:root {
  --ink: #16231d;
  --ink-2: #3c4a43;
  --muted: #6b7871;
  --paper: #f6f4ef;
  --card: #ffffff;
  --line: #e2ded4;
  --moss: #2f6b4f;
  --moss-2: #245840;
  --moss-soft: #e5efe9;
  --ochre: #b8892a;
  --ochre-soft: #f6ecd6;
  --red: #a63d32;
  --red-soft: #f7e3e0;
  --radius: 14px;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #e9ede9;
    --ink-2: #c3ccc6;
    --muted: #94a199;
    --paper: #111a16;
    --card: #18241e;
    --line: #2a3a32;
    --moss: #6fbf95;
    --moss-2: #8ad1aa;
    --moss-soft: #1d3329;
    --ochre: #e0b65a;
    --ochre-soft: #3a3020;
    --red: #e88b80;
    --red-soft: #3c2320;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
[id] { scroll-margin-top: 80px; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: var(--moss); }
a:hover { color: var(--moss-2); }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.15; margin: 0 0 .5em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }

.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 8px; background: var(--card); padding: 8px 12px; z-index: 10; }

/* Header */
.top { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-family: var(--serif); font-size: 1.25rem; font-weight: 600; }
.brand svg { color: var(--moss); flex: none; }
.nav { display: flex; gap: 22px; align-items: center; }
.nav a { color: var(--ink-2); text-decoration: none; font-size: .95rem; }
.nav a:hover { color: var(--moss); }
.nav .lang { border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; font-size: .8rem; font-weight: 600; }
@media (max-width: 760px) { .nav a:not(.lang) { display: none; } }

/* Hero */
.hero { padding: 72px 0 56px; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; color: var(--moss); font-weight: 600; }
.hero h1 { font-size: clamp(2.2rem, 5.4vw, 4rem); max-width: 18ch; }
.hero h1 em { font-style: italic; font-weight: 400; color: var(--moss); }
.lead { font-size: 1.15rem; color: var(--ink-2); max-width: 60ch; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 40px; }
.facts { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; border-top: 1px solid var(--line); padding-top: 24px; }
.facts li { display: flex; flex-direction: column; }
.facts strong { font-family: var(--serif); font-size: 1.15rem; }
.facts span { color: var(--muted); font-size: .9rem; }
@media (max-width: 640px) { .facts { grid-template-columns: 1fr; } }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 22px; border-radius: 999px; border: 1px solid var(--moss); background: var(--moss); color: #fff; font: 600 .95rem var(--sans); text-decoration: none; cursor: pointer; transition: background .15s, transform .15s; }
.btn:hover { background: var(--moss-2); color: #fff; }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; color: var(--moss); }
.btn.ghost:hover { background: var(--moss-soft); }
.btn.link { background: none; border-color: transparent; color: var(--muted); padding: 0 8px; }
.btn[disabled] { opacity: .6; cursor: progress; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .btn:not(.ghost):not(.link) { color: #0f1a14; } }

/* Bands */
.band { padding: 72px 0; background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.steps { list-style: none; padding: 0; margin: 32px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.steps li { position: relative; }
.steps .n { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: var(--moss-soft); color: var(--moss); font-weight: 600; margin-bottom: 12px; }
.steps p { color: var(--ink-2); }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } }

.two { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: start; }
@media (max-width: 860px) { .two { grid-template-columns: 1fr; gap: 28px; } }

/* Calculator */
.calc-section { padding: 72px 0; }
.sub { color: var(--muted); margin-bottom: 28px; }
.calc { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 20px 20px; }
@media (min-width: 720px) { .calc { padding: 12px 32px 28px; } }
fieldset { border: 0; border-bottom: 1px solid var(--line); margin: 0; padding: 20px 0; min-width: 0; }
legend { font-family: var(--serif); font-size: 1.2rem; font-weight: 600; padding: 0; display: flex; align-items: center; gap: 10px; float: left; width: 100%; margin-bottom: 12px; }
legend + * { clear: both; }
label { display: flex; flex-direction: column; gap: 6px; font-size: .85rem; color: var(--ink-2); font-weight: 500; min-width: 0; }
input, select {
  width: 100%; min-height: 44px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--paper); color: var(--ink); font: 400 1rem var(--sans);
}
input:focus, select:focus { outline: 2px solid var(--moss); outline-offset: 1px; border-color: transparent; }
input.bad, select.bad { border-color: var(--red); background: var(--red-soft); }
.grid3 { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 14px; }
@media (max-width: 640px) { .grid3 { grid-template-columns: 1fr; } }
.hint { color: var(--muted); font-size: .88rem; }

