/* =========================================================
   SUN EXPERT — Minimal Light Theme
   ========================================================= */

:root {
  /* Light palette — colors from official Sun Expert logo */
  --bg:           #ffffff;
  --bg-soft:      #f8faff;   /* very light blue tint */
  --bg-muted:     #eef2f9;
  --line:         #e3e8f0;
  --line-2:       #c8d2e1;

  --ink:          #0a1a33;   /* deep navy, derived from logo blue */
  --ink-2:        #1d2b45;
  --muted:        #5b6a85;
  --muted-2:      #8a98ad;

  /* Brand */
  --brand-blue:        #0d569d;   /* logo blue (X + lettering) */
  --brand-blue-dark:   #094078;
  --brand-blue-soft:   #e6eef7;
  --brand-yellow:      #f7c353;   /* logo sun yellow */
  --brand-yellow-dark: #e2a833;
  --brand-yellow-soft: #fdf3d6;

  /* aliases for backwards compat */
  --accent:       var(--brand-blue);
  --accent-soft:  var(--brand-blue-soft);

  --radius-sm: 4px;
  --radius:    10px;
  --radius-lg: 18px;

  --container: 1180px;
  --gutter:    clamp(20px, 4vw, 40px);

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body:    "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --ease:     cubic-bezier(.2,.7,.2,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
}

* { box-sizing: border-box; }
*::selection { background: var(--brand-blue); color: #fff; }

html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; text-decoration: none; transition: color .25s var(--ease), opacity .25s var(--ease); }
a:hover { opacity: .7; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 0.6em;
  color: var(--ink);
}

h1 { font-size: clamp(2.6rem, 7vw, 5rem); }
h2 { font-size: clamp(1.9rem, 4vw, 3rem); }
h3 { font-size: clamp(1.05rem, 1.4vw, 1.2rem); font-family: var(--font-body); font-weight: 500; letter-spacing: -0.005em; }

p { color: var(--ink-2); }

em {
  font-style: italic;
  color: var(--brand-blue);
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section { padding: clamp(72px, 11vw, 140px) 0; position: relative; }
.section__head {
  max-width: 720px;
  margin: 0 auto clamp(48px, 7vw, 80px);
  text-align: left;
}
.section__head h2 { margin: 0 0 .35em; }
.lead { font-size: 1.05rem; color: var(--muted); max-width: 60ch; }

.eyebrow {
  font-family: var(--font-body);
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--muted);
  margin: 0 0 1.4em;
  font-weight: 500;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: .92rem;
  letter-spacing: -.005em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .35s var(--ease-out);
  white-space: nowrap;
}
.btn--primary {
  background: var(--brand-blue);
  color: #fff;
}
.btn--primary:hover { background: var(--brand-blue-dark); opacity: 1; }
.btn--text {
  background: transparent;
  color: var(--brand-blue);
  padding-left: 4px;
  padding-right: 4px;
  border-radius: 0;
  border-bottom: 1px solid transparent;
}
.btn--text:hover {
  opacity: 1;
  color: var(--brand-blue-dark);
  border-bottom-color: var(--brand-blue);
}
.btn--block { width: 100%; }
.btn--xl { padding: 17px 30px; font-size: 1rem; }

/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 22px 0;
  transition: padding .3s var(--ease), background .3s var(--ease), border-color .3s var(--ease);
  background: rgba(255,255,255,0);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  padding: 14px 0;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-color: var(--line);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-display);
  font-weight: 500; font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--brand-blue);
}
.logo__mark { display: grid; place-items: center; }
.logo__img {
  width: auto;
  height: 38px;
  display: block;
  /* The official logo is on a white background — mix-blend keeps it crisp */
  background: transparent;
  border-radius: 2px;
}
.logo__text {
  font-feature-settings: "ss01";
  font-weight: 600;
  letter-spacing: 0.01em;
}
.footer__brand .logo__img { height: 34px; }

.nav__links { display: flex; gap: 32px; }
.nav__links a {
  font-family: var(--font-body);
  font-weight: 400; font-size: .92rem;
  color: var(--ink-2);
  position: relative;
}
.nav__links a:hover { opacity: 1; color: var(--accent); }
.nav__links a.is-active { color: var(--accent); }

