/* Studio Radoni — design system & layout */

/* Font locali (niente Google Fonts): DM Sans 400–600, Syne 600–800 */
@font-face {
  font-family: "DM Sans";
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url("../assets/fonts/dm-sans-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: "DM Sans";
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url("../assets/fonts/dm-sans-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Syne";
  font-style: normal;
  font-weight: 600 800;
  font-display: swap;
  src: url("../assets/fonts/syne-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: "Syne";
  font-style: normal;
  font-weight: 600 800;
  font-display: swap;
  src: url("../assets/fonts/syne-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@layer reset, tokens, base, layout, components, utilities, motion;

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

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
  }

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

  a {
    color: inherit;
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.18em;
  }

  button,
  input,
  select,
  textarea {
    font: inherit;
    color: inherit;
  }

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

  h1,
  h2,
  h3,
  p {
    margin: 0;
  }
}

@layer tokens {
  :root {
    --bg: #061018;
    --bg-elevated: #0b1a24;
    --bg-soft: #0f2430;
    --line: color-mix(in srgb, #7df0ff 18%, transparent);
    --text: #e8f4f7;
    --text-muted: #9bb4bf;
    --accent: #7df0ff;
    --accent-deep: #2ec8e0;
    --warm: #f3f0e8;
    --danger: #ff7b7b;
    --ok: #6dffb0;
    --font-display: "Syne", system-ui, sans-serif;
    --font-body: "DM Sans", system-ui, sans-serif;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 3rem;
    --space-8: 4.5rem;
    --space-9: 7rem;
    --radius: 0.35rem;
    --header-h: 4.25rem;
    --container: 70rem;
    --shadow-glow: 0 0 40px color-mix(in srgb, var(--accent) 25%, transparent);
  }
}

@layer base {
  html {
    overflow-x: clip;
  }

  body {
    font-family: var(--font-body);
    font-optical-sizing: auto;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    text-rendering: optimizeLegibility;
    overflow-x: clip;
  }

  h1,
  h2,
  h3 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--warm);
  }

  ::selection {
    background: color-mix(in srgb, var(--accent) 40%, transparent);
    color: var(--bg);
  }

  :focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
  }
}

@layer layout {
  .container {
    width: min(100% - 2rem, var(--container));
    margin-inline: auto;
  }

  .section-head {
    max-width: 40rem;
    margin-bottom: var(--space-7);
  }

  .section-head h2 {
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    margin-bottom: var(--space-4);
  }

  .section-head__lead {
    color: var(--text-muted);
    font-size: 1.05rem;
  }

  .eyebrow {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: var(--space-3);
  }
}

@layer components {
  .visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    width: 0;
  }

  /* Header */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
  }

  .topbar {
    display: none;
    justify-content: flex-end;
    gap: var(--space-3);
    align-items: center;
    padding: 0.35rem 1.25rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    border-bottom: 1px solid color-mix(in srgb, var(--line) 60%, transparent);
    background: color-mix(in srgb, var(--bg-elevated) 70%, transparent);
  }

  .topbar a {
    text-decoration: none;
  }

  .topbar a:hover {
    color: var(--accent);
  }

  .topbar__sep {
    width: 1px;
    height: 0.8rem;
    background: var(--line);
  }

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

  .nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    min-height: var(--header-h);
    padding: 0 1.25rem;
    width: min(100%, calc(var(--container) + 2.5rem));
    margin-inline: auto;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    text-decoration: none;
  }

  .brand__mark {
    flex-shrink: 0;
    filter: drop-shadow(0 0 10px color-mix(in srgb, var(--accent) 35%, transparent));
  }

  .brand__word {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.02em;
    color: var(--warm);
  }

  .nav-toggle {
    display: grid;
    place-items: center;
    width: 2.75rem;
    height: 2.75rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: transparent;
    cursor: pointer;
  }

  .nav-toggle__bars,
  .nav-toggle__bars::before,
  .nav-toggle__bars::after {
    display: block;
    width: 1.15rem;
    height: 2px;
    background: var(--text);
    position: relative;
    transition: transform 0.2s ease;
  }

