/* ============================================
   Design System — Dario Manganiello
   ============================================ */

/* --- CSS Variables --- */
:root {
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Borders */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 150ms var(--ease-out);
  --transition-base: 250ms var(--ease-out);
  --transition-slow: 400ms var(--ease-out);

  /* Layout */
  --container-max: 1120px;
  --header-height: 64px;
}

/* --- Variables (Dark Mode Only) --- */
:root {
  /* Future Palette */
  --color-primary: #00d4ff;
  /* Electric Cyan */
  --color-primary-hover: #00f2ff;
  --color-primary-glow: rgba(0, 212, 255, 0.2);

  --color-secondary: #00ff9f;
  /* Emerald Green */
  --color-secondary-glow: rgba(0, 255, 159, 0.2);

  --color-tertiary: #7000ff;
  /* Electric Violet */
  --color-tertiary-glow: rgba(112, 0, 255, 0.3);

  --color-quaternary: #ff0055;
  /* Neon Pink */
  --color-quaternary-glow: rgba(255, 0, 85, 0.3);

  --color-bg: #020203;
  /* Deepest Black */
  --color-bg-night: #050508;
  /* Standard Dark */
  --color-bg-alt: #0a0a12;
  /* Blue-ish Dark for visual break */
  --color-bg-elevated: #11111a;
  /* Lighter for cards/sections */
  --color-bg-surface: #181824;
  /* Highlight surface */

  --color-bg-card: #0f1016;
  --color-bg-card-hover: #161821;
  --color-bg-darker: #000000;
  /* Pure Void */

  --color-text: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-border: #1e293b;
  --color-border-hover: #334155;
  --color-surface-glass: rgba(10, 10, 18, 0.9);

  --noise-opacity: 0.03;
  --glow-strength: 0.5;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

/* Subtle noise texture via CSS */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: var(--noise-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

a {
  color: inherit;
  text-decoration: none;
}

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

ul,
ol {
  list-style: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
}

button {
  cursor: pointer;
}

/* --- Focus states (accessibility) --- */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* --- Section defaults --- */
.section {
  padding: var(--space-4xl) 0;
  position: relative;
}

.section__header {
  max-width: 640px;
  margin-bottom: var(--space-3xl);
}

.section__label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.section__desc {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Subtle section separator */
.section+.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(80%, 600px);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: var(--radius-md);
  padding: 0.75rem 1.5rem;
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 0 0 0 var(--color-primary-glow);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 24px var(--color-primary-glow);
  transform: translateY(-1px);
}

.btn--outline {
  border: 1.5px solid var(--color-border-hover);
  color: var(--color-text);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-glow);
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
}

.btn--lg {
  padding: 0.875rem 2rem;
  font-size: 1rem;
}

.btn--whatsapp {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-whatsapp);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all var(--transition-base);
}

.btn--whatsapp:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

/* Header & Navigation (Desktop First) */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: all var(--transition-base);
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background: var(--color-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
  color: var(--color-text);
  z-index: 1002;
}

/* DESKTOP NAV Defaults */
.header__nav {
  display: flex;
  align-items: center;
}

.header__nav-list {
  display: flex;
  flex-direction: row;
  /* FORCE ROW */
  gap: var(--space-xl);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  text-decoration: none;
  position: relative;
}

.nav-link:hover {
  color: var(--color-primary);
  text-shadow: 0 0 10px var(--color-primary-glow);
}

/* Force hide mobile elements on desktop */
@media (min-width: 1024px) {

  .header__nav-footer,
  .hamburger {
    display: none !important;
  }
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header__cta {
  display: inline-flex;
}

/* Theme toggle */
.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-bg-card);
}

[data-theme="dark"] .icon-moon {
  display: none;
}

[data-theme="light"] .icon-sun {
  display: none;
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  position: relative;
  z-index: 1001;
}

.hamburger:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-card-hover);
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.hamburger.active {
  background: var(--color-primary-glow);
  border-color: var(--color-primary);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Navigation Overlay (only for mobile) */
@media (max-width: 1023px) {
  .hamburger {
    display: flex;
  }

