/* ==========================================================================
   Interactive Media — Landing Page
   Design system + component styles. Mobile-first.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS CUSTOM PROPERTIES
   -------------------------------------------------------------------------- */
:root {
  --color-bg-dark:        #0A1628;
  --color-bg-deep:        #020A18;
  --color-bg-white:       #FFFFFF;
  --color-bg-gray:        #F7F8FA;
  --color-text-primary:   #0A1628;
  --color-text-inverse:   #FFFFFF;
  --color-text-muted:     #5B6B7E;
  --color-text-muted-dark:#8FA0B4;
  --color-accent:         #00A6FB;
  --color-accent-hover:   #0086D1;
  --color-border:         #E5E9EF;
  --color-border-dark:    #1A2B42;
  --color-success:        #10B981;
  --color-error:          #EF4444;

  --radius-sm:   4px;
  --radius-md:   6px;
  --radius-lg:   8px;
  --radius-xl:   12px;

  --shadow-card:    0 1px 3px rgba(10,22,40,0.06), 0 4px 12px rgba(10,22,40,0.04);
  --shadow-card-hover: 0 8px 24px rgba(10,22,40,0.10), 0 2px 6px rgba(10,22,40,0.06);
  --shadow-form:    0 2px 8px rgba(10,22,40,0.08);

  --transition:    200ms cubic-bezier(0.4,0,0.2,1);
  --transition-md: 300ms cubic-bezier(0.4,0,0.2,1);

  --max-width:     1200px;
  --gutter:        1.5rem;
}

/* --------------------------------------------------------------------------
   2. RESET & BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* Garantisce che [hidden] non venga mai sovrascritto da regole display esplicite */
[hidden] { display: none !important; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text-primary);
  background: var(--color-bg-white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

html { overflow-x: hidden; }

img, svg { display: block; max-width: 100%; }
a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-hover); }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }

/* --------------------------------------------------------------------------
   3. TYPOGRAPHY SCALE
   -------------------------------------------------------------------------- */
h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.05;
  font-weight: 600;
  letter-spacing: -0.02em;
}
h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  line-height: 1.15;
  font-weight: 600;
  letter-spacing: -0.01em;
}
h3 {
  font-size: 1.25rem;
  line-height: 1.25;
  font-weight: 600;
}
p { font-size: 1rem; line-height: 1.65; }

.eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}
.eyebrow-accent { color: var(--color-accent); }

/* --------------------------------------------------------------------------
   4. LAYOUT UTILITIES
   -------------------------------------------------------------------------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.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;
}

.section-heading.centered { text-align: center; margin-bottom: 3rem; }

/* --------------------------------------------------------------------------
   5. SKIP LINK
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  background: var(--color-accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: top var(--transition);
}
.skip-link:focus { top: 1rem; }

/* --------------------------------------------------------------------------
   6. COOKIE BANNER
   -------------------------------------------------------------------------- */
.cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  max-width: 520px;
  z-index: 1000;
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  box-shadow: 0 16px 40px rgba(2,10,24,0.5);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: opacity var(--transition-md), transform var(--transition-md);
}
.cookie-banner.is-hidden {
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
}
.cookie-banner p { font-size: 0.875rem; color: var(--color-text-muted-dark); line-height: 1.5; }
.cookie-banner a { color: var(--color-accent); }
.cookie-actions { display: flex; gap: 0.75rem; }
.btn-cookie-primary, .btn-cookie-secondary {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: all var(--transition);
}
.btn-cookie-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-cookie-primary:hover { background: var(--color-accent-hover); }
.btn-cookie-secondary {
  background: transparent;
  border-color: var(--color-border-dark);
  color: var(--color-text-muted-dark);
}
.btn-cookie-secondary:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* --------------------------------------------------------------------------
   7. BUTTONS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(0,166,251,0.3);
}
.btn-primary:focus-visible {
  outline: 3px solid rgba(0,166,251,0.4);
  outline-offset: 2px;
}
.btn-lg { padding: 1rem 2rem; font-size: 1.0625rem; }
.btn-full { width: 100%; }

.btn-text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--color-accent);
  font-weight: 500;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: gap var(--transition), color var(--transition);
}
.btn-text-link:hover { color: var(--color-accent-hover); gap: 0.5rem; }

/* --------------------------------------------------------------------------
   8. HEADER / NAVIGATION
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--transition-md), border-color var(--transition-md), box-shadow var(--transition-md);
}
.site-header.is-scrolled {
  background: rgba(255,255,255,0.97);
  border-bottom-color: var(--color-border);
  box-shadow: 0 2px 12px rgba(10,22,40,0.06);
  backdrop-filter: blur(8px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.nav-logo img { height: 36px; width: auto; }
.logo-img-neg { display: block; }
.logo-img-pos { display: none; }
.site-header.is-scrolled .logo-img-neg { display: none; }
.site-header.is-scrolled .logo-img-pos { display: block; }
.nav-logo-text {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-inverse);
  letter-spacing: -0.01em;
}
.site-header.is-scrolled .nav-logo-text { color: var(--color-text-primary); }

