/* ======================================================
   SEREMET MECAFUSION — "Deep Industrial Silver" Design System
   ====================================================== */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Oswald:wght@400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,700;1,400&display=swap');

/* ── CSS Variables ── */
:root {
  /* Colors — Deep Industrial Silver */
  --bg-primary: #0D0D0D;
  --bg-secondary: #1A1A1B;
  --bg-tertiary: #111112;
  --silver: #C0C0C2;
  --platinum: #E5E5E5;
  --cyan-arc: #00D4FF;
  --cyan-arc-dim: rgba(0, 212, 255, 0.15);
  --cyan-arc-glow: rgba(0, 212, 255, 0.4);
  --white: #FFFFFF;
  --dark-border: rgba(192, 192, 194, 0.12);
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(192, 192, 194, 0.15);
  
  /* Heat Tint Colors */
  --heat-gold: #D4A017;
  --heat-purple: #8B5CF6;
  --heat-blue: #3B82F6;
  
  /* Typography */
  --font-heading: 'Oswald', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-accent: 'Playfair Display', serif;
  
  /* Spacing */
  --section-padding: clamp(60px, 10vw, 120px);
  --container-width: 1200px;
  --gap-sm: 8px;
  --gap-md: 16px;
  --gap-lg: 32px;
  --gap-xl: 64px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-med: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--platinum);
  line-height: 1.7;
  overflow-x: hidden;
}

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

a {
  color: var(--cyan-arc);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--white);
}

ul { list-style: none; }

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

/* ── Utility ── */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

.section-label {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--cyan-arc);
  margin-bottom: var(--gap-md);
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-label::before {
  content: '';
  width: 40px;
  height: 1px;
  background: var(--cyan-arc);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: var(--gap-lg);
}

.section-title span {
  color: var(--cyan-arc);
}

/* ── Scroll Reveal Animations ── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.85);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* ======================================================
   LOADING SCREEN — "The Welding Arc"
   ====================================================== */
#loading-screen {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  transition: opacity 0.6s ease, visibility 0.6s ease;
  will-change: opacity, visibility;
}

#loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-logo {
  width: 120px;
  height: 120px;
  position: relative;
  transform: translate3d(0, 0, 0);
  -webkit-transform: translate3d(0, 0, 0);
}

.loading-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: brightness(0.3);
  animation: logoReveal 2.5s ease forwards;
  transform: translate3d(0, 0, 0);
  -webkit-transform: translate3d(0, 0, 0);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  will-change: filter, opacity;
}

@keyframes logoReveal {
  0% { filter: brightness(0.1); }
  40% { filter: brightness(0.3); }
  70% { filter: brightness(0.8); }
  100% { filter: brightness(1) drop-shadow(0 0 20px var(--cyan-arc-glow)); }
}

.loading-arc {
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--cyan-arc);
  animation: arcSpin 2.2s linear forwards;
}

.loading-arc::after {
  content: '';
  position: absolute;
  top: 14.65%;
  left: 85.35%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--white);
  transform: translate(-50%, -50%);
  animation: arcSparks 0.15s infinite alternate;
}

@keyframes arcSpin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes arcSparks {
  0% {
    box-shadow: 
      0 0 5px 2px var(--heat-gold),
      -5px -5px 10px var(--cyan-arc),
      -2px 5px 8px var(--heat-gold);
    opacity: 0.8;
  }
  50% {
    box-shadow: 
      0 0 15px 5px var(--white),
      5px -10px 15px var(--heat-blue),
      10px 5px 20px var(--cyan-arc-glow),
      -10px -5px 8px var(--heat-gold);
    opacity: 1;
  }
  100% {
    box-shadow: 
      0 0 8px 3px var(--cyan-arc),
      8px 8px 12px var(--white),
      -8px 12px 10px var(--heat-purple);
    opacity: 0.9;
  }
}

.loading-text {
  margin-top: 30px;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--silver);
  opacity: 0;
  animation: textFade 1s ease 0.5s forwards;
}

@keyframes textFade {
  to { opacity: 1; }
}

.loading-bar {
  margin-top: 20px;
  width: 200px;
  height: 2px;
  background: var(--bg-secondary);
  border-radius: 2px;
  /* Removed overflow: hidden to allow sparks to overflow */
}

.loading-bar-fill {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan-arc), var(--white));
  box-shadow: 0 0 10px var(--cyan-arc);
  animation: barFill 2.2s linear forwards;
  position: relative;
}

