/* ============================================
   Studio Tecnico Romano — Design tokens
   ============================================ */
:root{
  --bg: #F6F5F1;
  --bg-alt: #EFEEE7;
  --bg-alt-2: #E9E7DE;
  --ink: #1B1E22;
  --ink-soft: #565C63;
  --ink-faint: #9198A0;
  --line: #D9D6CC;
  --accent: #1F5C6B;
  --accent-dim: #3C7683;
  --accent-soft: #DCE8E7;
  --brass: #A9812F;
  --paper: #FFFFFF;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --container: 1240px;
  --gutter: clamp(24px, 5vw, 72px);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body{
  margin:0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body, a, button, input, textarea, select, .light-switch{
  cursor: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20width%3D%2244%22%20height%3D%2244%22%20viewBox%3D%220%200%2044%2044%22%3E%0A%3Cdefs%3E%0A%3CradialGradient%20id%3D%22g%22%20cx%3D%2250%25%22%20cy%3D%2242%25%22%20r%3D%2255%25%22%3E%0A%3Cstop%20offset%3D%220%25%22%20stop-color%3D%22%23ffe9a8%22%20stop-opacity%3D%220.6%22/%3E%0A%3Cstop%20offset%3D%22100%25%22%20stop-color%3D%22%23ffe9a8%22%20stop-opacity%3D%220%22/%3E%0A%3C/radialGradient%3E%0A%3C/defs%3E%0A%3Ccircle%20cx%3D%2222%22%20cy%3D%2217%22%20r%3D%2218%22%20fill%3D%22url%28%23g%29%22/%3E%0A%3Cpath%20d%3D%22M22%206%20a10%2010%200%200%201%206.2%2017.8%20c-1.1%200.9%20-1.7%202.2%20-1.7%203.6%20v0.6%20h-9%20v-0.6%20c0-1.4-0.6-2.7-1.7-3.6%20A10%2010%200%200%201%2022%206%20z%22%20fill%3D%22%23fff3c4%22%20stroke%3D%22%23c9a227%22%20stroke-width%3D%220.6%22/%3E%0A%3Cellipse%20cx%3D%2218.5%22%20cy%3D%2212.5%22%20rx%3D%222.4%22%20ry%3D%223.2%22%20fill%3D%22%23ffffff%22%20opacity%3D%220.55%22/%3E%0A%3Cpath%20d%3D%22M18.5%2015%20l1.7%203.4%20l1.6%20-2%20l1.6%202%20l1.7%20-3.4%22%20stroke%3D%22%23b8860b%22%20stroke-width%3D%220.7%22%20fill%3D%22none%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22/%3E%0A%3Crect%20x%3D%2218.5%22%20y%3D%2228.4%22%20width%3D%227%22%20height%3D%223.4%22%20fill%3D%22%238a8f93%22/%3E%0A%3Crect%20x%3D%2218.5%22%20y%3D%2229.3%22%20width%3D%227%22%20height%3D%220.6%22%20fill%3D%22%235a5e61%22/%3E%0A%3Crect%20x%3D%2218.5%22%20y%3D%2230.6%22%20width%3D%227%22%20height%3D%220.6%22%20fill%3D%22%235a5e61%22/%3E%0A%3Crect%20x%3D%2219%22%20y%3D%2232%22%20width%3D%226%22%20height%3D%222.6%22%20rx%3D%220.8%22%20fill%3D%22%233a3d42%22/%3E%0A%3C/svg%3E") 22 10, pointer;
}

a{ color: inherit; text-decoration: none; }
ul{ list-style: none; margin:0; padding:0; }
img{ max-width: 100%; display:block; }

.mono{ font-family: var(--font-mono); letter-spacing: 0.02em; }

.eyebrow{
  color: var(--accent);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 14px;
}

.section-title{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.8rem, 3.4vw, 3rem);
  line-height: 1.12;
  margin: 0;
  letter-spacing: -0.01em;
}

