@font-face {
  font-family: "Martian Mono";
  src: url("/fonts/martian-mono-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 800;
  font-display: swap;
}

@font-face {
  font-family: "Instrument Sans";
  src: url("/fonts/instrument-sans-latin-wght-normal.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --fondo: #0f100d;
  --superficie: #181914;
  --testo: #ecebe2;
  --tenue: #a5a498;
  --riga: #2f3029;
  --segnale: #c8f04b;
  --su-segnale: #14170a;
  --allarme: #ff8a66;
  --mono: "Martian Mono", ui-monospace, Consolas, monospace;
  --sans: "Instrument Sans", system-ui, sans-serif;
}

:root[data-theme="light"] {
  color-scheme: light;
  --fondo: #f4f2e9;
  --superficie: #fcfbf5;
  --testo: #1a1b15;
  --tenue: #5c5c50;
  --riga: #d7d4c6;
  --segnale: #4a6500;
  --su-segnale: #fcfbf5;
  --allarme: #b23a14;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    color-scheme: light;
    --fondo: #f4f2e9;
    --superficie: #fcfbf5;
    --testo: #1a1b15;
    --tenue: #5c5c50;
    --riga: #d7d4c6;
    --segnale: #4a6500;
    --su-segnale: #fcfbf5;
    --allarme: #b23a14;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--fondo);
  color: var(--testo);
  font: 400 1.0625rem/1.6 var(--sans);
}

h1, h2, h3, p, ul, dl, dd, figure, fieldset { margin: 0; padding: 0; }
ul { list-style: none; }
fieldset { border: 0; min-width: 0; }
img, svg, canvas { display: block; max-width: 100%; }
img { height: auto; }

a { color: inherit; text-decoration-color: var(--segnale); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--segnale); }
:focus-visible { outline: 2px solid var(--segnale); outline-offset: 2px; }

.contenuto { width: min(1120px, 100% - 32px); margin-inline: auto; }

.salta {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 20;
  padding: 8px 12px;
  background: var(--segnale);
  color: var(--su-segnale);
}
.salta:focus { top: 8px; }

/* Testata */

.testata {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--fondo);
  border-bottom: 1px solid var(--riga);
}

.barra { display: flex; align-items: center; gap: 24px; min-height: 56px; }

.marchio { font: 700 1rem var(--mono); text-decoration: none; margin-right: auto; }

.menu { display: flex; gap: 20px; font: 400 .72rem var(--mono); }
.menu a { text-decoration: none; color: var(--tenue); padding-block: 8px; }
.menu a:hover { color: var(--segnale); }

.tema {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--riga);
  border-radius: 4px;
  background: none;
  color: var(--testo);
  cursor: pointer;
}
.tema:hover { color: var(--segnale); border-color: currentColor; }

/* Apertura */

.cascata { position: relative; background: #0a0b09; }

.cascata canvas {
  width: 100%;
  height: clamp(260px, 52vh, 520px);
  image-rendering: pixelated;
}

.cascata figcaption {
  position: absolute;
  right: 16px;
  bottom: 10px;
  padding: 3px 6px;
  background: #0a0b09;
  color: #b9b8ab;
  font: 400 .62rem var(--mono);
}

.presentazione {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 48px;
  align-items: end;
  padding-block: 56px 16px;
}

h1 {
  font: 700 clamp(2rem, 5.2vw, 3.6rem)/1.08 var(--mono);
  letter-spacing: -.045em;
  text-wrap: balance;
}

.presentazione p + p { margin-top: 12px; }
.tenue { color: var(--tenue); }

/* Sezioni */

.sezione { padding-block: 72px; }

.fascia {
  background: var(--superficie);
  border-block: 1px solid var(--riga);
}

h2 {
  font: 700 clamp(1.35rem, 3vw, 1.9rem)/1.2 var(--mono);
  letter-spacing: -.035em;
  margin-bottom: 32px;
}

h3 { font: 600 1.35rem/1.25 var(--sans); }

.introduzione { max-width: 62ch; margin: -16px 0 36px; color: var(--tenue); }

/* Progetti */

.progetto {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 48px;
  align-items: start;
  padding-block: 32px;
  border-top: 1px solid var(--riga);
}
.progetto + .progetto { margin-top: 32px; }

