/* ═══════════════════════════════════════════════════════════════════════
   Diottra — agenzia digitale, Vicolo della Stadia 3, Parma (fittizia)
   Sito dimostrativo di Francesco Tannoia.

   Lingua visiva: strumento ottico. Carta da rilievo, inchiostro, una sola
   marca acida (la mira) come il filo del collimatore. Niente colonna di
   quote, niente fascia oraria, niente hamburger a tutto schermo.
   ═══════════════════════════════════════════════════════════════════════ */

:root {
  --carta: #f3efe4;
  --inchiostro: #15130f;
  --tenue: #5c574c;
  --mira: #c6ef2a;
  --mira-inchiostro: #141210;
  --linea: rgba(21, 19, 15, 0.14);
  --linea-forte: rgba(21, 19, 15, 0.28);
  --notte: #12110e;
  --notte-carta: #1b1914;
  --notte-inchiostro: #f3efe4;
  --notte-tenue: #b7b09e;
  --sans: "Syne", system-ui, sans-serif;
  --serif: "Source Serif 4", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --mira-h: 3.25rem;
  --nastro-h: 2.1rem;
  --dock-h: 4.25rem;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; }
html {
  background: var(--carta);
  color: var(--inchiostro);
  font-family: var(--serif);
  font-size: 112.5%;
  line-height: 1.5;
  scroll-behavior: smooth;
}
html.js { scroll-behavior: auto; }
body {
  min-height: 100dvh;
  background:
    linear-gradient(90deg, var(--linea) 1px, transparent 1px) 0 0 / 48px 48px,
    var(--carta);
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button, input, textarea, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--inchiostro); outline-offset: 3px; }

.salta {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  z-index: 80;
  padding: 0.55rem 0.9rem;
  background: var(--mira);
  color: var(--mira-inchiostro);
  text-decoration: none;
  font-family: var(--sans);
  font-weight: 700;
}
.salta:focus { top: 0.75rem; }

.nastro {
  position: relative;
  z-index: 40;
  margin: 0;
  min-height: var(--nastro-h);
  background: var(--notte);
  color: var(--notte-inchiostro);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
}
.nastro a {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  min-height: var(--nastro-h);
  padding: 0.35rem 1rem;
  text-decoration: none;
}
.nastro__eti {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 3.2rem;
  min-height: 1.5rem;
  padding: 0 0.4rem;
  background: var(--mira);
  color: var(--mira-inchiostro);
  font-weight: 600;
}

/* ── mira: navigazione a nonio / scala graduata ─────────────────────── */
.mira {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 0.8rem;
  min-height: var(--mira-h);
  padding: 0 1rem 0 1.1rem;
  background: color-mix(in srgb, var(--carta) 88%, transparent);
  border-bottom: 1px solid var(--linea-forte);
  backdrop-filter: blur(10px);
}
.mira__marchio {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  text-decoration: none;
  font-family: var(--sans);
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 1.05rem;
}
.mira__marchio em {
  font-style: normal;
  color: var(--tenue);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.08em;
}
.mira__scala {
  position: relative;
  overflow: hidden;
  height: 2.2rem;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.mira__nastro {
  display: flex;
  gap: 0;
  height: 100%;
  will-change: transform;
}
.mira__tick {
  flex: 0 0 4.6rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.58rem;
  color: var(--tenue);
  min-height: 24px;
  min-width: 24px;
}
.mira__tick i {
  display: block;
  width: 1px;
  height: 0.7rem;
  background: currentColor;
  margin-bottom: 0.2rem;
}
.mira__tick[aria-current="true"] { color: var(--inchiostro); font-weight: 600; }
.mira__tick[aria-current="true"] i { background: var(--mira); width: 2px; height: 1.1rem; }
.mira__finestra {
  pointer-events: none;
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 4.6rem;
  transform: translateX(-50%);
  border-left: 2px solid var(--inchiostro);
  border-right: 2px solid var(--inchiostro);
  background: color-mix(in srgb, var(--mira) 35%, transparent);
}
.mira__grado {
  font-family: var(--mono);
  font-size: 0.78rem;
  min-width: 4.2rem;
  text-align: right;
}
.mira__grado b { font-weight: 600; }
.mira__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.4rem;
  padding: 0 0.85rem;
  background: var(--inchiostro);
  color: var(--carta);
  text-decoration: none;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.82rem;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.dock {
  display: none;
}

