/* Acqua di Bergamo — design system */
:root{
  --bg:#f7fbfc; --surface:#ffffff; --ink:#0f2231; --muted:#5d7480; --line:#e3edf0;
  --teal-50:#ecfaff; --teal-100:#cdeef5; --teal-300:#5cc4d8; --teal:#0e8aa6; --teal-700:#0e7490; --teal-900:#0a4f63;
  --earth:#b08968; --leaf:#5a8f6b; --amber:#ca8a04; --red:#dc2626;
  --shadow:0 1px 2px rgba(15,34,49,.04),0 8px 30px rgba(15,34,49,.07);
  --shadow-lg:0 10px 40px rgba(14,116,144,.14);
  --r:18px; --rs:12px; --maxw:1180px;
  --serif:'Fraunces',Georgia,serif; --sans:'Inter',system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.55;-webkit-font-smoothing:antialiased}
h1,h2,h3{line-height:1.12;margin:0}
a{color:var(--teal-700);text-decoration:none}
a:hover{text-decoration:underline}
.muted{color:var(--muted)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.eyebrow{font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--teal);margin:0 0 10px}
.disclaimer{font-size:.78rem;color:var(--muted);margin-top:14px}
.unit{color:var(--muted);font-weight:500;font-size:.85em}

/* Header */
.site-header{position:sticky;top:0;z-index:1000;display:flex;align-items:center;gap:20px;
  padding:12px 20px;background:rgba(255,255,255,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.brand{font-size:1.12rem;color:var(--ink);font-weight:600;display:flex;align-items:center;gap:6px}
.brand strong{color:var(--teal-700)}
.brand:hover{text-decoration:none}
.drop{filter:saturate(1.2)}
.nav{display:flex;gap:4px;margin-left:8px}
.nav a{padding:8px 14px;border-radius:999px;color:var(--muted);font-weight:600;font-size:.92rem}
.nav a:hover{background:var(--teal-50);color:var(--teal-700);text-decoration:none}
.nav a.active{background:var(--teal-700);color:#fff}
.header-search{margin-left:auto}
.comune-search{font-family:inherit;font-size:.9rem;padding:9px 14px;border:1px solid var(--line);border-radius:999px;
  background:var(--surface);min-width:200px;color:var(--ink)}
.comune-search:focus{outline:none;border-color:var(--teal-300);box-shadow:0 0 0 3px var(--teal-50)}

/* Hero */
.hero{background:
  radial-gradient(1100px 500px at 78% -10%,var(--teal-100),transparent 60%),
  radial-gradient(800px 400px at 0% 0%,#e8f7ee,transparent 55%),
  linear-gradient(180deg,#fbfeff,var(--bg));
  padding:64px 20px 40px;border-bottom:1px solid var(--line)}
.hero-inner{max-width:var(--maxw);margin:0 auto}
.hero h1{font-family:var(--serif);font-weight:600;font-size:clamp(2.1rem,5vw,3.6rem);letter-spacing:-.01em;margin-bottom:16px}
.hero h1 em{font-style:italic;color:var(--teal-700)}
.hero-sub{font-size:1.12rem;color:var(--muted);max-width:620px;margin:0 0 24px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:36px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:700;font-size:.92rem;
  border:2px solid transparent;cursor:pointer;transition:transform .12s,box-shadow .2s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--teal-700);color:#fff;box-shadow:var(--shadow-lg)}
.btn-ghost{background:transparent;border-color:var(--teal-300);color:var(--teal-700)}
.hero-stats{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--shadow)}
.stat-big{display:block;font-family:var(--serif);font-size:1.7rem;font-weight:600;color:var(--teal-900);line-height:1}
.stat-lab{display:block;font-weight:600;margin-top:8px;font-size:.92rem}
.stat-sub{display:block;color:var(--muted);font-size:.8rem}

