:root {
    --bg: #0f172a;
    --panel: #ffffff;
    --panel-soft: #f8fafc;
    --line: #dbe3ee;
    --primary: #155e95;
    --primary-2: #1d4ed8;
    --text: #0f172a;
    --muted: #64748b;
    --success: #16a34a;
    --danger: #ef4444;
    --warning: #f59e0b;
    --sidebar: #162033;
    --sidebar-2: #1d2940;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, Segoe UI, Arial, sans-serif; color: var(--text); background: #eef2f7; }
.app-shell { display: flex; min-height: 100vh; }
.sidebar { width: 270px; background: linear-gradient(180deg, var(--sidebar), #111827); color: #fff; padding: 20px 14px; position: sticky; top: 0; height: 100vh; overflow: auto; }
.brand { font-size: 22px; font-weight: 700; margin-bottom: 18px; }
.menu-group { margin: 18px 10px 8px; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: #93c5fd; }
.menu-item { display: block; color: #e5e7eb; text-decoration: none; padding: 12px 14px; border-radius: 12px; margin: 4px 0; transition: .2s ease; }
.menu-item:hover, .menu-item.active { background: rgba(255,255,255,.09); color: #fff; }
.main-content { flex: 1; padding: 18px; }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.tabs { display: flex; gap: 10px; flex-wrap: wrap; }
.tab { background: #fff; color: var(--text); border-radius: 14px 14px 6px 6px; padding: 12px 18px; font-weight: 700; box-shadow: 0 8px 24px rgba(15,23,42,.08); }
.user-box { background: #fff; padding: 10px 14px; border-radius: 999px; font-weight: 600; box-shadow: 0 8px 24px rgba(15,23,42,.08); }
.alert { padding: 14px 16px; border-radius: 14px; margin-bottom: 16px; font-weight: 600; }
.alert.success { background: #dcfce7; color: #166534; }
.alert.error { background: #fee2e2; color: #991b1b; }
.card { background: var(--panel); border-radius: 20px; box-shadow: 0 12px 30px rgba(15,23,42,.08); border: 1px solid rgba(148,163,184,.15); margin-bottom: 18px; }
.card-header { padding: 16px 20px; font-size: 18px; font-weight: 700; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; }
.card-body { padding: 16px 20px; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stat { padding: 18px; border-radius: 18px; background: linear-gradient(135deg, #fff, #f8fbff); border: 1px solid var(--line); }
.stat .label { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.stat .value { font-size: 28px; font-weight: 800; }
.stat .sub { font-size: 13px; color: var(--muted); margin-top: 8px; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.btn { border: 0; padding: 10px 14px; border-radius: 12px; font-weight: 700; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-light { background: #eef2ff; color: #1e3a8a; }
.btn-success { background: var(--success); color: #fff; }
.form-grid { display: grid; gap: 12px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.form-grid-2 { display: grid; gap: 12px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.input, select, textarea { width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid #cbd5e1; background: #fff; font: inherit; }
textarea { min-height: 92px; resize: vertical; }
label { font-size: 13px; color: var(--muted); display: block; margin-bottom: 6px; font-weight: 600; }
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; min-width: 900px; }
th { background: linear-gradient(135deg, #165985, #1f6ea5); color: #fff; text-align: left; padding: 13px 10px; font-size: 14px; position: sticky; top: 0; }
td { padding: 11px 10px; border-bottom: 1px solid var(--line); background: #fff; }
tr:nth-child(even) td { background: #f8fafc; }
.badge { display: inline-block; padding: 6px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.badge.Pending { background: #fef3c7; color: #92400e; }
.badge.Confirmed, .badge.Done, .badge.Active, .badge.Issued { background: #dcfce7; color: #166534; }
.badge.In\ Progress, .badge.In\ Progress { background: #dbeafe; color: #1d4ed8; }
.badge.Maintenance { background: #fee2e2; color: #b91c1c; }
.columns { display: grid; grid-template-columns: 420px 1fr; gap: 18px; }
.calendar { background: linear-gradient(180deg, #fff, #f8fbff); border: 1px solid var(--line); border-radius: 20px; padding: 18px; }
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); border: 1px solid var(--line); border-right: 0; border-bottom: 0; }
.calendar-grid > div { min-height: 92px; padding: 10px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.calendar-grid .head { min-height: 48px; background: #60a5fa; color: #fff; font-weight: 700; }
.small { color: var(--muted); font-size: 12px; }
.section-title { font-size: 22px; font-weight: 800; margin-bottom: 12px; }
.chart-bars { display: flex; align-items: end; gap: 14px; height: 220px; padding: 8px 0; }
.chart-bars .bar { flex: 1; background: linear-gradient(180deg, #60a5fa, #2563eb); border-radius: 14px 14px 4px 4px; position: relative; min-width: 50px; }
.chart-bars .bar span { position: absolute; top: -28px; left: 50%; transform: translateX(-50%); font-size: 12px; font-weight: 700; }
.chart-bars .bar label { position: absolute; bottom: -28px; left: 50%; transform: translateX(-50%); color: var(--muted); white-space: nowrap; }
@media (max-width: 1200px) {
  .grid-4, .grid-3, .form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .columns { grid-template-columns: 1fr; }
}
@media (max-width: 800px) {
  .sidebar { display:none; }
  .grid-2, .form-grid-2, .grid-4, .grid-3, .form-grid { grid-template-columns: 1fr; }
  .main-content { padding: 12px; }
}