/* ============================================================
   Osservatorio zeroCO2 — Home & Conferma
   Estende l'identità del questionario: Woodland Fern + Space Grotesk
   + IBM Plex Mono, accento Tropical Orange usato con parsimonia.
   ============================================================ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;color:inherit}

:root{
  --fern-deep:#0E261B;
  --fern:#1F4D37;
  --fern-soft:#143524;
  --green:#00B985;
  --green-back:#BEEDE0;
  --berry:#BBCCFF;
  --lotus:#FDF4ED;
  --orange:#F2791D;
  --ink:#163827;            /* ink on light */
  --ink-dim:rgba(22,56,39,.64);
  --ink-mute:rgba(22,56,39,.42);
  --paper:#FDF4ED;          /* light section bg */
  --paper-2:#F6E8DC;
  --on-dark:#FDF4ED;
  --on-dark-dim:rgba(253,244,237,.66);
  --on-dark-mute:rgba(253,244,237,.40);
  --line-dark:rgba(253,244,237,.15);
  --line-light:rgba(22,56,39,.14);
  --maxw:1140px;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:"Poppins",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}

body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  line-height:1.5;
}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* ---------- shared eyebrow / mono label ---------- */
.eyebrow{
  margin:0;
  font-family:var(--mono);font-size:12px;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:9px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--berry)}

/* ---------- buttons ---------- */
/* Bottoni allineati al questionario (.btn-primary verde, ghost outlined) */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:inherit;
  font-size:16px;font-weight:600;letter-spacing:-.005em;line-height:1;
  padding:13px 22px;
  border-radius:14px;
  border:1px solid transparent;
  transition:background .18s ease,border-color .18s ease,opacity .2s ease,transform .12s ease;
  cursor:pointer;
}
.btn:active{transform:translateY(1px)}
.btn svg{width:17px;height:17px}

.btn-primary{background:var(--green);color:#06281D;border-color:var(--green)}
.btn-primary:hover{opacity:.9}

.btn-ghost-d{background:transparent;border-color:var(--line-dark);color:var(--on-dark)}
.btn-ghost-d:hover{background:rgba(253,244,237,.04)}

.btn-ghost-l{background:transparent;border-color:var(--line-light);color:var(--ink)}
.btn-ghost-l:hover{background:rgba(22,56,39,.04)}

.btn-lg{padding:15px 26px;font-size:17px}

/* ============================================================
   NAV
   ============================================================ */
.nav{position:relative;z-index:5}
.nav-in{display:flex;align-items:center;justify-content:space-between;
  padding:22px 0;gap:18px}
.nav-logo{height:60px;width:auto}
.nav-logo svg, .nav-logo img{height:60px;width:auto}
.nav-links{display:none;gap:30px;align-items:center}
.nav-links a{font-size:14.5px;color:var(--on-dark-dim);transition:color .15s}
.nav-links a:hover{color:var(--on-dark)}
.nav-cta{font-family:var(--sans)}
@media(min-width:860px){.nav-links{display:flex}}

/* ============================================================
   HERO (dark)
   ============================================================ */
.hero{
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(0,185,133,.16), transparent 60%),
    var(--fern-deep);
  color:var(--on-dark);
  position:relative;overflow:hidden;
}
.hero::after{ /* hairline base separating to the light section */
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--line-dark);
}
.hero-grid{
  display:grid;grid-template-columns:1fr;gap:46px;
  padding:30px 0 72px;
}
.hero-eyebrow{color:var(--green)}
.hero h1{
  font-size:clamp(38px,7.2vw,68px);line-height:1.02;
  letter-spacing:-.022em;font-weight:700;margin:22px 0 0;
  max-width:14ch;
}
.hero h1 em{font-style:italic;color:var(--green)}
.hero-sub{
  margin:22px 0 0;font-size:clamp(16px,2.1vw,19px);
  color:var(--on-dark-dim);max-width:46ch;line-height:1.55;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-note{
  font-family:var(--mono);font-size:12px;color:var(--on-dark-mute);
  margin-top:20px;letter-spacing:.04em;
}