.loading-bar-fill::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  width: 4px;
  height: 4px;
  background: var(--white);
  border-radius: 50%;
  transform: translateY(-50%) translateX(50%);
  animation: arcSparks 0.15s infinite alternate;
}

@keyframes barFill {
  0% { width: 0; }
  100% { width: 100%; }
}

/* ======================================================
   NAVIGATION
   ====================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition-med);
}

.navbar.scrolled {
  background: rgba(13, 13, 13, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 10px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo img {
  height: 45px;
  filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.15));
  transition: filter var(--transition-med);
}

.nav-logo:hover img {
  filter: drop-shadow(0 0 12px rgba(0, 212, 255, 0.3));
}

.nav-logo-text {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--white);
}

.nav-logo-text span {
  display: block;
  font-size: 0.55rem;
  letter-spacing: 3px;
  color: var(--silver);
  font-weight: 400;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--silver);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--cyan-arc);
  transition: width var(--transition-med);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--cyan-arc);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  font-family: var(--font-heading) !important;
  font-size: 0.75rem !important;
  letter-spacing: 2px !important;
  text-transform: uppercase !important;
  padding: 10px 24px !important;
  border: 1px solid var(--cyan-arc) !important;
  color: var(--cyan-arc) !important;
  transition: all var(--transition-med) !important;
}

.nav-cta:hover {
  background: var(--cyan-arc) !important;
  color: var(--bg-primary) !important;
  box-shadow: 0 0 20px var(--cyan-arc-dim) !important;
}

.nav-cta::after {
  display: none !important;
}

/* Mobile burger */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
  padding: 4px;
}

.nav-burger span {
  width: 28px;
  height: 2px;
  background: var(--silver);
  transition: all var(--transition-fast);
  transform-origin: center;
}

.nav-burger.active span:nth-child(1) {
  transform: rotate(45deg) translateY(5px) translateX(5px);
}

.nav-burger.active span:nth-child(2) {
  opacity: 0;
}

.nav-burger.active span:nth-child(3) {
  transform: rotate(-45deg) translateY(-5px) translateX(5px);
}

/* ======================================================
   HERO SECTION
   ====================================================== */
#hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.35) contrast(1.1);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(13, 13, 13, 0.4) 0%,
    rgba(13, 13, 13, 0.2) 40%,
    rgba(13, 13, 13, 0.6) 80%,
    rgba(13, 13, 13, 1) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 750px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  font-size: 0.7rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--cyan-arc);
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan-arc);
  box-shadow: 0 0 8px var(--cyan-arc);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 700;
  text-transform: uppercase;
  line-height: 1.05;
  color: var(--white);
  margin-bottom: 16px;
}

.hero-title .highlight {
  color: var(--cyan-arc);
  text-shadow: 0 0 30px var(--cyan-arc-dim);
}

.hero-tagline {
  font-family: var(--font-accent);
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  font-style: italic;
  color: var(--silver);
  margin-bottom: 36px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  background: var(--cyan-arc);
  color: var(--bg-primary);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all var(--transition-med);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.btn-primary:hover::before {
  transform: translateX(100%);
}

.btn-primary:hover {
  box-shadow: 0 0 30px var(--cyan-arc-dim);
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  background: transparent;
  color: var(--silver);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: 1px solid var(--dark-border);
  cursor: pointer;
  transition: all var(--transition-med);
}

.btn-secondary:hover {
  border-color: var(--cyan-arc);
  color: var(--cyan-arc);
  box-shadow: 0 0 20px var(--cyan-arc-dim);
}

/* Hero scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--silver);
  font-size: 0.65rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  opacity: 0.6;
  animation: scrollBounce 2s ease infinite;
}

.hero-scroll .scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--cyan-arc), transparent);
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ======================================================
   CHI SIAMO
   ====================================================== */
#chi-siamo {
  padding: var(--section-padding) 0;
  position: relative;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-xl);
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
}

.about-image img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  filter: brightness(0.8) contrast(1.05);
}

.about-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--glass-border);
  pointer-events: none;
}

.about-image .image-accent {
  position: absolute;
  bottom: -8px;
  right: -8px;
  width: 120px;
  height: 120px;
  border: 1px solid var(--cyan-arc);
  opacity: 0.3;
}

.about-text p {
  color: var(--silver);
  margin-bottom: var(--gap-md);
  font-size: 1.05rem;
  line-height: 1.8;
}