.nav-menu {
  display: none;
  gap: 0.25rem;
  margin-left: auto;
}
.nav-link {
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.08); }
.site-header.is-scrolled .nav-link { color: var(--color-text-muted); }
.site-header.is-scrolled .nav-link:hover { color: var(--color-text-primary); background: var(--color-bg-gray); }

.nav-cta {
  flex-shrink: 0;
  padding: 0.625rem 1.25rem;
  font-size: 0.9375rem;
}

.nav-mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  background: none;
  border: none;
  padding: 0;
  margin-left: auto;
}
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 22px;
}
.hamburger span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--transition-md);
}
.site-header.is-scrolled .hamburger span { background: var(--color-text-primary); }
.nav-mobile-toggle[aria-expanded="true"] .hamburger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-mobile-toggle[aria-expanded="true"] .hamburger span:nth-child(2) { opacity: 0; }
.nav-mobile-toggle[aria-expanded="true"] .hamburger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu open state */
.nav-menu.is-open {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 72px; left: 0; right: 0;
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-border-dark);
  padding: 1rem 1.5rem 1.5rem;
  gap: 0.25rem;
  box-shadow: 0 16px 32px rgba(2,10,24,0.5);
}
.nav-menu.is-open .nav-link { color: rgba(255,255,255,0.8); padding: 0.75rem 0.875rem; }
.nav-menu.is-open .nav-link:hover { color: #fff; background: rgba(255,255,255,0.06); }

@media (min-width: 768px) {
  .nav-menu { display: flex; }
}

/* Mobile: niente menu hamburger, header compatto con logo + CTA sempre visibili */
@media (max-width: 767px) {
  .nav-inner { gap: 0.625rem; }
  .nav-logo img { height: 26px; }
  .nav-cta { padding: 0.5rem 0.9rem; font-size: 0.8125rem; }
}

/* --------------------------------------------------------------------------
   9. HERO SECTION
   -------------------------------------------------------------------------- */
.section-hero {
  position: relative;
  background: var(--color-bg-dark);
  padding: 140px 0 100px;
  overflow: hidden;
  min-height: 100svh;
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.hero-waves-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* Wave animations */
.wave { transform-origin: center; }
.w1 { animation: wavePulse 12s ease-in-out infinite; }
.w2 { animation: wavePulse 9s ease-in-out infinite reverse; animation-delay: -3s; }
.w3 { animation: wavePulse 15s ease-in-out infinite; animation-delay: -6s; }
.w4 { animation: wavePulse 10s ease-in-out infinite reverse; animation-delay: -1s; }
.w5 { animation: wavePulse 13s ease-in-out infinite; animation-delay: -4s; }

@keyframes wavePulse {
  0%, 100% { transform: translateY(0) scaleX(1); }
  50% { transform: translateY(-14px) scaleX(1.01); }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

/* Hero text */
.hero-text h1 {
  color: var(--color-text-inverse);
  margin-bottom: 1.5rem;
}
.hero-sub {
  font-size: 1.125rem;
  line-height: 1.6;
  color: rgba(255,255,255,0.75);
  max-width: 52ch;
  margin-bottom: 2.5rem;
}
.hero-ctas {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 3rem;
}
.hero-ctas .btn-text-link { color: rgba(255,255,255,0.7); }
.hero-ctas .btn-text-link:hover { color: #fff; }

.hero-trust { border-top: 1px solid var(--color-border-dark); padding-top: 1.75rem; }
.hero-trust-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted-dark);
  margin-bottom: 0.875rem;
}
.hero-trust-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.logo-pill {
  padding: 0.375rem 0.75rem;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.01em;
}

/* Hero visual: chat demo */
.hero-visual { width: 100%; max-width: 480px; margin: 0 auto; }

.chat-demo {
  background: #0F1E35;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 32px 64px rgba(2,10,24,0.6), 0 0 0 1px rgba(0,166,251,0.08);
}
.chat-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: #0C1728;
  border-bottom: 1px solid var(--color-border-dark);
}
.chat-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.chat-info { flex: 1; }
.chat-name {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.2;
}
.chat-status {
  font-size: 0.75rem;
  color: var(--color-success);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  animation: statusPulse 2s ease-in-out infinite;
}
@keyframes statusPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.chat-wave-indicator {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 20px;
}
.chat-wave-indicator span {
  width: 3px;
  background: rgba(0,166,251,0.4);
  border-radius: 2px;
  animation: waveBar 1.2s ease-in-out infinite;
}
.chat-wave-indicator span:nth-child(1) { height: 8px; animation-delay: 0s; }
.chat-wave-indicator span:nth-child(2) { height: 14px; animation-delay: 0.2s; }
.chat-wave-indicator span:nth-child(3) { height: 18px; animation-delay: 0.4s; }
.chat-wave-indicator span:nth-child(4) { height: 12px; animation-delay: 0.6s; }
.chat-wave-indicator span:nth-child(5) { height: 6px; animation-delay: 0.8s; }
@keyframes waveBar {
  0%, 100% { transform: scaleY(0.4); opacity: 0.4; }
  50% { transform: scaleY(1); opacity: 1; }
}