/* floating fact cards */
.facts{display:grid;gap:14px}
.fact{
  border:1px solid var(--line-dark);border-radius:8px;
  background:rgba(255,255,255,.035);
  padding:20px 22px;display:flex;flex-direction:column;gap:8px;
  transition:border-color .2s,background .2s,transform .2s;
}
.fact:hover{border-color:rgba(0,185,133,.5);background:rgba(0,185,133,.07);transform:translateY(-2px)}
.fact-top{display:flex;align-items:center;gap:9px}
.fact-tick{width:7px;height:7px;border-radius:50%;background:var(--berry)}
.fact-cap{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--on-dark-mute)}
.fact-n{font-size:32px;font-weight:600;letter-spacing:-.02em;line-height:1}
.fact-t{font-size:13.5px;color:var(--on-dark-dim);line-height:1.4}

@media(min-width:920px){
  .hero-grid{grid-template-columns:1.18fr .82fr;align-items:center;gap:54px;padding:42px 0 92px}
  .facts{gap:16px}
}

/* ---------- credit strip ---------- */
.credit{background:var(--fern-deep);color:var(--on-dark);padding:26px 0 40px}
.credit-in{display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  border-top:1px solid var(--line-dark);padding-top:26px}
.credit-label{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--on-dark-mute)}
.credit-logo{height:26px;opacity:.95}
.credit-logo svg,.credit-logo img{height:26px;width:auto}
.credit-tag{font-size:13.5px;color:var(--on-dark-dim)}
.credit-tag b{color:var(--on-dark);font-weight:600}

/* ============================================================
   WHY (light) — 3 cards
   ============================================================ */
.section{padding:74px 0}
.section-head{max-width:62ch}
.section-head .eyebrow{color:var(--ink)}
.section-head h2{
  font-size:clamp(28px,4.4vw,42px);line-height:1.08;letter-spacing:-.02em;
  font-weight:700;margin:16px 0 0;
}
.section-head h2 em{font-style:italic;color:var(--green)}
.section-head p{margin:16px 0 0;font-size:17px;color:var(--ink-dim);max-width:54ch}

.cards3{display:grid;grid-template-columns:1fr;gap:18px;margin-top:42px}
@media(min-width:760px){.cards3{grid-template-columns:repeat(3,1fr)}}
.card{
  border:1px solid var(--line-light);border-radius:10px;background:#fff;
  padding:26px 24px 28px;display:flex;flex-direction:column;
  transition:border-color .2s,transform .2s,box-shadow .2s;
}
.card:hover{border-color:var(--green);transform:translateY(-3px);
  box-shadow:0 12px 30px -18px rgba(31,77,55,.4)}
.card-idx{font-family:var(--mono);font-size:12px;letter-spacing:.12em;
  color:var(--ink-mute)}
.card-visual{
  height:96px;margin:14px 0 18px;border-radius:8px;
  background:var(--paper);border:1px solid var(--line-light);
  display:flex;align-items:flex-end;gap:6px;padding:14px 16px;overflow:hidden;
}
.card h3{font-size:19px;font-weight:600;letter-spacing:-.01em;margin:0}
.card p{margin:9px 0 0;font-size:14.5px;color:var(--ink-dim);line-height:1.5}

/* mini-visuals */
.bars{align-items:flex-end}
.bars i{flex:1;background:var(--green-back);border-radius:3px 3px 0 0}
.bars i.hi{background:var(--green)}
.donut{align-items:center;justify-content:center}
.ring{width:62px;height:62px;border-radius:50%;
  background:conic-gradient(var(--green) 0 64%, var(--paper-2) 0);
  display:flex;align-items:center;justify-content:center}
.ring span{width:42px;height:42px;border-radius:50%;background:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:13px;font-weight:600;color:var(--ink)}
.mailrow{align-items:center;gap:10px}
.chip{font-family:var(--mono);font-size:11px;color:var(--ink-dim);
  border:1px solid var(--line-light);border-radius:999px;padding:6px 11px;background:#fff}