  .nav-toggle__bars::before,
  .nav-toggle__bars::after {
    content: "";
    position: absolute;
    left: 0;
  }

  .nav-toggle__bars::before {
    top: -6px;
  }

  .nav-toggle__bars::after {
    top: 6px;
  }

  .site-header.is-open .nav-toggle__bars {
    background: transparent;
  }

  .site-header.is-open .nav-toggle__bars::before {
    top: 0;
    transform: rotate(45deg);
  }

  .site-header.is-open .nav-toggle__bars::after {
    top: 0;
    transform: rotate(-45deg);
  }

  .site-nav {
    display: none;
    position: absolute;
    inset: auto 0 0 0;
    top: 100%;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-5) 1.25rem var(--space-6);
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--line);
  }

  .site-header.is-open .site-nav {
    display: flex;
  }

  .site-nav__list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
  }

  .site-nav__list a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
  }

  .site-nav__list a:hover {
    color: var(--accent);
  }

  @media (min-width: 900px) {
    .nav-toggle {
      display: none;
    }

    .site-nav {
      display: flex;
      position: static;
      flex-direction: row;
      align-items: center;
      gap: var(--space-5);
      padding: 0;
      background: transparent;
      border: 0;
    }

    .site-nav__list {
      flex-direction: row;
      gap: var(--space-5);
    }
  }

  .lang-switch {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.04em;
  }

  .lang-switch a {
    text-decoration: none;
    color: var(--text-muted);
    transition: color 0.15s ease;
  }

  .lang-switch a:hover {
    color: var(--accent);
  }

  .lang-switch a[aria-current="page"] {
    color: var(--accent);
  }

  .lang-switch span {
    color: var(--text-muted);
    opacity: 0.45;
    user-select: none;
  }

  /* Scroll progress */
  .scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    z-index: 200;
    background: color-mix(in srgb, var(--accent) 12%, transparent);
    pointer-events: none;
  }

  .scroll-progress span {
    display: block;
    height: 100%;
    transform-origin: left center;
    transform: scaleX(0);
    background: linear-gradient(90deg, var(--accent-deep), var(--accent));
    box-shadow: 0 0 12px var(--accent);
  }

  /* Buttons — fill scuro leggibile + bordo metallico */
  .btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.55rem;
    border-radius: 1.15rem;
    border: 2.5px solid transparent;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    overflow: hidden;
    isolation: isolate;
    appearance: none;
    -webkit-appearance: none;
    color: #f4f7fb;
    transition:
      transform 0.2s ease,
      filter 0.25s ease,
      box-shadow 0.25s ease;
  }

  .btn__label {
    position: relative;
    z-index: 2;
    letter-spacing: 0.02em;
  }

  .btn--glass {
    backdrop-filter: blur(8px) saturate(1.1);
    -webkit-backdrop-filter: blur(8px) saturate(1.1);
    /* fill scuro (padding-box) + bordo metallico argento (border-box) */
    background:
      linear-gradient(180deg, rgb(10 24 34 / 0.92), rgb(6 16 24 / 0.96)) padding-box,
      linear-gradient(
        135deg,
        #ffffff 0%,
        #c5ccd4 16%,
        #8b949e 34%,
        #eef2f6 50%,
        #6a737c 68%,
        #dbe1e8 86%,
        #ffffff 100%
      ) border-box;
    box-shadow:
      0 0 14px rgb(200 210 220 / 0.16),
      0 6px 20px rgb(0 0 0 / 0.3);
  }

  /* Solo filo di luce sul bordo interno (non sul corpo) */
  .btn__shine-top {
    position: absolute;
    z-index: 1;
    left: 10%;
    right: 10%;
    top: 3px;
    height: 1px;
    border-radius: 999px;
    background: linear-gradient(
      90deg,
      transparent,
      rgb(255 255 255 / 0.85) 50%,
      transparent
    );
    pointer-events: none;
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  }

