/* ============================================================
   SCTS — Studio di Consulenza Tributaria e Societaria
   Foglio di stile in CSS puro (nessuna dipendenza da framework)
   ============================================================ */

/* ---------- Reset essenziale ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Montserrat', ui-sans-serif, system-ui, -apple-system, sans-serif;
  color: #3d3d3f;
  background: #fff;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button {
  font: inherit; color: inherit; background: none;
  border: none; cursor: pointer;
}
ul { list-style: none; }
a:focus-visible, button:focus-visible { outline: 2px solid #3d3d3f; outline-offset: 3px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- Variabili ---------- */
:root {
  --ink: #3d3d3f;
  --slate: #77787b;
  --mist: #9b9c9e;
  --line: #4a4a4c;
  --track-logo: 0.45em;
  --track-nav: 0.14em;
}

/* ---------- Splash ---------- */
.splash {
  position: fixed; inset: 0; z-index: 50;
  height: 100vh; height: 100dvh; /* dvh gestisce correttamente le barre dinamiche di Safari iOS/iPadOS */
  background: #fff;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 0 1.5rem;
}
.splash.fade-out {
  opacity: 0; visibility: hidden;
  transition: opacity .8s ease, visibility .8s ease;
}
.splash-box {
  border: 1px solid var(--slate); /* stesso grigio delle lettere, come in SCTS */
  width: 16rem; height: 16rem; /* stessa dimensione del quadrato SCTS */
  display: flex; align-items: center; justify-content: center;
}
.splash-logo {
  font-size: 4.25rem; font-weight: 400;
  line-height: 1;
  letter-spacing: .2em;
  color: var(--slate); /* stesso grigio del quadrato, come in SCTS */
  padding-left: .1em; /* compensa il tracking dell'ultima lettera: centratura orizzontale */
  transform: translateY(.05em); /* centratura ottica verticale delle maiuscole */
  user-select: none;
}
.splash-tagline {
  color: #8a8b8d; /* grigio medio, un passo piu' chiaro del nome */
  font-size: 1.0625rem; text-align: center;
  font-variant-caps: small-caps; /* maiuscoletto vero */
  font-weight: 300;
  letter-spacing: .07em;
  margin-top: 1.5rem; /* piu' aria tra nome e payoff */
}
.splash-enter {
  background: #e5e7eb; color: var(--ink);
  padding: .75rem 2.25rem; font-size: .875rem;
  min-height: 44px; /* area di tocco minima raccomandata su mobile/iPad */
  letter-spacing: .05em;
  margin-top: 2.5rem;
  touch-action: manipulation; /* evita il ritardo del doppio-tap su iOS Safari */
  transition: background-color .2s ease;
}
.splash-enter:hover { background: #d1d5db; }
.splash-alliance {
  position: absolute; bottom: 1.75rem; left: 1.5rem; right: 1.5rem;
  text-align: center;
  color: var(--mist); font-size: .8125rem;
  letter-spacing: .04em; line-height: 1.6;
}

@media (min-width: 640px) {
  .splash-box { width: 20rem; height: 20rem; } /* stessa dimensione del quadrato SCTS */
  .splash-logo { font-size: 5.25rem; }
  .splash-tagline { font-size: 1.125rem; }
  .splash-alliance { font-size: .875rem; }
}

/* ---------- Header / Navbar ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40;
  background: rgba(255, 255, 255, .95);
  backdrop-filter: blur(6px);
}
.nav {
  max-width: 72rem; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.5rem;
}
.nav-logo {
  font-size: 1.5rem; font-weight: 300;
  letter-spacing: var(--track-logo);
  color: var(--ink); padding-left: .25rem;
}
.nav-links {
  display: none;
  align-items: center; gap: 1.75rem;
  font-size: .875rem; letter-spacing: var(--track-nav);
  text-transform: uppercase; color: var(--slate);
}
.nav-links a, .lang-toggle {
  transition: color .2s ease;
  text-transform: uppercase; letter-spacing: var(--track-nav);
  padding: .5rem .25rem;
  touch-action: manipulation;
}
.nav-links a:hover, .lang-toggle:hover { color: var(--ink); }
.menu-btn {
  display: block; color: var(--slate);
  padding: .5rem; margin: -.5rem;  /* allarga l'area di tocco senza spostare l'icona */
  touch-action: manipulation;
}

.mobile-menu {
  display: none;
  flex-direction: column; gap: 1rem;
  padding: 0 1.5rem 1.5rem;
  font-size: .875rem; letter-spacing: var(--track-nav);
  text-transform: uppercase; color: var(--slate);
  background: #fff;
}
.mobile-menu.open { display: flex; }
.mobile-menu a, .mobile-menu button {
  display: block; padding: .75rem 0; text-align: left;
  text-transform: uppercase; letter-spacing: var(--track-nav);
  touch-action: manipulation;
}

