/* ============================================================
   EL.FO. srl — Design System
   Look: istituzionale + tecnico. Responsive, mobile-first.
   ============================================================ */

/* ---------- Tokens ---------- */
:root{
  --bg:        #f7f7f4;
  --surface:   #ffffff;
  --surface-2: #f0f1ec;
  --ink:       #1a1d21;
  --ink-soft:  #41464d;
  --muted:     #6b7178;
  --line:      #e2e4de;
  --line-strong:#cfd2ca;

  --accent:    #1d4e89;   /* blu industriale */
  --accent-700:#163c69;
  --accent-050:#eaf1f8;
  --ok:        #1f7a4d;   /* verde "disponibile" */
  --warn:      #b4540a;

  --font-head: "Archivo", system-ui, sans-serif;
  --font-body: "Public Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  --maxw: 1240px;
  --radius: 4px;
  --shadow-sm: 0 1px 2px rgba(20,24,30,.06), 0 1px 1px rgba(20,24,30,.04);
  --shadow-md: 0 6px 22px rgba(20,24,30,.09), 0 2px 6px rgba(20,24,30,.05);
  --header-h: 68px;
}

*{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; scroll-padding-top:calc(var(--header-h) + 16px); }
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--font-body); font-size:17px; line-height:1.6;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
img{ max-width:100%; display:block; }
a{ color:var(--accent); text-decoration:none; }
a:hover{ color:var(--accent-700); }
h1,h2,h3,h4{ font-family:var(--font-head); font-weight:700; line-height:1.12; color:var(--ink); margin:0; letter-spacing:-.01em; }
.mono{ font-family:var(--font-mono); }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 clamp(18px,4vw,40px); }
.section{ padding:clamp(48px,7vw,96px) 0; }
.muted{ color:var(--muted); }

/* ---------- Skip link ---------- */
.skip{ position:absolute; left:-9999px; top:0; background:var(--ink); color:#fff; padding:10px 16px; z-index:200; }
.skip:focus{ left:8px; top:8px; }

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(247,247,244,.92); backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{ height:var(--header-h); display:flex; align-items:center; gap:24px; }
.brand{ display:flex; align-items:center; gap:12px; flex-shrink:0; color:var(--ink); }
.brand:hover{ color:var(--ink); }
.brand .logo{
  font-family:var(--font-head); font-weight:800; font-size:21px; letter-spacing:.02em;
  display:flex; align-items:center; gap:9px;
}
.brand .logo .glyph{
  width:34px; height:34px; border-radius:5px; background:var(--accent); color:#fff;
  display:grid; place-items:center; font-size:13px; letter-spacing:0; line-height:1;
  font-weight:800; box-shadow:var(--shadow-sm);
}
.brand .logo b{ color:var(--ink); }
.brand .logo .dot{ color:var(--accent); }
.brand small{ display:block; font-family:var(--font-body); font-weight:500; font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); margin-top:1px; }

.nav{ margin-left:auto; display:flex; align-items:center; gap:4px; }
.nav a{
  color:var(--ink-soft); font-weight:600; font-size:14.5px; padding:9px 12px; border-radius:var(--radius);
  white-space:nowrap; transition:background .15s, color .15s;
}
.nav a:hover{ background:var(--surface-2); color:var(--ink); }
.nav a.active{ color:var(--accent); }
.nav a.pill{ background:var(--accent); color:#fff; }
.nav a.pill:hover{ background:var(--accent-700); color:#fff; }
.nav a.pill.alt{ background:var(--ink); }
.nav a.pill.alt:hover{ background:#000; }

.menu-toggle{ display:none; margin-left:auto; background:none; border:1px solid var(--line-strong);
  border-radius:var(--radius); width:44px; height:44px; align-items:center; justify-content:center; cursor:pointer; }
.menu-toggle span, .menu-toggle span::before, .menu-toggle span::after{
  content:""; display:block; width:20px; height:2px; background:var(--ink); position:relative; transition:.2s; }
.menu-toggle span::before{ position:absolute; top:-6px; }
.menu-toggle span::after{ position:absolute; top:6px; }
body.menu-open .menu-toggle span{ background:transparent; }
body.menu-open .menu-toggle span::before{ top:0; transform:rotate(45deg); }
body.menu-open .menu-toggle span::after{ top:0; transform:rotate(-45deg); }