.nav__cta { padding: 9px 18px; font-size: .85rem; }

.nav__burger {
  display: none;
  background: transparent; border: 0;
  width: 32px; height: 32px;
  cursor: pointer;
  padding: 0;
}
.nav__burger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--ink);
  margin: 5px auto;
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(3px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }

/* ---------- HERO ---------- */
.hero {
  padding: 160px 0 0;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: end;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
  min-height: 92vh;
}
.hero__inner { padding: 0; max-width: 600px; padding-bottom: clamp(40px, 8vw, 100px); }
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .18em;
  color: var(--brand-blue);
  margin: 0 0 24px;
  font-weight: 600;
}
.hero__eyebrow::before {
  content: "";
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--brand-yellow);
  box-shadow: 0 0 0 4px var(--brand-yellow-soft);
}
.hero__title {
  font-size: clamp(2.6rem, 7.2vw, 5.2rem);
  line-height: 1.02;
  margin: 0 0 28px;
  letter-spacing: -0.03em;
  font-weight: 400;
}
.hero__sub {
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  color: var(--muted);
  max-width: 50ch;
  margin: 0 0 40px;
  line-height: 1.5;
}
.hero__ctas { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; }

.hero__visual {
  position: relative;
  height: 70vh;
  min-height: 480px;
  max-height: 720px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-soft);
  margin-bottom: clamp(40px, 6vw, 80px);
}
.hero__visual > .hero__photo[data-photo] {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 2;
}
/* Brand visual placeholder: sole giallo (cerchio) ispirato al logo,
   visibile finché la foto reale non è caricata. */
.hero__visual {
  --px: 0px;
  --py: 0px;
}
.hero__visual::before {
  content: "";
  position: absolute;
  top: 18%;
  left: 50%;
  transform: translate(calc(-50% + var(--px)), var(--py));
  width: 56%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fadc83 0%, var(--brand-yellow) 60%, var(--brand-yellow-dark) 100%);
  box-shadow: 0 30px 80px -20px rgba(247, 195, 83, .55);
  z-index: 1;
  animation: sunFloat 9s ease-in-out infinite, sunGlow 5s ease-in-out infinite;
  transition: transform .4s var(--ease-out);
}
@keyframes sunFloat {
  0%, 100% { transform: translate(calc(-50% + var(--px)), var(--py)); }
  50%      { transform: translate(calc(-50% + var(--px)), calc(var(--py) - 16px)); }
}
@keyframes sunGlow {
  0%, 100% { box-shadow: 0 30px 80px -20px rgba(247, 195, 83, .55); }
  50%      { box-shadow: 0 40px 110px -10px rgba(247, 195, 83, .8); }
}
/* faint solar rays around the sun */
.hero__visual .hero__rays {
  position: absolute;
  top: 18%; left: 50%;
  width: 90%; aspect-ratio: 1;
  transform: translateX(-50%);
  background:
    conic-gradient(from 0deg,
      transparent 0deg, rgba(247,195,83,.18) 20deg, transparent 40deg,
      transparent 60deg, rgba(247,195,83,.12) 80deg, transparent 100deg,
      transparent 120deg, rgba(247,195,83,.18) 140deg, transparent 160deg,
      transparent 180deg, rgba(247,195,83,.12) 200deg, transparent 220deg,
      transparent 240deg, rgba(247,195,83,.18) 260deg, transparent 280deg,
      transparent 300deg, rgba(247,195,83,.12) 320deg, transparent 340deg);
  border-radius: 50%;
  mask: radial-gradient(circle, transparent 28%, #000 36%, #000 60%, transparent 70%);
  -webkit-mask: radial-gradient(circle, transparent 28%, #000 36%, #000 60%, transparent 70%);
  animation: rayRotate 60s linear infinite;
  z-index: 0;
  pointer-events: none;
}
@keyframes rayRotate { to { transform: translateX(-50%) rotate(360deg); } }
.hero__visual::after {
  content: "Power from the Sun";
  position: absolute;
  bottom: 32px;
  left: 32px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--brand-blue);
  z-index: 1;
  letter-spacing: -0.005em;
}
/* When real image loads, hide the placeholder sun + caption */
.hero__visual.has-photo::before,
.hero__visual.has-photo::after { display: none; }