.section-head{
  max-width: 720px;
  margin: 0 auto 64px;
  padding: 0 var(--gutter);
  text-align: left;
}

section{ position: relative; }

/* ============================================
   Intro interattiva — schermata nera con fascio di luce
   ============================================ */
#introOverlay{
  position: fixed; inset: 0; z-index: 100000;
  display: flex; align-items: center; justify-content: center;
  touch-action: none;
  transition: opacity 1s ease;
  cursor: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20width%3D%2244%22%20height%3D%2244%22%20viewBox%3D%220%200%2044%2044%22%3E%0A%3Cdefs%3E%0A%3CradialGradient%20id%3D%22g%22%20cx%3D%2250%25%22%20cy%3D%2242%25%22%20r%3D%2255%25%22%3E%0A%3Cstop%20offset%3D%220%25%22%20stop-color%3D%22%23ffe9a8%22%20stop-opacity%3D%220.6%22/%3E%0A%3Cstop%20offset%3D%22100%25%22%20stop-color%3D%22%23ffe9a8%22%20stop-opacity%3D%220%22/%3E%0A%3C/radialGradient%3E%0A%3C/defs%3E%0A%3Ccircle%20cx%3D%2222%22%20cy%3D%2217%22%20r%3D%2218%22%20fill%3D%22url%28%23g%29%22/%3E%0A%3Cpath%20d%3D%22M22%206%20a10%2010%200%200%201%206.2%2017.8%20c-1.1%200.9%20-1.7%202.2%20-1.7%203.6%20v0.6%20h-9%20v-0.6%20c0-1.4-0.6-2.7-1.7-3.6%20A10%2010%200%200%201%2022%206%20z%22%20fill%3D%22%23fff3c4%22%20stroke%3D%22%23c9a227%22%20stroke-width%3D%220.6%22/%3E%0A%3Cellipse%20cx%3D%2218.5%22%20cy%3D%2212.5%22%20rx%3D%222.4%22%20ry%3D%223.2%22%20fill%3D%22%23ffffff%22%20opacity%3D%220.55%22/%3E%0A%3Cpath%20d%3D%22M18.5%2015%20l1.7%203.4%20l1.6%20-2%20l1.6%202%20l1.7%20-3.4%22%20stroke%3D%22%23b8860b%22%20stroke-width%3D%220.7%22%20fill%3D%22none%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22/%3E%0A%3Crect%20x%3D%2218.5%22%20y%3D%2228.4%22%20width%3D%227%22%20height%3D%223.4%22%20fill%3D%22%238a8f93%22/%3E%0A%3Crect%20x%3D%2218.5%22%20y%3D%2229.3%22%20width%3D%227%22%20height%3D%220.6%22%20fill%3D%22%235a5e61%22/%3E%0A%3Crect%20x%3D%2218.5%22%20y%3D%2230.6%22%20width%3D%227%22%20height%3D%220.6%22%20fill%3D%22%235a5e61%22/%3E%0A%3Crect%20x%3D%2219%22%20y%3D%2232%22%20width%3D%226%22%20height%3D%222.6%22%20rx%3D%220.8%22%20fill%3D%22%233a3d42%22/%3E%0A%3C/svg%3E") 22 10, pointer;
}
#introOverlay.is-hidden{ opacity: 0; pointer-events: none; }
#introOverlay[hidden]{ display: none; }

.intro-shade{
  position: absolute; inset: 0; z-index: 0;
  background: #05070a;
  --x: 50%; --y: 50%;
  -webkit-mask-image: radial-gradient(circle 90px at var(--x) var(--y), transparent 0%, transparent 25%, black 100%);
          mask-image: radial-gradient(circle 90px at var(--x) var(--y), transparent 0%, transparent 25%, black 100%);
}

.light-switch{
  position: relative; z-index: 1; width: 220px; height: 150px;
  border: none; background: none; padding: 0;
}
.switch-plate{
  display: flex; align-items: center; justify-content: center; gap: 6px;
  width: 100%; height: 100%; border-radius: 6px;
  background: linear-gradient(155deg, #2b2e33, #16181b 70%);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.05) inset, 0 14px 34px rgba(0,0,0,0.6);
  position: relative;
  transition: box-shadow 0.35s ease;
}
.light-switch:hover .switch-plate,
.light-switch:focus-visible .switch-plate{
  box-shadow: 0 0 0 1px rgba(255,255,255,0.1) inset, 0 14px 34px rgba(0,0,0,0.6), 0 0 44px rgba(255, 90, 60, 0.4);
}
.din-rail{
  position: absolute; left: 6%; right: 6%; height: 8px;
  background: linear-gradient(180deg, #cfd3d6, #8f9498);
  box-shadow: 0 1px 2px rgba(0,0,0,0.4);
}
.din-rail--top{ top: 14px; }
.din-rail--bottom{ bottom: 14px; }

