* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, sans-serif; background: #f1f5f9; color: #0f172a; }
.layout { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar { background: #0f172a; color: #e2e8f0; padding: 20px 16px; display: flex; flex-direction: column; }
.brand { font-size: 1.25rem; font-weight: 800; margin-bottom: 24px; color: #fff; }
.nav { display: block; width: 100%; text-align: left; padding: 10px 12px; margin-bottom: 4px; border: none; border-radius: 8px; background: transparent; color: inherit; cursor: pointer; font: inherit; }
.nav:hover { background: rgba(255,255,255,0.08); }
.nav.active { background: #2563eb; color: #fff; }
.sidebar-foot { margin-top: auto; padding-top: 24px; }
.bf-label { display: block; font-size: 0.75rem; margin-bottom: 4px; opacity: 0.8; }
#admin-key { width: 100%; padding: 8px; border-radius: 6px; border: none; margin-bottom: 8px; }
main { padding: 32px; }
h1 { margin: 0 0 8px; font-size: 1.5rem; }
.sub { color: #64748b; margin: 0 0 24px; }
.card { background: #fff; border-radius: 12px; border: 1px solid #e2e8f0; padding: 20px; margin-bottom: 16px; }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid #e2e8f0; }
th { color: #64748b; font-weight: 600; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 0.6875rem; font-weight: 700; text-transform: uppercase; }
.badge.confirmed { background: #d1fae5; color: #065f46; }
.badge.pending_payment { background: #fef3c7; color: #92400e; }
.badge.quote_requested { background: #fce7f3; color: #9d174d; }
.badge.cancelled { background: #fee2e2; color: #991b1b; }
.btn { padding: 8px 14px; border: none; border-radius: 8px; background: #2563eb; color: #fff; font-weight: 600; cursor: pointer; font: inherit; }
.btn.small { padding: 6px 10px; font-size: 0.8125rem; }
.btn.secondary { background: #e2e8f0; color: #0f172a; }
.btn.danger { background: #dc2626; }
.grid { display: grid; gap: 12px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
input, select, textarea { width: 100%; padding: 8px 10px; border: 1px solid #cbd5e1; border-radius: 8px; font: inherit; }
textarea { min-height: 72px; }
label { font-size: 0.8125rem; font-weight: 600; display: block; margin-bottom: 4px; }
pre { background: #0f172a; color: #e2e8f0; padding: 16px; border-radius: 8px; overflow-x: auto; font-size: 0.8125rem; }
.error { background: #fef2f2; color: #b91c1c; padding: 12px; border-radius: 8px; margin-bottom: 16px; }
@media (max-width: 768px) { .layout { grid-template-columns: 1fr; } .sidebar { min-height: auto; } .grid-2 { grid-template-columns: 1fr; } }