.about-text strong {
  color: var(--white);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-lg);
  margin-top: var(--gap-xl);
  padding-top: var(--gap-lg);
  border-top: 1px solid var(--dark-border);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--cyan-arc);
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--silver);
  margin-top: 8px;
}

/* Quote block */
.quote-block {
  margin-top: var(--gap-xl);
  padding: var(--gap-lg);
  background: var(--glass-bg);
  border-left: 3px solid var(--cyan-arc);
  border-radius: 0 4px 4px 0;
}

.quote-block p {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--platinum);
  line-height: 1.8;
}

/* ======================================================
   SERVIZI
   ====================================================== */
#servizi {
  padding: var(--section-padding) 0;
  background: var(--bg-secondary);
  position: relative;
}

#servizi::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--dark-border), transparent);
}

.servizi-header {
  text-align: center;
  margin-bottom: var(--gap-xl);
}

.servizi-header .section-label {
  justify-content: center;
}

.servizi-header .section-label::before {
  display: none;
}

.servizi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-lg);
}

.servizio-card {
  position: relative;
  padding: 40px 32px;
  background: var(--bg-primary);
  border: 1px solid var(--dark-border);
  border-radius: 4px;
  overflow: hidden;
  transition: all var(--transition-med);
}

/* Heat Tint hover effect */
.servizio-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--heat-gold), var(--heat-purple), var(--heat-blue), var(--heat-gold));
  background-size: 300% 300%;
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-med);
  animation: heatTint 4s ease infinite;
}

@keyframes heatTint {
  0% { background-position: 0% 0%; }
  50% { background-position: 100% 100%; }
  100% { background-position: 0% 0%; }
}

.servizio-card:hover::before {
  opacity: 1;
}

.servizio-card:hover {
  transform: translateY(-4px);
  border-color: transparent;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.servizio-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--cyan-arc-dim);
  border-radius: 4px;
  margin-bottom: 24px;
  transition: all var(--transition-med);
}

.servizio-card:hover .servizio-icon {
  background: var(--cyan-arc);
  box-shadow: 0 0 20px var(--cyan-arc-dim);
}

.servizio-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--cyan-arc);
  fill: none;
  stroke-width: 1.5;
  transition: stroke var(--transition-med);
}

.servizio-card:hover .servizio-icon svg {
  stroke: var(--bg-primary);
}

.servizio-card h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--white);
  margin-bottom: 16px;
}

.servizio-card p {
  color: var(--silver);
  font-size: 0.95rem;
  line-height: 1.7;
}

.servizio-tag {
  display: inline-block;
  margin-top: 20px;
  padding: 4px 12px;
  font-size: 0.65rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--cyan-arc);
  border: 1px solid var(--cyan-arc-dim);
  border-radius: 100px;
}

/* ======================================================
   GALLERIA — Sezione Principale
   ====================================================== */
#galleria {
  padding: var(--section-padding) 0;
  position: relative;
}

.galleria-header {
  text-align: center;
  margin-bottom: var(--gap-lg);
}

.galleria-header .section-label {
  justify-content: center;
}

.galleria-header .section-label::before {
  display: none;
}

.galleria-subtitle {
  color: var(--silver);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto var(--gap-lg);
  line-height: 1.7;
}

/* Gallery Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  cursor: pointer;
  border-radius: 4px;
  border: 1px solid var(--dark-border);
  transition: all var(--transition-med);
}

.gallery-item.hidden {
  display: none;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease, filter 0.4s ease;
  filter: brightness(0.8) saturate(0.9);
}

.gallery-item:hover img {
  transform: scale(1.08);
  filter: brightness(1) saturate(1);
}

.gallery-item:hover {
  border-color: var(--cyan-arc);
  box-shadow: 0 0 20px var(--cyan-arc-dim);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(13, 13, 13, 0.95) 0%,
    rgba(13, 13, 13, 0.3) 50%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity var(--transition-med);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-overlay h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--white);
  margin-bottom: 4px;
}

.gallery-overlay p {
  font-size: 0.8rem;
  color: var(--silver);
  line-height: 1.5;
}

.gallery-overlay .view-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.5);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--cyan-arc);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition-med);
}

.gallery-item:hover .view-icon {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.view-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--bg-primary);
  fill: none;
  stroke-width: 2;
}