/* ---------- Hero ---------- */
.hero{ background:var(--surface); border-bottom:1px solid var(--line); }
.hero-grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:clamp(28px,5vw,64px); align-items:center;
  padding:clamp(44px,6vw,80px) 0; }
.eyebrow{ display:inline-flex; align-items:center; gap:8px; font-family:var(--font-mono); font-size:12.5px;
  letter-spacing:.06em; text-transform:uppercase; color:var(--accent); background:var(--accent-050);
  border:1px solid #d6e2f0; padding:5px 11px; border-radius:100px; margin-bottom:22px; }
.eyebrow .led{ width:7px; height:7px; border-radius:50%; background:var(--ok); box-shadow:0 0 0 3px rgba(31,122,77,.18); }
.hero h1{ font-size:clamp(32px,4.6vw,52px); margin-bottom:18px; }
.hero p.lead{ font-size:clamp(17px,1.6vw,19px); color:var(--ink-soft); max-width:54ch; margin:0 0 28px; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:12px; }

.hero-aside{ background:var(--surface-2); border:1px solid var(--line); border-radius:8px; padding:8px; }

/* ---------- Buttons ---------- */
.btn{ display:inline-flex; align-items:center; gap:9px; font-family:var(--font-body); font-weight:700;
  font-size:15px; padding:13px 22px; border-radius:var(--radius); border:1px solid transparent; cursor:pointer;
  transition:transform .12s, background .15s, box-shadow .15s, border-color .15s; line-height:1; }
.btn:active{ transform:translateY(1px); }
.btn-primary{ background:var(--accent); color:#fff; box-shadow:var(--shadow-sm); }
.btn-primary:hover{ background:var(--accent-700); color:#fff; }
.btn-dark{ background:var(--ink); color:#fff; }
.btn-dark:hover{ background:#000; color:#fff; }
.btn-ghost{ background:var(--surface); color:var(--ink); border-color:var(--line-strong); }
.btn-ghost:hover{ background:var(--surface-2); color:var(--ink); }
.btn-sm{ padding:9px 14px; font-size:13.5px; }

/* ---------- Search ---------- */
.search{ position:relative; }
.search-box{ display:flex; align-items:center; gap:12px; background:var(--surface);
  border:1.5px solid var(--line-strong); border-radius:8px; padding:6px 6px 6px 16px; box-shadow:var(--shadow-sm);
  transition:border-color .15s, box-shadow .15s; }
.search-box:focus-within{ border-color:var(--accent); box-shadow:0 0 0 4px var(--accent-050); }
.search-box svg{ flex-shrink:0; color:var(--muted); }
.search-box input{ flex:1; border:none; outline:none; background:none; font-family:var(--font-body);
  font-size:17px; color:var(--ink); min-width:0; padding:10px 0; }
.search-box input::placeholder{ color:var(--muted); }
.search-box .btn{ flex-shrink:0; }
.search-hint{ margin-top:10px; font-size:13.5px; color:var(--muted); }
.search-hint b{ color:var(--ink-soft); font-family:var(--font-mono); font-weight:500; }

/* Global search results dropdown (home) */
.results{ position:absolute; left:0; right:0; top:calc(100% + 10px); background:var(--surface);
  border:1px solid var(--line-strong); border-radius:10px; box-shadow:var(--shadow-md); padding:8px;
  max-height:min(60vh,520px); overflow:auto; z-index:60; display:none; }
.results.open{ display:block; }
.results .res-head{ font-size:12px; letter-spacing:.06em; text-transform:uppercase; color:var(--muted);
  padding:8px 10px 6px; font-family:var(--font-mono); }
.res-item{ display:flex; gap:12px; align-items:center; padding:10px; border-radius:7px; color:var(--ink); }
.res-item:hover, .res-item:focus{ background:var(--surface-2); color:var(--ink); outline:none; }
.res-item .ri-thumb{ width:46px; height:46px; border-radius:5px; flex-shrink:0; object-fit:cover; background:var(--surface-2); border:1px solid var(--line); }
.res-item .ri-t{ font-size:14.5px; font-weight:600; line-height:1.3; }
.res-item .ri-tag{ font-family:var(--font-mono); font-size:11px; color:var(--accent); background:var(--accent-050);
  padding:2px 7px; border-radius:100px; margin-top:3px; display:inline-block; }
.res-empty{ padding:22px 12px; color:var(--muted); font-size:14.5px; text-align:center; }
mark{ background:#fde68a; color:inherit; border-radius:2px; padding:0 1px; }