.chat-messages {
  padding: 1.25rem;
  height: 252px; /* fixed: evita layout shift durante il ciclo di animazione */
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  justify-content: flex-end; /* i messaggi crescono dal basso verso l'alto */
  gap: 0.875rem;
  scrollbar-width: none;
}
.chat-messages::-webkit-scrollbar { display: none; }

.chat-message {
  display: flex;
  animation: msgFadeIn 0.35s ease-out both;
}
.chat-message.user { justify-content: flex-end; }
.chat-message.bot { justify-content: flex-start; }

@keyframes msgFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.msg-bubble {
  max-width: 78%;
  padding: 0.625rem 0.875rem;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  line-height: 1.5;
}
.chat-message.user .msg-bubble {
  background: var(--color-accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.chat-message.bot .msg-bubble {
  background: #162234;
  color: rgba(255,255,255,0.85);
  border-bottom-left-radius: 4px;
  border: 1px solid var(--color-border-dark);
}

.chat-typing {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0.75rem 0.875rem;
  background: #162234;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-lg);
  border-bottom-left-radius: 4px;
  width: fit-content;
}
.typing-dot {
  width: 6px; height: 6px;
  background: rgba(255,255,255,0.4);
  border-radius: 50%;
  animation: typingPulse 1.2s ease-in-out infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingPulse {
  0%, 100% { transform: scale(0.6); opacity: 0.4; }
  50% { transform: scale(1); opacity: 1; }
}

.chat-footer {
  padding: 0.875rem 1.25rem;
  border-top: 1px solid var(--color-border-dark);
  background: #0C1728;
}
.voice-input-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: #162234;
  border: 1px solid rgba(0,166,251,0.2);
  border-radius: 100px;
  padding: 0.5rem 1rem;
}
.voice-bars-demo {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 16px;
}
.voice-bars-demo span {
  width: 2px;
  background: var(--color-accent);
  border-radius: 2px;
  animation: voiceBar 0.8s ease-in-out infinite;
}
.voice-bars-demo span:nth-child(1) { height: 4px; animation-delay: 0s; }
.voice-bars-demo span:nth-child(2) { height: 10px; animation-delay: 0.1s; }
.voice-bars-demo span:nth-child(3) { height: 14px; animation-delay: 0.2s; }
.voice-bars-demo span:nth-child(4) { height: 8px; animation-delay: 0.3s; }
.voice-bars-demo span:nth-child(5) { height: 12px; animation-delay: 0.4s; }
.voice-bars-demo span:nth-child(6) { height: 6px; animation-delay: 0.5s; }
.voice-bars-demo span:nth-child(7) { height: 4px; animation-delay: 0.6s; }
@keyframes voiceBar {
  0%, 100% { transform: scaleY(0.5); }
  50% { transform: scaleY(1); }
}
.voice-label { font-size: 0.8125rem; color: rgba(255,255,255,0.5); flex: 1; }

/* --------------------------------------------------------------------------
   10. STATS SECTION
   -------------------------------------------------------------------------- */
.section-stats {
  background: var(--color-bg-white);
  padding: 4rem 0;
  border-bottom: 1px solid var(--color-border);
}
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 1.5rem;
}
.stat-item {
  text-align: center;
  padding: 1.5rem;
}
.stat-item .stat-number,
.stat-item .stat-prefix-display,
.stat-item .stat-suffix-display {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  line-height: 1;
}
.stat-number { display: inline; }
.stat-prefix-display { display: inline; }
.stat-suffix-display { display: inline; }
.stat-label {
  display: block;
  margin-top: 0.625rem;
  font-size: 0.875rem;
  line-height: 1.4;
  color: var(--color-text-muted);
  max-width: 18ch;
  margin-left: auto;
  margin-right: auto;
}

/* --------------------------------------------------------------------------
   11. PROBLEM SECTION
   -------------------------------------------------------------------------- */
.section-problem {
  background: var(--color-bg-white);
  padding: 6rem 0;
}
.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}
.problem-heading-col h2 {
  color: var(--color-text-primary);
}
.problem-body-col p {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}
.problem-body-col p strong { color: var(--color-text-primary); }
.problem-body-col p:last-of-type { margin-bottom: 2rem; }
.problem-cta { font-size: 1rem; }