  .btn__shine-bot {
    position: absolute;
    z-index: 1;
    left: 16%;
    right: 16%;
    bottom: 3px;
    height: 1px;
    border-radius: 999px;
    background: linear-gradient(
      90deg,
      transparent,
      rgb(255 255 255 / 0.35) 50%,
      transparent
    );
    pointer-events: none;
    opacity: 0.7;
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  }

  .btn--glass:hover {
    filter: brightness(1.05);
    transform: translateY(-1px);
  }

  .btn--glass.is-tilt .btn__shine-top {
    transform: translateX(22%);
  }

  .btn--glass.is-tilt .btn__shine-bot {
    transform: translateX(-18%);
  }

  .btn--sm {
    padding: 0.5rem 1.05rem;
    font-size: 0.9rem;
    border-radius: 0.95rem;
  }

  .btn--block {
    width: 100%;
  }

  .btn--primary.btn--glass {
    color: #fff8e8;
    background:
      linear-gradient(180deg, rgb(36 28 10 / 0.94), rgb(18 14 6 / 0.98)) padding-box,
      linear-gradient(
        135deg,
        #fff6d0 0%,
        #e8c56a 14%,
        #a67c2a 32%,
        #f0d78c 48%,
        #7a5a18 64%,
        #d4b45a 82%,
        #fff1c2 100%
      ) border-box;
    box-shadow:
      0 0 16px rgb(212 180 90 / 0.22),
      0 6px 20px rgb(0 0 0 / 0.32);
  }

  .btn--ghost.btn--glass {
    color: #f2f5f8;
    background:
      linear-gradient(180deg, rgb(10 24 34 / 0.92), rgb(6 16 24 / 0.96)) padding-box,
      linear-gradient(
        135deg,
        #ffffff 0%,
        #c5ccd4 16%,
        #8b949e 34%,
        #eef2f6 50%,
        #6a737c 68%,
        #dbe1e8 86%,
        #ffffff 100%
      ) border-box;
  }

  .contact-form .btn--primary {
    color: #fff8e8;
  }
  .ambient-light {
    position: fixed;
    inset: -25%;
    z-index: 0;
    pointer-events: none;
    background:
      radial-gradient(circle at 30% 30%, color-mix(in srgb, var(--accent) 30%, transparent), transparent 42%),
      radial-gradient(circle at 70% 65%, color-mix(in srgb, var(--accent-deep) 20%, transparent), transparent 40%);
    animation: light-drift 16s ease-in-out infinite alternate;
    mix-blend-mode: screen;
    opacity: 0.95;
    will-change: transform;
  }

  .ambient-orbs {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
  }

  .ambient-orbs__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.35;
    mix-blend-mode: screen;
    animation: orb-float 22s ease-in-out infinite;
  }

  .ambient-orbs__orb:nth-child(1) {
    width: min(42vw, 28rem);
    height: min(42vw, 28rem);
    left: -8%;
    top: 20%;
    background: color-mix(in srgb, var(--accent) 45%, transparent);
  }

  .ambient-orbs__orb:nth-child(2) {
    width: min(36vw, 22rem);
    height: min(36vw, 22rem);
    right: -6%;
    top: 55%;
    background: color-mix(in srgb, var(--accent-deep) 40%, transparent);
    animation-duration: 28s;
    animation-delay: -8s;
  }

  .ambient-orbs__orb:nth-child(3) {
    width: min(28vw, 16rem);
    height: min(28vw, 16rem);
    left: 40%;
    bottom: -8%;
    background: color-mix(in srgb, #9ef6ff 35%, transparent);
    animation-duration: 19s;
    animation-delay: -3s;
  }

  body > *:not(.ambient-light):not(.ambient-orbs) {
    position: relative;
    z-index: 1;
  }

  .hero {
    position: relative;
    isolation: isolate;
    min-height: min(62vh, 36rem);
    display: grid;
    align-items: start;
    padding: var(--space-5) 0 var(--space-7);
    overflow: clip;
  }

