/* W1DS - Architetture di Luce
   Design system, layout and components. Mobile first. */

:root {
  --bg: #F7F9FC;
  --surface: #FFFFFF;
  --ice: #EAF4FA;
  --ink: #152238;
  --ink-2: #526176;
  --action: #2748D8;
  --action-dark: #1d38b0;
  --cyan: #57DDF4;
  --lavender: #BDAEFF;
  --pink: #F2BEDF;
  --mint: #B8F0DD;
  --border: #DCE5EF;

  --shell-max: 1360px;
  --gutter: clamp(20px, 4.4vw, 56px);
  --radius-lg: 30px;
  --radius-md: 18px;
  --radius-sm: 12px;

  --dur-press: 110ms;
  --dur-state: 230ms;
  --dur-open: 320ms;
  --dur-scene: 700ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Courier New", monospace;

  --header-h: 68px;
  --shadow-soft: 0 18px 40px -28px rgba(21, 34, 56, 0.35);
  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.9) inset, 0 24px 48px -34px rgba(21, 34, 56, 0.45);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 18px);
}

body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    radial-gradient(120% 70% at 8% -10%, #ffffff 0%, rgba(255, 255, 255, 0) 60%),
    radial-gradient(90% 60% at 100% 0%, rgba(234, 244, 250, 0.9) 0%, rgba(234, 244, 250, 0) 55%),
    radial-gradient(80% 50% at 50% 100%, rgba(189, 174, 255, 0.16) 0%, rgba(189, 174, 255, 0) 60%);
  background-attachment: scroll;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  padding-bottom: env(safe-area-inset-bottom);
}

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

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  text-wrap: balance;
}

p {
  margin: 0;
  max-width: 62ch;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

button {
  font: inherit;
  color: inherit;
}

::selection {
  background: rgba(87, 221, 244, 0.4);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--action);
  outline-offset: 3px;
  border-radius: 4px;
}

.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 200;
  padding: 12px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow-soft);
  transition: top var(--dur-state) var(--ease);
}

.skip-link:focus-visible {
  top: 12px;
}

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

.section {
  position: relative;
  padding-block: clamp(64px, 9vw, 132px);
  scroll-margin-top: calc(var(--header-h) + 12px);
}

.section + .section {
  border-top: 1px solid rgba(220, 229, 239, 0.7);
}

.section-head {
  max-width: 44ch;
  margin-bottom: clamp(36px, 5vw, 64px);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head--center p {
  margin-inline: auto;
}

.section-head h2 {
  font-size: clamp(1.875rem, 1.15rem + 2.5vw, 3.75rem);
  margin-bottom: 20px;
}

.section-lede {
  color: var(--ink-2);
  font-size: clamp(1rem, 0.96rem + 0.25vw, 1.1875rem);
}

.chapter {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.chapter-num {
  display: inline-grid;
  place-items: center;
  min-width: 26px;
  height: 22px;
  padding-inline: 6px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--action);
  font-size: 0.6875rem;
}

.disclaimer {
  margin-top: clamp(24px, 3vw, 36px);
  font-size: 0.875rem;
  color: var(--ink-2);
  max-width: 70ch;
}

.noscript-note {
  margin: 0;
  padding: 16px var(--gutter);
  background: var(--ice);
  color: var(--ink-2);
  font-size: 0.875rem;
  text-align: center;
}

/* Buttons */
.btn {
  --btn-bg: var(--surface);
  --btn-fg: var(--ink);
  --btn-border: var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 13px 24px;
  border-radius: 999px;
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: transform var(--dur-press) var(--ease), box-shadow var(--dur-state) var(--ease),
    background-color var(--dur-state) var(--ease), border-color var(--dur-state) var(--ease), color var(--dur-state) var(--ease);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset, 0 12px 24px -20px rgba(21, 34, 56, 0.6);
  -webkit-tap-highlight-color: transparent;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.9) inset, 0 18px 32px -22px rgba(21, 34, 56, 0.55);
}

