/* ============================================================
   PROJECT51M — style.css
   Palette: antracite #141517 · bianco #f4f3f1 · arancione #ff5c1a
   ============================================================ */

:root {
  --ink: #141517;
  --ink-2: #1d1e21;
  --paper: #f4f3f1;
  --accent: #ff5c1a;
  --accent-dark: #d64a0e;
  --line: rgba(244, 243, 241, 0.14);
  --line-dark: rgba(20, 21, 23, 0.14);
  --font-display: "Anton", "Arial Narrow", sans-serif;
  --font-body: "Space Grotesk", "Segoe UI", sans-serif;
  --maxw: 1100px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, video { max-width: 100%; display: block; }

::selection { background: var(--accent); color: var(--ink); }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  transition: background 0.35s ease, box-shadow 0.35s ease, padding 0.35s ease;
}

.site-header.scrolled {
  background: rgba(20, 21, 23, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--line);
  padding: 0.65rem 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--paper);
}

.brand-mark {
  width: 14px;
  height: 14px;
  border: 3px solid var(--accent);
  display: inline-block;
  transform: rotate(45deg);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.06em;
}

.brand-name em { font-style: normal; color: var(--accent); }

/* Hamburger */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  width: 46px;
  height: 46px;
  padding: 10px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--paper);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4.5px) rotate(-45deg); }

.main-nav {
  position: fixed;
  inset: 0;
  z-index: -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.6rem;
  background: rgba(20, 21, 23, 0.97);
  backdrop-filter: blur(14px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.main-nav.open { opacity: 1; pointer-events: auto; }

.main-nav a {
  color: var(--paper);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 6vw, 2.4rem);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

.main-nav a:hover, .main-nav a:focus-visible { color: var(--accent); }

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .main-nav {
    position: static;
    z-index: auto;
    flex-direction: row;
    gap: 1.8rem;
    background: none;
    backdrop-filter: none;
    opacity: 1;
    pointer-events: auto;
  }
  .main-nav a {
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
  }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-media { position: absolute; inset: -12% 0; z-index: 0; }

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 62%;
  transform: scale(1.08);
  will-change: transform;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(20,21,23,0.62) 0%, rgba(20,21,23,0.30) 45%, rgba(20,21,23,0.88) 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding: 6rem 1.5rem 5rem;
  max-width: 900px;
}

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero-logo {
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 13vw, 9.5rem);
  line-height: 0.95;
  letter-spacing: 0.02em;
  text-shadow: 0 6px 40px rgba(0, 0, 0, 0.55);
}

.hero-logo span { color: var(--accent); }

.hero-title {
  margin-top: 1.4rem;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3.6vw, 2.1rem);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.hero-sub {
  margin: 1rem auto 0;
  max-width: 560px;
  font-size: 1.02rem;
  color: rgba(244, 243, 241, 0.85);
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  justify-content: center;
}

.hero-sign {
  margin-top: 2.4rem;
  font-size: 0.78rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: rgba(244, 243, 241, 0.6);
}

.scroll-cue {
  position: absolute;
  bottom: 1.6rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  color: rgba(244, 243, 241, 0.75);
  text-decoration: none;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.cue-arrow { font-size: 1.1rem; animation: cue-bounce 1.8s ease-in-out infinite; }

@keyframes cue-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(7px); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.95rem 2rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 6px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--paper);
  transform: translateY(-2px);
}

.btn-ghost {
  border-color: rgba(244, 243, 241, 0.55);
  color: var(--paper);
}

.btn-ghost:hover, .btn-ghost:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ---------- Sections ---------- */
.section {
  padding: clamp(4.5rem, 11vw, 8.5rem) 1.5rem;
  text-align: center;
}

.section-dark { background: var(--ink-2); }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.9rem;
  margin-bottom: 1.6rem;
}

.section-index {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.section-index::after { content: " —"; color: rgba(244, 243, 241, 0.35); }

.section-tag {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(244, 243, 241, 0.65);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 7vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: 0.015em;
  text-transform: uppercase;
  margin-bottom: 2.2rem;
}

.accent { color: var(--accent); }

.center-col {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.3rem;
}

.lead { font-size: 1.18rem; font-weight: 500; line-height: 1.6; }

.body-text { color: rgba(244, 243, 241, 0.82); }

.note {
  font-size: 0.85rem;
  color: rgba(244, 243, 241, 0.55);
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  text-align: left;
}

.note a { color: var(--accent); }

/* ---------- Split layouts ---------- */
.split {
  max-width: var(--maxw);
  margin: 2.5rem auto 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  text-align: left;
  align-items: center;
}

@media (min-width: 900px) {
  .split { grid-template-columns: 1fr 1fr; gap: 4rem; }
  .split-reverse figure { order: 2; }
}

.frame { position: relative; }

.frame img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45);
}

.frame figcaption, .video-card figcaption, .video-single figcaption {
  margin-top: 0.7rem;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(244, 243, 241, 0.5);
  text-align: center;
}

.split-text { display: flex; flex-direction: column; gap: 1.2rem; }

.feature-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
  font-size: 0.98rem;
}

@media (min-width: 560px) { .feature-list { grid-template-columns: 1fr 1fr; } }

.feature-list li {
  padding: 0.55rem 0 0.55rem 1.6rem;
  position: relative;
  border-bottom: 1px solid var(--line);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.05rem;
  width: 9px;
  height: 9px;
  background: var(--accent);
  transform: rotate(45deg);
}

/* ---------- Video grids ---------- */
.video-grid {
  max-width: 820px;
  margin: 3.5rem auto 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 760px) { .video-grid { grid-template-columns: 1fr 1fr; } }