  .hero__atmosphere {
    position: absolute;
    inset: 0;
    z-index: -1;
    --mx: 50%;
    --my: 30%;
    --px: 0px;
    --py: 0px;
    background:
      radial-gradient(circle at var(--mx) var(--my), color-mix(in srgb, var(--accent) 16%, transparent), transparent 38%),
      linear-gradient(180deg, #041018 0%, color-mix(in srgb, var(--bg) 55%, transparent) 55%, #081820 100%);
  }

  .hero__glow,
  .hero__glow--secondary,
  .hero__glow--tertiary,
  .hero__watermark {
    translate: var(--px, 0px) var(--py, 0px);
    transition: translate 0.25s ease-out;
  }

  .hero__photo-wrap {
    position: absolute;
    inset: 0;
    overflow: hidden;
  }

  .hero__photo-wrap picture {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
  }

  .hero__photo {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    max-width: none;
    min-width: 100%;
    min-height: 100%;
    object-fit: cover;
    object-position: center center;
    opacity: 0.48;
    transform-origin: center center;
  }

  @media (prefers-reduced-motion: no-preference) and (min-width: 768px) {
    .hero__photo {
      animation: hero-kenburns 32s ease-in-out infinite alternate;
    }
  }

  @media (min-width: 1921px) {
    .hero__photo {
      /* copertura oltre FHD senza 100vw (evita scroll orizzontale) */
      width: 100%;
      height: 100%;
      left: 0;
      top: 0;
      right: 0;
      bottom: 0;
      translate: none;
    }
  }

  @media (max-width: 767px) {
    .hero__particles,
    .hero__glow--secondary,
    .hero__glow--tertiary,
    .hero__watermark,
    .ambient-orbs {
      display: none;
    }

    .hero__glow {
      filter: blur(12px);
      opacity: 0.7;
    }
  }

  .deep,
  .proof,
  .method,
  .contact,
  .metrics {
    content-visibility: auto;
    contain-intrinsic-size: 1px 800px;
  }

  .hero__particles {
    position: absolute;
    inset: 0;
    background-image:
      radial-gradient(circle, color-mix(in srgb, var(--accent) 80%, transparent) 0 1.2px, transparent 1.4px),
      radial-gradient(circle, color-mix(in srgb, #fff 55%, transparent) 0 1px, transparent 1.2px),
      radial-gradient(circle, color-mix(in srgb, var(--accent-deep) 70%, transparent) 0 1.1px, transparent 1.3px);
    background-size: 120px 120px, 180px 180px, 90px 90px;
    background-position: 0 0, 40px 60px, 80px 20px;
    mask-image: radial-gradient(ellipse 75% 65% at 50% 40%, #000 10%, transparent 75%);
    opacity: 0.45;
    animation: particles-drift 26s linear infinite;
    pointer-events: none;
  }

  .hero__grid {
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(color-mix(in srgb, var(--accent) 8%, transparent) 1px, transparent 1px),
      linear-gradient(90deg, color-mix(in srgb, var(--accent) 8%, transparent) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 20%, transparent 75%);
    opacity: 0.45;
    animation: grid-shift 22s linear infinite;
  }

  .hero__glow {
    position: absolute;
    width: min(40vw, 36rem);
    height: min(40vw, 36rem);
    right: 4%;
    top: 10%;
    border-radius: 50%;
    background: radial-gradient(circle, color-mix(in srgb, var(--accent) 42%, transparent), transparent 65%);
    filter: blur(18px);
    animation: light-orbit 12s ease-in-out infinite alternate;
  }

  .hero__glow--secondary {
    width: min(32vw, 24rem);
    height: min(32vw, 24rem);
    right: auto;
    left: 5%;
    top: auto;
    bottom: 8%;
    background: radial-gradient(circle, color-mix(in srgb, var(--accent-deep) 32%, transparent), transparent 70%);
    animation-delay: -4s;
    animation-duration: 16s;
  }

  .hero__glow--tertiary {
    width: min(24vw, 18rem);
    height: min(24vw, 18rem);
    right: 28%;
    top: 42%;
    left: auto;
    bottom: auto;
    background: radial-gradient(circle, color-mix(in srgb, #b8fbff 28%, transparent), transparent 70%);
    animation-delay: -9s;
    animation-duration: 20s;
  }