/* ---------- Catalog ---------- */
.cat-head{ padding:clamp(36px,5vw,64px) 0 0; }
.cat-head .eyebrow{ margin-bottom:16px; }
.cat-head h1{ font-size:clamp(28px,3.6vw,42px); max-width:20ch; }
.cat-head p{ color:var(--ink-soft); max-width:75ch; margin:16px 0 0; }
.cat-toolbar{ position:sticky; top:var(--header-h); z-index:40; background:var(--bg);
  padding:18px 0; margin-top:24px; border-bottom:1px solid var(--line); }
.cat-toolbar .wrap{ display:flex; gap:16px; align-items:center; flex-wrap:wrap; }
.cat-toolbar .search{ flex:1; min-width:240px; }
.count{ font-family:var(--font-mono); font-size:13px; color:var(--muted); white-space:nowrap; }
.count b{ color:var(--ink); }

.grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(248px,1fr)); gap:clamp(14px,1.6vw,22px);
  padding-top:clamp(24px,3vw,36px); }
.card{ background:var(--surface); border:1px solid var(--line); border-radius:8px; overflow:hidden;
  display:flex; flex-direction:column; transition:border-color .15s, box-shadow .15s, transform .15s; }
.card:hover{ border-color:var(--line-strong); box-shadow:var(--shadow-md); transform:translateY(-2px); }
.card.hidden{ display:none; }
.card-media{ aspect-ratio:1/1; background:#fff; position:relative; overflow:hidden; border-bottom:1px solid var(--line); cursor:zoom-in; }
.card-media img{ position:absolute; inset:0; width:100%; height:100%; object-fit:contain; padding:12px; z-index:1; background:#fff; transition:transform .28s ease; }
.card-media:hover img{ transform:scale(1.07); }
.card-media .zoom-hint{ position:absolute; right:8px; bottom:8px; z-index:2; width:28px; height:28px; border-radius:6px;
  background:rgba(26,29,33,.62); color:#fff; display:grid; place-items:center; opacity:0; transform:translateY(4px); transition:.18s; pointer-events:none; }
.card-media:hover .zoom-hint{ opacity:1; transform:none; }
.ph{ position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:7px;
  background-image:repeating-linear-gradient(135deg,#edeee9 0 11px,#e6e7e1 11px 22px); color:#9aa0a6; text-align:center; padding:14px; }
.ph svg{ opacity:.5; }
.ph .ph-name{ font-family:var(--font-mono); font-size:11px; letter-spacing:.02em; color:#8b9197; }
.ph .ph-tag{ font-size:10.5px; letter-spacing:.08em; text-transform:uppercase; color:#aab0b6; }
.card-body{ padding:15px 16px 16px; display:flex; flex-direction:column; gap:12px; flex:1; }
.card-title{ font-size:14.5px; line-height:1.4; color:var(--ink); font-weight:600; }
.card-codes{ display:flex; flex-wrap:wrap; gap:5px; }
.code-chip{ font-family:var(--font-mono); font-size:11.5px; font-weight:500; color:var(--accent-700);
  background:var(--accent-050); border:1px solid #dbe6f2; padding:2px 8px; border-radius:100px; }
.card-cta{ margin-top:auto; display:flex; gap:8px; align-items:center; }
.card .ask{ flex:1; justify-content:center; }

.no-results{ display:none; padding:48px 0; text-align:center; color:var(--muted); }
.no-results.show{ display:block; }
.no-results svg{ opacity:.4; margin-bottom:12px; }

/* ---------- Prose / generic sections ---------- */
.prose{ max-width:72ch; }
.prose p{ color:var(--ink-soft); margin:0 0 18px; }
.prose h2{ font-size:clamp(24px,3vw,34px); margin:0 0 18px; }
.prose h3{ font-size:20px; margin:28px 0 10px; }
.lede{ font-size:clamp(18px,1.8vw,21px); color:var(--ink); }

.banner{ background:var(--surface-2); border:1px solid var(--line); border-left:3px solid var(--accent);
  border-radius:var(--radius); padding:16px 20px; color:var(--ink-soft); font-size:15px; }

.feature-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:18px; }
.feature{ background:var(--surface); border:1px solid var(--line); border-radius:8px; padding:24px; }
.feature .fnum{ font-family:var(--font-mono); font-size:13px; color:var(--accent); margin-bottom:12px; }
.feature h3{ font-size:18px; margin-bottom:8px; }
.feature p{ color:var(--muted); font-size:15px; margin:0; }

.split{ display:grid; grid-template-columns:1.1fr .9fr; gap:clamp(28px,5vw,64px); align-items:center; }