.btn:active {
  transform: translateY(1px) scale(0.994);
}

.btn-primary {
  --btn-bg: linear-gradient(180deg, #3457e6 0%, var(--action) 100%);
  --btn-fg: #ffffff;
  --btn-border: rgba(29, 56, 176, 0.9);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.35) inset, 0 18px 34px -22px rgba(39, 72, 216, 0.85);
}

.btn-primary:hover {
  --btn-bg: linear-gradient(180deg, #4262ec 0%, var(--action-dark) 100%);
}

.btn-ghost {
  --btn-bg: rgba(255, 255, 255, 0.72);
  --btn-fg: var(--ink);
}

.btn-ghost:hover {
  --btn-bg: #ffffff;
  --btn-border: #c6d4e4;
}

.btn-sm {
  min-height: 42px;
  padding: 9px 18px;
  font-size: 0.875rem;
}

.link-strong {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  color: var(--action);
  font-family: var(--font-display);
  font-weight: 500;
  border-bottom: 1px solid rgba(39, 72, 216, 0.25);
}

.link-strong:hover {
  border-color: var(--action);
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  height: var(--header-h);
  background: rgba(247, 249, 252, 0.55);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  transition: background-color var(--dur-state) var(--ease), box-shadow var(--dur-state) var(--ease),
    border-color var(--dur-state) var(--ease);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.86);
  border-bottom-color: var(--border);
  box-shadow: 0 14px 30px -28px rgba(21, 34, 56, 0.55);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: linear-gradient(160deg, #ffffff 0%, #e9f1f9 100%);
  color: var(--action);
  box-shadow: 0 10px 20px -18px rgba(21, 34, 56, 0.7);
}

.brand-text {
  display: flex;
  flex-direction: column;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.1;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.nav {
  margin-inline-start: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.9375rem;
  color: var(--ink-2);
  transition: color var(--dur-state) var(--ease), background-color var(--dur-state) var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 8px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--action));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur-state) var(--ease);
}

.nav-link:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.7);
}

.nav-link[aria-current="true"] {
  color: var(--ink);
}

.nav-link[aria-current="true"]::after {
  transform: scaleX(1);
}

.header-cta {
  display: none;
}

.menu-toggle {
  margin-inline-start: auto;
  display: inline-grid;
  place-content: center;
  gap: 6px;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.8);
  cursor: pointer;
}

.menu-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform var(--dur-state) var(--ease);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-bar:first-child {
  transform: translateY(4px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-bar:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.header-edge {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, rgba(87, 221, 244, 0) 0%, rgba(87, 221, 244, 0.55) 30%, rgba(189, 174, 255, 0.55) 70%, rgba(189, 174, 255, 0) 100%);
  opacity: 0;
  transition: opacity var(--dur-state) var(--ease);
}

.site-header.is-scrolled .header-edge {
  opacity: 1;
}

/* Mobile menu */
.menu {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: grid;
  padding: 14px;
  background: rgba(247, 249, 252, 0.92);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.menu[hidden] {
  display: none;
}

.menu-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 18px;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-card);
  animation: menu-in var(--dur-open) var(--ease-out) both;
  max-height: 100%;
  overflow-y: auto;
  overscroll-behavior: contain;
}

@keyframes menu-in {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.99);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.menu-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.menu-brand {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.08em;
}

.menu-close {
  position: relative;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--bg);
  cursor: pointer;
}

.menu-close-bar {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
}

.menu-close-bar:first-child {
  transform: translate(-50%, -50%) rotate(45deg);
}

.menu-close-bar:last-child {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.menu-nav {
  display: flex;
  flex-direction: column;
}

.menu-link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-height: 56px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.menu-num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--ink-2);
}

.menu-actions {
  display: grid;
  gap: 10px;
}

.menu-meta {
  font-size: 0.8125rem;
  color: var(--ink-2);
}

/* Hero */
.hero {
  padding-top: calc(var(--header-h) + clamp(28px, 6vw, 72px));
  padding-bottom: clamp(48px, 7vw, 96px);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.8);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(87, 221, 244, 0.22);
}

.slogan {
  margin-top: 18px;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--action);
}