  .header__cta {
    display: none;
  }

  .header__nav {
    position: fixed;
    inset: 0;
    background: var(--color-bg);
    padding: var(--space-5xl) var(--space-lg) var(--space-2xl);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    text-align: center;

    /* Animation state: closed */
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: scale(1.05);
    transition:
      opacity var(--transition-slow),
      visibility var(--transition-slow),
      transform var(--transition-slow);
  }

  .header__nav.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: scale(1);
  }

  /* Glassmorphism background effect */
  .header__nav::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: var(--color-primary);
    filter: blur(150px);
    opacity: 0.1;
    z-index: -1;
    pointer-events: none;
  }

  .header__nav-list {
    flex-direction: column;
    gap: var(--space-lg);
    width: 100%;
  }

  .header__nav .nav-link {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
    display: block;
    padding: var(--space-sm) 0;

    /* Animation state for links */
    opacity: 0;
    transform: translateY(20px);
    transition:
      color var(--transition-fast),
      opacity var(--transition-slow),
      transform var(--transition-slow);
  }

  .header__nav.open .nav-link {
    opacity: 1;
    transform: translateY(0);
  }

  /* Staggered link animations */
  .header__nav.open .header__nav-list li:nth-child(1) .nav-link {
    transition-delay: 0.1s;
  }

  .header__nav.open .header__nav-list li:nth-child(2) .nav-link {
    transition-delay: 0.15s;
  }

  .header__nav.open .header__nav-list li:nth-child(3) .nav-link {
    transition-delay: 0.2s;
  }

  .header__nav.open .header__nav-list li:nth-child(4) .nav-link {
    transition-delay: 0.25s;
  }

  .header__nav.open .header__nav-list li:nth-child(5) .nav-link {
    transition-delay: 0.3s;
  }

  .header__nav.open .header__nav-list li:nth-child(6) .nav-link {
    transition-delay: 0.35s;
  }

  /* Mobile footer styles */
  .header__nav-footer {
    display: block;
    width: 100%;
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--color-border);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-slow) 0.4s;
  }

  .header__nav.open .header__nav-footer {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Hero
   ============================================ */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-4xl);
  position: relative;
  overflow: hidden;
}

.hero__slideshow {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.1);
  animation: bgSlideshow 18s infinite linear;
}

/* Slideshow Timing & Ordering */
.hero__slide:nth-child(1) {
  animation-delay: 0s;
}

.hero__slide:nth-child(2) {
  animation-delay: 6s;
}

.hero__slide:nth-child(3) {
  animation-delay: 12s;
}

@keyframes bgSlideshow {
  0% {
    opacity: 0;
    transform: scale(1.15);
  }

  5% {
    opacity: 0.4;
  }

  33.33% {
    opacity: 0.4;
  }

  38.33% {
    opacity: 0;
    transform: scale(1.05);
  }

  100% {
    opacity: 0;
  }
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, transparent 0%, var(--color-bg) 90%);
  z-index: 1;
  opacity: 0.85;
}

.hero__inner {
  position: relative;
  z-index: 2;
}

.hero__content {
  max-width: 720px;
}

.hero__label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  letter-spacing: 0.02em;
}

.hero__title {
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.1875rem);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 580px;
  margin-bottom: var(--space-2xl);
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-3xl);
}

.hero__proof {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.hero__proof-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border);
}

.hero__proof-number {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.hero__proof-label {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ============================================
   Problemi
   ============================================ */
.problemi {
  background-color: var(--color-bg-darker);
  position: relative;
  /* Top separator */
  border-top: 1px solid rgba(255, 255, 255, 0.03);
}

/* Divider glow effect */
.problemi::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-quaternary-glow), transparent);
  opacity: 0.6;
}

/* ============================================
   Servizi (Macro-Aree) — Holographic Cards
   ============================================ */
.servizi {
  padding: var(--space-2xl) 0;
  position: relative;
  z-index: 10;
  margin-top: -60px;
  background: radial-gradient(circle at 50% 50%, rgba(112, 0, 255, 0.05) 0%, transparent 70%);
}

/* Subtle background touch: Cyber-grid lines */
.servizi::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at center, black, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at center, black, transparent 80%);
  pointer-events: none;
  z-index: -1;
}