/* ---------- INTRO ---------- */
.intro { background: var(--bg); border-top: 1px solid var(--line); }
.intro__grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
  margin-bottom: clamp(60px, 8vw, 110px);
}
.intro__grid .eyebrow { margin-top: 12px; }
.intro__title {
  font-size: clamp(1.8rem, 3.3vw, 2.8rem);
  line-height: 1.2;
  max-width: 26ch;
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 0;
}

.intro__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 4vw, 60px);
  padding: clamp(40px, 5vw, 56px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(60px, 8vw, 110px);
}
.stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4.5vw, 3.6rem);
  font-weight: 500;
  line-height: 1;
  color: var(--brand-blue);
  letter-spacing: -0.03em;
}
.stat__label {
  font-size: .92rem;
  color: var(--muted);
  letter-spacing: -0.005em;
}

.intro__areas {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}
.intro__areas .eyebrow { margin-top: 12px; }
.areas {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--line);
}
.areas li {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  align-items: baseline;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  transition: padding .35s var(--ease);
}
.areas li:hover { padding-left: 8px; }
.areas__num {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--muted);
  letter-spacing: 0;
}
.areas__text {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--ink);
  line-height: 1.3;
}

/* ---------- SERVIZI ---------- */
.services { background: var(--bg); border-top: 1px solid var(--line); }

.services__list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.srv {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: clamp(20px, 4vw, 60px);
  padding: clamp(40px, 6vw, 60px) 0;
  border-bottom: 1px solid var(--line);
  transition: background .3s var(--ease);
}
.srv:hover { background: var(--bg-soft); }
.srv__num {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0;
  padding-top: 4px;
}
.srv__body {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: clamp(20px, 4vw, 60px);
}
.srv h3 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.4vw, 2rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin: 0;
  line-height: 1.1;
}
.srv__lead {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: .98rem;
}
.srv__list {
  list-style: none; padding: 0; margin: 0;
}
.srv__list li {
  position: relative;
  padding: 12px 0 12px 26px;
  font-size: .98rem;
  color: var(--ink-2);
  border-bottom: 1px dashed var(--line);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity .6s var(--ease-out), transform .6s var(--ease-out), padding-left .3s var(--ease);
}
.srv.is-visible .srv__list li,
.srv__list.in-view li {
  opacity: 1;
  transform: translateX(0);
}
.srv.is-visible .srv__list li:nth-child(1) { transition-delay: .1s; }
.srv.is-visible .srv__list li:nth-child(2) { transition-delay: .2s; }
.srv.is-visible .srv__list li:nth-child(3) { transition-delay: .3s; }
.srv.is-visible .srv__list li:nth-child(4) { transition-delay: .4s; }
.srv__list li:hover { padding-left: 32px; color: var(--ink); }
.srv__list li:last-child { border-bottom: 0; }
.srv__list li::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--brand-yellow);
  box-shadow: 0 0 0 3px var(--brand-yellow-soft);
}

/* ---------- TECNOLOGIE ---------- */
.tech { background: var(--bg-soft); border-top: 1px solid var(--line); }
.tech__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 32px);
}
.tech__card {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.tech__media {
  aspect-ratio: 4/5;
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--bg-muted);
  background-size: cover;
  background-position: center;
  transition: transform .6s var(--ease-out);
}
.tech__card:hover .tech__media { transform: scale(1.015); }
.tech__card figcaption { padding: 0 4px; }
.tech__card h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
  margin: 0 0 6px;
  letter-spacing: -0.015em;
}
.tech__card p {
  margin: 0;
  font-size: .92rem;
  color: var(--muted);
}

/* ---------- REALIZZAZIONI — Showcase unico ---------- */
.works { background: var(--bg); border-top: 1px solid var(--line); }

