:root{
  --primary:#2563eb; --primary-dark:#1d4ed8; --bg:#f4f6f8; --card:#ffffff;
  --text:#1e293b; --muted:#64748b; --border:#e2e8f0;
  --success:#16a34a; --danger:#dc2626; --warning:#d97706;
}
*{box-sizing:border-box}
body{margin:0;font-family:Tahoma,'Vazirmatn',sans-serif;background:var(--bg);color:var(--text);direction:rtl}
a{color:inherit;text-decoration:none}

/* Layout */
.app{display:flex;min-height:100vh}
.sidebar{width:230px;background:#111827;color:#e5e7eb;padding:18px 12px;flex-shrink:0}
.sidebar h2{font-size:15px;color:#fff;padding:0 8px 14px;border-bottom:1px solid #1f2937;margin:0 0 12px}
.sidebar a{display:block;padding:10px 12px;border-radius:8px;font-size:14px;margin-bottom:4px;color:#cbd5e1}
.sidebar a:hover,.sidebar a.active{background:var(--primary);color:#fff}
.main{flex:1;padding:22px;max-width:100%;overflow-x:auto}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.topbar .user{font-size:13px;color:var(--muted)}

/* Cards / grid */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:20px}
.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:16px}
.card .num{font-size:24px;font-weight:bold;color:var(--primary)}
.card .label{font-size:13px;color:var(--muted);margin-top:4px}

/* Table */
table{width:100%;border-collapse:collapse;background:var(--card);border-radius:8px;overflow:hidden;font-size:13px}
th,td{padding:10px 12px;text-align:right;border-bottom:1px solid var(--border)}
th{background:#f8fafc;color:var(--muted);font-weight:600}
tr:hover td{background:#f9fafb}

/* Forms */
.form-box{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:20px;max-width:640px}
label{display:block;font-size:13px;color:var(--muted);margin:12px 0 5px}
input,select,textarea{width:100%;padding:9px 10px;border:1px solid var(--border);border-radius:7px;font-size:14px;font-family:inherit}
button,.btn{display:inline-block;padding:9px 18px;border:none;border-radius:7px;background:var(--primary);color:#fff;font-size:14px;cursor:pointer}
button:hover,.btn:hover{background:var(--primary-dark)}
.btn-danger{background:var(--danger)} .btn-danger:hover{background:#b91c1c}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}

/* Alerts */
.alert{padding:12px 14px;border-radius:8px;margin-bottom:14px;font-size:13px}
.alert-success{background:#dcfce7;color:#166534}
.alert-danger{background:#fee2e2;color:#991b1b}
.alert-warning{background:#fef3c7;color:#92400e}

.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:12px}
.badge-pending{background:#fef3c7;color:#92400e}
.badge-approved{background:#dcfce7;color:#166534}
.badge-cancelled{background:#fee2e2;color:#991b1b}

/* Mobile */
@media (max-width:768px){
  .app{flex-direction:column}
  .sidebar{width:100%;display:flex;overflow-x:auto;white-space:nowrap;padding:10px}
  .sidebar h2{display:none}
  .sidebar a{display:inline-block;margin-left:6px}
  table,thead,tbody,tr,td,th{display:block;width:100%}
  thead{display:none}
  tr{border:1px solid var(--border);border-radius:8px;margin-bottom:10px;padding:8px}
  td{border:none;padding:6px 4px;display:flex;justify-content:space-between}
  td::before{content:attr(data-label);color:var(--muted);font-size:12px}
}

@media print{
  .sidebar,.topbar,.no-print{display:none !important}
  .main{padding:0}
  body{background:#fff}
}