.servizi__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  /* Forced 4 columns on desktop */
  gap: var(--space-lg);
}

@media (max-width: 1024px) {
  .servizi__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .servizi__grid {
    grid-template-columns: 1fr;
  }
}

.holo-card {
  background: rgba(13, 13, 20, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* Holographic Hover Effect */
.holo-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
      rgba(255, 255, 255, 0.05) 0%,
      rgba(255, 255, 255, 0) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 0;
}

.holo-card:hover {
  transform: translateY(-8px);
}

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

/* Cyan Theme (1) */
.holo-card:nth-child(1) {
  border-color: rgba(0, 212, 255, 0.1);
}

.holo-card:nth-child(1) .holo-card__icon {
  color: var(--color-primary);
  background: rgba(0, 212, 255, 0.05);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.15);
}

.holo-card:nth-child(1):hover {
  border-color: var(--color-primary);
  box-shadow: 0 10px 30px -10px rgba(0, 212, 255, 0.3);
}

/* Violet Theme (2) */
.holo-card:nth-child(2) {
  border-color: rgba(112, 0, 255, 0.1);
}

.holo-card:nth-child(2) .holo-card__icon {
  color: var(--color-tertiary);
  background: rgba(112, 0, 255, 0.05);
  box-shadow: 0 0 20px rgba(112, 0, 255, 0.15);
}

.holo-card:nth-child(2):hover {
  border-color: var(--color-tertiary);
  box-shadow: 0 10px 30px -10px rgba(112, 0, 255, 0.3);
}

/* Pink Theme (3) */
.holo-card:nth-child(3) {
  border-color: rgba(255, 0, 85, 0.1);
}

.holo-card:nth-child(3) .holo-card__icon {
  color: var(--color-quaternary);
  background: rgba(255, 0, 85, 0.05);
  box-shadow: 0 0 20px rgba(255, 0, 85, 0.15);
}

.holo-card:nth-child(3):hover {
  border-color: var(--color-quaternary);
  box-shadow: 0 10px 30px -10px rgba(255, 0, 85, 0.3);
}

/* Emerald Theme (4) */
.holo-card:nth-child(4) {
  border-color: rgba(0, 255, 159, 0.1);
}

.holo-card:nth-child(4) .holo-card__icon {
  color: var(--color-secondary);
  background: rgba(0, 255, 159, 0.05);
  box-shadow: 0 0 20px rgba(0, 255, 159, 0.15);
}

.holo-card:nth-child(4):hover {
  border-color: var(--color-secondary);
  box-shadow: 0 10px 30px -10px rgba(0, 255, 159, 0.3);
}

.holo-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-xs);
  transition: all 0.3s ease;
}

.holo-card:hover .holo-card__icon {
  transform: scale(1.1);
}

.header__logo {
  text-decoration: none;
  display: flex;
  align-items: center;
}

.brand-logo {
  height: 45px;
  width: auto;
  filter: invert(1) brightness(1.2) contrast(1.1);
  mix-blend-mode: screen;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  animation: logo-pulse 3s infinite ease-in-out;
}

.header__logo:hover .brand-logo {
  transform: scale(1.1) rotate(2deg);
  filter: invert(1) brightness(1.5) drop-shadow(0 0 8px var(--color-primary));
}

@keyframes logo-pulse {

  0%,
  100% {
    filter: invert(1) brightness(1.2) drop-shadow(0 0 2px rgba(0, 243, 255, 0.3));
  }

  50% {
    filter: invert(1) brightness(1.4) drop-shadow(0 0 12px rgba(0, 243, 255, 0.8));
    transform: scale(1.02);
  }
}

.holo-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.holo-card__text {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================
   Problemi — Cyber Cards
   ============================================ */
.problemi__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.problem-card {
  position: relative;
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  background: var(--color-bg-card);
  transition: all var(--transition-base);
  /* Preparation for animated border */
  overflow: hidden;
  border: 1px solid var(--color-border);
}

