:root{
  --primary:#1266F1;
  --primary-dark:#0D4EC2;
  --primary-tint:#EAF3FC;
  --sidebar-active-bg:#E8F1FD;
  --border:#E5E7EB;
  --text-dark:#111827;
  --text-muted:#6B7280;
  --text-faint:#9CA3AF;
  --accent:#F5A623;
  --bg-page:#F5F7FA;
  --success:#16A34A;
  --success-tint:#EAF7EE;
  --warn:#D97706;
  --warn-tint:#FEF3E2;
  --danger:#DC2626;
  --danger-tint:#FDECEC;
  --radius:10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  font-family:var(--font);
  background:var(--bg-page);
  color:var(--text-dark);
  font-size:14px;
  -webkit-font-smoothing:antialiased;
}
a{ color:var(--primary); text-decoration:none; }
a:hover{ text-decoration:underline; }

/* ---------- Topbar ---------- */
.topbar{
  background:#fff; border-bottom:1px solid var(--border);
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 24px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{
  width:34px; height:34px; border-radius:8px;
  background:linear-gradient(135deg,var(--primary),#4C8DF5);
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-weight:700; font-size:15px; flex-shrink:0;
}
.brand-text h1{ font-size:16.5px; margin:0; font-weight:700; color:var(--text-dark); line-height:1.2; }
.brand-text p{ margin:1px 0 0; font-size:12px; color:var(--text-muted); }
.topbar-actions{ display:flex; align-items:center; gap:10px; }
.topbar-user{ font-size:13px; color:var(--text-muted); margin-right:6px; text-align:right; }
.topbar-user b{ color:var(--text-dark); display:block; font-size:13.5px; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:6px;
  font-size:13px; font-weight:600; padding:8px 14px;
  border-radius:8px; cursor:pointer; border:1px solid transparent;
  white-space:nowrap;
}
.btn-outline{ background:#fff; border-color:var(--primary); color:var(--primary); }
.btn-outline:hover{ background:var(--primary-tint); text-decoration:none; }
.btn-primary{ background:var(--primary); color:#fff; }
.btn-primary:hover{ background:var(--primary-dark); text-decoration:none; color:#fff; }
.btn-danger-outline{ background:#fff; border-color:var(--danger); color:var(--danger); }
.btn-danger-outline:hover{ background:var(--danger-tint); text-decoration:none; }
.btn:disabled{ opacity:.5; cursor:not-allowed; }

/* ---------- Shell ---------- */
.shell{ display:flex; align-items:flex-start; min-height:calc(100vh - 65px); }

/* ---------- Sidebar ---------- */
.sidebar{
  width:236px; background:#fff; border-right:1px solid var(--border);
  padding:18px 12px; flex-shrink:0; min-height:calc(100vh - 65px);
}
.sidebar-section-label{
  font-size:11px; font-weight:700; letter-spacing:.04em; color:var(--text-faint);
  text-transform:uppercase; padding:12px 10px 6px;
}
.sidebar-section-label:first-child{ padding-top:2px; }
.nav-item{
  display:flex; align-items:center; gap:10px;
  padding:9px 10px; border-radius:8px; color:#374151;
  font-size:13.5px; font-weight:500; cursor:pointer; margin-bottom:2px;
  text-decoration:none;
}
.nav-item:hover{ background:#F3F6FB; text-decoration:none; }
.nav-item.active{ background:var(--sidebar-active-bg); color:var(--primary); font-weight:700; }
.nav-item svg{ flex-shrink:0; stroke:#6B7280; }
.nav-item.active svg{ stroke:var(--primary); }
.nav-badge{
  margin-left:auto; background:#F3F4F6; color:var(--text-muted);
  font-size:10.5px; font-weight:700; padding:1px 7px; border-radius:999px;
}
.nav-item.active .nav-badge{ background:#fff; color:var(--primary); }

/* ---------- Main ---------- */
.main{ flex:1; padding:24px 28px; min-width:0; }
.page-head{ display:flex; align-items:flex-end; justify-content:space-between; margin-bottom:18px; flex-wrap:wrap; gap:10px; }
.page-head h2{ margin:0 0 3px; font-size:20px; font-weight:700; }
.page-head p{ margin:0; color:var(--text-muted); font-size:13px; }
.crumb{ font-size:12px; color:var(--text-faint); margin-bottom:4px; }