/* Stagger animation classes */
.gallery-item.stagger-1 { transition-delay: 0.05s; }
.gallery-item.stagger-2 { transition-delay: 0.1s; }
.gallery-item.stagger-3 { transition-delay: 0.15s; }
.gallery-item.stagger-4 { transition-delay: 0.2s; }
.gallery-item.stagger-5 { transition-delay: 0.25s; }
.gallery-item.stagger-6 { transition-delay: 0.3s; }
.gallery-item.stagger-7 { transition-delay: 0.35s; }
.gallery-item.stagger-8 { transition-delay: 0.4s; }
.gallery-item.stagger-9 { transition-delay: 0.45s; }

/* ── Lightbox ── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-med);
  backdrop-filter: blur(10px);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 75vh;
  object-fit: contain;
  border-radius: 4px;
  transition: transform var(--transition-med);
}

.lightbox.active .lightbox-content img {
  transform: scale(1);
  animation: lightboxIn 0.4s ease;
}

@keyframes lightboxIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.lightbox-info {
  margin-top: 16px;
  text-align: center;
}

.lightbox-info h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--white);
}

.lightbox-info p {
  font-size: 0.85rem;
  color: var(--silver);
  margin-top: 4px;
}

.lightbox-counter {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  letter-spacing: 2px;
  color: var(--cyan-arc);
  margin-top: 8px;
}

.lightbox-close {
  position: absolute;
  top: -50px;
  right: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--silver);
  font-size: 1.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
}

.lightbox-close:hover {
  color: var(--cyan-arc);
  border-color: var(--cyan-arc);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--silver);
  font-size: 1.3rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: rgba(0,0,0,0.4);
}

.lightbox-nav:hover {
  color: var(--cyan-arc);
  border-color: var(--cyan-arc);
  background: rgba(0,0,0,0.7);
}

.lightbox-prev { left: -70px; }
.lightbox-next { right: -70px; }

/* ======================================================
   PERCHÉ SCEGLIERCI
   ====================================================== */
#perche {
  padding: var(--section-padding) 0;
  background: var(--bg-secondary);
  position: relative;
}

#perche::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--dark-border), transparent);
}

.perche-header {
  text-align: center;
  margin-bottom: var(--gap-xl);
}

.perche-header .section-label {
  justify-content: center;
}

.perche-header .section-label::before {
  display: none;
}

.perche-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap-lg);
}

.perche-item {
  text-align: center;
  padding: 40px 24px;
  background: var(--bg-primary);
  border: 1px solid var(--dark-border);
  border-radius: 4px;
  transition: all var(--transition-med);
  position: relative;
}

.perche-item:hover {
  border-color: var(--cyan-arc);
  transform: translateY(-4px);
  box-shadow: 0 0 30px var(--cyan-arc-dim);
}

.perche-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--cyan-arc-dim);
  transition: all var(--transition-med);
}

.perche-item:hover .perche-icon {
  background: var(--cyan-arc);
  box-shadow: 0 0 20px var(--cyan-arc-dim);
}

.perche-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--cyan-arc);
  fill: none;
  stroke-width: 1.5;
  transition: stroke var(--transition-med);
}

.perche-item:hover .perche-icon svg {
  stroke: var(--bg-primary);
}

.perche-item h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--white);
  margin-bottom: 12px;
}

.perche-item p {
  font-size: 0.9rem;
  color: var(--silver);
  line-height: 1.7;
}

/* ======================================================
   CTA BANNER
   ====================================================== */
.cta-banner {
  padding: var(--section-padding) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, var(--cyan-arc-dim) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner .section-title {
  margin-bottom: var(--gap-md);
}

.cta-banner p {
  font-family: var(--font-accent);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--silver);
  margin-bottom: var(--gap-lg);
}

/* ======================================================
   CONTATTI / FOOTER
   ====================================================== */
#contatti {
  padding: var(--section-padding) 0;
  background: var(--bg-secondary);
  position: relative;
}

#contatti::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--dark-border), transparent);
}

.contatti-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-xl);
}

/* Form preventivo disattivato: la colonna contatti resta da sola */
.contatti-info:only-child {
  grid-column: 1 / -1;
  max-width: 560px;
  margin: 0 auto;
}

.contatti-info h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--white);
  margin-bottom: var(--gap-lg);
}

.contatti-detail {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.contatti-detail .detail-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--cyan-arc-dim);
  border-radius: 4px;
}

.contatti-detail .detail-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--cyan-arc);
  fill: none;
  stroke-width: 1.5;
}

.contatti-detail .detail-text h4 {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: 4px;
}

.contatti-detail .detail-text p {
  color: var(--platinum);
  font-size: 1rem;
}

.contatti-detail .detail-text p a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-med);
}