.breaker{
  position: relative; z-index: 1;
  width: 54px; height: 108px;
  border-radius: 3px;
  background: linear-gradient(160deg, #e9e9e4, #cfcfc9 55%, #b9b9b3);
  box-shadow: 0 3px 8px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.5);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.breaker--side{ opacity: 0.85; }
.breaker-window{
  width: 20px; height: 68px; border-radius: 3px;
  background: linear-gradient(180deg, #1c1e21, #000);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.8);
  position: relative;
  display: flex; flex-direction: column; align-items: center; justify-content: space-between;
  padding: 6px 0;
}
.breaker-mark{ font-family: var(--font-mono); font-size: 0.6rem; color: #7a7f83; }
.breaker--main .breaker-mark--on{ color: #4a4d50; }
.breaker--main.is-on-state .breaker-mark--on,
.light-switch.is-on .breaker--main .breaker-mark--on{ color: #2ecc71; }
.breaker-lever{
  width: 13px; height: 26px; border-radius: 2px;
  background: linear-gradient(180deg, #3a3d42, #101214);
  box-shadow: 0 2px 3px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.15);
  transform: translateY(20px);
  transition: transform 0.22s cubic-bezier(.4,0,.2,1);
}
.breaker-lever.is-on{ transform: translateY(-20px); background: linear-gradient(180deg, #4a4e53, #1c1e21); }
.light-switch.is-on .breaker--main .breaker-lever{ transform: translateY(-20px); background: linear-gradient(180deg, #4a4e53, #1c1e21); }
.breaker-rating{ margin-top: 6px; font-size: 0.6rem; color: #55585b; }

/* ============================================
   Loader
   ============================================ */
#loader{
  position: fixed; inset:0; z-index: 999;
  background: var(--bg);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap: 18px;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
#loader.hidden{ opacity:0; visibility:hidden; pointer-events:none; }
.loader-mark{
  font-family: var(--font-display);
  font-weight:700; font-size:1.4rem; letter-spacing: 0.1em;
  color: var(--ink);
}
.loader-bar{ width: 160px; height:2px; background: var(--line); overflow:hidden; }
.loader-bar span{ display:block; height:100%; width:0%; background: var(--accent); animation: loaderFill 1.4s ease forwards; }
@keyframes loaderFill{ to{ width:100%; } }

/* ============================================
   Ambient blueprint grid
   ============================================ */
.grid-overlay{
  position: fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(31,92,107,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(31,92,107,0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
}

/* ============================================
   Nav
   ============================================ */
.nav{
  position: fixed; top:0; left:0; right:0; z-index: 100;
  display:flex; align-items:center; justify-content:space-between;
  padding: 22px var(--gutter);
  transition: background 0.4s ease, padding 0.4s ease, border-color 0.4s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled{
  background: rgba(246,245,241,0.85);
  backdrop-filter: blur(10px);
  padding-top: 14px; padding-bottom: 14px;
  border-color: var(--line);
}
.nav-brand{ display:flex; align-items:center; gap:10px; }
.nav-brand-mark{
  font-family: var(--font-display); font-weight:700; font-size:0.95rem;
  color: var(--paper); background: var(--ink);
  padding: 6px 9px; letter-spacing: 0.06em;
}
.nav-brand-text{ font-family: var(--font-display); font-weight:600; font-size: 1rem; letter-spacing: -0.01em; }
.nav-links{ display:flex; align-items:center; gap: 36px; }
.nav-links a{ font-size: 0.92rem; color: var(--ink-soft); transition: color 0.25s ease; position:relative; }
.nav-links a:hover{ color: var(--ink); }
.nav-links a.nav-cta{
  color: var(--paper); background: var(--ink);
  padding: 9px 18px; border-radius: 2px;
}
.nav-links a.nav-cta:hover{ background: var(--accent); color: var(--paper); }
.nav-links a[aria-current="page"]:not(.nav-cta){ color: var(--ink); border-bottom: 1px solid var(--accent); padding-bottom: 3px; }
.nav-toggle{ display:none; }