/* ---------- Stat cards ---------- */
.stat-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-bottom:22px; }
.stat-card{ background:#fff; border:1px solid var(--border); border-radius:var(--radius); padding:16px 18px; }
.stat-card .label{ font-size:11.5px; font-weight:700; color:var(--text-muted); text-transform:uppercase; letter-spacing:.03em; }
.stat-card .value{ font-size:26px; font-weight:700; margin:6px 0 2px; color:var(--text-dark); }
.stat-card .sub{ font-size:12px; color:var(--text-faint); }

/* ---------- Cards & tables ---------- */
.card{ background:#fff; border:1px solid var(--border); border-radius:var(--radius); padding:18px 20px; margin-bottom:20px; }
.card h3{ margin:0 0 14px; font-size:14.5px; font-weight:700; }
.card h3 .muted{ font-weight:500; color:var(--text-muted); font-size:12px; }

table{ width:100%; border-collapse:collapse; }
thead th{
  text-align:left; font-size:11px; text-transform:uppercase; letter-spacing:.03em;
  color:var(--text-faint); font-weight:700; padding:8px 10px; border-bottom:1px solid var(--border);
}
tbody td{ padding:11px 10px; border-bottom:1px solid #F1F3F6; font-size:13px; vertical-align:middle; }
tbody tr:last-child td{ border-bottom:none; }
tbody tr:hover{ background:#FAFBFD; }

.pill{ display:inline-flex; align-items:center; gap:5px; font-size:11.5px; font-weight:700; padding:3px 9px; border-radius:999px; }
.pill-green{ background:var(--success-tint); color:var(--success); }
.pill-blue{ background:var(--primary-tint); color:var(--primary); }
.pill-amber{ background:var(--warn-tint); color:var(--warn); }
.pill-gray{ background:#F3F4F6; color:var(--text-muted); }
.pill-red{ background:var(--danger-tint); color:var(--danger); }

.empty-state{ text-align:center; padding:48px 20px; color:var(--text-muted); }
.empty-state svg{ stroke:var(--text-faint); margin-bottom:12px; }
.empty-state h4{ margin:0 0 6px; color:var(--text-dark); font-size:15px; }

/* ---------- Forms ---------- */
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:16px 20px; }
.form-grid .full{ grid-column:1 / -1; }
.field label{ display:block; font-size:12.5px; font-weight:600; color:#374151; margin-bottom:5px; }
.field .hint{ font-size:11.5px; color:var(--text-faint); margin-top:4px; }
.field input[type=text], .field input[type=email], .field input[type=tel],
.field input[type=url], .field input[type=password], .field select, .field textarea{
  width:100%; border:1px solid var(--border); border-radius:8px; padding:9px 11px;
  font-size:13.5px; font-family:var(--font); color:var(--text-dark); background:#fff;
}
.field textarea{ resize:vertical; min-height:90px; }
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none; border-color:var(--primary); box-shadow:0 0 0 3px var(--primary-tint);
}
.field-check{ display:flex; align-items:center; gap:8px; }
.field-check input{ width:16px; height:16px; }
.field-check label{ font-size:13px; font-weight:500; color:#374151; margin:0; }
.form-actions{ display:flex; gap:10px; margin-top:20px; }
.validation-summary{ background:var(--danger-tint); color:var(--danger); border-radius:8px; padding:10px 14px; margin-bottom:16px; font-size:13px; }
.validation-summary ul{ margin:4px 0 0; padding-left:18px; }
.field-validation-error{ color:var(--danger); font-size:12px; margin-top:4px; display:block; }
.input-validation-error{ border-color:var(--danger) !important; }

.alert{ border-radius:8px; padding:11px 15px; font-size:13px; margin-bottom:18px; }
.alert-success{ background:var(--success-tint); color:var(--success); }

.kv-row{ display:flex; justify-content:space-between; padding:11px 0; border-bottom:1px solid #F1F3F6; font-size:13.5px; }
.kv-row:last-child{ border-bottom:none; }
.kv-row .k{ color:var(--text-muted); }
.kv-row .v{ font-weight:600; color:var(--text-dark); text-align:right; }

