/* ==========================================================================
   Componenti condivisi: bottoni, link, header, navigazione, footer
   ========================================================================== */

/* --- Bottoni ------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  min-height: 3rem;
  padding: 0.8125rem 1.375rem;
  border: var(--rule) solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-text);
  font-size: 1rem;
  font-weight: var(--fw-medium);
  line-height: 1.2;
  letter-spacing: -0.005em;
  white-space: nowrap;
  text-align: center;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition:
    background-color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    transform 120ms var(--ease-out);
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: var(--c-accent);
  color: var(--c-paper);
}

.btn--primary:focus-visible {
  outline-color: var(--c-ink);
}

.btn--secondary {
  border-color: var(--c-ink);
  color: var(--c-ink);
}

@media (hover: hover) and (pointer: fine) {
  .btn--primary:hover { background: var(--c-accent-press); }
  .btn--secondary:hover { background: var(--c-ink); color: var(--c-paper); }
}

.btn--sm {
  min-height: 2.75rem;
  padding: 0.625rem 1.125rem;
  font-size: 0.9375rem;
}

.btn--lg {
  min-height: 3.5rem;
  padding: 1rem 1.75rem;
  font-size: 1.0625rem;
}

/* --- Link con freccia ----------------------------------------------------
   In linea: se il testo va a capo, filetto e freccia seguono l'ultima parola. */

.link-arrow {
  display: inline;
  padding-block: 0.75rem;
  font-weight: var(--fw-medium);
  line-height: 1.5;
  color: var(--c-ink);
}

.link-arrow__text {
  background-image: linear-gradient(currentColor, currentColor);
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 100% 1px;
  padding-bottom: 3px;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.link-arrow__icon {
  display: inline-block;
  margin-left: 0.75rem;
  vertical-align: -0.05em;
  color: var(--c-accent);
  transition: transform var(--dur-base) var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .link-arrow:hover .link-arrow__icon { transform: translateX(4px); }
}

.section--dark .link-arrow,
.site-footer .link-arrow { color: var(--c-on-dark); }

/* --- Header -------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--c-paper);
  border-bottom: var(--rule) solid transparent;
  transition: border-color var(--dur-base) var(--ease-out);
}

.site-header.is-scrolled,
.site-header.is-open {
  border-bottom-color: var(--c-rule);
}

.site-header__bar {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  height: var(--header-h);
}

/* Lockup temporaneo: simbolo originale + testo HTML */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-right: auto;
  min-height: 2.75rem;
}

.brand__symbol {
  width: auto;
  height: 2.125rem;
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 0.1875rem;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: var(--fw-semibold);
  line-height: 1;
  letter-spacing: -0.01em;
}

.brand__role {
  font-size: 0.75rem;
  font-weight: var(--fw-medium);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--c-ink-muted);
}

@media (min-width: 64em) {
  .brand__symbol { height: 2.5rem; }
  .brand__name { font-size: 1.125rem; }
  .brand__role { font-size: 0.8125rem; }
}

/* CTA nell'header: nascosta sui telefoni, dove vive nel pannello menu */
.site-header__cta {
  display: none;
}

@media (min-width: 40em) {
  .site-header__cta { display: inline-flex; }
}

/* Pulsante menu */
.menu-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  min-height: 2.75rem;
  margin-right: -0.5rem;
  padding-inline: 0.5rem;
  font-size: 0.9375rem;
  font-weight: var(--fw-medium);
  border-radius: var(--radius);
  -webkit-tap-highlight-color: transparent;
}

.menu-toggle__icon {
  position: relative;
  width: 1.125rem;
  height: 0.5rem;
}

.menu-toggle__icon span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur-base) var(--ease-out), top var(--dur-base) var(--ease-out);
}

.menu-toggle__icon span:first-child { top: 0; }
.menu-toggle__icon span:last-child { top: calc(100% - 2px); }

.menu-toggle[aria-expanded="true"] .menu-toggle__icon span:first-child {
  top: calc(50% - 1px);
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon span:last-child {
  top: calc(50% - 1px);
  transform: rotate(-45deg);
}

/* --- Navigazione: pannello sotto 64em, in linea sopra (4 voci + CTA) --- */

.site-nav__list {
  display: flex;
  flex-direction: column;
}

.site-nav__link {
  position: relative;
  display: flex;
  align-items: center;
}

@media (max-width: 63.9375em) {
  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 0 0;
    z-index: 40;
    display: flex;
    flex-direction: column;
    gap: var(--space-7);
    padding: var(--space-5) var(--gutter) var(--space-7);
    background: var(--c-paper);
    overflow-y: auto;
    overscroll-behavior: contain;
    opacity: 0;
    visibility: hidden;
    transform: translate3d(0, -8px, 0);
    transition:
      opacity var(--dur-base) var(--ease-out),
      transform var(--dur-base) var(--ease-out),
      visibility 0s linear var(--dur-base);
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
    transition:
      opacity var(--dur-base) var(--ease-out),
      transform var(--dur-base) var(--ease-out),
      visibility 0s;
  }

  .site-nav__list > li {
    border-bottom: var(--rule) solid var(--c-rule);
  }

  .site-nav__link {
    min-height: 3.75rem;
    font-family: var(--font-display);
    font-size: clamp(1.375rem, 1.1rem + 1.2vw, 1.75rem);
    font-weight: var(--fw-medium);
    letter-spacing: -0.015em;
  }

  .site-nav__link[aria-current="page"]::after {
    content: "";
    width: 6px;
    height: 6px;
    margin-left: 0.75rem;
    border-radius: 50%;
    background: var(--c-accent);
  }