/* ============================================
   Hero
   ============================================ */
.hero{
  position: relative;
  min-height: 100svh;
  display:flex; flex-direction:column; justify-content:center;
  padding: 0 var(--gutter);
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 50% at 75% 30%, rgba(31,92,107,0.08), transparent 60%),
    repeating-linear-gradient(0deg, rgba(31,92,107,0.04) 0px, rgba(31,92,107,0.04) 1px, transparent 1px, transparent 64px),
    repeating-linear-gradient(90deg, rgba(31,92,107,0.04) 0px, rgba(31,92,107,0.04) 1px, transparent 1px, transparent 64px);
}
#hero-canvas{
  position:absolute; top:-14%; bottom:-14%; right:-10%;
  width: 96%; height:128%;
  z-index:0;
  border: none; background: transparent;
  pointer-events: none;
}
@media (max-width: 900px){
  #hero-canvas{ width: 100%; left: 0; opacity: 0.35; }
}
.hero-content{ position:relative; z-index:2; max-width: 680px; padding-top: 90px; }
.eyebrow.mono{ font-size: 0.78rem; color: var(--accent); }
.hero-title{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.6rem, 6.4vw, 5.2rem);
  line-height: 1.03;
  letter-spacing: -0.02em;
  margin: 10px 0 26px;
}
.hero-title-accent{ color: var(--accent); }
.hero-sub{
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: var(--ink-soft);
  max-width: 480px;
  margin: 0 0 40px;
}
.hero-actions{ display:flex; gap: 16px; flex-wrap:wrap; }

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 14px 26px;
  font-size: 0.92rem; font-weight: 500;
  border-radius: 2px;
  transition: all 0.25s ease;
  border: 1px solid transparent;
}
.btn-primary{ background: var(--ink); color: var(--paper); }
.btn-primary:hover{ background: var(--accent); }
.btn-ghost{ border-color: var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover{ border-color: var(--ink); }

.hero-scroll-cue{
  position:absolute; left: var(--gutter); bottom: 40px; z-index:2;
  display:flex; align-items:center; gap:12px;
  color: var(--ink-faint); font-size: 0.72rem; text-transform:uppercase;
}
.scroll-line{ width:1px; height:40px; background: var(--line); position:relative; overflow:hidden; }
.scroll-line i{ position:absolute; top:-40px; left:0; width:100%; height:40%; background: var(--accent); animation: scrollCue 2.2s ease-in-out infinite; }
@keyframes scrollCue{ 0%{ top:-40%; } 100%{ top:100%; } }

.hero-coords{
  position:absolute; right: var(--gutter); bottom: 40px; z-index:2;
  color: var(--ink-faint); font-size: 0.72rem;
}

/* ============================================
   Marquee
   ============================================ */
.marquee{
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  overflow:hidden; background: var(--bg-alt);
  padding: 16px 0;
}
.marquee-track{
  display:flex; gap: 14px; white-space:nowrap; width: max-content;
  font-family: var(--font-mono); font-size: 0.85rem; color: var(--ink-soft);
  animation: marqueeScroll 32s linear infinite;
}
.marquee-track span:nth-child(2n){ color: var(--accent); }
@keyframes marqueeScroll{ from{ transform: translateX(0); } to{ transform: translateX(-50%); } }

/* ============================================
   Servizi
   ============================================ */
.servizi{ padding: 140px 0 100px; }
.servizi-grid{
  display:grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: var(--line);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  margin: 0 var(--gutter);
}
.servizio-card{
  background: var(--bg); padding: 44px 40px;
  opacity: 0; transform: translateY(24px);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.servizio-card:hover{ background: var(--paper); box-shadow: inset 0 0 0 1px var(--line); }
.servizio-code{ color: var(--brass); font-size: 0.8rem; margin-bottom: 18px; }
.servizio-card h3{
  font-family: var(--font-display); font-weight: 600;
  font-size: 1.3rem; margin: 0 0 14px; letter-spacing: -0.01em;
}
.servizio-card p{ color: var(--ink-soft); margin: 0 0 22px; font-size: 0.95rem; }
.servizio-list{ display:flex; flex-direction: column; gap: 6px; font-size: 0.78rem; color: var(--ink-faint); }
.servizio-list li::before{ content: "— "; color: var(--accent); }

/* ============================================
   Metodo
   ============================================ */
.metodo{ padding: 100px 0; background: var(--bg-alt); }
.metodo-list{ max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.metodo-step{
  display:grid; grid-template-columns: 100px 1fr;
  gap: 24px; padding: 34px 0;
  border-top: 1px solid var(--line);
  opacity:0; transform: translateY(20px);
}
.metodo-list .metodo-step:last-child{ border-bottom: 1px solid var(--line); }
.metodo-num{ font-size: 1.1rem; color: var(--accent); }
.metodo-body h3{ font-family: var(--font-display); font-weight:600; font-size: 1.15rem; margin: 0 0 8px; }
.metodo-body p{ color: var(--ink-soft); margin:0; max-width: 560px; font-size: 0.95rem; }

