:root {
  --paper: #E9EEE8; --sheet: #F6F8F4; --ink: #1B2723; --muted: #5E6E68;
  --rule: #C9D3CB; --ledger: #13624F; --under: #2E7D4A; --over: #9B3A2E;
  --band: rgba(19, 98, 79, .16);
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #121B18; --sheet: #1A2522; --ink: #E3EAE5; --muted: #93A39C;
    --rule: #2F3D39; --ledger: #5FC1A4; --under: #6CC48C; --over: #E08A7C;
    --band: rgba(95, 193, 164, .18);
  }
}
:root[data-theme="dark"] {
  --paper: #121B18; --sheet: #1A2522; --ink: #E3EAE5; --muted: #93A39C;
  --rule: #2F3D39; --ledger: #5FC1A4; --under: #6CC48C; --over: #E08A7C;
  --band: rgba(95, 193, 164, .18);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 16px/1.5 var(--sans); font-variant-numeric: tabular-nums;
  padding-bottom: env(safe-area-inset-bottom);
}
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
:focus-visible { outline: 2px solid var(--ledger); outline-offset: 2px; }

.top {
  position: sticky; top: 0; z-index: 5; background: var(--paper);
  display: flex; gap: 1rem; align-items: center;
  padding: calc(.75rem + env(safe-area-inset-top)) 1rem .75rem;
  border-bottom: 1px solid var(--rule);
}
.brand { font: 600 1.25rem/1 var(--serif); color: var(--ink); text-decoration: none; white-space: nowrap; }
.search { position: relative; flex: 1; max-width: 32rem; }
.search input {
  width: 100%; font: inherit; color: var(--ink); background: var(--sheet);
  border: 1px solid var(--rule); border-radius: 6px; padding: .55rem .75rem;
}
.suggest {
  position: absolute; left: 0; right: 0; top: calc(100% + 4px); margin: 0; padding: 0;
  list-style: none; background: var(--sheet); border: 1px solid var(--rule); border-radius: 6px;
  max-height: 60vh; overflow: auto;
}
.suggest button {
  all: unset; box-sizing: border-box; display: block; width: 100%; padding: .55rem .75rem; cursor: pointer;
}
.suggest button:hover, .suggest button:focus-visible { background: var(--band); }
.suggest small { color: var(--muted); display: block; }

main { max-width: 46rem; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
h1 { font: 400 clamp(1.9rem, 6vw, 2.6rem)/1.1 var(--serif); margin: 0 0 .4rem; letter-spacing: -.01em; }
.empty p { max-width: 36rem; color: var(--muted); }
.empty .hint { font-size: .9rem; }
.meta { color: var(--muted); margin: 0; font-size: .95rem; }

.verdict { margin: 2rem 0 1.5rem; }
.verdict-line { font: 400 1.35rem/1.35 var(--serif); margin: 0 0 1.25rem; max-width: 34rem; }
.verdict-line strong { font-weight: 600; }
.under { color: var(--under); } .over { color: var(--over); }

/* Il righello: l'elemento su cui si concentra il design */
.ruler { position: relative; height: 118px; margin: 0 .25rem; }
.ruler .axis { position: absolute; left: 0; right: 0; top: 60px; height: 1px; background: var(--rule); }
.ruler .band { position: absolute; top: 48px; height: 25px; background: var(--band); border-radius: 2px; }
.ruler .tick { position: absolute; top: 50px; width: 1px; height: 21px; background: var(--ledger); }
.ruler .tick span {
  position: absolute; top: 26px; transform: translateX(-50%); font-size: .72rem; color: var(--muted); white-space: nowrap;
}
.ruler .tick.row1 span { top: -20px; }
.ruler .tick.row2 span { top: 42px; }
.ruler .tick span.start { transform: none; }
.ruler .tick span.end { transform: translateX(-100%); }
.ruler .price { position: absolute; top: 6px; bottom: 8px; width: 2px; background: var(--ink); }
.ruler .price span {
  position: absolute; top: -4px; left: 6px; font-size: .78rem; font-weight: 600; white-space: nowrap;
}
.ruler .price.flip span { left: auto; right: 6px; }
.range-line { color: var(--muted); font-size: .9rem; margin: .5rem 0 0; }

.warnings { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.warnings li {
  border-left: 3px solid var(--over); padding: .35rem .75rem; margin-bottom: .5rem;
  background: var(--sheet); font-size: .92rem;
}

.block { border-top: 1px solid var(--rule); padding: .9rem 0; }
.block summary { font: 600 1.15rem/1.3 var(--serif); cursor: pointer; }
.block[open] summary { margin-bottom: .9rem; }

.assumptions { display: grid; gap: .9rem 1.5rem; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); }
.field label { display: flex; justify-content: space-between; font-size: .9rem; }
.field output { font-weight: 600; }
.field input[type=range] { width: 100%; accent-color: var(--ledger); }
.field small { color: var(--muted); font-size: .78rem; }

table.num { width: 100%; border-collapse: collapse; font-size: .92rem; }
table.num th, table.num td { padding: .4rem .5rem; border-bottom: 1px solid var(--rule); text-align: right; }
table.num th:first-child, table.num td:first-child { text-align: left; }
table.num th { font-weight: 500; color: var(--muted); }
table.grid td.center { font-weight: 600; background: var(--band); }
.scroll { overflow-x: auto; }
.note { color: var(--muted); font-size: .85rem; }
.link { all: unset; cursor: pointer; color: var(--ledger); font-size: .9rem; margin-top: 1rem; display: inline-block; }
.status { color: var(--muted); }
.foot { max-width: 46rem; margin: 0 auto; padding: 0 1rem 2rem; color: var(--muted); font-size: .8rem; }
@media (prefers-reduced-motion: no-preference) {
  .ruler .tick, .ruler .price, .ruler .band { transition: left .25s ease, width .25s ease; }
}