/* ── shared ─────────────────────────────────────────────────────────── */
.sezione { padding: 5.5rem 1.2rem 4.5rem; }
.sezione--notte {
  background: var(--notte);
  color: var(--notte-inchiostro);
}
.kicker {
  margin: 0 0 0.7rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tenue);
}
.sezione--notte .kicker { color: var(--notte-tenue); }
.titolo {
  container-type: inline-size;
  margin: 0 0 1.1rem;
  font-family: var(--sans);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.92;
  max-width: 14ch;
}
.titolo .riga {
  display: block;
  overflow: hidden;
}
.titolo .riga > span {
  display: block;
  font-size: clamp(1.45rem, 6cqi, 4.2rem);
  white-space: nowrap;
}
html.js .titolo .riga > span { transform: translateY(102%); }
html.calma .titolo .riga > span,
html:not(.js) .titolo .riga > span { transform: none; }

.prosa {
  max-width: 38rem;
  font-size: 1.05rem;
  color: var(--tenue);
}
.sezione--notte .prosa { color: var(--notte-tenue); }
.prosa strong { color: var(--inchiostro); font-weight: 600; }
.sezione--notte .prosa strong { color: var(--notte-inchiostro); }

.azioni { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.4rem; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0 1.05rem;
  text-decoration: none;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.92rem;
  border: 0;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 11px) 0, 100% 11px, 100% 100%, 11px 100%, 0 calc(100% - 11px));
}
.btn--mira { background: var(--mira); color: var(--mira-inchiostro); }
.btn--inchiostro { background: var(--inchiostro); color: var(--carta); }
.btn--linea {
  background: transparent;
  color: inherit;
  box-shadow: inset 0 0 0 1.5px currentColor;
}
.sezione--notte .btn--inchiostro { background: var(--notte-inchiostro); color: var(--notte); }

/* ── hero ───────────────────────────────────────────────────────────── */
.apertura {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2rem;
  align-items: end;
  min-height: calc(100dvh - var(--mira-h) - var(--nastro-h));
  padding: 2.5rem 1.3rem 2.2rem;
}
.apertura__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.4rem;
  margin: 0 0 1.2rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.apertura__cifre {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 2rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--linea-forte);
  font-family: var(--mono);
  font-size: 0.72rem;
}
.apertura__cifre strong {
  display: block;
  font-family: var(--sans);
  font-size: 1.35rem;
  letter-spacing: -0.04em;
  margin-bottom: 0.15rem;
}
.apertura__ottica {
  transform-origin: 70% 50%;
  will-change: transform;
}
.mira-svg { width: 100%; height: auto; overflow: visible; }
[data-fuoco-anello] {
  transform-box: fill-box;
  transform-origin: center;
}
.mira-svg .asse { fill: none; stroke: var(--inchiostro); stroke-width: 1.2; }
.mira-svg .laser { fill: none; stroke: var(--mira); stroke-width: 2.2; stroke-linecap: square; }

/* ── studio / servizi ───────────────────────────────────────────────── */
.griglia-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 3rem;
  max-width: 72rem;
  margin: 0 auto;
}
.elenco-asse {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
}
.elenco-asse li {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: 0.8rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--linea);
  font-size: 0.98rem;
}
.elenco-asse b {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.72rem;
  color: var(--tenue);
}
.carte {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}
.carta {
  padding: 1.2rem 1.15rem 1.3rem;
  background: color-mix(in srgb, var(--carta) 70%, #fff);
  border: 1px solid var(--linea-forte);
}
.carta h3 {
  margin: 0 0 0.5rem;
  font-family: var(--sans);
  font-size: 1.15rem;
  letter-spacing: -0.03em;
}
.carta p { margin: 0; color: var(--tenue); font-size: 0.95rem; }
.carta svg { margin-bottom: 0.9rem; }

/* ── metodo: asse ottico ────────────────────────────────────────────── */
.metodo__binario {
  position: relative;
  margin-top: 2rem;
  min-height: 22rem;
}
.metodo__asse {
  position: absolute;
  left: 8%;
  right: 8%;
  top: 50%;
  height: 2px;
  background: var(--notte-tenue);
  transform: translateY(-50%);
}
.metodo__bead {
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 14px;
  margin: -7px 0 0 -7px;
  background: var(--mira);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  will-change: transform;
}
.metodo__passi {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  position: relative;
  z-index: 1;
}
.passo {
  padding: 1.1rem 1rem 1.2rem;
  background: var(--notte-carta);
}
.passo h3 {
  margin: 0.35rem 0 0.45rem;
  font-family: var(--sans);
  font-size: 1.2rem;
}
.passo p { margin: 0; color: var(--notte-tenue); font-size: 0.92rem; }
.passo em {
  font-family: var(--mono);
  font-style: normal;
  font-size: 0.7rem;
  color: var(--mira);
}

