:root{
  --navy:#1D3557; --navy2:#274a78; --mint:#A8DADC; --blue:#457B9D; --blue-d:#3a6a89;
  --red:#E63946; --paper:#F1FAEE; --ink:#1b2330; --muted:#64707f;
  --bg:#eef1f6; --card:#ffffff; --line:#e0e5ec; --field:#f4f6fa;
  --shadow:0 1px 2px rgba(20,40,70,.05), 0 8px 24px rgba(20,40,70,.06);
}
@media (prefers-color-scheme: dark){
  :root{ --navy:#16233a; --navy2:#22355a; --ink:#e8ecf3; --muted:#95a1b3;
    --bg:#0f1319; --card:#181e27; --line:#29323f; --field:#0f141c;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);}
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.5}

/* Header */
.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;
  gap:16px;background:linear-gradient(120deg,var(--navy),var(--navy2));color:var(--paper);
  padding:14px clamp(16px,4vw,28px);box-shadow:0 2px 10px rgba(0,0,0,.15)}
.brand{display:flex;align-items:center;gap:14px}
.logo{width:46px;height:46px;flex:none;filter:drop-shadow(0 2px 4px rgba(0,0,0,.25))}
.topbar h1{margin:0;font-size:1.4rem;font-weight:800;letter-spacing:.3px}
.tag{margin:1px 0 0;font-size:.82rem;color:var(--mint)}
.home-link{color:var(--mint);text-decoration:none;font-size:.9rem;white-space:nowrap;
  padding:7px 12px;border:1px solid rgba(168,218,220,.4);border-radius:9px;transition:background .15s}
.home-link:hover{background:rgba(168,218,220,.15)}

main{max-width:1040px;margin:0 auto;padding:clamp(16px,3vw,28px) 16px 56px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:clamp(18px,3vw,26px);box-shadow:var(--shadow);margin-bottom:22px}

/* Section title */
.section-title{display:flex;align-items:center;gap:10px;font-size:1.02rem;font-weight:700;
  color:var(--ink);margin:6px 0 16px}
.section-title:not(:first-child){margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}
/* Solo il primo span è il numero della sezione: gli altri sono il titolo tradotto. */
.section-title > span:first-child{display:grid;place-items:center;width:26px;height:26px;border-radius:8px;
  background:var(--navy);color:#fff;font-size:.85rem;font-weight:800;flex:none}

/* Form grid — fields align because captions have a fixed height */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field.span2{grid-column:span 2}
.field label{font-size:.8rem;font-weight:600;color:var(--muted);min-height:1.25em;
  display:flex;align-items:baseline;gap:6px}
.field label em{font-style:normal;font-weight:400;color:var(--muted);opacity:.75}
input,select{font-size:.98rem;padding:10px 12px;border:1px solid var(--line);border-radius:10px;
  background:var(--field);color:var(--ink);width:100%;height:44px;transition:border-color .12s, box-shadow .12s}
input::placeholder{color:var(--muted);opacity:.6}
select{appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%2364707f' d='M1 1l5 5 5-5'/></svg>");
  background-repeat:no-repeat;background-position:right 12px center;padding-right:34px}
.inline{display:flex;gap:8px}
.inline input{flex:1}
.inline select{width:70px;flex:none;padding-right:26px;background-position:right 8px center}
input:focus,select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(69,123,157,.18)}

/* Toggles */
.toggles{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.toggle{display:inline-flex;align-items:center;gap:9px;background:var(--field);border:1px solid var(--line);
  border-radius:11px;padding:10px 14px;font-size:.9rem;cursor:pointer;user-select:none;transition:border-color .12s,background .12s}
.toggle:hover{border-color:var(--blue)}
.toggle input{width:18px;height:18px;accent-color:var(--blue);cursor:pointer;flex:none}
.toggle:has(input:checked){border-color:var(--blue);background:rgba(69,123,157,.08)}

/* Action */
.actions{display:flex;align-items:center;gap:16px;margin-top:24px;flex-wrap:wrap}
button#go{background:var(--navy);color:#fff;border:0;border-radius:12px;padding:14px 30px;
  font-size:1.05rem;font-weight:700;cursor:pointer;transition:transform .08s, background .15s;
  box-shadow:0 6px 16px rgba(29,53,87,.28)}
button#go:hover{background:var(--navy2)}
button#go:active{transform:translateY(1px)}
button#go:disabled{opacity:.55;cursor:default;box-shadow:none}
.status{margin:0;font-size:.9rem;color:var(--muted)}
.status.err{color:var(--red);font-weight:600}