.showcase {
  position: relative;
}
.showcase__viewport {
  position: relative;
  aspect-ratio: 16/9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--bg-muted);
}
.showcase__viewport > .showcase__slide[data-photo] {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  background-size: cover;
  background-position: center;
  transition: opacity 1.2s var(--ease-out), transform 8s var(--ease-out);
  z-index: 1;
  transform: scale(1.02);
}
.showcase__viewport > .showcase__slide[data-photo].is-active {
  opacity: 1;
  z-index: 2;
  transform: scale(1);
}
/* Hide placeholder pattern label on showcase slides */
.showcase__slide::after { display: none !important; }
/* Dark gradient overlay for legible content */
.showcase__slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      rgba(10,26,51,0) 30%,
      rgba(10,26,51,.55) 75%,
      rgba(10,26,51,.85) 100%),
    linear-gradient(90deg,
      rgba(10,26,51,.35) 0%,
      rgba(10,26,51,0) 50%);
  z-index: 1;
}
.showcase__content {
  position: absolute;
  bottom: clamp(28px, 4vw, 52px);
  left: clamp(28px, 4vw, 60px);
  right: clamp(28px, 4vw, 60px);
  max-width: 640px;
  z-index: 2;
  color: #fff;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 1.1s var(--ease-out) .25s, transform 1.1s var(--ease-out) .25s;
}
.showcase__slide.is-active .showcase__content {
  opacity: 1;
  transform: translateY(0);
}
.showcase__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: .16em;
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.18);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: #fff;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,.22);
  margin-bottom: 18px;
}
.showcase__tag::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--brand-yellow);
  box-shadow: 0 0 10px rgba(247,195,83,.7);
}
.showcase__content h3 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.6rem);
  font-weight: 400;
  color: #fff;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-shadow: 0 2px 20px rgba(0,0,0,.25);
}
.showcase__content p {
  color: rgba(255,255,255,.86);
  font-size: 1rem;
  max-width: 56ch;
  margin: 0;
  line-height: 1.5;
}

/* Bottom control bar */
.showcase__bar {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 24px);
  padding-top: clamp(20px, 2.5vw, 32px);
  flex-wrap: wrap;
}
.showcase__nav {
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  background: var(--bg);
  cursor: pointer;
  display: grid;
  place-items: center;
  color: var(--ink);
  transition: background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease), transform .25s var(--ease);
  flex-shrink: 0;
}
.showcase__nav:hover {
  background: var(--brand-blue);
  border-color: var(--brand-blue);
  color: #fff;
  transform: translateY(-2px);
}
.showcase__progress {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--muted);
  letter-spacing: 0;
}
.showcase__current {
  color: var(--brand-blue);
  font-size: 1.4rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.showcase__separator { color: var(--muted-2); }
.showcase__total { font-variant-numeric: tabular-nums; }

.showcase__dots {
  display: flex;
  gap: 8px;
  margin-left: auto;
  flex-wrap: wrap;
}
.showcase__dots button {
  width: 28px; height: 4px;
  border-radius: 2px;
  border: 0;
  padding: 0;
  background: var(--line-2);
  cursor: pointer;
  transition: background .25s var(--ease), width .35s var(--ease);
}
.showcase__dots button:hover { background: var(--brand-blue-soft); }
.showcase__dots button.is-active {
  background: var(--brand-blue);
  width: 44px;
}

/* ---------- CTA ---------- */
.cta {
  background:
    radial-gradient(900px 450px at 80% 20%, var(--brand-yellow-soft) 0%, transparent 65%),
    radial-gradient(700px 500px at 10% 90%, var(--brand-blue-soft) 0%, transparent 60%),
    var(--bg-soft);
  border-top: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  top: 50%; right: -80px;
  transform: translateY(-50%);
  width: 280px; height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fadc83 0%, var(--brand-yellow) 60%, var(--brand-yellow-dark) 100%);
  filter: blur(40px);
  opacity: .35;
  pointer-events: none;
}
.cta__inner {
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.cta__inner .eyebrow { margin-bottom: 1em; }
.cta__inner h2 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  margin: 0 0 18px;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.cta__inner p {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 50ch;
  margin: 0 auto 38px;
}

/* ---------- CONTATTI ---------- */
.contact { background: var(--bg); border-top: 1px solid var(--line); }
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(40px, 6vw, 100px);
  align-items: start;
}
.contact__intro h2 { margin: 0 0 18px; }
.contact__intro p { color: var(--muted); max-width: 44ch; }
.contact__info {
  list-style: none; padding: 0; margin: 40px 0 0;
  display: grid;
  border-top: 1px solid var(--line);
}
.contact__info li {
  display: grid;
  grid-template-columns: 110px 1fr;
  align-items: center;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  font-size: .98rem;
}
.contact__label {
  font-size: .74rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--muted);
  font-weight: 500;
}
.contact__info a:hover { color: var(--accent); opacity: 1; }