/* ============================================
   Modellazione 3D
   ============================================ */
.modellazione{
  min-height: 100vh;
  display:grid; grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  padding: 120px var(--gutter);
  gap: 40px;
  background: var(--ink);
  color: var(--bg);
  overflow:hidden;
}
.modellazione-canvas-wrap{ position:relative; height: 480px; }
#model-frame{ width:100%; height:100%; display:block; border:none; background:transparent; }
.modellazione-content .eyebrow{ color: #7FBFC9; }
.modellazione .section-title{ color: var(--bg); }
.modellazione-text{ color: #B7BCC2; max-width: 460px; margin: 22px 0 34px; font-size: 1rem; }
.modellazione-stats{ display:flex; flex-direction:column; gap: 14px; font-size: 0.82rem; color: #E7E5DD; }
.modellazione-stats .stat-label{ color: var(--brass); margin-right: 10px; }

/* ============================================
   Chi sono
   ============================================ */
.chi-siamo{ padding: 120px 0; }
.chi-siamo-inner{ max-width: 780px; margin: 0 auto; padding: 0 var(--gutter); }
.chi-siamo-text{ color: var(--ink-soft); font-size: 1.05rem; margin: 24px 0 34px; }
.chi-siamo-badges{ display:flex; flex-wrap:wrap; gap: 12px; }
.chi-siamo-badges span{
  border: 1px solid var(--line); padding: 8px 14px; font-size: 0.75rem; color: var(--ink-soft);
}

/* ============================================
   Contatti
   ============================================ */
.contatti{ padding: 120px 0 80px; background: var(--bg-alt); }

.contatti-options{
  max-width: var(--container); margin: 0 auto 56px; padding: 0 var(--gutter);
  display:grid; grid-template-columns: 1fr 1fr; gap: 28px;
}
.contact-option{
  display:flex; flex-direction:column; align-items:flex-start; gap: 14px;
  background: var(--paper); border: 1px solid var(--line); border-radius: 4px;
  padding: 40px 36px; text-decoration:none; color: var(--ink);
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.contact-option:hover{
  border-color: var(--accent); transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(27,30,34,0.08);
}
.contact-option-icon{
  display:flex; align-items:center; justify-content:center;
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent);
}
.contact-option-icon svg{ width: 26px; height: 26px; }
.contact-option--whatsapp .contact-option-icon{ background: #e5f3ea; color: #1f8a4c; }
.contact-option h3{ font-family: var(--font-display); font-weight:600; font-size: 1.2rem; margin: 0; }
.contact-option p{ margin:0; color: var(--ink-soft); font-size: 0.95rem; }
.contact-option-cta{ margin-top: 6px; font-size: 0.85rem; color: var(--accent); }
.contact-option--whatsapp .contact-option-cta{ color: #1f8a4c; }

.contatti-meta{
  max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter);
  display:grid; grid-template-columns: 1fr 1fr; gap: 28px; text-align:center;
}
.info-block h3{ font-size: 0.8rem; color: var(--accent); margin: 0 0 8px; text-transform: uppercase; }
.info-block p{ margin:0; color: var(--ink-soft); }
.info-block a:hover{ color: var(--accent); }

/* ============================================
   Footer
   ============================================ */
.footer{ padding: 40px var(--gutter) 30px; }
.footer-top{ display:flex; align-items:center; justify-content:space-between; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.footer-back{ color: var(--ink-soft); font-size: 0.8rem; }
.footer-back:hover{ color: var(--accent); }
.footer-bottom{ display:flex; justify-content:space-between; padding-top: 18px; font-size: 0.72rem; color: var(--ink-faint); flex-wrap:wrap; gap: 8px; }

/* ============================================
   Page hero (banner per le sottopagine)
   ============================================ */
.page-hero{
  padding: 160px var(--gutter) 80px;
  border-bottom: 1px solid var(--line);
  max-width: var(--container);
  margin: 0 auto;
}
.page-hero-title{
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2.2rem, 4.4vw, 3.6rem);
  line-height: 1.08; letter-spacing: -0.01em;
  margin: 10px 0 20px;
}
.page-hero-sub{ color: var(--ink-soft); max-width: 560px; font-size: 1.05rem; margin: 0; }