.hero-title {
  margin-top: 14px;
  font-size: clamp(2.5rem, 1.15rem + 4.2vw, 7rem);
  letter-spacing: -0.035em;
  line-height: 0.98;
}

.br-lg {
  display: none;
}

.hero-desc {
  margin-top: 22px;
  max-width: 46ch;
  color: var(--ink-2);
  font-size: clamp(1rem, 0.96rem + 0.3vw, 1.1875rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-actions .btn {
  flex: 1 1 220px;
}

.hero-meta {
  margin-top: 26px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.hero-visual {
  position: relative;
  min-width: 0;
}

/* Stage (3D device) */
.stage {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background:
    radial-gradient(120% 90% at 50% 0%, #ffffff 0%, rgba(255, 255, 255, 0) 55%),
    linear-gradient(180deg, #f2f8fd 0%, #eaf4fa 55%, #f7f9fc 100%);
  box-shadow: var(--shadow-card);
}

.stage-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(to right, rgba(21, 34, 56, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(21, 34, 56, 0.055) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(75% 65% at 50% 45%, #000 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(75% 65% at 50% 45%, #000 20%, transparent 100%);
  pointer-events: none;
}

.stage-aura {
  position: absolute;
  z-index: 0;
  width: 58%;
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(48px);
  opacity: 0.5;
  pointer-events: none;
}

.stage-aura--cyan {
  top: -12%;
  left: -10%;
  background: radial-gradient(circle, rgba(87, 221, 244, 0.85) 0%, rgba(87, 221, 244, 0) 70%);
}

.stage-aura--lavender {
  bottom: -16%;
  right: -12%;
  background: radial-gradient(circle, rgba(189, 174, 255, 0.85) 0%, rgba(189, 174, 255, 0) 70%);
}

.stage-aura--mint {
  bottom: -10%;
  left: 10%;
  background: radial-gradient(circle, rgba(184, 240, 221, 0.9) 0%, rgba(184, 240, 221, 0) 70%);
}

.stage-canvas-host {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.w1-canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: pan-y;
  cursor: grab;
}

.w1-canvas.is-dragging {
  cursor: grabbing;
}

.stage-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 6%;
}

.fb-engine {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 24px 30px rgba(21, 34, 56, 0.14));
}

.stage-badge {
  position: absolute;
  z-index: 2;
  top: 14px;
  left: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(220, 229, 239, 0.9);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(6px);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.stage-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--action);
  box-shadow: 0 0 0 3px rgba(39, 72, 216, 0.16);
}

.stage-tools {
  position: absolute;
  z-index: 3;
  left: 14px;
  right: 14px;
  bottom: 14px;
  display: grid;
  gap: 8px;
  padding: 12px;
  border-radius: 18px;
  border: 1px solid rgba(220, 229, 239, 0.9);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(10px) saturate(130%);
  -webkit-backdrop-filter: blur(10px) saturate(130%);
}

.tool-btn {
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-family: var(--font-display);
  font-size: 0.875rem;
  cursor: pointer;
  transition: background-color var(--dur-state) var(--ease), border-color var(--dur-state) var(--ease),
    transform var(--dur-press) var(--ease);
}

.tool-btn:hover {
  border-color: #bfd0e2;
}

.tool-btn:active {
  transform: scale(0.99);
}

.tool-btn[aria-pressed="true"] {
  background: var(--ice);
  border-color: rgba(39, 72, 216, 0.4);
  color: var(--action-dark);
}

.stage-hint,
.stage-caption {
  font-size: 0.75rem;
  line-height: 1.45;
  color: var(--ink-2);
}

.stage-controls {
  position: absolute;
  z-index: 3;
  left: 14px;
  right: 14px;
  bottom: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ctrl {
  flex: 1 1 auto;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(220, 229, 239, 0.95);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(8px);
  font-family: var(--font-display);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: background-color var(--dur-state) var(--ease), border-color var(--dur-state) var(--ease),
    transform var(--dur-press) var(--ease), color var(--dur-state) var(--ease);
}

