
table.data-table th{background:#f7f9fb;font-weight:600;color:#444;}
table.data-table tr:hover td{background:#fafbfc;}
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:600;}
.badge-success{background:#e5f6ea;color:#1e8a4c;}
.badge-secondary{background:#eee;color:#666;}
.action-btns{display:flex;gap:6px;}

/* ---------- Stat boxes ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:20px;}
.stat-box{background:#fff;border:1px solid var(--border);border-radius:10px;padding:20px;}
.stat-box .num{font-size:28px;font-weight:700;color:var(--primary-dark);}
.stat-box .label{color:#777;font-size:13px;margin-top:4px;}

/* ---------- Misc ---------- */
.upload-preview{max-width:100px;max-height:100px;border:1px solid var(--border);border-radius:6px;padding:4px;background:#fff;}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);display:none;align-items:center;justify-content:center;z-index:100;}
.modal-overlay.show{display:flex;}
.modal-box{background:#fff;border-radius:10px;padding:24px;max-width:480px;width:90%;}
.text-muted{color:#888;}
.mb-0{margin-bottom:0;}