.media-frame{ background:#fff; border:1px solid var(--line); border-radius:8px; aspect-ratio:4/3;
  position:relative; overflow:hidden; cursor:zoom-in; }
.media-frame img{ position:absolute; inset:0; width:100%; height:100%; object-fit:contain; padding:16px; z-index:1; background:#fff; }
.media-frame.portrait{ aspect-ratio:3/4; }
.media-frame.contain{ background:#fff; }
.media-frame.contain img{ object-fit:contain; padding:20px; }
.spec-row{ display:flex; flex-wrap:wrap; gap:10px; margin:22px 0 26px; }
.spec{ background:var(--surface); border:1px solid var(--line); border-radius:8px; padding:12px 16px; min-width:104px; }
.spec .sv{ font-family:var(--font-head); font-weight:700; font-size:20px; color:var(--ink); line-height:1.1; }
.spec .sl{ font-family:var(--font-mono); font-size:11px; letter-spacing:.04em; text-transform:uppercase; color:var(--muted); margin-top:4px; }
.feat-list{ list-style:none; padding:0; margin:0; display:grid; grid-template-columns:1fr 1fr; gap:14px 32px; }
.feat-list li{ display:flex; gap:12px; align-items:flex-start; color:var(--ink-soft); font-size:15.5px; line-height:1.5; }
.feat-list li svg{ flex-shrink:0; color:var(--accent); margin-top:3px; }
.feat-list li b{ color:var(--ink); font-weight:600; }
@media (max-width:680px){ .feat-list{ grid-template-columns:1fr; } }

/* Series chooser (home) */
.series-grid{ display:grid; grid-template-columns:1fr 1fr; gap:20px; }
.series-card{ background:var(--surface); border:1px solid var(--line); border-radius:10px; padding:28px;
  display:flex; flex-direction:column; gap:14px; transition:border-color .15s, box-shadow .15s, transform .15s; color:var(--ink); }
.series-card:hover{ border-color:var(--accent); box-shadow:var(--shadow-md); transform:translateY(-3px); color:var(--ink); }
.series-card .sc-kicker{ font-family:var(--font-mono); font-size:12px; letter-spacing:.06em; text-transform:uppercase; color:var(--accent); }
.series-card h3{ font-size:26px; }
.series-card .sc-meta{ font-family:var(--font-mono); font-size:13px; color:var(--muted); margin-top:auto; }
.series-card .sc-arrow{ align-self:flex-start; font-weight:700; color:var(--accent); display:inline-flex; gap:6px; align-items:center; }

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(28px,5vw,56px); align-items:start; }
.info-list{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:2px; }
.info-row{ display:flex; gap:16px; padding:16px 0; border-bottom:1px solid var(--line); align-items:flex-start; }
.info-row:last-child{ border-bottom:none; }
.info-row .ic{ width:40px; height:40px; border-radius:7px; background:var(--accent-050); color:var(--accent);
  display:grid; place-items:center; flex-shrink:0; }
.info-row .lbl{ display:block; font-size:13px; letter-spacing:.06em; text-transform:uppercase; color:var(--muted); margin-bottom:5px; font-family:var(--font-mono); }
.info-row .val{ font-size:16px; color:var(--ink); font-weight:600; }
.info-row a.val:hover{ color:var(--accent); }

.form{ background:var(--surface); border:1px solid var(--line); border-radius:10px; padding:clamp(22px,3vw,32px); }
.form .row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.field{ margin-bottom:16px; }
.field label{ display:block; font-size:13.5px; font-weight:600; color:var(--ink-soft); margin-bottom:6px; }
.field label .req{ color:var(--warn); }
.field input, .field textarea{ width:100%; font-family:var(--font-body); font-size:16px; color:var(--ink);
  background:var(--bg); border:1.5px solid var(--line-strong); border-radius:var(--radius); padding:12px 14px; }
.field input:focus, .field textarea:focus{ outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-050); }
.field textarea{ resize:vertical; min-height:120px; }

/* ---------- Footer ---------- */
.site-footer{ background:var(--ink); color:#c9cdd3; margin-top:8px; }
.site-footer a{ color:#dfe3e8; }
.site-footer a:hover{ color:#fff; }
.footer-top{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:40px; padding:clamp(40px,5vw,64px) 0 36px; }
.footer-brand .logo{ font-family:var(--font-head); font-weight:800; font-size:22px; color:#fff; display:flex; align-items:center; gap:10px; }
.footer-brand .glyph{ width:34px; height:34px; border-radius:5px; background:var(--accent); color:#fff; display:grid; place-items:center; font-size:13px; font-weight:800; }
.footer-brand p{ color:#9aa0a8; font-size:14.5px; max-width:38ch; margin:16px 0 0; line-height:1.7; }
.footer-col h4{ color:#fff; font-size:13px; letter-spacing:.06em; text-transform:uppercase; font-family:var(--font-mono); margin-bottom:14px; font-weight:600; }
.footer-col ul{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:9px; font-size:14.5px; }
.footer-col .line{ color:#9aa0a8; font-size:14px; line-height:1.7; }
.footer-bottom{ border-top:1px solid #2d3138; padding:20px 0; display:flex; justify-content:space-between;
  gap:14px; flex-wrap:wrap; font-size:13px; color:#868c94; font-family:var(--font-mono); }