.rows { display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; }
.row { display: grid; gap: 10px; align-items: end; padding: 12px; border: 1px solid var(--line); border-radius: 12px; background: color-mix(in srgb, var(--paper) 60%, var(--card)); }
.row.comp { grid-template-columns: 2fr 1fr auto; }
.row.stage { grid-template-columns: 1.3fr 1.3fr 1fr 1fr 1fr auto; }
.row.leg { grid-template-columns: 2fr 1fr auto; }
.row .epd { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 2fr; gap: 10px; padding: 10px; border-radius: 10px; background: var(--ochre-soft); }
.row .epd p { grid-column: 1 / -1; margin: 0; font-size: .85rem; color: var(--ink-2); }
.del { width: 44px; height: 44px; border-radius: 10px; border: 1px solid var(--line); background: transparent; color: var(--muted); font-size: 1.3rem; cursor: pointer; }
.del:hover { color: var(--red); border-color: var(--red); }
@media (max-width: 860px) {
  .row.stage { grid-template-columns: 1fr 1fr; }
  .row.stage .del { justify-self: end; }
}
@media (max-width: 520px) {
  .row.comp, .row.leg { grid-template-columns: 1fr 1fr; }
  .row.comp label:first-child, .row.leg label:first-child { grid-column: 1 / -1; }
  .row .epd { grid-template-columns: 1fr; }
}
.add { background: none; border: 1px dashed var(--moss); color: var(--moss); border-radius: 10px; min-height: 40px; padding: 0 14px; font: 500 .9rem var(--sans); cursor: pointer; }
.add:hover { background: var(--moss-soft); }
.pill { font: 600 .78rem var(--sans); padding: 2px 10px; border-radius: 999px; background: var(--ochre-soft); color: var(--ochre); }
.pill.ok { background: var(--moss-soft); color: var(--moss); }

.actions { display: flex; flex-wrap: wrap; gap: 10px; padding-top: 22px; }
.errors { margin-top: 16px; padding: 12px 16px; border-radius: 10px; background: var(--red-soft); color: var(--red); }
.errors ul { margin: 0; padding-left: 18px; }

/* Result */
.result { margin-top: 28px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 20px; }
@media (min-width: 720px) { .result { padding: 32px; } }
.total { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 16px; margin-bottom: 8px; }
.total .num { font-family: var(--serif); font-size: clamp(2.6rem, 7vw, 4rem); font-weight: 600; line-height: 1; color: var(--moss); }
.total .unit { font-size: 1.1rem; color: var(--ink-2); }
.meta { color: var(--muted); font-size: .88rem; }
.bars { display: grid; gap: 12px; margin: 24px 0; }
.bar-row { display: grid; grid-template-columns: 120px 1fr 90px; gap: 12px; align-items: center; font-size: .92rem; }
.bar { height: 12px; border-radius: 999px; background: var(--paper); overflow: hidden; }
.bar span { display: block; height: 100%; background: var(--moss); border-radius: 999px; }
.bar-row .v { text-align: right; font-variant-numeric: tabular-nums; }
@media (max-width: 520px) { .bar-row { grid-template-columns: 90px 1fr 70px; } }
.primary { display: inline-flex; gap: 8px; align-items: center; padding: 6px 12px; border-radius: 999px; background: var(--moss-soft); color: var(--moss); font-weight: 600; font-size: .88rem; }

.notes { display: grid; gap: 10px; margin: 20px 0; }
.note { padding: 12px 16px; border-radius: 10px; font-size: .92rem; }
.note.miss { background: var(--ochre-soft); }
.note.warn { background: var(--paper); border: 1px solid var(--line); }
.note h4 { margin: 0 0 6px; font-size: .9rem; }
.note ul { margin: 0; padding-left: 18px; }

.tbl-wrap { overflow-x: auto; margin: 16px 0; border: 1px solid var(--line); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; color: var(--ink-2); background: var(--paper); white-space: nowrap; }
td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
.q { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: .75rem; font-weight: 600; }
.q.HIGH { background: var(--moss-soft); color: var(--moss); }
.q.MEDIUM { background: var(--ochre-soft); color: var(--ochre); }
.q.LOW { background: var(--red-soft); color: var(--red); }
.src { margin: 0; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.src caption { text-align: left; font-family: var(--serif); font-weight: 600; font-size: 1.1rem; padding-bottom: 10px; }
.disclaimer { font-size: .85rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: 14px; margin-top: 20px; }
.result-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }

/* API */
.api { padding: 72px 0; }
.code { margin: 0; background: #0f1a14; color: #d6e6dc; border-radius: var(--radius); padding: 20px; overflow-x: auto; font: 13px/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