.ctrl:hover {
  border-color: #bfd0e2;
}

.ctrl:active {
  transform: scale(0.985);
}

.ctrl[aria-pressed="true"] {
  background: var(--ice);
  border-color: rgba(39, 72, 216, 0.45);
  color: var(--action-dark);
}

/* Services */
.services-grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.services-list {
  border-top: 1px solid var(--border);
}

.service {
  border-bottom: 1px solid var(--border);
  padding: 2px 0;
}

.service-trigger {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  width: 100%;
  min-height: 68px;
  padding: 18px 2px;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.service-index {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--ink-2);
}

.service-title {
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 1rem + 0.9vw, 1.5rem);
  letter-spacing: -0.02em;
  transition: color var(--dur-state) var(--ease);
}

.service-mark {
  position: relative;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 1px solid #c6d4e4;
  background: transparent;
  transition: background-color var(--dur-state) var(--ease), border-color var(--dur-state) var(--ease),
    box-shadow var(--dur-state) var(--ease);
}

.service.is-active .service-mark {
  border-color: var(--action);
  background: var(--action);
  box-shadow: 0 0 0 5px rgba(39, 72, 216, 0.12);
}

.service.is-active .service-title {
  color: var(--action-dark);
}

.service-panel {
  padding: 2px 0 24px;
  max-width: 58ch;
  animation: panel-in var(--dur-open) var(--ease-out) both;
}

.service-panel[hidden] {
  display: none;
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.service-text {
  color: var(--ink-2);
}

.service-list-label {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.service-needs {
  display: grid;
  gap: 6px;
  margin-top: 10px;
}

.service-needs li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9375rem;
}

.service-needs li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--cyan), var(--lavender));
}

.service-panel .link-strong {
  margin-top: 18px;
}

.services-visual {
  position: relative;
}

.stage--wide .stage-caption {
  position: absolute;
  z-index: 3;
  left: 14px;
  right: 14px;
  bottom: 14px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(220, 229, 239, 0.9);
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(8px);
}

/* Laboratory / configurator */
.lab-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.configurator {
  padding: clamp(20px, 3vw, 34px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-card);
}

.config-step + .config-step {
  margin-top: 26px;
  padding-top: 26px;
  border-top: 1px dashed var(--border);
}

.config-q {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 500;
}

.config-step-num {
  flex: 0 0 auto;
  padding: 2px 7px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--action);
}

.opt-group {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.opt-group[hidden] {
  display: none;
}

.opt {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #ffffff;
  cursor: pointer;
  transition: border-color var(--dur-state) var(--ease), background-color var(--dur-state) var(--ease),
    transform var(--dur-press) var(--ease);
}

.opt:hover {
  border-color: #c3d2e2;
}

.opt:active {
  transform: scale(0.995);
}

.opt input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.opt-box {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid #c6d4e4;
  transition: border-color var(--dur-state) var(--ease), background-color var(--dur-state) var(--ease);
}

.opt-box::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: #ffffff;
  transform: scale(0);
  transition: transform var(--dur-state) var(--ease);
}

.opt-label {
  font-size: 0.9375rem;
}

.opt:has(input:checked) {
  border-color: rgba(39, 72, 216, 0.5);
  background: linear-gradient(180deg, #f8fbff 0%, #eef4ff 100%);
}

.opt:has(input:checked) .opt-box {
  border-color: var(--action);
  background: var(--action);
}

.opt:has(input:checked) .opt-box::after {
  transform: scale(1);
}

.opt:has(input:focus-visible) {
  outline: 2px solid var(--action);
  outline-offset: 2px;
}

.config-result {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: grid;
  gap: 12px;
  justify-items: start;
}

.config-result-label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.config-summary {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  line-height: 1.5;
}

.config-note {
  font-size: 0.75rem;
  color: var(--ink-2);
}

.stage--lab .stage-caption {
  position: absolute;
  z-index: 3;
  top: 14px;
  right: 14px;
  left: auto;
  max-width: min(72%, 320px);
  padding: 8px 11px;
  border-radius: 12px;
  border: 1px solid rgba(220, 229, 239, 0.9);
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(8px);
  font-size: 0.6875rem;
}