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .nav{ position:fixed; inset:var(--header-h) 0 auto 0; flex-direction:column; align-items:stretch; gap:2px;
    background:var(--surface); border-bottom:1px solid var(--line); padding:14px clamp(18px,4vw,40px) 22px;
    box-shadow:var(--shadow-md); transform:translateY(-12px); opacity:0; pointer-events:none; transition:.18s; }
  body.menu-open .nav{ transform:none; opacity:1; pointer-events:auto; }
  .nav a{ padding:13px 12px; font-size:16px; border-bottom:1px solid var(--line); border-radius:0; }
  .nav a:last-child{ border-bottom:none; }
  .nav a.pill{ border-radius:var(--radius); margin-top:8px; text-align:center; }
  .nav a.pill.alt{ margin-top:0; }
  .menu-toggle{ display:flex; }
  .hero-grid{ grid-template-columns:1fr; }
  .hero-aside{ order:-1; }
  .split{ grid-template-columns:1fr; }
  .series-grid{ grid-template-columns:1fr; }
  .contact-grid{ grid-template-columns:1fr; }
  .footer-top{ grid-template-columns:1fr 1fr; gap:28px; }
  .footer-brand{ grid-column:1 / -1; }
}
@media (max-width:520px){
  body{ font-size:16px; }
  .form .row{ grid-template-columns:1fr; }
  .footer-top{ grid-template-columns:1fr; }
  .grid{ grid-template-columns:repeat(auto-fill,minmax(160px,1fr)); gap:12px; }
  .card-title{ font-size:13.5px; }
  .brand small{ display:none; }
}

/* ---------- Brand chip mark (header logo) ---------- */
.brand .wm-chip{ height:46px; width:auto; display:block; flex-shrink:0; }
.brand .wm-tag{ font-family:'Playfair Display', Georgia, serif; font-style:italic; font-weight:600; font-size:12.5px; line-height:1.22; letter-spacing:.03em; color:var(--ink-soft); }
@media (max-width:520px){ .brand .wm-chip{ height:40px; } .brand .wm-tag{ font-size:11.5px; } }

/* ---------- Footer insegna (gate sign) ---------- */
.footer-insegna{ display:inline-block; background:#fff; border-radius:8px; padding:14px 18px; box-shadow:var(--shadow-sm); max-width:340px; }
.footer-insegna img{ width:100%; height:auto; display:block; }

/* ---------- Lightbox (zoom foto) ---------- */
.lightbox{ position:fixed; inset:0; z-index:300; background:rgba(15,18,22,.86); backdrop-filter:blur(3px);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:18px; padding:clamp(20px,5vw,64px);
  opacity:0; pointer-events:none; transition:opacity .2s; }
.lightbox.open{ opacity:1; pointer-events:auto; }
.lightbox img{ max-width:min(92vw,900px); max-height:78vh; width:auto; height:auto; object-fit:contain;
  background:#fff; border-radius:8px; padding:clamp(12px,2vw,28px); box-shadow:0 24px 60px rgba(0,0,0,.5);
  transform:scale(.96); transition:transform .2s; }
.lightbox.open img{ transform:none; }
.lightbox .lb-cap{ color:#eef0f3; font-size:15.5px; font-weight:600; text-align:center; max-width:60ch; line-height:1.5; }
.lightbox .lb-close{ position:absolute; top:18px; right:18px; width:46px; height:46px; border-radius:50%;
  background:rgba(255,255,255,.12); border:1px solid rgba(255,255,255,.25); color:#fff; cursor:pointer;
  display:grid; place-items:center; transition:background .15s; }
.lightbox .lb-close:hover{ background:rgba(255,255,255,.24); }

/* print */
@media (max-width:600px){
  .footer-top{ text-align:center; }
  .footer-insegna{ margin-left:auto; margin-right:auto; }
  .footer-brand p{ margin-left:auto; margin-right:auto; }
  .footer-brand .logo{ justify-content:center; }
  .footer-col ul{ align-items:center; }
  .footer-bottom{ justify-content:center; text-align:center; }
}
@media print{ .site-header,.cat-toolbar,.site-footer,.hero-actions,.lightbox{ display:none; } .card{ break-inside:avoid; }
  .card-media img{ object-fit:contain; } }