.footer-note{ text-align:center; color:var(--text-faint); font-size:11.5px; margin-top:26px; padding-bottom:20px; }

/* ---------- Bell notification ---------- */
.bell-wrap{ position:relative; }
.bell-btn{
  position:relative; display:flex; align-items:center; justify-content:center;
  width:36px; height:36px; border-radius:8px; border:1px solid var(--border);
  background:#fff; cursor:pointer; color:var(--text-dark); flex-shrink:0;
}
.bell-btn:hover{ background:var(--primary-tint); border-color:var(--primary); }
.bell-btn svg{ stroke:#6B7280; }
.bell-btn:hover svg{ stroke:var(--primary); }
.bell-badge{
  position:absolute; top:-5px; right:-5px;
  background:var(--danger); color:#fff; font-size:9.5px; font-weight:700;
  min-width:16px; height:16px; border-radius:999px; line-height:16px;
  text-align:center; padding:0 4px;
}
.bell-dropdown{
  display:none; position:absolute; top:calc(100% + 8px); right:0;
  width:320px; background:#fff; border:1px solid var(--border);
  border-radius:10px; z-index:900; overflow:hidden;
}
.bell-dropdown.open{ display:block; }
.bell-header{
  display:flex; align-items:center; justify-content:space-between;
  padding:11px 14px; border-bottom:1px solid var(--border);
  font-size:13px; font-weight:700; color:var(--text-dark);
}
.bell-mark-all{
  background:none; border:none; cursor:pointer; color:var(--primary);
  font-size:12px; font-weight:600; padding:0;
}
.bell-mark-all:hover{ text-decoration:underline; }
.bell-list{ max-height:340px; overflow-y:auto; }
.bell-empty{ padding:20px 14px; font-size:13px; color:var(--text-muted); text-align:center; }
.bell-item{
  padding:11px 14px; border-bottom:1px solid #F1F3F6; cursor:pointer;
  background:#fff; transition:background .1s;
}
.bell-item:last-child{ border-bottom:none; }
.bell-item:hover{ background:var(--primary-tint); }
.bell-item-read{ background:#fafbfd; opacity:.7; cursor:default; }
.bell-item-read:hover{ background:#fafbfd; }
.bell-item-title{ font-size:13px; font-weight:600; color:var(--text-dark); }
.bell-item-read .bell-item-title{ font-weight:500; color:var(--text-muted); }
.bell-item-body{ font-size:12px; color:var(--text-muted); margin-top:2px; line-height:1.5; }
.bell-item-date{ font-size:11px; color:var(--text-faint); margin-top:4px; }

/* ---------- Login page ---------- */
.login-shell{
  min-height:100vh; display:flex; align-items:center; justify-content:center;
  background:linear-gradient(180deg,#F5F7FA 0%, #EAF3FC 100%);
  padding:20px;
}
.login-card{
  width:100%; max-width:380px; background:#fff; border:1px solid var(--border);
  border-radius:14px; padding:32px 30px; box-shadow:0 10px 30px rgba(17,24,39,.06);
}
.login-brand{ display:flex; align-items:center; gap:10px; margin-bottom:22px; }
.login-brand h1{ font-size:16px; margin:0; font-weight:700; }
.login-brand p{ font-size:12px; margin:1px 0 0; color:var(--text-muted); }
.login-card h2{ font-size:19px; margin:0 0 4px; }
.login-card > p{ font-size:13px; color:var(--text-muted); margin:0 0 22px; }
.demo-creds{
  margin-top:18px; background:var(--primary-tint); border-radius:8px; padding:10px 12px;
  font-size:11.5px; color:var(--primary-dark); line-height:1.6;
}

::-webkit-scrollbar{ height:8px; width:8px; }
::-webkit-scrollbar-thumb{ background:#D9DEE6; border-radius:6px; }

@media (max-width: 900px){
  .shell{ flex-direction:column; }
  .sidebar{ width:100%; min-height:auto; display:flex; flex-wrap:wrap; gap:4px; }
  .sidebar-section-label{ display:none; }
  .stat-grid{ grid-template-columns:1fr; }
  .form-grid{ grid-template-columns:1fr; }
}