.video-card video, .video-single video {
  width: 100%;
  max-height: 78vh;
  margin: 0 auto;
  border-radius: 10px;
  background: #000;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45);
}

.video-single {
  max-width: 460px;
  margin: 3.5rem auto 0;
}

.video-single video { max-height: 80vh; }

/* ---------- Quotes ---------- */
.quotes {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2.4rem;
  text-align: center;
}

.quote p {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4.4vw, 2.2rem);
  line-height: 1.25;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.quote cite {
  display: block;
  margin-top: 0.9rem;
  font-style: normal;
  font-size: 0.8rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ---------- Motto ---------- */
.motto {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.5vw, 2.2rem);
  line-height: 1.2;
  text-transform: uppercase;
  color: var(--accent);
  letter-spacing: 0.02em;
}

/* ---------- Contact form ---------- */
.contact-form {
  width: 100%;
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  text-align: left;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
}

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

.field { display: flex; flex-direction: column; gap: 0.45rem; }

.field span {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(244, 243, 241, 0.7);
}

.field small { font-weight: 400; text-transform: none; letter-spacing: 0.02em; }

.field input, .field select, .field textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--paper);
  background: rgba(244, 243, 241, 0.06);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.85rem 1rem;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.field select { appearance: none; }

.field select:invalid { color: rgba(244, 243, 241, 0.45); }

.field option { color: var(--ink); background: var(--paper); }

.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(244, 243, 241, 0.1);
}

.field input.error, .field select.error, .field textarea.error { border-color: #e23b3b; }

.contact-form .btn { align-self: flex-start; }

.form-status { font-size: 0.95rem; min-height: 1.4em; }
.form-status.ok { color: #58d68d; }
.form-status.warn { color: var(--accent); }

/* ---------- Footer ---------- */
.site-footer {
  padding: 4rem 1.5rem 3rem;
  text-align: center;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.04em;
}

.footer-logo span { color: var(--accent); }

.footer-desc { color: rgba(244, 243, 241, 0.7); font-size: 0.95rem; }

.footer-social { display: flex; gap: 1.6rem; margin-top: 0.4rem; }

.footer-social a {
  color: var(--paper);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.2rem;
  transition: color 0.2s ease;
}

.footer-social a:hover { color: var(--accent); }

.footer-fine { margin-top: 1rem; font-size: 0.75rem; color: rgba(244, 243, 241, 0.4); }

/* ---------- WhatsApp floating ---------- */
.wa-button {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 90;
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: var(--ink);
  border-radius: 50%;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  transition: transform 0.2s ease, background 0.2s ease;
}

.wa-button:hover { transform: translateY(-3px); background: var(--paper); }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .cue-arrow { animation: none; }
  .hero-media img { transform: none; }
  .btn, .wa-button { transition: none; }
}

/* Focus visibile per navigazione da tastiera */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---------- Galleria ---------- */
.gallery-grid {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 760px) { .gallery-grid { grid-template-columns: repeat(3, 1fr); } }

.gallery-item {
  overflow: hidden;
  border-radius: 10px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
  transition: transform 0.5s ease;
}

.gallery-item:hover img { transform: scale(1.05); }

.social-cta {
  margin-top: 2.6rem;
  font-size: 0.95rem;
  color: rgba(244, 243, 241, 0.75);
}

.social-cta a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease;
}

.social-cta a:hover { border-color: var(--accent); }

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(244, 243, 241, 0.04);
  transition: border-color 0.2s ease;
}

.faq-item[open] { border-color: var(--accent); }

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 1.1rem 3.2rem 1.1rem 1.3rem;
  font-weight: 700;
  font-size: 1.02rem;
  position: relative;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-body);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--accent);
  transition: transform 0.25s ease;
}

.faq-item[open] summary::after { transform: translateY(-50%) rotate(45deg); }

.faq-item summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }

.faq-item p {
  padding: 0 1.3rem 1.2rem;
  color: rgba(244, 243, 241, 0.82);
  font-size: 0.97rem;
}

/* ---------- Logo originali (PDF) ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.brand-logo {
  display: block;
  height: 26px;
  width: auto;
  filter: drop-shadow(0 2px 10px rgba(0, 0, 0, 0.4));
}

.hero-logo img {
  width: min(520px, 72vw);
  height: auto;
  margin: 0 auto;
  filter: drop-shadow(0 8px 34px rgba(0, 0, 0, 0.6));
}

.footer-logo img {
  width: 190px;
  height: auto;
  margin: 0 auto;
}

/* ---------- Header centrato + switch lingua ---------- */
.site-header {
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.5rem;
}

.site-header .brand { margin: 0 auto; }

.header-side {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.lang-switch { display: flex; gap: 0.3rem; }

.lang-btn {
  font-size: 1.25rem;
  line-height: 1;
  padding: 0.35rem 0.45rem;
  background: rgba(244, 243, 241, 0.07);
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
  opacity: 0.55;
  filter: grayscale(0.6);
  transition: opacity 0.2s ease, filter 0.2s ease, border-color 0.2s ease;
}

.lang-btn:hover { opacity: 0.85; }

.lang-btn.active {
  opacity: 1;
  filter: none;
  border-color: var(--accent);
}

@media (min-width: 900px) {
  .site-header { padding: 0.9rem 1.5rem; }
  .main-nav { justify-content: center; flex-wrap: wrap; }
}

/* ---------- Telefono footer ---------- */
.footer-phone a {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 3px solid var(--accent);
  padding-bottom: 0.15rem;
  transition: color 0.2s ease;
}

.footer-phone a:hover { color: var(--accent); }

/* ---------- Pulsanti lingua: etichette testuali IT / EN ---------- */
.lang-btn {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  padding: 0.45rem 0.65rem;
}