/* Cyber-border effect (Animated gradient) */
.problem-card::before {
  content: '';
  position: absolute;
  inset: -2px;
  /* Slight overflow to show the border */
  background: conic-gradient(from 0deg,
      transparent 0deg,
      transparent 150deg,
      var(--color-primary) 180deg,
      var(--color-secondary) 210deg,
      transparent 240deg);
  opacity: 0;
  transition: opacity var(--transition-base);
  animation: rotateBorder 4s infinite linear;
  z-index: 0;
}

/* The "inner" card that hides the center of the gradient */
.problem-card::after {
  content: '';
  position: absolute;
  inset: 1px;
  background: var(--color-bg-card);
  border-radius: calc(var(--radius-lg) - 1px);
  z-index: 1;
}

@keyframes rotateBorder {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.problem-card:hover {
  transform: translateY(-5px);
  border-color: transparent;
}

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

.problem-card__icon,
.problem-card__content {
  position: relative;
  z-index: 2;
}

.problem-card__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-glow);
  color: var(--color-primary);
  box-shadow: 0 0 15px var(--color-primary-glow);
}

.problem-card__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: left;
}

.problem-card__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  line-height: 1.3;
  color: var(--color-text);
}

.problem-card__text {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================
   Soluzione
   ============================================ */
.soluzione {
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg-night) 100%);
  position: relative;
  border-bottom: 1px solid var(--color-border);
}

/* ============================================
   Pipeline — Futuristic Data Flow
   ============================================ */
.pipeline {
  position: relative;
  margin-bottom: var(--space-4xl);
  padding: var(--space-xl) 0;
}

.pipeline__track {
  position: absolute;
  top: 40px;
  /* Center with node icons */
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-border);
  z-index: 1;
  border-radius: 2px;
  overflow: hidden;
}

/* The Animated Pulse (Flow) */
.pipeline__track::after {
  content: '';
  position: absolute;
  top: 0;
  left: -20%;
  width: 20%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-secondary), transparent);
  animation: dataFlow 3s infinite linear;
}

@keyframes dataFlow {
  0% {
    left: -20%;
  }

  100% {
    left: 120%;
  }
}

.pipeline__nodes {
  display: flex;
  justify-content: space-between;
  position: relative;
  z-index: 2;
  gap: var(--space-md);
}

.pipeline__node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  flex: 1;
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
}

.pipeline__node.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered entry */
.pipeline__node[data-step="1"] {
  transition-delay: 0.1s;
}

.pipeline__node[data-step="2"] {
  transition-delay: 0.2s;
}

.pipeline__node[data-step="3"] {
  transition-delay: 0.3s;
}

.pipeline__node[data-step="4"] {
  transition-delay: 0.4s;
}

.pipeline__node[data-step="5"] {
  transition-delay: 0.5s;
}

.pipeline__node[data-step="6"] {
  transition-delay: 0.6s;
}

.node-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text-secondary);
  transition: all var(--transition-base);
  box-shadow: 0 0 0 0 var(--color-primary-glow);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* Pulse effect for nodes */
.pipeline__node:hover .node-icon {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 0 20px var(--color-primary-glow);
  background: var(--color-bg-card-hover);
}

.node-label {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

.pipeline__node:hover .node-label {
  color: var(--color-text);
}

/* Mobile responsive pipeline */
@media (max-width: 768px) {
  .pipeline__nodes {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xl);
    padding-left: 27px;
  }

  .pipeline__track {
    top: 0;
    bottom: 0;
    left: 27px;
    right: auto;
    width: 2px;
    height: 100%;
  }

  .pipeline__track::after {
    width: 100%;
    height: 20%;
    background: linear-gradient(180deg, transparent, var(--color-primary), var(--color-secondary), transparent);
    animation: dataFlowVertical 3s infinite linear;
  }

  @keyframes dataFlowVertical {
    0% {
      top: -20%;
    }

    100% {
      top: 120%;
    }
  }

  .pipeline__node {
    flex-direction: row;
    gap: var(--space-lg);
    text-align: left;
    flex: none;
  }

  .node-icon {
    width: 48px;
    height: 48px;
  }
}

.soluzione__pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.pillar {
  padding: var(--space-xl);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  transition: all var(--transition-base);
}

