/* Assistenza PC Roma Nord — foglio di stile unico
   Tema chiaro di default, scuro via prefers-color-scheme.
   Font: IBM Plex Sans (lettura) + IBM Plex Mono (solo accenti). */

:root {
  --bg: #f4f5f3;
  --surface: #ffffff;
  --surface-2: #eceeeb;
  --ink: #1b2530;
  --ink-2: #4a5563;
  --line: #d3d8dd;
  --line-strong: #1b2530;
  --primary: #124e78;
  --primary-deep: #0d3a5a;
  --primary-soft: #e3eef6;
  --on-primary: #ffffff;
  --wa: #25d366;
  --wa-deep: #1ebe5b;
  --on-wa: #062d14;
  --focus: #124e78;
  --shadow-float: 0 6px 18px rgba(6, 45, 20, 0.28);

  --font-sans: "IBM Plex Sans", system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, "Courier New", monospace;

  --max: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 6px;
  --header-h: 64px;
  --header-offset: 110px;

  color-scheme: light;
}

@media (min-width: 900px) {
  :root {
    --header-offset: 64px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1720;
    --surface: #17212b;
    --surface-2: #1f2a36;
    --ink: #e6eaee;
    --ink-2: #a9b3bd;
    --line: #2c3a48;
    --line-strong: #e6eaee;
    --primary: #3e8fc7;
    --primary-deep: #6fb1e0;
    --primary-soft: #16304a;
    --on-primary: #0f1720;
    --wa: #25d366;
    --wa-deep: #35e077;
    --on-wa: #062d14;
    --focus: #f2c766;
    --shadow-float: 0 6px 18px rgba(0, 0, 0, 0.55);
    color-scheme: dark;
  }
}

/* ---------- base ---------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-offset) + 16px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

@media (max-width: 599px) {
  body {
    font-size: 1rem;
  }
}

h1,
h2,
h3,
h4 {
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2rem, 5.2vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h3 {
  font-size: 1.125rem;
  letter-spacing: 0;
}

p {
  margin: 0 0 1em;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--primary);
  text-underline-offset: 0.15em;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--primary-deep);
}

ul,
ol {
  padding-left: 1.25em;
  margin: 0 0 1em;
}

li {
  margin-bottom: 0.35em;
}

strong {
  font-weight: 600;
}

svg {
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 8px;
  top: -100px;
  z-index: 100;
  padding: 12px 16px;
  background: var(--ink);
  color: var(--bg);
  font-weight: 600;
  border-radius: var(--radius);
}

.skip-link:focus {
  top: 8px;
}

.wrap {
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- pulsanti ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 10px 20px;
  border: 2px solid transparent;
  border-radius: var(--radius);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  line-height: 1.2;
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease;
}

.btn svg {
  width: 22px;
  height: 22px;
}

.btn-wa {
  background: var(--wa);
  border-color: var(--wa);
  color: var(--on-wa);
}

.btn-wa:hover {
  background: var(--wa-deep);
  border-color: var(--wa-deep);
  color: var(--on-wa);
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--on-primary);
}

.btn-primary:hover {
  background: var(--primary-deep);
  border-color: var(--primary-deep);
  color: var(--on-primary);
}

.btn-outline {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink);
}

.btn-outline:hover {
  background: var(--surface-2);
  color: var(--ink);
}

.btn-lg {
  min-height: 60px;
  padding: 14px 24px;
  font-size: 1.125rem;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "brand cta"
    "nav nav";
  align-items: center;
  column-gap: 12px;
}

.brand {
  grid-area: brand;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: var(--header-h);
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.brand:hover {
  color: var(--primary);
}

.brand svg {
  width: 30px;
  height: 30px;
}

.site-nav {
  grid-area: nav;
  margin-inline: calc(var(--gutter) * -1);
  padding-inline: var(--gutter);
  overflow-x: auto;
  scrollbar-width: none;
  border-top: 1px solid var(--line);
}

.site-nav::-webkit-scrollbar {
  display: none;
}

.site-nav ul {
  display: flex;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav li {
  margin: 0;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 10px;
  color: var(--ink-2);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  margin-bottom: -1px;
}

.site-nav a:hover {
  color: var(--ink);
}

.site-nav a[aria-current="page"],
.site-nav a.is-active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.header-cta {
  grid-area: cta;
  min-height: 44px;
  padding: 8px 14px;
}

.header-cta .label {
  display: none;
}

@media (min-width: 900px) {
  .site-header .wrap {
    grid-template-columns: auto 1fr auto;
    grid-template-areas: "brand nav cta";
    column-gap: 24px;
  }

  .site-nav {
    margin-inline: 0;
    padding-inline: 0;
    border-top: 0;
    justify-self: end;
  }

  .site-nav ul {
    gap: 4px;
  }

  .site-nav a {
    min-height: var(--header-h);
    margin-bottom: 0;
    padding: 0 12px;
    font-size: 1rem;
  }