/* Method */
.steps {
  display: grid;
  gap: 14px;
}

.step {
  position: relative;
  padding: 20px 20px 20px 44px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.7);
  transition: border-color var(--dur-state) var(--ease), background-color var(--dur-state) var(--ease);
}

.step-node {
  position: absolute;
  left: 18px;
  top: 26px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1.5px solid #c6d4e4;
  background: #ffffff;
  transition: background-color var(--dur-state) var(--ease), border-color var(--dur-state) var(--ease),
    box-shadow var(--dur-state) var(--ease);
}

.step.is-active {
  border-color: rgba(39, 72, 216, 0.3);
  background: linear-gradient(180deg, #ffffff 0%, #f4f8ff 100%);
}

.step.is-active .step-node {
  border-color: var(--action);
  background: var(--action);
  box-shadow: 0 0 0 5px rgba(39, 72, 216, 0.12);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--ink-2);
}

.step-title {
  margin-top: 6px;
  font-size: 1.125rem;
}

.step-text {
  margin-top: 8px;
  font-size: 0.9375rem;
  color: var(--ink-2);
}

.step-track {
  display: none;
}

/* About */
.about-grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.about-lead {
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 1rem + 0.7vw, 1.5rem);
  line-height: 1.35;
  margin-top: 4px;
}

.about-text {
  margin-top: 16px;
  color: var(--ink-2);
}

.facts {
  display: grid;
  gap: 0;
  margin-top: 24px;
}

.fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.fact-label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.fact-value {
  font-family: var(--font-display);
  font-size: 0.9375rem;
}

.about-copy .btn {
  margin-top: 26px;
}

.about-visual {
  position: relative;
  display: grid;
  gap: 16px;
  align-content: center;
  padding: clamp(22px, 3vw, 34px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background:
    radial-gradient(120% 80% at 100% 0%, rgba(87, 221, 244, 0.18) 0%, rgba(87, 221, 244, 0) 60%),
    linear-gradient(160deg, #ffffff 0%, #eff5fb 100%);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.about-wordmark {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 11vw, 6.5rem);
  line-height: 0.88;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1.5px #b3c5d8;
}

.about-line {
  display: block;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--lavender) 100%);
}

.about-sign {
  display: flex;
  flex-direction: column;
  font-family: var(--font-display);
  font-size: 1.0625rem;
}

.about-sign span {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}

/* Contact */
.contact-grid {
  display: grid;
  gap: 14px;
}

.contact-card {
  display: grid;
  gap: 6px;
  padding: 22px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: transform var(--dur-state) var(--ease), border-color var(--dur-state) var(--ease),
    box-shadow var(--dur-state) var(--ease);
}

.contact-card:hover {
  transform: translateY(-2px);
  border-color: #c3d2e2;
  box-shadow: var(--shadow-soft);
}

.contact-card:active {
  transform: translateY(0) scale(0.996);
}

.contact-card-label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.contact-card-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
}

.contact-card-value {
  font-size: 0.875rem;
  color: var(--ink-2);
}

.contact-card--primary {
  border-color: rgba(39, 72, 216, 0.32);
  background: linear-gradient(160deg, #ffffff 0%, var(--ice) 100%);
}

.contact-card--primary .contact-card-title {
  color: var(--action-dark);
}

.contact-details {
  display: grid;
  margin-top: 22px;
}

.contact-detail {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 2px 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.contact-detail-label {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.contact-detail-value {
  font-family: var(--font-display);
  font-size: 1rem;
  overflow-wrap: anywhere;
}

.copy-btn {
  min-height: 42px;
  padding: 8px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #ffffff;
  font-size: 0.75rem;
  cursor: pointer;
  transition: border-color var(--dur-state) var(--ease), background-color var(--dur-state) var(--ease);
}

.copy-btn:hover {
  border-color: #c3d2e2;
  background: var(--bg);
}

.copy-status {
  min-height: 22px;
  margin-top: 12px;
  font-size: 0.8125rem;
  color: var(--action-dark);
}

/* Footer */
.site-footer {
  margin-top: clamp(40px, 6vw, 80px);
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, #ffffff 0%, var(--ice) 100%);
}

