===========================
FILE: public/app.css (custom, minimal design)
===========================


:root{
  --bg:#ffffff;         /* sfondo principale */
  --panel:#121723;      /* pannelli */
  --card:#151b2a;       /* card */
  --text2:#ffffff;       /* testo principale più chiaro */
  --muted:#cfd8e3;      /* testo attenuato, chiaro */
  --brand:#ff6f00;      /* arancione acceso (accento) */
  --brand-2:#ff9100;    /* arancione chiaro */
  --ok:#4caf50;         /* verde successo */
  --warn:#ffeb3b;       /* giallo avviso */
  --danger:#f44336;     /* rosso errore */
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 18px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:linear-gradient(180deg,#0a0f1e 0%,#070b14 100%);color:#ffffff;font:16px/1.45 system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif}


.app{min-height:100vh;display:grid;grid-template-rows:auto 1fr auto}
.topbar{position:sticky;top:0;display:flex;justify-content:space-between;align-items:center;padding:14px 18px;background:rgba(10,15,30,.6);backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid rgba(255,255,255,.06);z-index:10}
.brand{font-weight:700;letter-spacing:.3px}
.top-actions .btn{margin-left:8px}


.view{padding:18px;max-width:1100px;margin:0 auto;width:100%}
.hero{background:linear-gradient(135deg,#0d47a1 0%,#1e88e5 100%);padding:28px;border-radius:var(--radius);box-shadow:var(--shadow)}
.hero h1{margin:0 0 8px}
.hero p{margin:0 0 16px;color:#eef5ff}


.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin-top:18px}
.card{background:var(--card);border:1px solid rgba(255,255,255,.06);padding:16px;border-radius:var(--radius);box-shadow:var(--shadow)}
.card h3{margin:0 0 6px}


.toolbar{display:flex;gap:10px;margin-bottom:12px}
.toolbar input[type="search"]{flex:1;padding:12px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.08);background:#0f1420;color:var(--text)}


.panel{background:var(--panel);border:1px solid rgba(255,255,255,.08);padding:16px;border-radius:var(--radius);box-shadow:var(--shadow)}


.btn{appearance:none;border:0;border-radius:14px;padding:10px 16px;font-weight:600;cursor:pointer;box-shadow:var(--shadow);transition:transform .06s ease,opacity .2s}
.btn:active{transform:translateY(1px)}
.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:white}
.btn.success{background:var(--ok);color:#fff}
.btn.warning{background:var(--warn);color:#101}
.btn.danger{background:var(--danger);color:#fff}
.btn.ghost{background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--text)}


.bottombar{position:sticky;bottom:0;display:grid;grid-template-columns:repeat(4,1fr);gap:6px;background:rgba(10,15,30,.7);backdrop-filter:saturate(140%) blur(10px);padding:8px;border-top:1px solid rgba(255,255,255,.06)}
.bottombar button{background:transparent;color:var(--muted);border:0;border-radius:12px;padding:10px 6px;display:flex;flex-direction:column;align-items:center;gap:6px}
.bottombar button.active{color:#fff;background:rgba(255,255,255,.06)}


.scan-stage{position:relative;aspect-ratio:3/4;background:#02060f;border-radius:16px;border:1px dashed rgba(255,255,255,.1);display:grid;place-items:center;overflow:hidden}
#camera{width:100%;height:100%;object-fit:cover}
.scan-actions{display:flex;gap:10px;margin:12px 0}
#scan-result{margin-top:12px}


.auth{display:grid;gap:10px;margin:12px 0}
.auth input{padding:12px;border-radius:10px;border:1px solid rgba(255,255,255,.1);background:#0f1420;color:var(--text)}


.badge{display:inline-block;padding:4px 8px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);font-size:12px;color:#cfe1ff}
.meta{color:var(--muted);font-size:14px}

main.view[hidden]{ display:none !important; }