  .hero__watermark {
    position: absolute;
    right: -4%;
    bottom: 8%;
    width: min(42vw, 28rem);
    max-width: none;
    opacity: 0.07;
    pointer-events: none;
    animation: watermark-spin 48s linear infinite;
  }

  .hero__inner {
    max-width: 42rem;
  }

  .hero__brand {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(2.4rem, 7vw, 4.5rem);
    line-height: 0.95;
    letter-spacing: -0.04em;
    color: var(--warm);
    margin-bottom: var(--space-5);
    text-shadow: 0 0 40px color-mix(in srgb, var(--accent) 20%, transparent);
  }

  .hero__title {
    font-size: clamp(1.35rem, 2.8vw, 1.85rem);
    font-weight: 600;
    color: var(--text);
    margin-bottom: var(--space-4);
    max-width: 28ch;
  }

  .hero__lead {
    color: var(--text-muted);
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    margin-bottom: var(--space-6);
    max-width: 42ch;
  }

  .hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
  }
  /* ICP */
  .icp {
    padding: var(--space-6) 0;
    border-block: 1px solid var(--line);
    background: color-mix(in srgb, var(--bg-soft) 55%, transparent);
  }

  .icp__title {
    font-size: 0.8rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: var(--space-4);
  }

  .icp__list {
    display: grid;
    gap: var(--space-4);
  }

  @media (min-width: 768px) {
    .icp__list {
      grid-template-columns: repeat(3, 1fr);
      gap: var(--space-6);
    }
  }

  .icp__list li {
    color: var(--text-muted);
    font-size: 0.98rem;
    padding-left: var(--space-4);
    border-left: 2px solid var(--accent);
  }

  .icp__list strong {
    color: var(--warm);
    font-weight: 600;
  }

  .icp__sectors {
    display: block;
    margin-top: var(--space-2);
    font-size: 0.85rem;
    color: color-mix(in srgb, var(--accent) 75%, var(--text-muted));
    letter-spacing: 0.02em;
  }

  /* Metrics / counters */
  .metrics {
    padding: var(--space-8) 0;
    border-bottom: 1px solid var(--line);
    background:
      radial-gradient(ellipse 70% 80% at 50% 0%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 60%),
      var(--bg);
  }

  .metrics__head {
    margin-bottom: var(--space-6);
    max-width: 36rem;
  }

  .metrics__head h2 {
    font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  }

  .metrics__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6) var(--space-4);
  }

  @media (min-width: 800px) {
    .metrics__list {
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: var(--space-5);
    }
  }

  .metrics__list li {
    position: relative;
    padding-top: var(--space-2);
  }

  @media (min-width: 800px) {
    .metrics__list li:not(:first-child)::before {
      content: "";
      position: absolute;
      left: calc(var(--space-5) * -0.5);
      top: 0.35rem;
      bottom: 0.35rem;
      width: 1px;
      background: linear-gradient(
        180deg,
        transparent,
        color-mix(in srgb, var(--accent) 45%, transparent),
        transparent
      );
    }
  }

  .metrics__value {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(2.4rem, 5.5vw, 3.6rem);
    line-height: 1;
    letter-spacing: -0.04em;
    color: var(--accent);
    margin-bottom: var(--space-2);
    text-shadow: 0 0 28px color-mix(in srgb, var(--accent) 28%, transparent);
  }

  .metrics__label {
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-muted);
  }

  /* Competencies */
  .competencies {
    padding: var(--space-9) 0;
  }

  .comp-hub {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
    margin-bottom: var(--space-8);
  }

  @media (min-width: 800px) {
    .comp-hub {
      grid-template-columns: repeat(5, 1fr);
    }
  }