@media (min-width: 640px) {
  .nav-links { display: flex; }
  .menu-btn, .mobile-menu { display: none !important; }
}

/* ---------- Sezioni generiche ---------- */
main section { scroll-margin-top: 6rem; }
.section { padding: 6rem 1.5rem; }
@media (min-width: 640px) { .section { padding: 8rem 1.5rem; } }

.container-narrow { max-width: 48rem; margin: 0 auto; }
.container-wide   { max-width: 64rem; margin: 0 auto; }
.container-full   { max-width: 72rem; margin: 0 auto; }

.section-title {
  font-size: 1.875rem; font-weight: 700;
  color: var(--slate);
  letter-spacing: .025em; text-transform: uppercase;
}
@media (min-width: 640px) { .section-title { font-size: 2.25rem; } }

.text-body { color: var(--slate); line-height: 1.7; font-size: 1rem; }
@media (min-width: 640px) { .text-body { font-size: 1.125rem; } }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh; min-height: 100dvh; /* dvh gestisce correttamente le barre dinamiche su mobile */
  display: flex; align-items: center; justify-content: center;
  padding: 0 1.5rem;
}
.hero-quote {
  font-size: 1.5rem; font-weight: 300; font-style: italic;
  color: var(--mist); text-align: center;
  max-width: 64rem; line-height: 1.375;
}
@media (min-width: 640px)  { .hero-quote { font-size: 2.25rem; } }
@media (min-width: 1024px) { .hero-quote { font-size: 3rem; } }

/* ---------- Studio ---------- */
.studio { text-align: center; }
.studio .section-title { margin-bottom: 2.5rem; }

/* ---------- Parole ---------- */
.word-panels { min-height: 320px; display: flex; align-items: center; }
.word-panels > div { width: 100%; }

.word-panel { display: none; text-align: center; }
.word-panel.active { display: block; animation: fadeIn .5s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

.word-title {
  font-size: 2.25rem; font-weight: 700;
  color: var(--slate);
  letter-spacing: .025em; text-transform: uppercase;
  margin-bottom: 3rem;
}
@media (min-width: 640px) { .word-title { font-size: 3.75rem; } }

.word-def {
  font-style: italic; color: var(--slate);
  margin-bottom: 1.5rem; font-size: .875rem;
}
.word-text {
  color: var(--slate); line-height: 1.7;
  max-width: 48rem; margin: 0 auto; font-size: .875rem;
}
@media (min-width: 640px) {
  .word-def, .word-text { font-size: 1rem; }
}

/* Linea con "notch" ---------- */
.notch-wrap { margin-top: 5rem; }
.notch-line { position: relative; height: 1px; background: var(--line); }
.notch {
  position: absolute; top: 0;
  width: 22px; height: 22px;
  transform: translateX(-50%);
  transition: left .4s ease;
}
.notch-cover {
  position: absolute; top: -1px; left: 0; right: 0;
  height: 1px; background: #fff;
}

.word-tabs {
  margin-top: 2rem;
  display: flex; flex-wrap: wrap; justify-content: center;
  column-gap: 2rem; row-gap: .75rem;
  font-size: .75rem; letter-spacing: var(--track-nav);
  text-transform: uppercase;
}
@media (min-width: 640px) { .word-tabs { font-size: .875rem; } }
.word-tab {
  color: var(--mist);
  text-transform: uppercase; letter-spacing: var(--track-nav);
  padding: .5rem .25rem; /* area di tocco piu' ampia su mobile/iPad */
  touch-action: manipulation;
  transition: color .2s ease;
}
.word-tab:hover { color: var(--ink); }
.word-tab.active { color: var(--ink); font-weight: 600; }

/* ---------- Fatti / Servizi ---------- */
.fatti { background: rgba(249, 250, 251, .6); }
.fatti .section-title { text-align: center; margin-bottom: 1.5rem; }
.fatti-intro {
  color: var(--slate); text-align: center;
  max-width: 48rem; margin: 0 auto 4rem;
  font-size: .875rem;
}
@media (min-width: 640px) { .fatti-intro { font-size: 1rem; } }

.services-grid {
  display: grid; grid-template-columns: 1fr;
  column-gap: 3rem; row-gap: 3rem;
}
@media (min-width: 640px)  { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .services-grid { grid-template-columns: repeat(3, 1fr); } }

.service h3 {
  text-transform: uppercase; letter-spacing: var(--track-nav);
  color: var(--ink); font-size: .875rem; font-weight: 600;
  margin-bottom: .75rem;
}
.service p { color: var(--slate); font-size: .875rem; line-height: 1.7; }

