/* ==========================================================================
   SM Studio Tecnico di Architettura — foglio di stile principale
   ========================================================================== */

@font-face {
  font-family: 'Fraunces';
  src: url('../fonts/fraunces-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Fraunces';
  src: url('../fonts/fraunces-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

:root {
  --primary: #344A3B;
  --secondary: #E9EFE8;
  --bg: #F5F2ED;
  --text: #2B2B2B;
  --accent: #708C73;
  --line: #d8d3c8;

  --font-serif: 'Fraunces', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --container: 1120px;
  --gap: clamp(1.5rem, 4vw, 3rem);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--primary);
  color: var(--secondary);
  padding: 12px 20px;
  z-index: 100;
}
.skip-link:focus {
  left: 0;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

/* -------------------------------------------------------------------- */
/* Eyebrow / kicker text                                                 */
/* -------------------------------------------------------------------- */
.eyebrow {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #57755a; /* variante scura dell'accent, calibrata per contrasto WCAG AA */
  margin: 0 0 1rem;
}

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  margin: 0;
  color: var(--text);
}

/* -------------------------------------------------------------------- */
/* Scroll reveal + ruler line-draw animation                            */
/* -------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.ruler svg .draw {
  stroke-dasharray: 300;
  stroke-dashoffset: 300;
  transition: stroke-dashoffset 1.1s ease;
}
.reveal.is-visible .ruler svg .draw {
  stroke-dashoffset: 0;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .ruler svg .draw {
    stroke-dashoffset: 0;
    transition: none;
  }
}

/* -------------------------------------------------------------------- */
/* Header                                                                */
/* -------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 0.5px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand img {
  height: 34px;
  width: auto;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 16px;
  letter-spacing: 0.01em;
  color: var(--text);
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: clamp(1.25rem, 3vw, 2.25rem);
  margin: 0;
  padding: 0;
}

.main-nav a {
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  padding: 4px 2px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

.nav-toggle {
  display: none;
}

/* -------------------------------------------------------------------- */
/* Ruler / blueprint divider — signature element                        */
/* -------------------------------------------------------------------- */
.ruler {
  display: flex;
  align-items: center;
  gap: 2px;
  width: 100%;
  max-width: 260px;
  height: 14px;
  margin: 1.75rem 0;
}
.ruler svg { width: 100%; height: 100%; display: block; }
.ruler.center { margin-left: auto; margin-right: auto; }

/* -------------------------------------------------------------------- */
/* Hero                                                                  */
/* -------------------------------------------------------------------- */
.hero {
  padding: clamp(4rem, 10vw, 7.5rem) 0 clamp(3rem, 8vw, 6rem);
  position: relative;
}

.hero-inner {
  max-width: 700px;
  padding-left: clamp(0px, 4vw, 2.5rem);
  border-left: 1px solid var(--line);
}

.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.6rem);
}

.hero .ruler {
  margin: 1.75rem 0;
}

.hero .lede {
  max-width: 480px;
  margin: 1.75rem 0 0;
  color: #5a5a52;
  font-size: 1.05rem;
}

.hero-marks {
  position: absolute;
  top: 0;
  right: clamp(1rem, 6vw, 4rem);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  opacity: 0.55;
}
.hero-marks span {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--accent);
}

@media (max-width: 700px) {
  .hero-marks { display: none; }
}

/* -------------------------------------------------------------------- */
/* Sections generic                                                     */
/* -------------------------------------------------------------------- */
section {
  padding: clamp(3.5rem, 8vw, 6.5rem) 0;
}

.section-head {
  max-width: 620px;
  margin: 0 0 clamp(2rem, 5vw, 3rem);
}

#chi-siamo {
  background: var(--secondary);
}

.chi-siamo-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--gap);
  align-items: start;
}

.chi-siamo-grid p {
  font-size: 1.02rem;
  color: #35402f;
  max-width: 56ch;
}

.stat {
  border-left: 1px solid var(--primary);
  padding-left: 1.5rem;
}

.stat .number {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 6vw, 3.6rem);
  color: var(--primary);
  line-height: 1;
}

.stat .label {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: #4a5a44;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.values-list {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.values-list li {
  font-size: 0.95rem;
  color: #3d4a37;
  padding-left: 1.4rem;
  position: relative;
}

.values-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 1px;
  background: var(--primary);
}

/* -------------------------------------------------------------------- */
/* Come lavoriamo — passi del metodo                                    */
/* -------------------------------------------------------------------- */
.metodo-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.metodo-step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 1.5rem;
  padding: 1.75rem 0;
  border-top: 0.5px solid var(--line);
}

.metodo-step:last-child {
  border-bottom: 0.5px solid var(--line);
}

.metodo-num {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--accent);
}

.metodo-step h3 {
  font-size: 1.1rem;
  margin-bottom: 0.4rem;
}

.metodo-step p {
  margin: 0;
  font-size: 0.92rem;
  color: #5a5a52;
  max-width: 56ch;
}

.metodo-note {
  margin-top: 2.5rem;
  font-size: 0.92rem;
  color: #5a5a52;
  max-width: 62ch;
}

@media (max-width: 600px) {
  .metodo-step {
    grid-template-columns: 40px 1fr;
    gap: 1rem;
  }
}

/* -------------------------------------------------------------------- */
/* Servizi                                                               */
/* -------------------------------------------------------------------- */
.servizi-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 0.5px solid var(--line);
}

.servizio {
  background: var(--bg);
  padding: clamp(1.75rem, 4vw, 2.5rem);
}

.servizio h3 {
  font-size: 1.15rem;
  margin-bottom: 0.6rem;
}

.servizio p {
  margin: 0;
  font-size: 0.88rem;
  color: #6b6b62;
  letter-spacing: 0.01em;
}

/* -------------------------------------------------------------------- */
/* Contatti                                                              */
/* -------------------------------------------------------------------- */
#contatti {
  background: var(--primary);
  color: var(--secondary);
  text-align: center;
}

#contatti .eyebrow { color: #b9c8b4; }

#contatti h2 {
  color: var(--secondary);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
}

#contatti .logo-mark {
  height: 56px;
  width: auto;
  margin: 0 auto 1.5rem;
}

.contact-details {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 1rem;
}

.contact-details a {
  text-decoration: none;
  border-bottom: 1px solid rgba(233, 239, 232, 0.35);
  transition: border-color 0.2s ease;
}
.contact-details a:hover,
.contact-details a:focus-visible {
  border-color: var(--secondary);
}

.contact-details .address {
  color: #cfdccb;
}

/* -------------------------------------------------------------------- */
/* Footer                                                                */
/* -------------------------------------------------------------------- */
.site-footer {
  background: #2a3a2f;
  color: #a9b9a5;
  font-size: 0.78rem;
  padding: 2rem 0;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

.footer-grid p { margin: 0.2rem 0; }

.footer-legal {
  line-height: 1.9;
}

.footer-credit {
  color: #93a390;
}

/* -------------------------------------------------------------------- */
/* Responsive                                                            */
/* -------------------------------------------------------------------- */
@media (max-width: 760px) {
  .main-nav {
    position: fixed;
    inset: 0;
    top: 68px;
    background: var(--bg);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }
  .main-nav.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .main-nav ul {
    flex-direction: column;
    padding: 2rem clamp(1.25rem, 5vw, 3rem);
    gap: 1.5rem;
  }
  .main-nav a { font-size: 1.1rem; }

  .nav-toggle {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
  }
  .nav-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--text);
    margin: 5px 0;
  }

  .chi-siamo-grid {
    grid-template-columns: 1fr;
  }

  .servizi-grid {
    grid-template-columns: 1fr;
  }
}