.contact__form {
  padding: 0;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 22px;
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.field label {
  font-size: .78rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: .02em;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 0;
  border: 0;
  border-bottom: 1px solid var(--line-2);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: border-color .25s var(--ease);
  border-radius: 0;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-bottom-color: var(--ink);
}
.field textarea {
  resize: vertical;
  min-height: 80px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  padding: 14px;
}
.field textarea:focus { border-color: var(--ink); }
.field select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(135deg, var(--ink) 50%, transparent 50%);
  background-position: right 4px center, right 0px center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 24px;
  cursor: pointer;
}

.check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .84rem;
  color: var(--muted);
  margin: 8px 0 24px;
  cursor: pointer;
}
.check input {
  margin-top: 3px;
  accent-color: var(--ink);
}

.form-note {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius);
  font-size: .92rem;
  line-height: 1.45;
  border: 1px solid transparent;
}
.form-note--ok {
  background: #e8f5ec;
  color: #1d6535;
  border-color: #bcdcc6;
}
.form-note--err {
  background: #fdecec;
  color: #8a2222;
  border-color: #f0c1c1;
}
.btn:disabled {
  opacity: .6;
  cursor: wait;
}

/* ---------- DOC PAGES (privacy / cookie) ---------- */
.doc {
  padding: 140px 0 80px;
  background: var(--bg);
  min-height: 100vh;
}
.doc__inner {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: clamp(40px, 5vw, 80px);
  align-items: start;
}
.doc__head {
  grid-column: 1 / -1;
  margin-bottom: clamp(40px, 5vw, 64px);
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}
.doc__head h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  margin: .1em 0 .4em;
  letter-spacing: -0.02em;
}
.doc__meta {
  color: var(--muted);
  font-size: .92rem;
  max-width: 70ch;
}

.doc__toc {
  position: sticky;
  top: 100px;
  padding: 24px 22px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.doc__toc h2 {
  font-family: var(--font-body);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--muted);
  font-weight: 500;
  margin: 0 0 14px;
}
.doc__toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: none;
}
.doc__toc ol li {
  padding: 6px 0;
  font-size: .9rem;
  line-height: 1.35;
}
.doc__toc ol li a {
  color: var(--ink-2);
  border-bottom: 1px solid transparent;
}
.doc__toc ol li a:hover {
  opacity: 1;
  color: var(--brand-blue);
  border-bottom-color: var(--brand-blue-soft);
}

.doc__body {
  max-width: 70ch;
}
.doc__body section {
  margin-bottom: 48px;
  scroll-margin-top: 96px;
}
.doc__body section:last-child { margin-bottom: 0; }
.doc__body h2 {
  font-size: clamp(1.35rem, 2.2vw, 1.7rem);
  font-weight: 500;
  font-family: var(--font-display);
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  letter-spacing: -0.01em;
}
.doc__body h3 {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 600;
  margin: 22px 0 10px;
  color: var(--ink);
}
.doc__body p {
  margin: 0 0 14px;
  color: var(--ink-2);
  line-height: 1.65;
  font-size: .98rem;
}
.doc__body ul,
.doc__body ol {
  margin: 0 0 16px;
  padding-left: 20px;
}
.doc__body ul li,
.doc__body ol li {
  margin: 6px 0;
  color: var(--ink-2);
  line-height: 1.6;
  font-size: .98rem;
}
.doc__body ul li::marker { color: var(--brand-yellow); }
.doc__body ol li::marker { color: var(--brand-blue); font-weight: 500; }
.doc__body strong { color: var(--ink); font-weight: 600; }
.doc__body a { color: var(--brand-blue); border-bottom: 1px solid var(--brand-blue-soft); }
.doc__body a:hover { opacity: 1; border-bottom-color: var(--brand-blue); }
.doc__body code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: .88em;
  background: var(--bg-muted);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--brand-blue-dark);
}