/* ============================================
   Home — teaser grid (link alle altre pagine)
   ============================================ */
.teasers{ padding: 100px 0; }
.teasers-grid{
  display:grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--line); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  margin: 0 var(--gutter);
}
.teaser-card{
  background: var(--bg); padding: 40px 34px;
  display:flex; flex-direction:column; gap: 16px;
  transition: background 0.3s ease;
}
.teaser-card:hover{ background: var(--paper); }
.teaser-card h3{ font-family: var(--font-display); font-weight:600; font-size: 1.2rem; margin:0; }
.teaser-card p{ color: var(--ink-soft); font-size: 0.92rem; margin: 0; flex-grow: 1; }
.teaser-card .teaser-link{ color: var(--accent); font-size: 0.85rem; }
.teaser-card .teaser-link:hover{ color: var(--brass); }

/* ============================================
   Portfolio
   ============================================ */
.portfolio{ padding: 60px 0 120px; }
.portfolio-wip{
  max-width: 560px; margin: 0 auto; padding: 0 var(--gutter);
  text-align: center; display:flex; flex-direction:column; align-items:center; gap: 16px;
}
.portfolio-wip-icon{ color: var(--brass); font-size: 1.1rem; letter-spacing: 0.2em; }
.portfolio-wip h2{
  font-family: var(--font-display); font-weight:600; font-size: 1.6rem;
  margin: 0; letter-spacing: -0.01em;
}
.portfolio-wip p{ color: var(--ink-soft); margin: 0 0 8px; }
.portfolio-grid{
  display:grid; grid-template-columns: repeat(2, 1fr); gap: 28px;
  max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter);
}
.portfolio-card{
  border: 1px solid var(--line); padding: 32px; background: var(--bg);
  opacity: 0; transform: translateY(20px);
}
.portfolio-card-top{ display:flex; justify-content:space-between; align-items:baseline; margin-bottom: 18px; }
.portfolio-tag{ color: var(--brass); font-size: 0.76rem; }
.portfolio-year{ color: var(--ink-faint); font-size: 0.76rem; }
.portfolio-card h3{ font-family: var(--font-display); font-weight:600; font-size: 1.15rem; margin: 0 0 12px; }
.portfolio-card p{ color: var(--ink-soft); font-size: 0.92rem; margin: 0; }
.portfolio-placeholder-note{
  max-width: var(--container); margin: 0 auto 40px; padding: 0 var(--gutter);
  color: var(--ink-faint); font-size: 0.82rem;
}

/* ============================================
   Reveal animation helper (JS toggles .is-visible)
   ============================================ */
.servizio-card.is-visible, .metodo-step.is-visible, .portfolio-card.is-visible{
  opacity: 1; transform: translateY(0);
}

/* ============================================
   Focus visibility
   ============================================ */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline: 2px solid var(--accent); outline-offset: 3px;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 980px){
  .modellazione{ grid-template-columns: 1fr; }
  .modellazione-canvas-wrap{ height: 340px; order: -1; }
  .contatti-options{ grid-template-columns: 1fr; gap: 20px; }
  .contatti-meta{ grid-template-columns: 1fr; gap: 32px; }
  .servizi-grid{ grid-template-columns: 1fr; }
  .teasers-grid{ grid-template-columns: 1fr; }
  .portfolio-grid{ grid-template-columns: 1fr; }
}

@media (max-width: 720px){
  .nav-links{
    position: fixed; top: 0; right: 0; height: 100svh; width: min(78vw, 320px);
    background: var(--paper); flex-direction:column; align-items:flex-start;
    justify-content:center; gap: 28px; padding: 40px var(--gutter);
    transform: translateX(100%); transition: transform 0.4s ease;
    box-shadow: -8px 0 24px rgba(0,0,0,0.08);
  }
  .nav-links.open{ transform: translateX(0); }
  .nav-toggle{
    display:flex; flex-direction:column; justify-content:center; gap:5px;
    width: 36px; height: 32px; background:none; border:none; cursor:pointer; z-index: 110;
  }
  .nav-toggle span{ display:block; width:100%; height:1px; background: var(--ink); transition: transform 0.3s ease, opacity 0.3s ease; }
  .nav-toggle[aria-expanded="true"] span:first-child{ transform: translateY(3px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:last-child{ transform: translateY(-3px) rotate(-45deg); }
  .metodo-step{ grid-template-columns: 60px 1fr; }
}