/* --------------------------------------------------------------------------
   12. SOLUTIONS SECTION
   -------------------------------------------------------------------------- */
.section-solutions {
  background: var(--color-bg-gray);
  padding: 6rem 0;
}
.solutions-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.solution-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-md), box-shadow var(--transition-md), border-color var(--transition-md);
  display: flex;
  flex-direction: column;
  gap: 0;
}
.solution-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-accent);
}
.card-eyebrow {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}
.card-icon {
  color: var(--color-accent);
  margin-bottom: 1rem;
}
.card-title {
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: 0.875rem;
  color: var(--color-text-primary);
}
.card-description {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1rem;
}
.card-audience {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}
.card-audience strong { color: var(--color-text-primary); }
.card-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-accent);
  transition: gap var(--transition), color var(--transition);
  align-self: flex-start;
  margin-top: auto;
}
.card-link:hover { color: var(--color-accent-hover); }
.solutions-cta { text-align: center; }

/* --------------------------------------------------------------------------
   13. RESULTS SECTION
   -------------------------------------------------------------------------- */
.section-results {
  background: var(--color-bg-dark);
  padding: 6rem 0;
}
.section-results .section-heading { color: var(--color-text-inverse); }
.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.result-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: background var(--transition-md), border-color var(--transition-md);
}
.result-card:hover {
  background: rgba(0,166,251,0.04);
  border-color: rgba(0,166,251,0.25);
}
.result-number {
  font-size: clamp(2.25rem, 4vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.75rem;
  white-space: nowrap;         /* impedisce il wrapping durante il counter */
  font-variant-numeric: tabular-nums; /* cifre a larghezza fissa */
}
.result-prefix, .result-unit { display: inline; }
.counter { display: inline; }
.result-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-inverse);
  margin-bottom: 0.625rem;
}
.result-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted-dark);
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   13b. ARCHITECTURE SECTION
   -------------------------------------------------------------------------- */
.section-architecture {
  background: var(--color-bg-white);
  padding: 6rem 0;
  overflow: hidden;
}

.eyebrow-centered { text-align: center; display: block; margin-bottom: 0.75rem; }

.arch-intro {
  max-width: 62ch;
  margin: 0 auto 3.5rem;
  text-align: center;
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ── Diagram wrapper ── */
.arch-diagram {
  display: flex;
  align-items: stretch;
  gap: 0;
}

/* ── Shared layer base ── */
.arch-layer {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.arch-layer-badge {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0 0 0.5rem 0;
  text-align: center;
}
.arch-layer-badge-inv { color: var(--color-text-muted-dark); }

/* ── INPUTS ── */
.arch-layer-inputs { flex: 1; min-width: 0; }
.arch-input-nodes {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  height: 100%;
}
.arch-input-node {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  flex: 1;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.arch-input-node:hover {
  border-color: rgba(0,166,251,0.4);
  box-shadow: 0 2px 12px rgba(0,166,251,0.06);
}
.ain-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  background: var(--color-bg-gray);
  color: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}
.ain-body { flex: 1; min-width: 0; }
.ain-title {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.4rem;
}
.ain-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}
.ain-tags span {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.15rem 0.45rem;
  background: var(--color-bg-gray);
  border-radius: 100px;
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ── CONNECTOR ── */
.arch-connector {
  flex-shrink: 0;
  width: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 0;
  /* account for badge height */
  padding-top: 2.75rem;
}
.conn-tracks {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 100%;
  height: 100%;
  gap: 0;
}
.conn-track {
  position: relative;
  height: 2px;
  background: rgba(0,166,251,0.12);
  border-radius: 1px;
  overflow: visible;
}
.conn-dot {
  position: absolute;
  top: 50%;
  left: -5px;
  width: 7px; height: 7px;
  margin-top: -3.5px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 6px rgba(0,166,251,0.7);
  opacity: 0;
  animation: connDotFlow var(--dur, 2s) ease-in-out var(--d, 0s) infinite;
}
@keyframes connDotFlow {
  0%   { left: -5px;          opacity: 0; }
  6%   { opacity: 1; }
  92%  { opacity: 0.85; }
  100% { left: calc(100% + 5px); opacity: 0; }
}

/* ── PLATFORM ── */
.arch-layer-platform {
  flex: 1.1;
  min-width: 0;
  align-items: center;
}
.arch-platform-wrap {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
}
/* Pulsing rings behind platform */
.arch-platform-pulse,
.arch-platform-pulse-2 {
  position: absolute;
  inset: -16px;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0,166,251,0.18);
  pointer-events: none;
  animation: platformRing 3s ease-in-out infinite;
}
.arch-platform-pulse-2 {
  inset: -28px;
  border-color: rgba(0,166,251,0.08);
  animation-delay: 1.5s;
}
@keyframes platformRing {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.01); }
}