@media (max-width: 900px) {
  .doc__inner { grid-template-columns: 1fr; }
  .doc__toc {
    position: static;
    margin-bottom: 24px;
  }
}

/* ---------- LIGHTBOX ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(8, 18, 38, .96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(20px, 4vw, 60px);
  opacity: 0;
  transition: opacity .35s var(--ease-out);
  pointer-events: none;
}
.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}
.lightbox__stage {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0;
  max-width: 1200px;
  width: 100%;
}
.lightbox__img {
  max-width: 100%;
  max-height: calc(100vh - 200px);
  width: auto;
  height: auto;
  border-radius: var(--radius);
  box-shadow: 0 30px 80px rgba(0,0,0,.5);
  object-fit: contain;
  background: var(--bg-muted);
  opacity: 0;
  transform: scale(.98);
  transition: opacity .4s var(--ease-out), transform .4s var(--ease-out);
}
.lightbox.is-open .lightbox__img {
  opacity: 1;
  transform: scale(1);
}
.lightbox__caption {
  margin-top: 18px;
  text-align: center;
  max-width: 60ch;
  color: rgba(255,255,255,.92);
}
.lightbox__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .16em;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.18);
  color: #fff;
  margin-bottom: 10px;
}
.lightbox__tag::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brand-yellow);
  box-shadow: 0 0 8px rgba(247,195,83,.7);
}
.lightbox__caption h2 {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.4vw, 1.8rem);
  font-weight: 400;
  color: #fff;
  margin: 0 0 6px;
  letter-spacing: -0.015em;
}
.lightbox__caption p {
  color: rgba(255,255,255,.65);
  font-size: .94rem;
  margin: 0;
  line-height: 1.5;
}

.lightbox__close,
.lightbox__nav {
  position: absolute;
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.22);
  background: rgba(255,255,255,.08);
  color: #fff;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
  z-index: 10;
}
.lightbox__close { top: 24px; right: 24px; }
.lightbox__nav { top: 50%; transform: translateY(-50%); }
.lightbox__prev { left: clamp(12px, 3vw, 36px); }
.lightbox__next { right: clamp(12px, 3vw, 36px); }
.lightbox__close:hover,
.lightbox__nav:hover {
  background: var(--brand-blue);
  border-color: var(--brand-blue);
  transform: scale(1.08);
}
.lightbox__nav:hover { transform: translateY(-50%) scale(1.08); }

.lightbox__counter {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,.6);
  font-family: var(--font-display);
  font-size: .95rem;
  letter-spacing: .04em;
  font-variant-numeric: tabular-nums;
}
.lightbox__counter span:first-child { color: var(--brand-yellow); font-weight: 500; }

/* Make showcase slides obviously clickable */
.showcase__viewport { cursor: zoom-in; }

/* Lock body scroll when lightbox open */
body.lightbox-open {
  overflow: hidden;
}

@media (max-width: 640px) {
  .lightbox__nav { width: 40px; height: 40px; }
  .lightbox__close { width: 40px; height: 40px; top: 14px; right: 14px; }
  .lightbox__caption p { display: none; }
}

/* ---------- COOKIE BANNER ---------- */
.cookie-banner {
  position: fixed;
  bottom: 16px;
  left: 16px;
  right: 16px;
  max-width: 540px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  box-shadow: 0 24px 60px -20px rgba(10,26,51,.25), 0 4px 16px rgba(10,26,51,.08);
  z-index: 200;
  transform: translateY(160%);
  transition: transform .55s var(--ease-out);
  font-size: .92rem;
}
.cookie-banner.is-open { transform: translateY(0); }
.cookie-banner__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 8px;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}
.cookie-banner__title::before {
  content: "";
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--brand-yellow);
  box-shadow: 0 0 0 3px var(--brand-yellow-soft);
}
.cookie-banner__text {
  color: var(--muted);
  font-size: .9rem;
  margin: 0 0 14px;
  line-height: 1.55;
}
.cookie-banner__text a { color: var(--brand-blue); }
.cookie-banner__actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.cookie-banner .btn { padding: 10px 18px; font-size: .88rem; }