/* Views */
main{padding:40px 0 60px}
.view-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:22px}
.view-head h2{font-family:var(--serif);font-weight:600;font-size:clamp(1.6rem,3.4vw,2.3rem)}
.view-desc{color:var(--muted);margin:6px 0 0}
.view-tools{display:flex;gap:12px;align-items:center}
.tool{font-size:.82rem;color:var(--muted);font-weight:600;display:flex;flex-direction:column;gap:4px}
.section-lead{font-size:1.15rem;color:var(--ink);max-width:760px;margin:0 0 26px}

.mini-select,select{font-family:inherit;font-size:.9rem;padding:9px 12px;border:1px solid var(--line);border-radius:var(--rs);background:var(--surface);color:var(--ink);font-weight:600}
.mini-select:focus,select:focus{outline:none;border-color:var(--teal-300)}

/* Map */
.map-wrap{position:relative;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
#map{height:560px;width:100%;background:#eef4f6}
.map-legend{position:absolute;right:14px;bottom:14px;z-index:500;background:rgba(255,255,255,.95);
  border:1px solid var(--line);border-radius:var(--rs);padding:12px 14px;box-shadow:var(--shadow);font-size:.78rem;max-width:230px}
.lg-title{font-weight:700;margin-bottom:8px}
.lg-scale{display:flex;flex-direction:column;gap:4px}
.lg-item{display:flex;align-items:center;gap:8px}
.lg-item i{width:16px;height:12px;border-radius:3px;display:inline-block}
.leaflet-container{font-family:var(--sans)}

/* Cards */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow);margin-bottom:22px}
.card h3{font-family:var(--serif);font-weight:600;font-size:1.25rem;margin-bottom:4px}
.card-sub{color:var(--muted);font-size:.88rem;margin:6px 0 16px}
.card-head-row{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:6px}
.card.feature{border-color:var(--teal-100);background:linear-gradient(180deg,#fbfeff,#fff)}
.chart-box{position:relative;height:300px}
.chart-box.tall{height:380px}

/* Detail */
.detail-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;flex-wrap:wrap;margin-bottom:20px}
.detail-title{font-family:var(--serif);font-weight:600;font-size:clamp(1.8rem,4vw,2.6rem);color:var(--teal-900)}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}
.chip{font-size:.78rem;font-weight:700;padding:6px 12px;border-radius:999px;background:var(--teal-50);color:var(--teal-700)}
.chip-oligo{background:#e7f6ee;color:#2f7a4d}.chip-min{background:#e6f7fb;color:#0e7490}
.chip-media{background:#fdf3e3;color:#a9690a}.chip-out{background:#eef2f4;color:#475569}
.detail-point{color:var(--muted);font-size:.9rem;margin:6px 0 0}
.src-link{font-weight:700;font-size:.85rem;white-space:nowrap}
.detail-insights{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px;margin-bottom:22px}
.insight{display:flex;gap:12px;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--teal-300);border-radius:var(--rs);padding:14px 16px;box-shadow:var(--shadow)}
.insight .ic{font-size:1.3rem;line-height:1}
.insight p{margin:0;font-size:.9rem}
.detail-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:22px}

/* Fingerprint SVG */
.fp-track{stroke:#e3edf0;stroke-width:6;stroke-linecap:round}
.fp-band{fill:var(--teal-100);opacity:.8}
.fp-median{stroke:#94a3b8;stroke-width:2}
.fp-dot{fill:var(--teal-700);stroke:#fff;stroke-width:2}
.fp-lab{font-size:13px;font-weight:700;fill:var(--ink)}
.fp-sub{font-size:9.5px;fill:var(--muted)}
.fp-val{font-size:12.5px;font-weight:700;fill:var(--teal-900)}
.fp-val.muted{fill:var(--muted)}

/* Ternary */
.tern-tri{fill:#f4fafb;stroke:var(--teal-300);stroke-width:1.5}
.tern-grid{stroke:#e3edf0;stroke-width:1}
.tern-lab{font-size:12px;font-weight:700;fill:var(--teal-900)}
.tern-dot{fill:var(--earth);stroke:#fff;stroke-width:2.5}
.tern-caption{font-size:.85rem;color:var(--muted);margin:10px 0 0;text-align:center}