.arch-platform-inner {
  position: relative;
  width: 100%;
  background: var(--color-bg-dark);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-dark);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0;
  box-shadow: 0 8px 32px rgba(2,10,24,0.25), 0 0 0 1px rgba(0,166,251,0.08);
}
.arch-pnode {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.875rem 0.625rem;
}
.arch-pnode-sep {
  height: 1px;
  background: var(--color-border-dark);
  margin: 0 0.25rem;
}
.arch-pnode-icon {
  width: 38px; height: 38px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--color-border-dark);
  color: rgba(255,255,255,0.6);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.arch-pnode-icon-mind {
  background: rgba(0,166,251,0.12);
  border-color: rgba(0,166,251,0.25);
  color: var(--color-accent);
  animation: mindIconPulse 2.5s ease-in-out infinite;
}
@keyframes mindIconPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,166,251,0); }
  50%       { box-shadow: 0 0 0 5px rgba(0,166,251,0.12); }
}
.arch-pnode-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.pnode-product {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.pnode-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  white-space: nowrap;
}
.arch-pnode-mind .arch-pnode-text .pnode-name { color: #fff; }

/* ── OUTPUTS ── */
.arch-layer-outputs { flex: 1; min-width: 0; }
.arch-output-nodes {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  height: 100%;
}
.arch-output-node {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  flex: 1;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.arch-output-node:hover {
  border-color: rgba(0,166,251,0.4);
  box-shadow: 0 2px 12px rgba(0,166,251,0.06);
}
.aon-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  background: rgba(0,166,251,0.06);
  border: 1px solid rgba(0,166,251,0.15);
  color: var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.aon-body {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.aon-product {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.aon-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

/* ── MOBILE: hide connectors, stack layers ── */
@media (max-width: 767px) {
  .arch-diagram {
    flex-direction: column;
    gap: 1rem;
  }
  .arch-connector { display: none; }
  .arch-layer-inputs,
  .arch-layer-platform,
  .arch-layer-outputs { width: 100%; }
  .arch-layer-badge { text-align: left; }
  .arch-input-nodes,
  .arch-output-nodes { height: auto; }
  /* Show a simple vertical arrow between layers on mobile */
  .arch-layer-inputs::after,
  .arch-layer-platform::after {
    content: '↓';
    display: block;
    text-align: center;
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-top: 0.75rem;
    animation: arrowBounce 1.5s ease-in-out infinite;
  }
  @keyframes arrowBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(4px); }
  }
  .arch-platform-pulse,
  .arch-platform-pulse-2 { display: none; }
  .pnode-name { white-space: normal; }
}

/* Responsive: at medium screen reduce connector width */
@media (min-width: 768px) and (max-width: 1023px) {
  .arch-connector { width: 48px; }
  .ain-tags span { display: none; }
  .ain-tags span:nth-child(-n+2) { display: inline; }
}

/* --------------------------------------------------------------------------
   14. CASE STUDY SECTION
   -------------------------------------------------------------------------- */
.section-casestudy {
  background: var(--color-bg-white);
  padding: 6rem 0;
}
.casestudy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: start;
}
.casestudy-content h2 { margin-bottom: 2rem; color: var(--color-text-primary); }

.testimonial-quote {
  position: relative;
  padding: 1.5rem 1.75rem;
  background: var(--color-bg-gray);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  margin-bottom: 2rem;
}
.testimonial-quote p {
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text-primary);
  font-style: italic;
  margin-bottom: 1rem;
}
.testimonial-quote footer { font-style: normal; }
.testimonial-quote cite {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-style: normal;
}
.testimonial-quote cite strong { color: var(--color-text-primary); }

.result-bullets {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}
.result-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.result-bullet-number {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-accent);
  min-width: 3.5rem;
  line-height: 1.3;
}
.result-bullets li span:last-child {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  padding-top: 0.125rem;
}

.casestudy-visual-inner {
  background: var(--color-bg-dark);
  border-radius: var(--radius-xl);
  padding: 2rem;
  border: 1px solid var(--color-border-dark);
}
.cs-header {
  text-align: center;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border-dark);
}
.cs-logo-text {
  display: block;
  font-size: 1.375rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.25rem;
}
.cs-logo-sub {
  font-size: 0.8125rem;
  color: var(--color-text-muted-dark);
}
.cs-metrics-row {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
}
.cs-metric-item { text-align: center; }
.cs-metric-ring {
  position: relative;
  width: 80px; height: 80px;
  margin: 0 auto 0.625rem;
}
.cs-metric-ring svg { width: 100%; height: 100%; }
.cs-ring-value {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
}
.cs-ring-label {
  font-size: 0.75rem;
  color: var(--color-text-muted-dark);
  line-height: 1.3;
  text-align: center;
}
.cs-badge {
  background: rgba(0,166,251,0.08);
  border: 1px solid rgba(0,166,251,0.2);
  border-radius: var(--radius-lg);
  padding: 1rem;
  text-align: center;
}
.cs-badge-value {
  display: block;
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}
.cs-badge-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted-dark);
}