.progetto > div > p + p { margin-top: 12px; }

.stato { margin-block: 6px 16px; color: var(--tenue); font: 400 .7rem/1.6 var(--mono); }
.progetto .stato + p { margin-top: 0; }

.scarica { display: flex; flex-wrap: wrap; gap: 8px; margin-block: 20px 16px; }

.scarica a {
  display: block;
  padding: 8px 10px;
  border: 1px solid var(--riga);
  border-radius: 4px;
  font: 400 .68rem var(--mono);
  text-decoration: none;
}
.scarica a:hover { border-color: currentColor; }

.schermata img { border: 1px solid var(--riga); border-radius: 6px; }

.telefoni { display: flex; justify-content: center; gap: 24px; }
.telefoni img { width: min(220px, 45%); }

/* Calcolo della tratta */

.calcolo { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr); gap: 48px; }

.comandi { display: grid; gap: 24px; align-content: start; }

.comando > label, .comando > legend {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 0;
  margin-bottom: 8px;
  font-size: .95rem;
}

output { font: 500 .78rem/1.9 var(--mono); color: var(--segnale); white-space: nowrap; }

input[type="range"] { width: 100%; margin: 0; accent-color: var(--segnale); }

.frequenze { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.frequenze label { position: relative; cursor: pointer; }
.frequenze input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }

.frequenze span {
  display: block;
  padding-block: 8px;
  border: 1px solid var(--riga);
  border-radius: 4px;
  font: 400 .68rem var(--mono);
  text-align: center;
}
.frequenze label:hover span { border-color: var(--segnale); }
.frequenze input:checked + span { background: var(--segnale); border-color: var(--segnale); color: var(--su-segnale); }
.frequenze input:focus-visible + span { outline: 2px solid var(--segnale); outline-offset: 2px; }

.unita { margin-top: 4px; color: var(--tenue); font: 400 .62rem var(--mono); text-align: right; }

.quadro { min-width: 0; }

.livelli { width: 100%; height: auto; border: 1px solid var(--riga); border-radius: 6px; background: var(--fondo); }

.traccia { fill: none; stroke: var(--segnale); stroke-width: 2.5; stroke-linejoin: round; }
.soglia { stroke: var(--allarme); stroke-width: 1.5; stroke-dasharray: 6 5; }
.nota-soglia { fill: var(--allarme); font: 400 10px var(--mono); }
.valore { fill: var(--testo); font: 500 11px var(--mono); }
.tappa { fill: var(--tenue); font: 400 9px var(--mono); }
.punto { fill: var(--segnale); }

.risultati { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-block: 20px; }
.risultati dt { color: var(--tenue); font-size: .85rem; }
.risultati dd { font: 500 .92rem var(--mono); white-space: nowrap; }

.verdetto { padding-left: 12px; border-left: 3px solid var(--segnale); }
.verdetto.critico { border-color: var(--allarme); }

.avvertenza { margin-top: 12px; color: var(--tenue); font-size: .88rem; }

/* Interessi e collegamenti */

.interessi { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.interessi li { padding-top: 16px; border-top: 1px solid var(--riga); }
.interessi h3 { font-size: 1.1rem; margin-bottom: 6px; }
.interessi p { color: var(--tenue); }

.altrove li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 24px;
  padding-block: 14px;
  border-top: 1px solid var(--riga);
}
.altrove a { font-size: 1.15rem; font-weight: 600; }
.altrove span { color: var(--tenue); font: 400 .72rem var(--mono); overflow-wrap: anywhere; }

.piede { border-top: 1px solid var(--riga); }

.piede .contenuto {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 4px 24px;
  padding-block: 24px;
  color: var(--tenue);
  font-size: .88rem;
}

/* Pagina 404 */

.vuota { min-height: 100vh; display: grid; align-content: center; gap: 16px; }
.etichetta { color: var(--tenue); font: 400 .72rem var(--mono); }

@media (max-width: 860px) {
  .presentazione, .progetto, .calcolo { grid-template-columns: 1fr; gap: 28px; }
  .presentazione { padding-top: 36px; }
  .sezione { padding-block: 52px; }
  .interessi { grid-template-columns: 1fr; gap: 20px; }
  .risultati { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .barra { gap: 12px; }
  .menu { gap: 12px; font-size: .62rem; }
  .cascata figcaption { right: 8px; left: 8px; bottom: 8px; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}