/* ============================================================
   AREAS — the 8 thematic areas (a real sequence → numbered)
   ============================================================ */
.areas-sec{background:var(--fern-deep);color:var(--on-dark)}
.areas-sec .section-head .eyebrow{color:var(--green)}
.areas-sec .section-head p{color:var(--on-dark-dim)}
.areas{
  display:grid;grid-template-columns:1fr;gap:0;margin-top:40px;
  border-top:1px solid var(--line-dark);
}
@media(min-width:680px){.areas{grid-template-columns:1fr 1fr}}
.area{
  display:flex;gap:16px;align-items:flex-start;
  padding:20px 4px;border-bottom:1px solid var(--line-dark);
}
.area-n{margin-top:2px}
@media(min-width:680px){.area:nth-child(odd){border-right:1px solid var(--line-dark);padding-right:26px}
  .area:nth-child(even){padding-left:26px}}
.area-n{font-family:var(--mono);font-size:13px;color:var(--green);min-width:26px}
.area-t{font-size:16.5px;font-weight:600}
.area-s{font-size:13.5px;color:var(--on-dark-dim);margin-top:3px}
.area-desc{font-size:13px;color:var(--on-dark-mute);margin:8px 0 0;line-height:1.5;max-width:44ch}

/* ============================================================
   CONTEXT BLOCK — sintesi per lettori umani e tools AI
   ============================================================ */
.context-sec{padding-top:64px;padding-bottom:56px}
.context-eyebrow{color:var(--ink);margin-bottom:20px}
.context-card{
  background:#fff;border:1px solid var(--line-light);border-radius:14px;
  padding:38px;
  box-shadow:0 16px 40px -28px rgba(31,77,55,.4);
  display:grid;gap:34px;align-items:center;
}
@media(min-width:840px){
  .context-card{grid-template-columns:1.3fr 1fr;padding:44px 30px 44px 46px}
}
.context-block{display:grid;gap:16px}
.context-block p{margin:0;font-size:16.5px;color:var(--ink-dim);line-height:1.72}
.context-lead{font-size:22px;font-weight:600;color:var(--ink);line-height:1.48}
.context-block em{font-style:italic;color:var(--green)}
.context-block strong{font-weight:700;color:var(--ink)}
.context-block .hl{font-weight:700;color:var(--green)}
.context-visual{display:flex;justify-content:center}
.context-visual img{width:100%;max-width:320px;height:auto;border-radius:10px}
@media(min-width:840px){.context-visual img{max-width:none}}

/* ============================================================
   FAQ
   ============================================================ */
.faq-list{margin-top:36px;display:grid;gap:12px}
.faq-item{
  border:1px solid var(--line-light);border-radius:10px;background:#fff;
  padding:4px 22px;
}
.faq-q{
  cursor:pointer;list-style:none;
  padding:18px 28px 18px 0;position:relative;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{
  content:"+";position:absolute;right:0;top:16px;
  font-size:20px;font-weight:400;color:var(--green);line-height:1;
}
.faq-item[open] .faq-q::after{content:"–"}
.faq-answer{padding:0 0 20px}
.faq-answer p{margin:0;font-size:14.5px;color:var(--ink-dim);line-height:1.6;max-width:64ch}

/* ============================================================
   CTA band
   ============================================================ */
.ctaband{background:var(--fern);color:var(--on-dark);text-align:center;
  padding:78px 0}
.ctaband h2{font-size:clamp(26px,4vw,40px);line-height:1.1;letter-spacing:-.02em;
  margin:14px auto 0;max-width:20ch}
.ctaband h2 em{font-style:italic;color:var(--green)}
.ctaband p{margin:16px auto 0;color:var(--on-dark-dim);max-width:46ch;font-size:16px}
.ctaband .btn{margin-top:30px}
.ctaband .eyebrow{color:var(--green)}
.ctaband .center{display:flex;justify-content:center}