.pillar:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg-card-hover);
}

.pillar__number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-mono);
  margin-bottom: var(--space-md);
}

.pillar__title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.pillar__text {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}


/* Case Study styles are defined at the end of file */

.case-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  overflow: hidden;
  transition: all var(--transition-base);
}

.case-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.case-card__image {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.case-card__placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-elevated);
  color: var(--color-text-muted);
}

.case-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: var(--space-lg);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.case-card:hover .case-card__overlay {
  opacity: 1;
}

.case-card__metrics {
  display: flex;
  gap: var(--space-xl);
}

.case-card__metric-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
}

.case-card__metric-label {
  display: block;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
}

.case-card__body {
  padding: var(--space-lg);
}

.case-card__sector {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  display: block;
}

.case-card__title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.case-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================
   Processo
   ============================================ */
.processo {
  background-color: var(--color-bg-night);
  background-image: radial-gradient(circle at 100% 0%, rgba(112, 0, 255, 0.03) 0%, transparent 40%);
  position: relative;
  border-top: 1px solid var(--color-border);
}

.processo__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  position: relative;
}

/* Vertical line connecting steps */
.processo__steps::before {
  content: '';
  position: absolute;
  left: 23px;
  top: 40px;
  bottom: 40px;
  width: 1px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-border));
}

.step {
  display: flex;
  gap: var(--space-xl);
  align-items: flex-start;
  position: relative;
}

.step__number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--color-primary);
  background: var(--color-bg-card);
  border: 1.5px solid var(--color-primary);
  border-radius: 50%;
  z-index: 1;
}

.step__title {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.step__text {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================
   CTA Finale
   ============================================ */
.cta-finale {
  padding: var(--space-3xl) 0;
}

.cta-box {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-primary-glow), var(--color-bg-card));
  border: 1px solid var(--color-primary);
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, var(--color-primary-glow), transparent 50%);
  pointer-events: none;
}

.cta-box__title {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
  position: relative;
}

.cta-box__text {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  max-width: 520px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.7;
  position: relative;
}

/* ============================================
   Contatti
   ============================================ */
.contatti {
  background: linear-gradient(180deg, var(--color-bg) 0%, #080810 100%);
  position: relative;
  border-top: 1px solid var(--color-border);
}

.contatti__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%236b6b80' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-submit {
  width: 100%;
}

.contatti__sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contatti__method-title {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.contatti__link {
  font-size: 0.9375rem;
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.contatti__link:hover {
  color: var(--color-primary-hover);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ============================================
   Sticky CTA (mobile)
   ============================================ */
.sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--color-border);
  z-index: 999;
  transform: translateY(100%);
  transition: transform var(--transition-base);
}

.sticky-cta.visible {
  transform: translateY(0);
}

.sticky-cta__btn {
  width: 100%;
}

/* ============================================
   Animations (IntersectionObserver driven)
   ============================================ */
.animate-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.animate-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.animate-in:nth-child(2) {
  transition-delay: 80ms;
}

.animate-in:nth-child(3) {
  transition-delay: 160ms;
}

.animate-in:nth-child(4) {
  transition-delay: 240ms;
}

.animate-in:nth-child(5) {
  transition-delay: 320ms;
}

.animate-in:nth-child(6) {
  transition-delay: 400ms;
}

/* ============================================
   Responsive — Tablet (640px+)
   ============================================ */
@media (min-width: 640px) {

  .soluzione__pillars {
    grid-template-columns: repeat(3, 1fr);
  }

  .case-study__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-form {
    grid-template-columns: repeat(2, 1fr);
  }

  .form-group--full {
    grid-column: 1 / -1;
  }

  .contatti__inner {
    grid-template-columns: 1.5fr 1fr;
    align-items: start;
  }
}

/* ============================================
   Responsive — Desktop (1024px+)
   ============================================ */
@media (min-width: 1024px) {
  .hamburger {
    display: none;
  }



  .case-study__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .processo__steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2xl);
  }

  .processo__steps::before {
    display: none;
  }
}

/* Show sticky CTA only on mobile, hide on desktop */
@media (max-width: 1023px) {
  .sticky-cta {
    display: block;
  }