/* --------------------------------------------------------------------------
   15. LOGO WALL
   -------------------------------------------------------------------------- */
.section-logos {
  background: var(--color-bg-gray);
  padding: 5.5rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.logos-heading {
  font-size: clamp(1.625rem, 3.6vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.18;
  text-transform: none;
  color: var(--color-text-primary);
  text-align: center;
  max-width: 780px;
  margin: 0 auto 1rem;
}
.logos-subheading {
  text-align: center;
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 620px;
  margin: 0 auto 3rem;
}
.org-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(228px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}
.org-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.5rem 1.375rem;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.org-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), rgba(0,166,251,0));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-md);
}
.org-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(0,166,251,0.45);
}
.org-card:hover::before { transform: scaleX(1); }
.org-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: var(--radius-lg);
  background: rgba(0,166,251,0.10);
  color: var(--color-accent);
  margin-bottom: 1.125rem;
  transition: background var(--transition), transform var(--transition);
}
.org-card:hover .org-card-icon { transform: scale(1.06); }
.org-card-tag {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
}
.org-card-title {
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text-primary);
  margin-bottom: 0.25rem;
}
.org-card-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.45;
}
/* Variante partner */
.org-card-partner .org-card-icon {
  background: rgba(10,22,40,0.055);
  color: var(--color-text-primary);
}
.org-card-partner .org-card-tag { color: var(--color-accent); }
.logos-legend {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
}
.legend-clients::before { content: '●'; color: var(--color-accent); margin-right: 0.375rem; }
.legend-partners::before { content: '●'; color: var(--color-text-primary); margin-right: 0.375rem; opacity: 0.4; }

/* --------------------------------------------------------------------------
   16. FAQ ACCORDION
   -------------------------------------------------------------------------- */
.section-faq {
  background: var(--color-bg-gray);
  padding: 6rem 0;
}
.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-item:first-child { border-top: 1px solid var(--color-border); }

.faq-question {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1.375rem 0;
  background: none;
  border: none;
  text-align: left;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-primary);
  transition: color var(--transition);
  line-height: 1.4;
}
.faq-question:hover { color: var(--color-accent); }
.faq-question:focus-visible {
  outline: 3px solid rgba(0,166,251,0.35);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.faq-icon {
  flex-shrink: 0;
  margin-top: 1px;
}
.faq-icon svg {
  transition: transform var(--transition-md);
  color: var(--color-text-muted);
}
.faq-item.is-open .faq-icon svg { transform: rotate(180deg); color: var(--color-accent); }
.faq-item.is-open .faq-question { color: var(--color-accent); }

/* CSS grid trick for smooth accordion animation */
.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-md);
}
.faq-item.is-open .faq-answer { grid-template-rows: 1fr; }
.faq-answer-body {
  overflow: hidden;
}
.faq-answer-body p {
  padding-bottom: 1.375rem;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   17. FORM SECTION
   -------------------------------------------------------------------------- */
.section-form {
  background: var(--color-bg-dark);
  padding: 6rem 0;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: start;
}

/* Pitch column */
.form-pitch h2 { color: var(--color-text-inverse); margin-bottom: 1rem; }
.form-pitch-text {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.65;
  margin-bottom: 2rem;
}
.demo-benefits {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  margin-bottom: 2rem;
}
.demo-benefits li {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
}
.benefit-check {
  color: var(--color-success);
  font-weight: 600;
  flex-shrink: 0;
  margin-top: 0.125rem;
}
.demo-benefits li span:last-child {
  color: rgba(255,255,255,0.8);
  font-size: 0.9375rem;
  line-height: 1.5;
}
.form-microcopy {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.4);
  line-height: 1.5;
}

/* Form wrapper */
.form-wrapper {
  background: var(--color-bg-white);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: 0 24px 48px rgba(2,10,24,0.3);
}

/* Success state */
.form-success {
  text-align: center;
  padding: 2rem 1rem;
}
.success-icon {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}
.form-success h3 {
  font-size: 1.5rem;
  color: var(--color-text-primary);
  margin-bottom: 0.75rem;
}
.success-intro {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}
/* Numero di telefono in evidenza */
.success-phone {
  display: block;
  font-size: clamp(1.75rem, 6vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-accent);
  text-decoration: none;
  margin: 0 auto 1.5rem;
  padding: 0.875rem 1.5rem;
  border: 2px solid rgba(0,166,251,0.25);
  border-radius: var(--radius-lg);
  background: rgba(0,166,251,0.05);
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  width: fit-content;
}
.success-phone:hover {
  background: rgba(0,166,251,0.1);
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
}
.success-hint {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}
.success-case {
  font-size: 0.875rem;
  color: #B0BDC9;
  border-top: 1px solid var(--color-border);
  padding-top: 1.25rem;
  margin-top: 0.25rem;
}