.hidden{display:none !important}

/* Results */
#results{display:flex;flex-direction:column;gap:18px}
.sol{background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:clamp(16px,3vw,24px);box-shadow:var(--shadow);overflow:hidden}
.sol.reco{border-color:var(--blue)}
.sol-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:6px}
.sol.reco .sol-head{background:linear-gradient(120deg,var(--navy),var(--navy2));color:#fff;
  border-radius:12px;padding:14px 18px;margin-bottom:16px}
.sol-head h3{margin:0;font-size:1.3rem;font-weight:800}
.sol.reco .sol-head h3{color:#fff}
.badges{display:flex;gap:6px;flex-wrap:wrap}
.badge{font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.5px;
  padding:4px 10px;border-radius:999px;background:var(--mint);color:var(--navy)}
.badge.dense{background:var(--red);color:#fff}
.badge.ghost{background:transparent;color:var(--muted);border:1px solid var(--line)}
.sub{color:var(--muted);font-size:.92rem;margin:0 0 16px}

.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:18px}
.tile{background:var(--field);border:1px solid var(--line);border-radius:12px;padding:11px 13px}
.tile .k{font-size:.68rem;color:var(--muted);text-transform:uppercase;letter-spacing:.4px;font-weight:600}
.tile .v{font-size:1.2rem;font-weight:800;margin-top:3px;color:var(--ink)}
.tile.hl{background:var(--navy);border-color:var(--navy)}
.tile.hl .k{color:var(--mint)}
.tile.hl .v{color:#fff}

.views{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.view{background:var(--field);border:1px solid var(--line);border-radius:12px;padding:12px}
.view canvas{width:100%;height:auto;display:block}
.view .cap{text-align:center;font-size:.82rem;color:var(--muted);margin-top:8px;font-weight:600}

.reasons{list-style:none;padding:0;margin:18px 0 0}
.reasons li{font-size:.92rem;padding:9px 0 9px 24px;position:relative;border-top:1px solid var(--line)}
.reasons li::before{content:"";position:absolute;left:6px;top:15px;width:7px;height:7px;border-radius:50%;background:var(--blue)}
.warn{background:rgba(230,57,70,.08);border:1px solid rgba(230,57,70,.3);color:var(--red);
  border-radius:12px;padding:12px 15px;font-size:.9rem;font-weight:500}
.info{background:rgba(69,123,157,.09);border:1px solid rgba(69,123,157,.28);color:var(--blue);
  border-radius:12px;padding:11px 15px;font-size:.88rem}
.info::before{content:"ℹ ";font-weight:700}
.note{background:rgba(214,150,50,.10);border:1px solid rgba(214,150,50,.4);color:#9a6a10;
  border-radius:12px;padding:11px 15px;font-size:.9rem}
.note::before{content:"⚠ ";font-weight:700}
@media (prefers-color-scheme: dark){ .note{color:#e0b24a} }

.sol-actions{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);display:flex;justify-content:flex-end}
.pdf-btn{background:var(--field);color:var(--blue);border:1px solid var(--blue);border-radius:10px;
  padding:9px 18px;font-size:.9rem;font-weight:700;cursor:pointer;transition:background .12s,color .12s}
.pdf-btn:hover{background:var(--blue);color:#fff}
.pdf-btn:disabled{opacity:.6;cursor:default}

/* Barra utente nell'header */
.topbar-right{display:flex;align-items:center;gap:14px}
.userbar{display:flex;align-items:center;gap:10px;color:var(--paper);font-size:.88rem}
.ub-name{font-weight:700}
.ub-quota{background:rgba(255,255,255,.14);border:1px solid rgba(168,218,220,.35);color:var(--mint);
  padding:4px 10px;border-radius:999px;font-size:.8rem;white-space:nowrap}
.ub-quota.low{background:rgba(230,57,70,.25);border-color:rgba(230,57,70,.6);color:#ffd7db}
.ub-btn{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.25);
  border-radius:9px;padding:7px 13px;font-size:.85rem;font-weight:600;cursor:pointer;transition:background .12s}
.ub-btn:hover{background:rgba(255,255,255,.22)}

/* Overlay (login, quota, admin) */
.overlay{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:20px;
  background:rgba(15,22,34,.55);backdrop-filter:blur(3px)}
.auth-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px;
  width:100%;max-width:380px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.auth-brand{display:flex;align-items:center;gap:12px;justify-content:center;margin-bottom:8px}
.auth-brand h2{margin:0;font-size:1.5rem;color:var(--ink)}
.auth-card>h2{margin:0 0 10px;color:var(--ink)}
.auth-tabs{display:flex;gap:6px;background:var(--field);border-radius:11px;padding:4px;margin:16px 0 18px}
.auth-tab{flex:1;border:0;background:transparent;color:var(--muted);font-weight:700;font-size:.92rem;
  padding:9px;border-radius:8px;cursor:pointer}
.auth-tab.active{background:var(--card);color:var(--navy);box-shadow:var(--shadow)}
.auth-form{display:flex;flex-direction:column;gap:12px}
.auth-form label{font-size:.82rem;font-weight:600;color:var(--muted);gap:5px}
.auth-form label em{font-style:normal;font-weight:400;opacity:.75}
.auth-form button{margin-top:4px;background:var(--navy);color:#fff;border:0;border-radius:11px;
  padding:12px;font-size:1rem;font-weight:700;cursor:pointer}
.auth-form button:hover{background:var(--navy2)}
.auth-note{font-size:.82rem;color:var(--muted);text-align:center;margin:2px 0 0}
.auth-msg{color:var(--red);font-size:.85rem;font-weight:600;margin:2px 0 0;min-height:1em;text-align:center}