/* ---------- FOOTER ---------- */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--line);
  padding: 64px 0 22px;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}
.footer__brand p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: .92rem;
}
.footer__col h4 {
  font-family: var(--font-body);
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--muted);
  margin: 0 0 16px;
  font-weight: 500;
}
.footer__col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer__col ul li {
  padding: 4px 0;
  font-size: .92rem;
  color: var(--ink-2);
}
.footer__col ul li a:hover { color: var(--accent); opacity: 1; }

.footer__social li a { color: var(--ink-2); }

.footer__bottom {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 12px 20px;
  font-size: .82rem;
  color: var(--muted);
}
.footer__bottom a { color: var(--muted); }
.footer__bottom a:hover { color: var(--ink); opacity: 1; }
.footer__copy { display: flex; flex-direction: column; gap: 4px; }
.footer__copy p { margin: 0; }
.footer__credit {
  font-size: .78rem;
  color: var(--muted-2);
  letter-spacing: 0;
}
.footer__credit a {
  color: var(--ink-2);
  border-bottom: 1px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.footer__credit a:hover {
  color: var(--brand-blue);
  border-bottom-color: var(--brand-blue-soft);
  opacity: 1;
}

/* ========================================================
   PHOTO PLACEHOLDERS (replaced by real images via JS or CSS)
   ======================================================== */
[data-photo] {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  background-color: var(--bg-muted);
}

/* WebP-first with JPG fallback via image-set (where supported) */
[data-photo="impianto-1"] {
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    url('../img/impianto-1.jpg');
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    image-set(url('../img/impianto-1.webp') type('image/webp'), url('../img/impianto-1.jpg') type('image/jpeg'));
}
[data-photo="batterie-tower"] {
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    url('../img/batterie-tower.jpg');
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    image-set(url('../img/batterie-tower.webp') type('image/webp'), url('../img/batterie-tower.jpg') type('image/jpeg'));
}
[data-photo="inverter-solis"] {
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    url('../img/inverter-solis.jpg');
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    image-set(url('../img/inverter-solis.webp') type('image/webp'), url('../img/inverter-solis.jpg') type('image/jpeg'));
}
[data-photo="quadro"] {
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    url('../img/quadro.jpg');
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    image-set(url('../img/quadro.webp') type('image/webp'), url('../img/quadro.jpg') type('image/jpeg'));
}
[data-photo="impianto-stadio"] {
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    url('../img/impianto-stadio.jpg');
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    image-set(url('../img/impianto-stadio.webp') type('image/webp'), url('../img/impianto-stadio.jpg') type('image/jpeg'));
}
[data-photo="pannelli"] {
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    url('../img/pannelli.jpg');
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    image-set(url('../img/pannelli.webp') type('image/webp'), url('../img/pannelli.jpg') type('image/jpeg'));
}
[data-photo="impianto-industriale"] {
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    url('../img/impianto-industriale.jpg');
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    image-set(url('../img/impianto-industriale.webp') type('image/webp'), url('../img/impianto-industriale.jpg') type('image/jpeg'));
}
[data-photo="impianto-montagne"] {
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    url('../img/impianto-montagne.jpg');
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    image-set(url('../img/impianto-montagne.webp') type('image/webp'), url('../img/impianto-montagne.jpg') type('image/jpeg'));
}
[data-photo="impianto-stadio-2"] {
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    url('../img/impianto-stadio-2.jpg');
  background-image:
    linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(0,0,0,.04) 100%),
    image-set(url('../img/impianto-stadio-2.webp') type('image/webp'), url('../img/impianto-stadio-2.jpg') type('image/jpeg'));
}

/* Subtle "missing photo" indicator: shows soft pattern + label */
[data-photo]::after {
  content: attr(data-photo);
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted-2);
  background:
    repeating-linear-gradient(135deg, transparent 0, transparent 14px, rgba(0,0,0,.025) 14px, rgba(0,0,0,.025) 15px);
  pointer-events: none;
  opacity: 1;
  transition: opacity .3s var(--ease);
}
/* Hide the label/pattern when the real image loaded */
[data-photo].has-photo::after { opacity: 0; }

/* ========================================================
   REVEAL ANIMATIONS
   ======================================================== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.services .srv.reveal:nth-child(1) { transition-delay: 0s; }
.services .srv.reveal:nth-child(2) { transition-delay: .08s; }
.services .srv.reveal:nth-child(3) { transition-delay: .16s; }