/* ── lavori ─────────────────────────────────────────────────────────── */
.filtri {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1.2rem 0 1.5rem;
}
.filtro {
  min-height: 2.4rem;
  padding: 0 0.85rem;
  border: 1px solid var(--linea-forte);
  background: transparent;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.82rem;
  cursor: pointer;
}
.filtro[aria-pressed="true"] {
  background: var(--inchiostro);
  color: var(--carta);
  border-color: var(--inchiostro);
}
.lavori__griglia {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.lavoro {
  display: flex;
  flex-direction: column;
  min-height: 22rem;
  padding: 1.15rem;
  background: #fffdf8;
  border: 1px solid var(--linea-forte);
}
.lavoro[hidden] { display: none !important; }
.lavoro svg { margin: 0 0 1rem; }
.lavoro h3 {
  margin: 0 0 0.4rem;
  font-family: var(--sans);
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}
.lavoro p { margin: 0; color: var(--tenue); flex: 1; }
.lavoro .tag {
  margin-top: 1rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ── fuoco ──────────────────────────────────────────────────────────── */
.fuoco__banco {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
  margin-top: 1.5rem;
}
.fuoco__tela {
  position: relative;
  min-height: 18rem;
  background: var(--notte-carta);
  overflow: hidden;
}
.fuoco__tela svg { width: 100%; height: 18rem; }
.fuoco__hint {
  margin: 0.7rem 0 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--notte-tenue);
}

/* ── incarico / fasce ───────────────────────────────────────────────── */
.tappe {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.6rem;
}
.tappa {
  padding: 1.15rem;
  border-top: 3px solid var(--mira);
  background: color-mix(in srgb, var(--carta) 65%, #fff);
}
.tappa h3 {
  margin: 0 0 0.45rem;
  font-family: var(--sans);
}
.tappa p { margin: 0; color: var(--tenue); }
.fasce__tabella {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.4rem;
  font-size: 0.95rem;
}
.fasce__tabella th,
.fasce__tabella td {
  text-align: left;
  padding: 0.85rem 0.6rem;
  border-bottom: 1px solid var(--linea);
  vertical-align: top;
}
.fasce__tabella th {
  font-family: var(--sans);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--tenue);
  font-weight: 700;
}

/* ── faq / contatti ─────────────────────────────────────────────────── */
.faq {
  display: grid;
  gap: 0.55rem;
  margin-top: 1.4rem;
  max-width: 46rem;
}
.faq details {
  border: 1px solid var(--linea-forte);
  background: color-mix(in srgb, var(--carta) 70%, #fff);
  padding: 0.2rem 0.9rem;
}
.faq summary {
  cursor: pointer;
  min-height: 2.8rem;
  display: flex;
  align-items: center;
  font-family: var(--sans);
  font-weight: 700;
}
.faq details p { margin: 0 0 0.9rem; color: var(--tenue); }

.contatti__griglia {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1.5rem;
}
.orari { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.orari th, .orari td {
  text-align: left;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--linea);
}
.campo { display: flex; flex-direction: column; gap: 0.3rem; margin-bottom: 0.8rem; }
.campo label { font-family: var(--sans); font-weight: 700; font-size: 0.82rem; }
.campo input,
.campo textarea,
.campo select {
  min-height: 2.6rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--linea-forte);
  background: #fffdf8;
}
.campo textarea { min-height: 6.5rem; resize: vertical; }
.mappa {
  min-height: 18rem;
  height: 22rem;
  border: 1px solid var(--linea-forte);
  background: #ddd8cc;
}
.nota {
  margin-top: 1rem;
  font-size: 0.88rem;
  color: var(--tenue);
}

.piede {
  padding: 2rem 1.2rem 6rem;
  background: var(--notte);
  color: var(--notte-inchiostro);
  font-family: var(--mono);
  font-size: 0.78rem;
}
.piede a {
  color: var(--mira);
  display: inline-flex;
  align-items: center;
  min-height: 2.4rem;
}
.piede__griglia {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 1.4rem;
  max-width: 72rem;
  margin: 0 auto;
}
.piede nav { display: flex; flex-direction: column; gap: 0.15rem; }
.piede nav a { text-decoration: none; }

/* ── velo di messa a fuoco ──────────────────────────────────────────── */
.velo {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 0.8rem;
  background: var(--carta);
  color: var(--inchiostro);
  pointer-events: none;
}
.velo.is-via {
  pointer-events: none;
}
.velo__mira { color: var(--inchiostro); overflow: visible; }
.velo__marca {
  margin: 0;
  font-family: var(--sans);
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 1.4rem;
}
.velo__n {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.9rem;
  letter-spacing: 0.12em;
}
html.calma .velo,
html:not(.js) .velo { display: none; }