  .header-cta .label {
    display: inline;
  }
}

/* etichette di menu: corte fino a 1100px, estese oltre (una sola visibile) */
.nav-full {
  display: none;
}

@media (min-width: 1100px) {
  .nav-short {
    display: none;
  }

  .nav-full {
    display: inline;
  }
}

/* ---------- hero ---------- */

.hero {
  padding-block: clamp(40px, 7vw, 88px) clamp(40px, 6vw, 72px);
}

.hero .wrap {
  display: grid;
  gap: 40px;
  align-items: center;
}

@media (min-width: 900px) {
  .hero .wrap {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
  }
}

.badge {
  display: inline-block;
  margin: 0 0 20px;
  padding: 6px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--ink);
  background: var(--surface);
}

.hero h1 {
  max-width: 16ch;
  margin-bottom: 0.45em;
}

.hero .lede {
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  color: var(--ink-2);
  max-width: 52ch;
  margin-bottom: 28px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.cta-row .btn {
  flex: 1 1 200px;
}

@media (min-width: 640px) {
  .cta-row .btn {
    flex: 0 0 auto;
  }
}

.phone-clear {
  display: none;
  margin: 20px 0 0;
  color: var(--ink-2);
}

.phone-clear a {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1.125rem;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.phone-clear a:hover {
  color: var(--primary);
  border-color: var(--primary);
}

@media (min-width: 900px) {
  .phone-clear {
    display: block;
  }
}

/* scheda intervento */

.sheet {
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  overflow: hidden;
}

.sheet-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line-strong);
  background: var(--ink);
  color: var(--bg);
}

.sheet-head .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--wa);
}

.sheet dl {
  margin: 0;
  padding: 8px 0;
}

.sheet .row {
  display: grid;
  grid-template-columns: 13ch 1fr;
  gap: 12px;
  padding: 9px 16px;
}

.sheet .row + .row {
  border-top: 1px dashed var(--line);
}

.sheet dt {
  color: var(--primary);
  font-weight: 500;
}

.sheet dt::before {
  content: "> ";
}

.sheet dd {
  margin: 0;
  color: var(--ink);
}

.sheet .cursor {
  display: inline-block;
  width: 0.6em;
  height: 1.1em;
  margin-left: 2px;
  vertical-align: text-bottom;
  background: var(--primary);
  animation: blink 1.1s steps(1, end) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* ---------- sezioni a registro ---------- */

.sec {
  border-top: 1px solid var(--line);
  padding-block: clamp(44px, 7vw, 84px);
}

.sec-grid {
  display: grid;
  gap: 28px;
}

.sec-head p {
  color: var(--ink-2);
  max-width: 34ch;
}

@media (min-width: 900px) {
  .sec-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 56px;
  }

  .sec-head {
    position: sticky;
    top: calc(var(--header-offset) + 24px);
    align-self: start;
  }
}

/* griglia a celle (servizi, passi, punti di forza) */

.cells {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  list-style: none;
  margin: 0;
  padding: 0;
}

.cells > li,
.cells > div {
  background: var(--surface);
  padding: 20px;
  margin: 0;
}

.cells h3 {
  margin: 12px 0 6px;
}

.cells p {
  color: var(--ink-2);
  font-size: 0.9375rem;
}

.cells .icon {
  width: 28px;
  height: 28px;
  color: var(--primary);
}

@media (min-width: 640px) {
  .cells-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cells-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.cell-cta {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  background: var(--primary-soft) !important;
}

.cell-cta h3 {
  margin-top: 0;
}

.step-n {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 500;
  color: var(--primary);
  line-height: 1;
}

/* pulsante sotto una griglia di celle */

.sec-cta {
  margin-top: 20px;
}

/* portfolio: progetti realizzati */

.tag {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.3;
  color: var(--ink);
  background: var(--bg);
}

.cells .tag + h3 {
  margin-top: 10px;
}

.ext {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 2px;
  font-weight: 500;
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.ext:hover {
  border-bottom-color: currentColor;
}

.ext svg {
  width: 16px;
  height: 16px;
}

.cells p + .ext {
  margin-top: 4px;
}

/* elenco puntato con segno di spunta */

.checks {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25em;
}

.checks li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 0.6em;
}

.checks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.45em;
  width: 14px;
  height: 8px;
  border-left: 2.5px solid var(--primary);
  border-bottom: 2.5px solid var(--primary);
  transform: rotate(-45deg);
}

/* zone servite */

.zones {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
}

.zones li {
  margin: 0;
  padding: 8px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: var(--surface);
  font-size: 0.9375rem;
  line-height: 1.2;
}

.zones li.main {
  background: var(--ink);
  color: var(--bg);
}

.note {
  color: var(--ink-2);
  font-size: 0.9375rem;
}

/* FAQ */

.faq {
  border-top: 1px solid var(--line);
}

.faq:last-of-type {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 56px;
  padding: 14px 4px;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "";
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  margin-right: 6px;
  border-right: 2px solid var(--primary);
  border-bottom: 2px solid var(--primary);
  transform: rotate(45deg);
  transition: transform 160ms ease;
}

