:root{
  --primary:#2c5aa0;--primary-dark:#1e3a5f;--primary-light:#dbeafe;
  --success:#10b981;--warning:#f59e0b;--danger:#ef4444;--info:#3b82f6;
  --bg:#f5f7fb;--surface:#fff;--border:#e5e7eb;--text:#1f2937;--muted:#6b7280;
  --sidebar-width:240px;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px}
a{text-decoration:none}

/* Layout */
.app-shell{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-width);background:linear-gradient(180deg,#1e3a5f 0%,#0f1e3a 100%);color:#cbd5e1;display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:transform .25s}
.main-area{margin-left:var(--sidebar-width);flex:1;display:flex;flex-direction:column;min-width:0}
@media(max-width:768px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .main-area{margin-left:0}
}

/* Sidebar brand */
.sidebar-brand{padding:1.25rem 1rem;font-size:1.05rem;font-weight:700;color:#fff;display:flex;align-items:center;gap:.65rem;border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar-brand i{color:#60a5fa;font-size:1.4rem}

/* Sidebar nav */
.sidebar-nav{flex:1;padding:.5rem 0;overflow-y:auto}
.nav-header{padding:1rem .85rem .35rem;font-size:.7rem;font-weight:700;color:#64748b;text-transform:uppercase;letter-spacing:.05em}
.sidebar-nav .nav-link{display:flex;align-items:center;gap:.75rem;padding:.55rem 1rem;color:#cbd5e1;border-left:3px solid transparent;font-size:.875rem}
.sidebar-nav .nav-link:hover{background:rgba(255,255,255,.05);color:#fff}
.sidebar-nav .nav-link.active{background:rgba(96,165,250,.15);color:#fff;border-left-color:#60a5fa}
.sidebar-nav .nav-link i{width:18px;font-size:1rem}
.sidebar-nav .nav-section{padding:.85rem 1rem .35rem;color:#64748b;font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;font-weight:700}
.sidebar-footer{padding:.75rem 1rem;border-top:1px solid rgba(255,255,255,.08);color:#64748b;font-size:.7rem}

/* Topbar */
.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:0 1.25rem;height:60px;display:flex;align-items:center;gap:1rem;position:sticky;top:0;z-index:50}
.page-title{font-size:1.1rem;font-weight:600;margin:0;flex:1}
.topbar-right{display:flex;align-items:center;gap:.25rem}
.user-avatar{width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:600;font-size:.8rem}

/* Content */
.content{padding:1.5rem;flex:1}

/* Cards */
.card{border:none;box-shadow:0 1px 3px rgba(0,0,0,.05);border-radius:8px;margin-bottom:1rem}
.card-header{background:var(--surface);border-bottom:1px solid var(--border);font-weight:600;padding:.85rem 1rem;display:flex;align-items:center;justify-content:space-between}
.card-body{padding:1rem}

/* KPI cards */
.kpi-card{background:var(--surface);border-radius:8px;padding:1.25rem;display:flex;align-items:center;gap:1rem;box-shadow:0 1px 3px rgba(0,0,0,.05);height:100%}
.kpi-icon{width:48px;height:48px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;flex-shrink:0}
.kpi-icon.bg-primary-soft{background:#dbeafe;color:#1e40af}
.kpi-icon.bg-success-soft{background:#d1fae5;color:#065f46}
.kpi-icon.bg-warning-soft{background:#fef3c7;color:#92400e}
.kpi-icon.bg-danger-soft{background:#fee2e2;color:#991b1b}
.kpi-icon.bg-info-soft{background:#cffafe;color:#155e75}
.kpi-label{color:var(--muted);font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.03em;margin:0}
.kpi-value{font-size:1.35rem;font-weight:700;margin:0;color:var(--text)}
.kpi-sub{font-size:.7rem;color:var(--muted)}

/* Tables */
.table{margin:0;font-size:.875rem}
.table thead th{background:#f8fafc;border-bottom:2px solid var(--border);font-size:.75rem;text-transform:uppercase;color:var(--muted);font-weight:600;letter-spacing:.03em}
.table tbody tr:hover{background:#f8fafc}
.table td{vertical-align:middle}

/* Buttons */
.btn{font-weight:500;font-size:.875rem}
.btn-primary{background:var(--primary);border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark)}

/* Forms */
.form-label{font-weight:500;font-size:.85rem;margin-bottom:.3rem}
.form-control,.form-select{font-size:.875rem}

/* Badges */
.badge{font-weight:500;padding:.35em .65em}

/* Login */
.login-page{min-height:100vh;background:linear-gradient(135deg,#1e3a5f 0%,#0f172a 100%);display:flex;align-items:center;justify-content:center;padding:1rem}
.login-box{background:#fff;border-radius:12px;padding:2.5rem;width:100%;max-width:400px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.login-brand{text-align:center;margin-bottom:1.5rem}
.login-brand i{font-size:2.5rem;color:var(--primary)}
.login-brand h1{font-size:1.4rem;font-weight:700;margin-top:.5rem}

/* Calendar tweaks */
.fc{font-size:.85rem}
.fc-toolbar-title{font-size:1.1rem!important}

/* Empty state */
.empty-state{text-align:center;padding:3rem 1rem;color:var(--muted)}
.empty-state i{font-size:3rem;color:#cbd5e1}

/* Misc */
.dropdown-menu{font-size:.875rem;box-shadow:0 4px 20px rgba(0,0,0,.1);border:1px solid var(--border)}
.search-bar{max-width:280px}
.row-actions a,.row-actions button{padding:.2rem .4rem;color:var(--muted);background:none;border:none}
.row-actions a:hover,.row-actions button:hover{color:var(--primary)}

/* Status indicators */
.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:.4rem}
.status-dot.green{background:var(--success)}
.status-dot.yellow{background:var(--warning)}
.status-dot.red{background:var(--danger)}
.status-dot.gray{background:#9ca3af}

@media print{
  .sidebar,.topbar{display:none}
  .main-area{margin-left:0}
  .content{padding:0}
}