/* ---------- Contatti ---------- */
.contatti .section-title { margin-bottom: 2.5rem; }
.contatti-firm { font-weight: 600; color: var(--slate); margin-bottom: 2rem; }

.contact-list { color: var(--slate); font-size: .875rem; }
@media (min-width: 640px) { .contact-list { font-size: 1rem; } }
.contact-list > div {
  display: flex; gap: .75rem; flex-wrap: wrap;
  margin-bottom: .75rem;
}
.contact-list a { display: inline-block; padding: .15rem 0; touch-action: manipulation; }
.contact-list canvas { vertical-align: -4px; }
.contact-list dt {
  font-weight: 700; text-transform: uppercase;
  letter-spacing: .025em;
}
.contact-list a:hover { color: var(--ink); }
.contact-list a.mail { text-decoration: underline; text-underline-offset: 4px; }

.contatti-sub {
  font-size: 1.25rem; font-weight: 700;
  color: var(--slate);
  letter-spacing: .025em; text-transform: uppercase;
  margin: 4rem 0 1.5rem;
}
@media (min-width: 640px) { .contatti-sub { font-size: 1.5rem; } }
.contatti-text { color: var(--slate); font-size: .875rem; line-height: 1.7; }
@media (min-width: 640px) { .contatti-text { font-size: 1rem; } }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid #e5e7eb;
  padding: 2.5rem 1.5rem;
}
.footer-inner {
  max-width: 72rem; margin: 0 auto;
  display: flex; flex-direction: column;
  align-items: center; justify-content: space-between;
  gap: 1rem;
  font-size: .75rem; letter-spacing: var(--track-nav);
  text-transform: uppercase; color: var(--mist);
  text-align: center;
}
.footer-logo {
  letter-spacing: var(--track-logo);
  color: var(--slate); font-size: .875rem; padding-left: .25rem;
}
@media (min-width: 640px) {
  .footer-inner { flex-direction: row; text-align: left; }
}

/* ---------- Estensioni Studio AZ ---------- */
.splash-name {
  color: var(--ink);
  font-size: 1.625rem;
  font-weight: 500;
  letter-spacing: .04em;
  text-align: center;
  margin-top: 1.1rem; /* meno distanza dal quadrato */
}
@media (min-width: 640px) { .splash-name { font-size: 2rem; } }

.collab a { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
.collab a:hover { color: var(--slate); }

.nav-logo-wrap { display: flex; flex-direction: column; line-height: 1.2; }
.nav-logo-sub {
  font-size: .625rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--mist);
  padding-left: .25rem;
}

.studio-cols {
  display: grid; grid-template-columns: 1fr;
  gap: 2.5rem; text-align: left; margin-top: 2.5rem;
}
@media (min-width: 768px) { .studio-cols { grid-template-columns: 1fr 1fr; gap: 4rem; } }
.studio-cols h3 {
  text-transform: uppercase; letter-spacing: var(--track-nav);
  color: var(--ink); font-size: .875rem; font-weight: 600;
  margin-bottom: .75rem;
}
.studio-cols p { color: var(--slate); font-size: .9375rem; line-height: 1.75; }
.studio-cols p + p { margin-top: 1rem; }

.collab {
  margin-top: 3.5rem;
  padding: 1.75rem 2rem;
  border: 1px solid rgba(119, 120, 123, .35);
  color: var(--slate);
  font-size: .9375rem; line-height: 1.75;
  text-align: center;
}
.collab strong { color: var(--ink); font-weight: 600; letter-spacing: .05em; }

.finance-block { margin-top: 5rem; }
.finance-block h3 {
  text-transform: uppercase; letter-spacing: var(--track-nav);
  color: var(--ink); font-size: 1rem; font-weight: 700;
  text-align: center; margin-bottom: 1rem;
}
.finance-intro {
  color: var(--slate); text-align: center;
  max-width: 44rem; margin: 0 auto 2.5rem; font-size: .9375rem; line-height: 1.7;
}
.finance-grid {
  display: grid; grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 768px) { .finance-grid { grid-template-columns: repeat(3, 1fr); gap: 3rem; } }
.finance-grid h4 {
  text-transform: uppercase; letter-spacing: var(--track-nav);
  color: var(--slate); font-size: .75rem; font-weight: 700;
  margin-bottom: .75rem;
}
.finance-grid ul { color: var(--slate); font-size: .875rem; line-height: 1.9; }
.finance-grid li { padding-left: 1rem; position: relative; }
.finance-grid li::before {
  content: '—'; position: absolute; left: 0; color: var(--mist);
}

.profile-note {
  margin-top: 2.5rem;
  color: var(--slate); font-size: .9375rem; line-height: 1.75;
}