/* Phone CTA banner (landing senza form) */
.phone-cta {
  max-width: 660px;
  margin: 0 auto;
  text-align: center;
}
.phone-cta h2 { color: var(--color-text-inverse); margin-bottom: 1rem; }
.phone-cta .form-pitch-text {
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}
.phone-cta .success-phone {
  margin-left: auto;
  margin-right: auto;
}
.phone-cta-actions {
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-bottom: 2.75rem;
}
.phone-cta-actions .btn {
  flex: 1 1 220px;
  max-width: 280px;
}
.btn-outline-light {
  background: transparent;
  color: rgba(255,255,255,0.85);
  border-color: rgba(255,255,255,0.28);
}
.btn-outline-light:hover {
  color: #fff;
  border-color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.06);
  transform: translateY(-1px);
}
/* Desktop: il numero non chiama (non si telefona dal PC) e si nasconde "Prova INTERA";
   su telefono il numero resta cliccabile e il tasto chiamata visibile. */
@media (min-width: 768px) {
  .phone-cta .success-phone {
    pointer-events: none;
    cursor: default;
  }
  .phone-cta-call { display: none; }
}
.phone-cta .demo-benefits {
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  text-align: left;
}
.phone-cta .form-microcopy { max-width: 560px; margin: 0 auto; }

/* Spazio tra banner numero e form facoltativo */
.phone-cta { margin-bottom: 3.5rem; }
.form-success a { color: var(--color-accent); font-weight: 500; }

/* Form fields */
.demo-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-row { display: grid; gap: 1.25rem; }
.form-row-2 { grid-template-columns: 1fr 1fr; }

.form-field { display: flex; flex-direction: column; gap: 0.375rem; }
.form-field label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
}
.required-mark { color: var(--color-error); font-weight: 400; }
.label-optional { font-size: 0.75rem; font-weight: 400; color: var(--color-text-muted); }

.form-field input,
.form-field select,
.form-field textarea {
  padding: 0.875rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--color-text-primary);
  background: var(--color-bg-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
}
.form-field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235B6B7E' 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;
  cursor: pointer;
}
.form-field textarea { resize: vertical; min-height: 90px; }
.form-field input::placeholder,
.form-field textarea::placeholder { color: #B0BDC9; }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0,166,251,0.15);
}
.form-field input.has-error,
.form-field select.has-error,
.form-field textarea.has-error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239,68,68,0.12);
}

.textarea-meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
  min-height: 1.25rem;
}
.char-counter { font-size: 0.75rem; color: var(--color-text-muted); flex-shrink: 0; }

.field-error {
  font-size: 0.8125rem;
  color: var(--color-error);
  min-height: 1rem;
  display: block;
}

/* Checkbox */
.form-field-checkbox .form-field { flex-direction: row; gap: 0; }
.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  cursor: pointer;
}
.checkbox-label input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0; height: 0;
}
.checkbox-custom {
  width: 18px; height: 18px;
  flex-shrink: 0;
  border: 1.5px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-bg-white);
  transition: all var(--transition);
  margin-top: 1px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.checkbox-label input:checked + .checkbox-custom {
  background: var(--color-accent);
  border-color: var(--color-accent);
}
.checkbox-label input:checked + .checkbox-custom::after {
  content: '';
  display: block;
  width: 9px; height: 6px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg) translate(1px, -1px);
}
.checkbox-label input:focus-visible + .checkbox-custom {
  outline: 3px solid rgba(0,166,251,0.35);
  outline-offset: 1px;
}
.checkbox-text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  flex: 1;
}
.checkbox-text a { color: var(--color-accent); }

/* Submit button */
#formSubmit { margin-top: 0.5rem; position: relative; }
#formSubmit:disabled { opacity: 0.7; cursor: not-allowed; transform: none; }
.btn-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
}
.spinner {
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.form-disclaimer {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  text-align: center;
  margin-top: 0.5rem;
}

/* --------------------------------------------------------------------------
   18. FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-bg-deep);
  padding: 4rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-brand { display: flex; flex-direction: column; gap: 1rem; }
.footer-logo { display: inline-flex; }
.footer-logo img { height: 32px; width: auto; opacity: 0.85; }
.footer-logo-text {
  font-size: 1rem;
  font-weight: 600;
  color: rgba(255,255,255,0.7);
  display: flex;
  align-items: center;
}
.footer-tagline {
  font-size: 0.875rem;
  color: var(--color-text-muted-dark);
  line-height: 1.5;
}
.footer-social {
  display: flex;
  gap: 0.75rem;
}
.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.5);
  transition: all var(--transition);
}
.footer-social a:hover {
  background: rgba(0,166,251,0.15);
  color: var(--color-accent);
}