/* ── cursore a reticolo (solo mouse) ─────────────────────────────────── */
.reticolo {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 70;
  width: 28px;
  height: 28px;
  margin: -14px 0 0 -14px;
  pointer-events: none;
  mix-blend-mode: multiply;
}
.reticolo__anello {
  position: absolute;
  inset: 0;
  border: 1.5px solid var(--inchiostro);
  border-radius: 50%;
}
.reticolo__croce {
  position: absolute;
  inset: 50%;
  width: 12px;
  height: 12px;
  margin: -6px 0 0 -6px;
  background:
    linear-gradient(var(--mira), var(--mira)) center / 12px 1.5px no-repeat,
    linear-gradient(var(--mira), var(--mira)) center / 1.5px 12px no-repeat;
}
html.js.mira-cursor { cursor: none; }
html.js.mira-cursor a,
html.js.mira-cursor button,
html.js.mira-cursor input,
html.js.mira-cursor textarea,
html.js.mira-cursor summary { cursor: none; }
@media (hover: hover) and (pointer: fine) {
  .reticolo { display: block; }
}

/* ── nastro marquee ─────────────────────────────────────────────────── */
.nastro-lavoro {
  overflow: hidden;
  border-block: 1px solid var(--linea-forte);
  background: color-mix(in srgb, var(--mira) 18%, var(--carta));
  padding: 0.7rem 0;
}
.nastro-lavoro__pista {
  display: flex;
  gap: 2.4rem;
  width: max-content;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  will-change: transform;
}
.nastro-lavoro__pista span { white-space: nowrap; }

/* ── sala ───────────────────────────────────────────────────────────── */
.sala {
  margin: 2.6rem auto 0;
  max-width: 72rem;
  padding: 1rem;
  background: color-mix(in srgb, var(--carta) 70%, #fff);
  border: 1px solid var(--linea-forte);
  overflow-x: auto;
}
.sala svg { width: 100%; min-width: 40rem; height: auto; }
.sala__zona text {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  fill: var(--inchiostro);
}
.sala__piccolo { fill: var(--tenue); font-size: 10px; }
.sala__zona rect { fill: none; stroke: var(--linea-forte); }
.sala figcaption {
  margin: 0.7rem 0 0;
  font-size: 0.86rem;
  color: var(--tenue);
}

/* ── squadra ────────────────────────────────────────────────────────── */
.squadra__griglia {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.8rem;
}
.persona {
  padding: 1.1rem 1rem 1.2rem;
  background: color-mix(in srgb, var(--carta) 65%, #fff);
  border: 1px solid var(--linea-forte);
}
.persona svg { width: 4.2rem; height: 4.2rem; margin-bottom: 0.8rem; }
.persona h3 {
  margin: 0 0 0.15rem;
  font-family: var(--sans);
  font-size: 1.12rem;
  letter-spacing: -0.03em;
}
.persona__ruolo {
  margin: 0 0 0.55rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tenue);
}
.persona p { margin: 0; font-size: 0.92rem; color: var(--tenue); }

.lavori__aiuto {
  margin: 0 0 0.8rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tenue);
}
.lavori__binario { overflow: hidden; }
.lavori__griglia { will-change: transform; }

.fuoco__anello { transform-origin: 200px 140px; }

@media (max-width: 899px) {
  .mira { display: none; }
  .dock {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    min-height: var(--dock-h);
    padding: 0.4rem 0.5rem calc(0.4rem + env(safe-area-inset-bottom));
    background: var(--notte);
    color: var(--notte-inchiostro);
  }
  .dock a, .dock button {
    min-height: 2.8rem;
    border: 0;
    background: transparent;
    color: inherit;
    font-family: var(--sans);
    font-weight: 700;
    text-decoration: none;
  }
  .dock button { background: var(--mira); color: var(--mira-inchiostro); }
  .indice {
    position: fixed;
    inset: 0 0 var(--dock-h) 0;
    z-index: 35;
    background: var(--carta);
    padding: 1.2rem;
    overflow: auto;
  }
  .indice[hidden] { display: none !important; }
  .indice a {
    display: flex;
    align-items: center;
    min-height: 2.8rem;
    text-decoration: none;
    font-family: var(--sans);
    font-weight: 700;
    border-bottom: 1px solid var(--linea);
  }
  .apertura,
  .griglia-2,
  .carte,
  .metodo__passi,
  .lavori__griglia,
  .fuoco__banco,
  .tappe,
  .contatti__griglia,
  .piede__griglia,
  .apertura__cifre,
  .squadra__griglia { grid-template-columns: 1fr; }
  .lavori__binario { overflow: visible; }
  .lavori__griglia { transform: none !important; }
  .lavori__aiuto { display: none; }
  .apertura { min-height: auto; padding-top: 1.4rem; }
  .sezione { padding: 3.6rem 1rem 3.2rem; }
  .piede { padding-bottom: calc(var(--dock-h) + 1.5rem); }
}

@media (max-width: 1100px) and (min-width: 900px) {
  .squadra__griglia { grid-template-columns: repeat(2, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .titolo .riga > span { transform: none !important; }
}