  .site-nav__cta .btn {
    width: 100%;
  }

  /* Senza JS il menu resta visibile come semplice elenco */
  html:not(.js) .site-nav {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  html:not(.js) .menu-toggle {
    display: none;
  }
}

@media (min-width: 40em) and (max-width: 63.9375em) {
  .site-nav__cta { display: none; }
}

@media (min-width: 64em) {
  .site-nav__list {
    flex-direction: row;
    gap: clamp(1rem, 0.2rem + 1vw, 1.75rem);
  }

  .site-nav__link {
    min-height: 2.75rem;
    font-size: 0.9375rem;
    font-weight: var(--fw-medium);
    white-space: nowrap;
  }

  .site-nav__link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0.5rem;
    height: 1px;
    background: currentColor;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--dur-base) var(--ease-out);
  }

  .site-nav__link[aria-current="page"]::after {
    height: 2px;
    background: var(--c-accent);
    transform: scaleX(1);
  }

  .site-nav__cta,
  .menu-toggle {
    display: none;
  }

  .site-header__cta {
    margin-left: var(--space-3);
  }
}

@media (min-width: 64em) and (hover: hover) and (pointer: fine) {
  .site-nav__link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
  }
}

/* --- Footer -------------------------------------------------------------- */

.site-footer {
  background: var(--c-dark);
  color: var(--c-on-dark);
  padding-block: var(--space-9) var(--space-6);
  font-size: var(--fs-small);
}

.site-footer__top {
  display: grid;
  gap: var(--space-7);
  padding-bottom: var(--space-8);
}

.site-footer__name {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: var(--fw-semibold);
  line-height: 1.1;
  letter-spacing: -0.015em;
}

.site-footer__role {
  margin-top: var(--space-2);
  color: var(--c-on-dark-muted);
}

.site-footer__text {
  max-width: 26rem;
  margin-top: var(--space-5);
  color: var(--c-on-dark-muted);
  line-height: 1.6;
}

.site-footer__label {
  margin-bottom: var(--space-4);
  color: var(--c-on-dark-muted);
}

.site-footer__label--group {
  margin-top: var(--space-6);
}

.site-footer__list a,
.site-footer__policies a {
  overflow-wrap: anywhere;
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  background-image: linear-gradient(currentColor, currentColor);
  background-repeat: no-repeat;
  background-position: 0 calc(100% - 0.6rem);
  background-size: 0 1px;
  transition: background-size var(--dur-base) var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .site-footer__list a:hover,
  .site-footer__policies a:hover { background-size: 100% 1px; }
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3) var(--space-6);
  padding-top: var(--space-5);
  border-top: var(--rule) solid var(--c-rule-on-dark);
  color: var(--c-on-dark-muted);
  font-size: 0.8125rem;
}

.site-footer__policies {
  display: flex;
  gap: var(--space-5);
}

@media (min-width: 48em) {
  .site-footer__top {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--col-gap);
  }

  .site-footer__brand { grid-column: 1 / -1; }
  .site-footer__col--nav { grid-column: 1 / span 6; }
  .site-footer__col--contact { grid-column: 7 / span 6; }
}

@media (min-width: 64em) {
  .site-footer__brand { grid-column: 1 / span 5; }
  .site-footer__col--nav { grid-column: 7 / span 3; }
  .site-footer__col--contact { grid-column: 10 / span 3; }
}

/* --- Form ------------------------------------------------------------------ */

.form {
  display: grid;
  gap: var(--space-7);
}

.form__group {
  display: grid;
  gap: var(--space-5);
  padding-top: var(--space-6);
  border-top: var(--rule) solid var(--c-rule-strong);
}

.form__group + .form__group {
  border-top-color: var(--c-rule);
}

.form__row {
  display: grid;
  gap: var(--space-5);
}

@media (min-width: 48em) {
  .form__row--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--col-gap);
  }
}

.field {
  display: grid;
  gap: var(--space-2);
  align-content: start;
}

.field__label {
  font-weight: var(--fw-medium);
  line-height: 1.4;
}

.field__optional {
  margin-left: 0.4em;
  font-size: var(--fs-small);
  font-weight: var(--fw-regular);
  color: var(--c-ink-muted);
}

/* Bordo a 3.3:1 sul bianco (WCAG 1.4.11) */
.field__control {
  width: 100%;
  min-height: 3rem;
  padding: 0.75rem 0.875rem;
  font: inherit;
  line-height: 1.4;
  color: var(--c-ink);
  background: var(--c-paper);
  border: var(--rule) solid rgb(45 49 52 / 0.55);
  border-radius: var(--radius);
  transition: border-color var(--dur-fast) var(--ease-out);
}

textarea.field__control {
  min-height: 8.5rem;
  line-height: 1.55;
  resize: vertical;
}

@media (hover: hover) and (pointer: fine) {
  .field__control:hover { border-color: var(--c-ink); }
}

.field__control:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 1px;
  border-color: var(--c-ink);
}

.field__error {
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  color: var(--c-accent);
}

.field__control[aria-invalid="true"] {
  border-color: var(--c-accent);
}

.form__footer {
  display: grid;
  gap: var(--space-4);
  justify-items: start;
}

.form__micro {
  max-width: 32rem;
  font-size: var(--fs-small);
  color: var(--c-ink-muted);
}

.form__micro a {
  color: var(--c-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form__status {
  max-width: 36rem;
  padding: var(--space-4) var(--space-5);
  border-left: 2px solid var(--c-ink);
  background: var(--c-paper-alt);
}

.form__status[data-state="error"] {
  border-left-color: var(--c-accent);
}

/* Campo trappola per lo spam: invisibile a persone e tecnologie assistive */
.form__hp {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

@media (max-width: 29.9375em) {
  .form__footer .btn { width: 100%; }
}