/* Table */
.table-wrap{overflow-x:auto}
.ptable{width:100%;border-collapse:collapse;font-size:.9rem}
.ptable th{text-align:left;font-size:.74rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);padding:10px 12px;border-bottom:2px solid var(--line)}
.ptable td{padding:11px 12px;border-bottom:1px solid var(--line)}
.ptable tr:hover td{background:var(--teal-50)}
.ptable .num{text-align:right;font-variant-numeric:tabular-nums}
.pname{font-weight:600}.psym{color:var(--muted);font-size:.8em;margin-left:4px}
.lim{color:var(--muted)}

/* Compare */
.cmp-controls{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--shadow);margin-bottom:20px}
.cmp-pickers{display:flex;gap:16px;flex-wrap:wrap}
.cmp-pickers label{display:flex;flex-direction:column;gap:6px;font-size:.8rem;font-weight:700;color:var(--muted)}
.cmp-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.cmp-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 8px 6px 12px;border-radius:999px;font-size:.85rem;font-weight:600;background:var(--teal-50);color:var(--teal-900)}
.cmp-tag.bottled{background:#f6efe8;color:#7c5a3a}
.cmp-tag button{border:none;background:rgba(0,0,0,.08);border-radius:50%;width:20px;height:20px;cursor:pointer;font-size:.9rem;line-height:1;color:inherit}
.cmp-tag button:hover{background:rgba(0,0,0,.18)}

/* Geology */
.geo-split{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start;margin-top:10px}
.geo-text p{margin:0 0 12px}
.corrnote{background:var(--teal-50);border-radius:var(--rs);padding:12px 14px;font-size:.9rem}
.geo-cards{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.geo-cards p{margin:0;color:#26424f;font-size:.95rem}
.zone-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.zone{display:flex;gap:12px;align-items:flex-start}
.zone .zdot{width:14px;height:14px;border-radius:50%;margin-top:5px;flex:0 0 auto}
.zone p{margin:4px 0 0;font-size:.88rem;color:var(--muted)}
.sources{font-size:.78rem;color:var(--muted);font-style:italic;margin-top:6px}

/* Correlation bars */
.cbar{display:grid;grid-template-columns:160px 1fr 52px;align-items:center;gap:12px;margin:8px 0}
.cbar-lab{font-size:.85rem;font-weight:600;text-align:right}
.cbar-track{position:relative;height:16px;background:#f1f5f7;border-radius:8px}
.cbar-mid{position:absolute;left:50%;top:-3px;bottom:-3px;width:1px;background:#c3d2d8}
.cbar-fill{position:absolute;top:0;height:16px}
.cbar-fill.neg{background:linear-gradient(90deg,var(--teal-700),var(--teal-300));border-radius:8px 0 0 8px}
.cbar-fill.pos{background:linear-gradient(90deg,#e0b341,var(--amber));border-radius:0 8px 8px 0}
.cbar-val{font-variant-numeric:tabular-nums;font-weight:700;font-size:.85rem;color:var(--teal-900)}

/* Footer */
.site-footer{background:#06303c;color:#bcd6dd;padding:40px 0;margin-top:40px}
.foot-grid{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.foot-brand{font-size:1.1rem;color:#fff;font-weight:600;margin:0 0 6px}
.site-footer a{color:#7fd6e8}
.site-footer .muted{color:#8fb2bc}
.boot-error{background:#fee;color:#900;padding:16px;border-radius:8px;margin:20px}

/* Responsive */
@media(max-width:880px){
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .detail-grid,.geo-split,.geo-cards,.zone-grid{grid-template-columns:1fr}
  .nav{display:none}
  .header-search{margin-left:auto}
  #map{height:440px}
}
@media(max-width:520px){
  .hero-stats{grid-template-columns:1fr 1fr}
  .cbar{grid-template-columns:110px 1fr 44px}
  .comune-search{min-width:140px}
}