  /* Extra bottom padding for sticky CTA */
  .footer {
    padding-bottom: calc(var(--space-xl) + 72px);
  }
}

/* ============================================
   Utility: reduced motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .animate-in {
    opacity: 1;
    transform: none;
  }
}

/* Honeypot field - anti-bot */
.hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
  visibility: hidden;
}

/* ============================================
   Footer Enhanced
   ============================================ */
.footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.footer__brand .logo {
  margin-bottom: var(--space-lg);
}

.footer__brand .brand-logo {
  height: 40px;
  filter: invert(1) brightness(1);
  mix-blend-mode: screen;
  opacity: 0.8;
  transition: opacity 0.3s;
}

.footer__brand .brand-logo:hover {
  opacity: 1;
  filter: invert(1) brightness(1.2) drop-shadow(0 0 5px var(--color-primary));
}

@media (max-width: 768px) {
  .brand-logo {
    height: 38px;
  }
}

.footer__description {
  max-width: 300px;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.footer__title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

.footer__links {
  list-style: none;
  padding: 0;
}

.footer__links li {
  margin-bottom: var(--space-sm);
}

.footer__links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--transition-base);
}

.footer__links a:hover {
  color: var(--color-primary);
}

.footer__bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer__description {
    max-width: none;
  }
}

/* ============================================
   Case Study Hero Section
   ============================================ */
.case-study-hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  background-image: url('assets/case-studies/case-study-googleads.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  overflow: hidden;
  text-align: center;
  color: var(--color-text);
  padding: var(--space-4xl) 0;
}

.case-study-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10, 11, 14, 0.9), rgba(10, 11, 14, 0.7), rgba(10, 11, 14, 0.9));
  z-index: 1;
}

.case-study-hero .container {
  position: relative;
  z-index: 2;
}

.case-study-hero__content {
  max-width: 900px;
  margin: 0 auto var(--space-3xl);
}

.case-study-hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.1;
  margin-bottom: var(--space-xl);
  font-weight: 800;
  background: linear-gradient(135deg, #ffffff 0%, rgba(255, 255, 255, 0.7) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.case-study-hero__text {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.case-study-kpis {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
}

.kpi-card {
  padding: var(--space-xl);
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.kpi-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
}

.kpi-card__number {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  display: block;
}

.kpi-card__label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

@media (max-width: 1024px) {
  .case-study-kpis {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .case-study-kpis {
    grid-template-columns: 1fr;
  }

  .case-study-hero {
    background-attachment: scroll;
    padding: var(--space-2xl) 0;
  }
}

/* ============================================
   Case Studies Grid & Cards
   ============================================ */
.case-studies-grid {
  padding: var(--space-4xl) 0;
  /* Distinct spacing color */
  background: linear-gradient(to bottom, var(--color-bg-elevated), var(--color-bg));
  position: relative;
  border-top: 1px solid var(--color-border);
}

.cs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.cs-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.cs-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.cs-card__image-wrapper {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: #111;
}

.cs-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.cs-card:hover .cs-card__img {
  transform: scale(1.05);
}

.cs-card__hover-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 212, 255, 0.9);
  /* Primary color with transparency */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 2;
}

.cs-card:hover .cs-card__hover-overlay {
  opacity: 1;
}

.cs-card__kpi {
  text-align: center;
  color: #000;
  /* Contrast on primary color */
}

.kpi-val {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1;
}

.kpi-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.8;
}

.cs-card__content {
  padding: var(--space-xl);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.cs-card__sector {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.1em;
}

.cs-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.cs-card__description {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.cs-card__link {
  margin-top: auto;
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
  transition: opacity 0.3s;
}

.cs-card__link:hover {
  text-decoration: underline;
}

/* Placeholder card styles */
.cs-card--placeholder {
  opacity: 0.6;
}

.placeholder-img {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background: repeating-linear-gradient(45deg,
      transparent,
      transparent 10px,
      rgba(255, 255, 255, 0.02) 10px,
      rgba(255, 255, 255, 0.02) 20px);
}

@media (max-width: 1024px) {
  .cs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .cs-grid {
    grid-template-columns: 1fr;
  }
}