:root{--bg:#0f172a;--card:#1e293b;--line:#334155;--txt:#e2e8f0;--mut:#94a3b8;--acc:#2563eb;--ok:#16a34a;--err:#dc2626}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto;background:#f1f5f9;color:#0f172a}
.app{display:flex;min-height:100vh}.sidebar{width:230px;background:var(--bg);color:var(--txt);padding:18px;position:sticky;top:0;height:100vh;overflow:auto}
.sidebar .brand{font-weight:800;margin-bottom:16px}.sidebar nav{display:flex;flex-direction:column;gap:4px}
.sidebar a{color:var(--txt);text-decoration:none;padding:9px 10px;border-radius:8px}.sidebar a:hover{background:#1e293b}
.main{flex:1;min-width:0}.topbar{display:flex;gap:12px;align-items:center;background:#fff;border-bottom:1px solid #e2e8f0;padding:10px 16px;position:sticky;top:0;z-index:5}
.search{position:relative;flex:1;max-width:480px}.search input{width:100%;padding:9px 12px;border:1px solid #cbd5e1;border-radius:8px}
#gr{position:absolute;top:40px;left:0;right:0;background:#fff;border:1px solid #e2e8f0;border-radius:8px;display:none;max-height:300px;overflow:auto}
#gr a{display:block;padding:8px 10px;text-decoration:none;color:#0f172a;border-bottom:1px solid #f1f5f9}
.bell{position:relative;text-decoration:none;font-size:20px}.badge{background:#dc2626;color:#fff;border-radius:99px;font-size:11px;padding:1px 6px;position:absolute;top:-6px;right:-8px}
.user{display:flex;gap:10px;align-items:center;margin-left:auto}.muted{color:var(--mut)}
.content{padding:20px;max-width:1200px}.card{background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:18px;margin-bottom:16px}
.grid{display:grid;gap:12px}.g4{grid-template-columns:repeat(4,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g2{grid-template-columns:repeat(2,1fr)}
.stat{background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:16px}.stat b{font-size:24px;display:block}
.btn{background:var(--acc);color:#fff;border:0;padding:9px 14px;border-radius:8px;cursor:pointer;text-decoration:none;display:inline-block;font-weight:600}
.btn.sec{background:#475569}.btn.danger{background:var(--err)}.btn.ok{background:var(--ok)}
table.tbl{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden}
.tbl th,.tbl td{padding:10px;border-bottom:1px solid #e2e8f0;text-align:left;font-size:14px}.tbl th{background:#f8fafc}
input,select,textarea{padding:9px 10px;border:1px solid #cbd5e1;border-radius:8px;width:100%;margin:4px 0;background:#fff}
form.inline{display:inline}.alert{padding:12px;border-radius:8px;margin-bottom:12px}.alert.ok{background:#dcfce7;border:1px solid #86efac}.alert.err{background:#fee2e2;border:1px solid #fca5a5}
.pill{display:inline-block;padding:2px 10px;border-radius:99px;font-size:12px;background:#e2e8f0}.pill.green{background:#bbf7d0}.pill.red{background:#fecaca}.pill.blue{background:#bfdbfe}
.guest{background:var(--bg);min-height:100vh;display:flex;justify-content:center;align-items:center;padding:20px}
.guest-card{background:#fff;border-radius:14px;padding:28px;max-width:460px;width:100%}
.landing{background:#fff;color:#0f172a}.lnav{display:flex;justify-content:space-between;padding:16px 24px;border-bottom:1px solid #e2e8f0}.lnav a{margin-left:12px;text-decoration:none}
.hero{text-align:center;padding:70px 20px;background:linear-gradient(180deg,#eff6ff,#fff)}.hero h1{font-size:42px;margin:0 0 12px}
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;padding:30px;max-width:1000px;margin:auto}
.feat{border:1px solid #e2e8f0;border-radius:12px;padding:18px}.lfoot{text-align:center;padding:30px;color:#64748b}
.menu-btn{display:none}
canvas#sig{border:1px solid #94a3b8;border-radius:8px;touch-action:none;background:#fff}
@media(max-width:900px){.g4,.g3{grid-template-columns:repeat(2,1fr)}.feats{grid-template-columns:1fr}}
@media(max-width:700px){.sidebar{position:fixed;left:-240px;top:0;z-index:20;transition:.2s}.sidebar.open{left:0}.menu-btn{display:block}.g4,.g3,.g2{grid-template-columns:1fr}.tbl{display:block;overflow-x:auto}}