.footer-nav { display: flex; gap: 2rem; flex-wrap: wrap; }
.footer-nav-col { min-width: 120px; }
.footer-nav-heading {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 1rem;
}
.footer-nav ul, .offices-list { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-nav a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer-nav a:hover { color: rgba(255,255,255,0.9); }

.footer-offices .offices-list li {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
}
.footer-offices .offices-list strong { color: rgba(255,255,255,0.75); }

.footer-bottom p {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.3);
}
.footer-bottom .footer-legal {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.2);
  line-height: 1.6;
}
.footer-bottom .footer-legal a {
  color: rgba(255,255,255,0.3);
  text-decoration: none;
}
.footer-bottom .footer-legal a:hover { color: rgba(255,255,255,0.55); }

/* --------------------------------------------------------------------------
   19. SCROLL ANIMATIONS
   -------------------------------------------------------------------------- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s cubic-bezier(0.4,0,0.2,1), transform 0.55s cubic-bezier(0.4,0,0.2,1);
}
.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-delay-1 { transition-delay: 0.12s; }
.fade-delay-2 { transition-delay: 0.22s; }
.fade-delay-3 { transition-delay: 0.32s; }

/* Stagger children in grids */
.stats-grid .fade-up:nth-child(2) { transition-delay: 0.08s; }
.stats-grid .fade-up:nth-child(3) { transition-delay: 0.16s; }
.stats-grid .fade-up:nth-child(4) { transition-delay: 0.24s; }
.solutions-grid .fade-up:nth-child(2) { transition-delay: 0.12s; }
.solutions-grid .fade-up:nth-child(3) { transition-delay: 0.22s; }
.results-grid .fade-up:nth-child(2) { transition-delay: 0.10s; }
.results-grid .fade-up:nth-child(3) { transition-delay: 0.20s; }
.results-grid .fade-up:nth-child(4) { transition-delay: 0.30s; }

/* --------------------------------------------------------------------------
   20. RESPONSIVE
   -------------------------------------------------------------------------- */

/* xs: regole per schermi stretti (<640px) */
@media (max-width: 639px) {
  /* Result cards: font e padding ridotti per non uscire dal viewport */
  .result-card { padding: 1.25rem 1rem; }
  .result-number { font-size: clamp(1.75rem, 8vw, 2.25rem); }

  /* Stats: stessa cura per i numeri grandi */
  .stat-item { padding: 1rem; }
  .stat-item .stat-number,
  .stat-item .stat-prefix-display,
  .stat-item .stat-suffix-display {
    font-size: clamp(1.875rem, 8vw, 2.5rem);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
  }
  .stat-label { font-size: 0.8125rem; }
}

/* sm: 640px */
@media (min-width: 640px) {
  .form-row-2 { grid-template-columns: 1fr 1fr; }
}

/* md: 768px */
@media (min-width: 768px) {
  :root { --gutter: 2rem; }

  .section-hero { padding: 140px 0 120px; }
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
  .hero-visual { margin: 0; max-width: none; }

  .stats-grid { grid-template-columns: repeat(4, 1fr); gap: 0; }
  .stat-item { border-right: 1px solid var(--color-border); padding: 2rem; }
  .stat-item:last-child { border-right: none; }

  .problem-grid { grid-template-columns: 1fr 1fr; gap: 5rem; }
  .solutions-grid { grid-template-columns: repeat(3, 1fr); }
  .results-grid { grid-template-columns: repeat(2, 1fr); }

  .casestudy-grid { grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }

  .form-grid { grid-template-columns: 5fr 7fr; gap: 4rem; }
  .form-wrapper { padding: 2.5rem; }

  .footer-grid { grid-template-columns: 2fr 3fr 1fr; gap: 3rem; }
  .footer-offices { grid-column: 3; }
}

/* lg: 1024px */
@media (min-width: 1024px) {
  .section-hero { padding: 160px 0 140px; }
  .section-problem { padding: 8rem 0; }
  .section-solutions { padding: 8rem 0; }
  .section-results { padding: 8rem 0; }
  .section-casestudy { padding: 8rem 0; }
  .section-faq { padding: 8rem 0; }
  .section-form { padding: 8rem 0; }

  .form-grid { gap: 5rem; }
}

/* xl: 1280px */
@media (min-width: 1280px) {
  .hero-grid { gap: 6rem; }
}

/* --------------------------------------------------------------------------
   21. PRINT
   -------------------------------------------------------------------------- */
@media print {
  .site-header, .cookie-banner, .hero-bg, .section-form, .site-footer { display: none; }
  * { color: #000 !important; background: #fff !important; }
}