:root{--primary:#1d4ed8;--bg:#f4f7fb;--card:#fff;--text:#172033;--muted:#687386;--border:#e3e8f0;--danger:#c62828;--success:#16803a;--warning:#b7791f;--radius:14px;--shadow:0 8px 24px rgba(23,32,51,.08)}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}button,input,select,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}.muted{color:var(--muted)}
.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(145deg,#eef4ff,#f8fbff)}.login-card{width:min(390px,100%);background:white;padding:32px;border-radius:22px;box-shadow:var(--shadow);display:grid;gap:16px}.login-card h1{margin:0;text-align:center}.login-card p,.login-card small{text-align:center}.brand-mark{width:54px;height:54px;border-radius:16px;display:grid;place-items:center;background:var(--primary);color:white;font-weight:800;font-size:28px;margin:auto}.brand-mark.small{width:38px;height:38px;border-radius:11px;font-size:20px;margin:0}
label{display:grid;gap:7px;font-size:13px;font-weight:600}input,select,textarea{width:100%;border:1px solid var(--border);border-radius:10px;padding:10px 12px;background:#fff;color:var(--text);outline:none}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 12%,transparent)}textarea{min-height:90px;resize:vertical}.btn{border:0;border-radius:10px;padding:10px 14px;font-weight:700}.btn.primary{background:var(--primary);color:#fff}.btn.secondary{background:#e8eefb;color:#233657}.btn.danger{background:#feecec;color:var(--danger)}.btn.success{background:#e9f8ee;color:var(--success)}.btn.ghost{background:transparent;border:1px solid rgba(255,255,255,.2);color:white}.btn.small{padding:7px 10px;font-size:12px}.icon-btn{border:0;background:transparent;font-size:23px;padding:5px;color:inherit}
.app-shell{min-height:100vh}.sidebar{position:fixed;left:0;top:0;bottom:0;width:270px;background:#101a2d;color:#fff;padding:16px;z-index:20;display:flex;flex-direction:column}.sidebar-head{display:flex;gap:11px;align-items:center;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.1)}.sidebar-head>div:nth-child(2){display:grid;gap:2px;min-width:0}.sidebar-head strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-head small{color:#aab7cb}.sidebar nav{padding:14px 0;overflow:auto;flex:1}.nav-group{margin-bottom:8px}.nav-group-btn,.nav-item{width:100%;border:0;background:transparent;color:#dbe5f5;text-align:left;padding:10px 12px;border-radius:9px;display:flex;align-items:center;justify-content:space-between}.nav-group-btn{font-weight:700;color:#fff}.nav-group-btn:hover,.nav-item:hover,.nav-item.active{background:rgba(255,255,255,.09)}.nav-children{display:none;padding:3px 0 5px 12px}.nav-group.open .nav-children{display:grid}.nav-item{font-size:14px}.nav-arrow{transition:.2s}.nav-group.open .nav-arrow{transform:rotate(180deg)}.sidebar-user{display:grid;gap:5px;border-top:1px solid rgba(255,255,255,.1);padding-top:14px}.sidebar-user small{color:#9fb0c8}.main{margin-left:270px;min-height:100vh}.topbar{height:72px;background:white;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:14px;padding:0 22px;position:sticky;top:0;z-index:10}.topbar h2{margin:0;font-size:20px}.topbar .top-actions{margin-left:auto;color:var(--muted);font-size:13px}.content{padding:22px;display:grid;gap:18px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:0 2px 10px rgba(23,32,51,.03)}.card h3{margin:0 0 14px}.grid{display:grid;gap:15px}.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.stat{padding:17px;border-radius:14px;background:white;border:1px solid var(--border)}.stat small{color:var(--muted)}.stat strong{display:block;font-size:28px;margin-top:4px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.row.end{justify-content:flex-end}.row.between{justify-content:space-between}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.form-grid .full{grid-column:1/-1}.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:end}.toolbar label{min-width:150px;flex:1}.toolbar .search{min-width:220px;flex:2}.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:12px}table{width:100%;border-collapse:collapse;min-width:850px;background:#fff}th,td{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left;font-size:13px;vertical-align:top}th{background:#f8fafc;position:sticky;top:0;z-index:1;color:#48556a}tr:hover td{background:#fbfdff}.badge{display:inline-flex;border-radius:999px;padding:4px 8px;font-size:11px;font-weight:800}.badge.ISSUED{background:#e8f7ed;color:#147a35}.badge.RESERVED{background:#fff5d9;color:#9a6810}.badge.CANCELLED{background:#fdecec;color:#b52626}.number-box{border:1px dashed var(--primary);background:color-mix(in srgb,var(--primary) 5%,white);border-radius:13px;padding:16px;text-align:center}.number-box strong{font-size:22px;word-break:break-word}.empty{text-align:center;padding:32px;color:var(--muted)}.danger-zone{border-color:#f4caca;background:#fffafa}.notice{border-left:4px solid var(--primary);background:#f4f7ff;padding:12px;border-radius:8px;font-size:13px}.toast{position:fixed;right:18px;bottom:18px;z-index:100;background:#152238;color:#fff;padding:12px 16px;border-radius:10px;opacity:0;transform:translateY(10px);pointer-events:none;transition:.2s;max-width:360px}.toast.show{opacity:1;transform:translateY(0)}.toast.error{background:#9f2626}.overlay{display:none}.mobile-only{display:none}
@media(max-width:900px){.sidebar{transform:translateX(-105%);transition:.22s}.sidebar.open{transform:none}.main{margin-left:0}.overlay{position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:15}.overlay.show{display:block}.mobile-only{display:block}.grid.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.cols-3{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}.topbar{padding:0 12px}.content{padding:14px}}
@media(max-width:560px){.grid.cols-4,.grid.cols-3,.grid.cols-2{grid-template-columns:1fr}.toolbar{display:grid;grid-template-columns:1fr;width:100%}.toolbar label{min-width:0}.topbar .top-actions{display:none}.card{padding:14px}.login-card{padding:24px}.row.mobile-stack{display:grid;grid-template-columns:1fr}.row.mobile-stack>.btn{width:100%}}