/* ============================================================
   FOOTER
   ============================================================ */
.foot{background:var(--fern-deep);color:var(--on-dark);padding:48px 0}
.foot-in{display:flex;flex-direction:column;gap:22px;
  border-top:1px solid var(--line-dark);padding-top:36px}
.foot-logo{height:34px}
.foot-logo svg,.foot-logo img{height:34px;width:auto}
.foot-row{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:center}
.foot-links{display:flex;flex-wrap:wrap;gap:22px}
.foot-links a{font-size:14px;color:var(--on-dark-dim)}
.foot-links a:hover{color:var(--on-dark)}
.foot-fine{font-family:var(--mono);font-size:11.5px;color:var(--on-dark-mute);
  letter-spacing:.04em}

/* ============================================================
   CONFERMA (grazie.html)
   ============================================================ */
.thanks{min-height:100vh;display:flex;flex-direction:column;
  background:
    radial-gradient(110% 80% at 80% -10%, rgba(0,185,133,.16), transparent 60%),
    var(--fern-deep);
  color:var(--on-dark)}
.thanks-main{flex:1;display:flex;align-items:center;padding:60px 0}
.thanks-card{max-width:620px}
.thanks-badge{width:60px;height:60px;border-radius:50%;
  background:rgba(0,185,133,.16);border:1px solid rgba(0,185,133,.5);
  display:flex;align-items:center;justify-content:center;margin-bottom:26px}
.thanks-badge svg{width:30px;height:30px;stroke:var(--green)}
.thanks h1{font-size:clamp(30px,5vw,48px);line-height:1.06;letter-spacing:-.02em;
  font-weight:700;margin:0}
.thanks h1 em{font-style:italic;color:var(--green)}
.thanks-lead{margin:20px 0 0;font-size:17px;color:var(--on-dark-dim);
  max-width:48ch;line-height:1.55}
.thanks-next{margin:34px 0 0;border-top:1px solid var(--line-dark);padding-top:26px;
  display:grid;gap:16px}
.tn{display:flex;gap:14px;align-items:flex-start}
.tn-n{font-family:var(--mono);font-size:12px;color:var(--green);min-width:22px;margin-top:2px}
.tn-t{font-size:15px;color:var(--on-dark-dim)}
.tn-t b{color:var(--on-dark);font-weight:600}
.thanks-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}

/* ============================================================
   Motion / a11y
   ============================================================ */
.reveal{opacity:0;transform:translateY(14px);animation:rise .7s cubic-bezier(.2,.7,.2,1) forwards}
.d1{animation-delay:.05s}.d2{animation-delay:.14s}.d3{animation-delay:.23s}.d4{animation-delay:.32s}
@keyframes rise{to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){
  .reveal{animation:none;opacity:1;transform:none}
  .btn,.fact,.card{transition:none}
}
:focus-visible{outline:2px solid var(--green);outline-offset:3px;border-radius:4px}

/* ============================================================
   THANK YOU — UI ottimizzata
   ============================================================ */
.thanks-main { padding: 80px 0 !important; }
.thanks-card {
  max-width: 760px;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--line-dark);
  border-radius: 14px;
  padding: 48px 48px 44px;
  backdrop-filter: blur(2px);
}
.thanks-badge {
  width: 70px; height: 70px;
  background: linear-gradient(140deg, rgba(0,185,133,.22), rgba(0,185,133,.08));
  border: 1px solid rgba(0,185,133,.45);
}
.thanks-badge svg { width: 34px; height: 34px; }
.thanks h1 { max-width: 18ch; }
.thanks-lead { font-size: 18px; max-width: 56ch; }
.thanks-next {
  margin-top: 36px;
  padding-top: 28px;
  display: grid; gap: 14px;
}
.tn {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 14px 16px;
  background: rgba(187,204,255,.06);
  border: 1px solid rgba(187,204,255,.18);
  border-radius: 10px;
}
.tn-n {
  font-family: var(--mono);
  font-size: 12px; letter-spacing: .12em;
  color: var(--berry);
  min-width: 24px; margin-top: 4px;
}
.tn-t { font-size: 15px; }
.thanks-cta { gap: 12px; margin-top: 32px; }

@media (max-width: 640px) {
  .thanks-card { padding: 32px 22px; }
  .thanks-next { padding-top: 20px; }
}