.tech__grid .tech__card.reveal:nth-child(1) { transition-delay: 0s; }
.tech__grid .tech__card.reveal:nth-child(2) { transition-delay: .08s; }
.tech__grid .tech__card.reveal:nth-child(3) { transition-delay: .16s; }


.hero__inner > .reveal:nth-of-type(1) { transition-delay: .05s; }
.hero__inner > .reveal:nth-of-type(2) { transition-delay: .15s; }
.hero__inner > .reveal:nth-of-type(3) { transition-delay: .25s; }
.hero__inner > .reveal:nth-of-type(4) { transition-delay: .35s; }

/* ========================================================
   RESPONSIVE
   ======================================================== */
@media (max-width: 1024px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__burger { display: block; }

  .nav__links.is-open {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    padding: 20px var(--gutter) 32px;
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(16px);
    border-top: 1px solid var(--line);
    gap: 0;
  }
  .nav__links.is-open a {
    padding: 14px 0;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--line);
  }
  .nav__links.is-open a:last-child { border-bottom: 0; }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 130px;
    min-height: auto;
  }
  .hero__inner { padding-bottom: 0; }
  .hero__visual { height: 60vh; min-height: 360px; }

  .intro__grid { grid-template-columns: 1fr; }
  .intro__grid .eyebrow { margin-top: 0; }
  .intro__areas { grid-template-columns: 1fr; }
  .intro__areas .eyebrow { margin-top: 0; }
  .intro__stats { grid-template-columns: 1fr 1fr; gap: 32px; }
  .intro__stats .stat:last-child { grid-column: span 2; }

  .srv__body { grid-template-columns: 1fr; gap: 24px; }

  .tech__grid { grid-template-columns: 1fr 1fr; }
  .tech__card:nth-child(3) { grid-column: span 2; }
  .tech__card:nth-child(3) .tech__media { aspect-ratio: 16/9; }

  .showcase__viewport { aspect-ratio: 4/3; }
  .showcase__content p { display: none; }
  .showcase__bar { justify-content: center; }
  .showcase__dots { width: 100%; justify-content: center; margin-left: 0; order: 99; }

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

  .footer__inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 640px) {
  .hero__title { font-size: clamp(2.4rem, 9vw, 3.6rem); }
  .intro__stats { grid-template-columns: 1fr; }
  .intro__stats .stat:last-child { grid-column: span 1; }
  .areas li { grid-template-columns: 50px 1fr; gap: 14px; padding: 18px 0; }
  .srv { grid-template-columns: 1fr; gap: 12px; padding: 36px 0; }
  .srv__num { padding-top: 0; }
  .tech__grid { grid-template-columns: 1fr; }
  .tech__card:nth-child(3) { grid-column: span 1; }
  .tech__card:nth-child(3) .tech__media { aspect-ratio: 4/5; }
  .showcase__viewport { aspect-ratio: 3/4; }
  .showcase__content h3 { font-size: 1.5rem; }
  .field-row { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
  .contact__info li { grid-template-columns: 100px 1fr; gap: 12px; }
  .footer__bottom { flex-direction: column; }
}

/* ---------- ACCESSIBILITÀ ---------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--brand-blue);
  color: white;
  padding: 14px 28px;
  border-radius: 0 0 var(--radius) var(--radius);
  font-weight: 500;
  z-index: 9999;
  transition: top .25s var(--ease);
  text-decoration: none;
}
.skip-link:focus {
  top: 0;
  outline: 3px solid var(--brand-yellow);
  outline-offset: 2px;
  opacity: 1;
}

/* Focus visible (only for keyboard, not mouse clicks) */
*:focus { outline: none; }
*:focus-visible {
  outline: 3px solid var(--brand-yellow);
  outline-offset: 3px;
  border-radius: 4px;
}
.btn:focus-visible {
  outline: 3px solid var(--brand-yellow);
  outline-offset: 3px;
}
.nav__links a:focus-visible {
  outline-offset: 6px;
}

/* Better contrast for muted text on light bg (WCAG AA) */
.muted-strict { color: #4d5772; }

/* Screen reader only */
.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;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001s !important;
    transition-duration: .001s !important;
  }
}