.faq[open] summary::after {
  transform: rotate(-135deg);
}

.faq summary:hover {
  color: var(--primary);
}

.faq .answer {
  padding: 0 4px 18px;
  color: var(--ink-2);
  max-width: 68ch;
}

/* contatti */

.contact-grid {
  display: grid;
  gap: 12px;
  margin-bottom: 24px;
}

@media (min-width: 640px) {
  .contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.contact-grid .btn {
  width: 100%;
}

.contact-meta {
  display: grid;
  gap: 6px;
  padding: 20px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.contact-meta p {
  margin: 0;
}

.contact-meta .mono {
  color: var(--ink-2);
}

/* ---------- pagine interne ---------- */

.breadcrumb {
  padding-top: 20px;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.9375rem;
  color: var(--ink-2);
}

.breadcrumb li {
  margin: 0;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--line-strong);
  opacity: 0.5;
}

.breadcrumb a {
  display: inline-block;
  padding: 6px 0;
}

.page-head {
  padding-block: 24px clamp(32px, 5vw, 56px);
}

.page-head h1 {
  max-width: 20ch;
}

.page-head .lede {
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  color: var(--ink-2);
  max-width: 56ch;
}

.prose {
  max-width: 68ch;
}

.prose h2 {
  margin-top: 1.6em;
  font-size: clamp(1.375rem, 2.4vw, 1.75rem);
}

.prose h2:first-child {
  margin-top: 0;
}

.prose h3 {
  margin-top: 1.4em;
}

.prose ul,
.prose ol {
  margin-bottom: 1.25em;
}

.prose .checks {
  max-width: 60ch;
}

.callout {
  margin: 1.5em 0;
  padding: 18px 20px;
  border-left: 4px solid var(--primary);
  background: var(--surface);
}

.callout p:last-child {
  margin-bottom: 0;
}

.struct {
  margin: 1.25em 0 1.5em;
  padding: 18px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.struct ol {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: sez;
}

.struct li {
  counter-increment: sez;
  margin: 0;
  padding: 4px 0;
}

.struct li::before {
  content: counter(sez, decimal-leading-zero);
  margin-right: 12px;
  color: var(--primary);
}

.struct li span {
  color: var(--ink-2);
}

.cta-box {
  margin-top: clamp(36px, 6vw, 64px);
  padding: 28px clamp(20px, 4vw, 36px);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
}

.cta-box h2 {
  margin-top: 0;
  font-size: 1.5rem;
}

.cta-box .cta-row {
  margin-top: 20px;
}

.related {
  margin-top: clamp(32px, 5vw, 48px);
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.related h2 {
  font-size: 1.125rem;
  margin-bottom: 12px;
}

.related ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.related li {
  margin-bottom: 8px;
}

.page-main {
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* 404 */

.notfound {
  padding-block: clamp(48px, 10vw, 120px);
}

.notfound .code {
  font-family: var(--font-mono);
  font-size: clamp(3rem, 12vw, 6rem);
  font-weight: 500;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 16px;
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--line-strong);
  background: var(--surface);
  padding-block: 40px 100px;
  font-size: 0.9375rem;
  color: var(--ink-2);
}

.footer-grid {
  display: grid;
  gap: 28px;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

.site-footer h2 {
  font-size: 1rem;
  margin-bottom: 10px;
  color: var(--ink);
}

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer li {
  margin-bottom: 8px;
}

.site-footer a {
  display: inline-block;
  padding: 10px 0;
  min-height: 44px;
  line-height: 24px;
  color: var(--ink-2);
}

.site-footer a:hover {
  color: var(--primary);
}

.footer-bottom {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
}

/* ---------- WhatsApp flottante ---------- */

.wa-float {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 56px;
  min-height: 56px;
  padding: 14px;
  border-radius: 999px;
  background: var(--wa);
  color: var(--on-wa);
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow-float);
}

.wa-float:hover {
  background: var(--wa-deep);
  color: var(--on-wa);
}

.wa-float svg {
  width: 28px;
  height: 28px;
}

.wa-float .label {
  display: none;
}

@media (min-width: 640px) {
  .wa-float {
    right: 24px;
    bottom: 24px;
    padding: 14px 22px 14px 16px;
  }

  .wa-float .label {
    display: inline;
  }
}

/* ---------- accessibilità e motion ---------- */

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

  .sheet .cursor {
    animation: none;
  }

  .faq summary::after,
  .btn {
    transition: none;
  }
}

@media print {
  .site-header,
  .wa-float,
  .skip-link {
    display: none;
  }
}

/* Link di contatto inline (telefono, email): area di tocco minima 44px */
.phone-clear a,
.mono a[href^="tel:"],
.mono a[href^="mailto:"] {
  display: inline-block;
  padding: 10px 0;
  min-height: 44px;
  line-height: 24px;
}