.footer-grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding-block: clamp(36px, 5vw, 64px);
}

.footer-logo {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.footer-sub {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.footer-slogan {
  margin-top: 14px;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  color: var(--action-dark);
}

.footer-owner {
  margin-top: 10px;
  font-size: 0.875rem;
  color: var(--ink-2);
  line-height: 1.5;
}

.footer-heading {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.footer-nav ul,
.footer-contacts ul {
  display: grid;
}

.footer-nav a,
.footer-contacts a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  font-size: 0.9375rem;
  transition: color var(--dur-state) var(--ease);
}

.footer-nav a:hover,
.footer-contacts a:hover {
  color: var(--action);
}

.motion-control {
  display: grid;
  gap: 8px;
  max-width: 250px;
}

.motion-opt {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 6px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #ffffff;
  font-size: 0.875rem;
  cursor: pointer;
}

.motion-opt:has(input:checked) {
  border-color: rgba(39, 72, 216, 0.5);
  background: #f4f8ff;
}

.motion-opt input {
  width: 16px;
  height: 16px;
  accent-color: var(--action);
}

.footer-note {
  margin-top: 10px;
  font-size: 0.75rem;
  color: var(--ink-2);
}

.footer-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  margin-top: 8px;
  font-size: 0.875rem;
  color: var(--action-dark);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  justify-content: space-between;
  padding-block: 18px 26px;
  border-top: 1px solid rgba(220, 229, 239, 0.9);
  font-size: 0.75rem;
  color: var(--ink-2);
}

/* Mobile action bar */
.mobile-bar {
  position: fixed;
  z-index: 80;
  left: 12px;
  right: 12px;
  bottom: calc(12px + env(safe-area-inset-bottom));
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 8px;
  padding: 8px;
  border-radius: 18px;
  border: 1px solid rgba(220, 229, 239, 0.95);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  box-shadow: 0 20px 40px -26px rgba(21, 34, 56, 0.6);
  transition: transform var(--dur-state) var(--ease), opacity var(--dur-state) var(--ease);
}

.mobile-bar.is-hidden {
  transform: translateY(150%);
  opacity: 0;
  pointer-events: none;
}

.mobile-bar-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 10px 14px;
  border-radius: 12px;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 500;
}

.mobile-bar-btn--primary {
  background: var(--action);
  color: #ffffff;
}

.mobile-bar-btn--ghost {
  border: 1px solid var(--border);
  background: #ffffff;
}

/* Reveal helper */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* Motion preferences */
html[data-motion="ridotte"] *,
html[data-motion="pausa"] * {
  animation-duration: 1ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 1ms !important;
  scroll-behavior: auto !important;
}

html[data-motion="ridotte"] .reveal,
html[data-motion="pausa"] .reveal {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (max-width: 959px) {
  .nav {
    display: none;
  }

  body {
    padding-bottom: calc(88px + env(safe-area-inset-bottom));
  }
}

@media (min-width: 600px) {
  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-card--primary {
    grid-column: 1 / -1;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  :root {
    --header-h: 76px;
  }

  .menu-toggle {
    display: none;
  }

  .header-cta {
    display: flex;
    align-items: center;
  }

  .mobile-bar {
    display: none;
  }
}

@media (min-width: 960px) {
  .nav {
    display: block;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1fr);
  }

  .br-lg {
    display: inline;
  }

  .hero-actions {
    justify-content: flex-start;
  }

  .hero-actions .btn {
    flex: 0 0 auto;
  }

  .services-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  }

  .lab-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .about-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  }

  .contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .contact-card--primary {
    grid-column: auto;
  }

  .footer-grid {
    grid-template-columns: 1.3fr 0.7fr 0.8fr 1fr;
  }

  .steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .step {
    padding: 46px 18px 20px;
    border: 0;
    border-top: 1px solid var(--border);
    border-radius: 0;
    background: none;
  }

  .step.is-active {
    background: none;
  }

  .step-node {
    left: 18px;
    top: -5px;
  }

  .opt-group {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .section-head {
    max-width: 48ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}