/* FAQ */
.faq details { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 1.05rem; list-style-position: outside; }
.faq details p { margin: 10px 0 0; color: var(--ink-2); max-width: 75ch; }

/* Footer */
.foot { padding: 40px 0; color: var(--muted); font-size: .92rem; }
.foot .small { font-size: .82rem; margin: 4px 0; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .btn { transition: none; } }

/* Completezza del risultato */
.report-head { display: none; }
.badge { display: inline-block; margin: 0 0 12px; padding: 4px 12px; border-radius: 999px; font-weight: 600; font-size: .88rem; }
.badge.ok { background: var(--moss-soft); color: var(--moss); }
.badge.part { background: var(--ochre-soft); color: var(--ochre); }
.scope { color: var(--muted); font-size: .9rem; margin: 8px 0; }
.partial-note { padding: 10px 14px; border-left: 3px solid var(--ochre); background: var(--ochre-soft); border-radius: 0 8px 8px 0; font-size: .92rem; }
.steps-cov { list-style: none; padding: 0; margin: 12px 0 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.steps-cov li { padding: 4px 10px; border-radius: 8px; font-size: .85rem; border: 1px solid var(--line); }
.steps-cov li.on { background: var(--moss-soft); color: var(--moss); border-color: transparent; }
.steps-cov li.off { color: var(--muted); border-style: dashed; }
small.bnd { color: var(--muted); }
.inputs { margin-top: 20px; }
.inputs dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; font-size: .9rem; margin: 0; }
.inputs dt { font-weight: 600; color: var(--ink-2); }
.inputs dd { margin: 0; }
@media (max-width: 520px) { .inputs dl { grid-template-columns: 1fr; } .inputs dd { margin-bottom: 8px; } }

/* Offerta */
.offer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin: 8px 0 28px; }
.offer-grid ul { padding-left: 18px; margin: 0; color: var(--ink-2); }
.offer-grid li { margin-bottom: 6px; }
@media (max-width: 760px) { .offer-grid { grid-template-columns: 1fr; gap: 16px; } }

/* Report PDF: si stampa solo il risultato */
@media print {
  @page { margin: 16mm; }
  :root { --paper: #fff; --card: #fff; --ink: #000; --ink-2: #222; --muted: #555; --line: #ccc; }
  body { background: #fff; font-size: 11pt; }
  .skip, .top, .hero, .band, .api, .foot, #cw-form, .calc-section h2, .calc-section .sub, .result-actions { display: none !important; }
  .calc-section { padding: 0; }
  .calc-section .wrap { max-width: none; padding: 0; }
  #cw-result { margin: 0; border: 0; padding: 0; }
  .report-head { display: flex; justify-content: space-between; border-bottom: 2px solid #000; padding-bottom: 6px; margin-bottom: 14px; font-size: 13pt; }
  .tbl-wrap { overflow: visible; }
  table { font-size: 9pt; }
  tr { break-inside: avoid; }
  a { color: #000; text-decoration: none; }
  .bar span { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .badge, .steps-cov li.on, .partial-note, .q { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}

/* Fase: non applicabile e nota */
.stage-extra { grid-column: 1 / -1; display: flex; gap: 14px; align-items: end; flex-wrap: wrap; }
.stage-extra .grow { flex: 1 1 260px; }
label.check { flex-direction: row; align-items: center; gap: 8px; min-height: 44px; cursor: pointer; }
label.check input { width: 18px; height: 18px; min-height: 0; accent-color: var(--moss); }
.row.is-na { opacity: .85; }
.row.is-na input:disabled, .row.is-na select:disabled { opacity: .45; }
.steps-cov li.na { color: var(--muted); background: var(--paper); }
.steps-cov small { opacity: .85; }

/* Report dimostrativo */
.example-banner { background: var(--ochre-soft); color: var(--ink); border: 1px solid var(--ochre); border-radius: 12px; padding: 14px 18px; margin: 0 0 24px; font-weight: 500; }
.example-banner strong { color: var(--ochre); text-transform: uppercase; letter-spacing: .06em; font-size: .85rem; display: block; margin-bottom: 4px; }
.example-page #cw-form { display: none; }
.example-page .result-actions .link { display: none; }
.howto { counter-reset: h; list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 14px; }
.howto li { position: relative; padding: 14px 16px 14px 56px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.howto li::before { counter-increment: h; content: counter(h); position: absolute; left: 16px; top: 14px; width: 28px; height: 28px; border-radius: 50%; background: var(--moss-soft); color: var(--moss); display: grid; place-items: center; font-weight: 600; }
@media print { .example-banner { -webkit-print-color-adjust: exact; print-color-adjust: exact; } .example-page .howto-section { display: block !important; } }