.quota-dev{margin:14px 0 4px;font-weight:600;color:var(--ink)}
.quota-mail{display:block;font-size:1.15rem;font-weight:800;color:var(--blue);margin-bottom:12px;word-break:break-all}
.quota-wa{display:inline-flex;align-items:center;gap:8px;background:#25D366;color:#fff;font-weight:700;
  text-decoration:none;padding:10px 16px;border-radius:11px;margin-bottom:16px}
.quota-wa:hover{background:#1eb955}
#quota .ub-btn,#admin .ub-btn{background:var(--navy)}
.footer-wa{display:inline-flex;align-items:center;gap:5px;color:#25D366;text-decoration:none;font-weight:700;margin-left:8px}
.footer-wa:hover{text-decoration:underline}

/* Pannello admin */
.admin-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;
  width:100%;max-width:900px;max-height:85vh;overflow:auto;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.admin-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.admin-head h2{margin:0;color:var(--ink)}
.admin-table-wrap{overflow-x:auto}
.admin-table{width:100%;border-collapse:collapse;font-size:.88rem}
.admin-table th{text-align:left;color:var(--muted);font-size:.72rem;text-transform:uppercase;letter-spacing:.4px;
  padding:8px 10px;border-bottom:2px solid var(--line)}
.admin-table td{padding:10px;border-bottom:1px solid var(--line);vertical-align:middle;color:var(--ink)}
.admin-sub{font-size:.75rem;color:var(--muted)}
.tagadm{background:var(--blue);color:#fff;font-size:.65rem;font-weight:700;padding:2px 6px;border-radius:6px;text-transform:uppercase}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:6px}
.dot.on{background:#3fae5a}.dot.off{background:var(--red)}
.admin-actions{display:flex;gap:6px;flex-wrap:wrap}
.admin-btn{border:1px solid var(--line);background:var(--field);color:var(--ink);border-radius:8px;
  padding:6px 10px;font-size:.8rem;font-weight:600;cursor:pointer}
.admin-btn:hover{border-color:var(--blue)}
.admin-btn.ok{border-color:#3fae5a;color:#2e8a45}
.admin-btn.warn{border-color:var(--red);color:var(--red)}
.admin-loading{color:var(--muted);padding:16px}

footer{text-align:center;color:var(--muted);font-size:.82rem;padding:24px 16px}

/* Responsive */
@media(max-width:820px){ .grid,.tiles{grid-template-columns:repeat(2,1fr)} .field.span2{grid-column:span 2} }
@media(max-width:560px){
  .grid{grid-template-columns:1fr} .field.span2{grid-column:span 1}
  .tiles{grid-template-columns:repeat(2,1fr)} .views{grid-template-columns:1fr}
  .sol.reco .sol-head{margin-left:-16px;margin-right:-16px;padding:14px 16px}
}

/* Selettore lingua */
.lang-pick{display:flex;gap:6px;background:var(--field);border-radius:11px;padding:4px;margin-top:14px}
.lang-btn{flex:1;border:0;background:transparent;color:var(--muted);font-weight:700;font-size:.88rem;
  padding:8px;border-radius:8px;cursor:pointer}
.lang-btn.active{background:var(--card);color:var(--navy);box-shadow:var(--shadow)}
.ub-lang{min-width:42px;font-weight:800;letter-spacing:.5px}
/* Secondo bottone PDF (lingua alternativa) */
.pdf-btn.ghost{background:transparent;color:var(--muted);border-color:var(--line)}
.pdf-btn.ghost:hover{background:var(--muted);color:#fff;border-color:var(--muted)}
.sol-actions{gap:8px}

/* Archivio articoli */
.archive{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:16px;
  background:var(--field);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.archive select{flex:1;min-width:180px;height:38px;font-size:.9rem}
.arc-btn{background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:9px;
  padding:9px 14px;font-size:.85rem;font-weight:600;cursor:pointer;white-space:nowrap}
.arc-btn:hover{border-color:var(--blue)}
.arc-btn.primary{background:var(--navy);color:#fff;border-color:var(--navy)}
.arc-btn.primary:hover{background:var(--navy2)}
.arc-btn.danger{color:var(--red);border-color:var(--line)}
.arc-btn.danger:hover{border-color:var(--red)}
.arc-msg{font-size:.82rem;color:var(--blue);font-weight:600}