.contatti-detail .detail-text p a:hover {
  color: var(--cyan-arc);
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-form h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--white);
  margin-bottom: var(--gap-md);
}

.form-group {
  position: relative;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--dark-border);
  border-radius: 4px;
  color: var(--platinum);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--cyan-arc);
  box-shadow: 0 0 10px var(--cyan-arc-dim);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(192, 192, 194, 0.4);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-submit {
  align-self: flex-start;
}

/* ── Footer ── */
.site-footer {
  padding: 40px 0;
  border-top: 1px solid var(--dark-border);
  background: var(--bg-primary);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo img {
  height: 35px;
}

.footer-logo span {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--silver);
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(192, 192, 194, 0.5);
}

.footer-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.footer-tags span {
  font-size: 0.65rem;
  color: var(--cyan-arc);
  opacity: 0.6;
}

/* ======================================================
   RESPONSIVE
   ====================================================== */
@media (max-width: 1024px) {
  .servizi-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .perche-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }
}

@media (max-width: 768px) {
  /* Nav mobile */
  .nav-burger {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(13, 13, 13, 0.97);
    backdrop-filter: blur(30px);
    flex-direction: column;
    justify-content: center;
    gap: 24px;
    padding: 40px;
    transition: right var(--transition-med);
    border-left: 1px solid var(--glass-border);
  }
  
  .nav-links.open {
    right: 0;
  }
  
  .nav-links a {
    font-size: 1rem;
  }
  
  /* Sections */
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--gap-lg);
  }
  
  .about-image {
    order: -1;
  }
  
  .about-stats {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .servizi-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  
  .perche-grid {
    grid-template-columns: 1fr;
  }
  
  .contatti-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }
  .lightbox-close { top: -45px; right: 0; }
  
  .lightbox-nav {
    width: 40px;
    height: 40px;
  }
  
  /* Footer */
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-title {
    font-size: clamp(2rem, 8vw, 3.5rem);
  }
  
  .hero-scroll {
    display: none;
  }
}

@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .btn-primary,
  .btn-secondary {
    justify-content: center;
    width: 100%;
  }
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--dark-border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--silver);
}

/* ── Selection ── */
::selection {
  background: var(--cyan-arc);
  color: var(--bg-primary);
}

/* ======================================================
   COOKIE CONSENT BANNER (GDPR)
   ====================================================== */
.cookie-overlay {
  position: fixed;
  inset: 0;
  width: 100%;
  z-index: 10000;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: clamp(12px, 4vw, 24px);
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: opacity 0.4s ease, visibility 0.4s ease;
  opacity: 1;
  visibility: visible;
}

.cookie-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.cookie-banner {
  position: relative;
  width: min(460px, 100%);
  max-height: calc(100vh - 24px);
  overflow-y: auto;
  background: rgba(26, 26, 27, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  padding: 28px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7), 0 0 24px rgba(0, 212, 255, 0.06);
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.45s ease;
  transform: translateY(0);
  opacity: 1;
}

.cookie-overlay.hidden .cookie-banner {
  transform: translateY(24px);
  opacity: 0;
}

@media (min-width: 768px) {
  .cookie-overlay {
    align-items: center;
  }
}

.cookie-close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: transparent;
  color: var(--silver);
  cursor: pointer;
  transition: color var(--transition-med), border-color var(--transition-med), background var(--transition-med);
}

.cookie-close:hover {
  color: var(--white);
  border-color: var(--cyan-arc);
  background: rgba(0, 212, 255, 0.08);
}

.cookie-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.cookie-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-right: 40px;
}

.cookie-header h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--white);
}

.cookie-icon {
  color: var(--cyan-arc);
  filter: drop-shadow(0 0 5px var(--cyan-arc-glow));
}

.cookie-text {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--silver);
}

.cookie-link {
  color: var(--cyan-arc);
  text-decoration: underline;
  transition: color var(--transition-fast);
}

.cookie-link:hover {
  color: var(--white);
}

.cookie-actions {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}

.btn-sm {
  padding: 10px 20px !important;
  font-size: 0.75rem !important;
  letter-spacing: 1.5px !important;
}

body.cookie-lock {
  overflow: hidden;
}

@media (max-width: 576px) {
  .cookie-overlay {
    padding: 16px;
  }

  .cookie-banner {
    padding: 22px;
  }

  .cookie-actions {
    flex-direction: column;
  }

  .cookie-actions button {
    width: 100%;
    justify-content: center;
  }
}