  @media (max-width: 799px) and (min-width: 520px) {
    .comp-hub {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  .comp-hub__item {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-5);
    text-decoration: none;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background:
      radial-gradient(circle at var(--gx, 50%) var(--gy, 50%), color-mix(in srgb, var(--accent) 14%, transparent), transparent 55%),
      color-mix(in srgb, var(--bg-elevated) 80%, transparent);
    transform: perspective(700px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
    transform-style: preserve-3d;
    transition:
      border-color 0.2s ease,
      transform 0.15s ease,
      box-shadow 0.2s ease;
  }

  .comp-hub__item:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
  }

  .comp-hub__num {
    font-family: var(--font-display);
    font-size: 0.85rem;
    color: var(--accent);
    letter-spacing: 0.08em;
  }

  .comp-hub__name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--warm);
  }

  .comp-hub__sub {
    font-size: 0.62rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 0.15rem;
  }

  .deep {
    padding: var(--space-7) 0;
    border-top: 1px solid var(--line);
  }

  .deep--alt {
    position: relative;
    background: transparent;
  }

  .deep--alt::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 100vw;
    max-width: 100%;
    transform: translateX(-50%);
    background: linear-gradient(90deg, color-mix(in srgb, var(--bg-soft) 70%, transparent), transparent);
    z-index: -1;
    pointer-events: none;
  }

  .deep__grid {
    display: grid;
    gap: var(--space-5);
  }

  @media (min-width: 900px) {
    .deep__grid {
      grid-template-columns: 1fr 1.05fr;
      gap: var(--space-7);
      align-items: center;
    }

    .deep--alt .deep__grid {
      grid-template-columns: 1.05fr 1fr;
    }

    .deep--alt .deep__visual {
      order: -1;
    }
  }

  .deep__copy {
    display: grid;
    gap: var(--space-5);
  }

  .deep__visual {
    margin: 0;
    border-radius: 1rem;
    overflow: hidden;
    border: 1px solid var(--line);
    background: var(--bg-elevated);
    box-shadow: 0 20px 50px rgb(0 0 0 / 0.35);
  }

  .deep__visual .diagram {
    width: 100%;
    height: auto;
    display: block;
  }

  /* Diagram animations (attivate da .is-anim) */
  .deep__visual .d-loop {
    animation: d-rotate 14s linear infinite;
    transform-box: fill-box;
    transform-origin: center;
  }

  .deep__visual .d-core {
    transform-box: fill-box;
    transform-origin: center;
    animation: d-pulse 2.6s ease-in-out infinite;
  }

  .deep__visual .d-node {
    transform-box: fill-box;
    transform-origin: center;
    animation: d-blink 2.4s ease-in-out infinite;
  }

  .deep__visual .d-node--1 { animation-delay: 0s; }
  .deep__visual .d-node--2 { animation-delay: 0.6s; }
  .deep__visual .d-node--3 { animation-delay: 1.2s; }
  .deep__visual .d-node--4 { animation-delay: 1.8s; }

  .deep__visual .d-flow {
    stroke-dasharray: 8 6;
    animation: d-dash 1.4s linear infinite;
  }

  .deep__visual .d-pt {
    transform-box: fill-box;
    transform-origin: center;
    animation: d-blink 1.8s ease-in-out infinite;
  }
  .deep__visual .d-pt--1 { animation-delay: 0s; }
  .deep__visual .d-pt--2 { animation-delay: 0.25s; }
  .deep__visual .d-pt--3 { animation-delay: 0.5s; }
  .deep__visual .d-pt--4 { animation-delay: 0.75s; }
  .deep__visual .d-pt--5 { animation-delay: 1s; }
  .deep__visual .d-pt--6 { animation-delay: 1.25s; }

  .deep__visual .d-eval {
    animation: d-fill 2.4s cubic-bezier(0.22, 1, 0.36, 1) both;
  }

  .deep__visual .d-ver {
    transform-box: fill-box;
    transform-origin: center;
    animation: d-pop 2.2s ease-in-out infinite;
  }

  .deep__visual .d-tick,
  .deep__visual .d-amb {
    opacity: 0;
  }

  .deep__visual.is-anim .d-tick {
    animation: d-draw 1s ease-out 0.3s both;
  }

  .deep__visual.is-anim .d-amb {
    animation: d-fade 1.2s ease-out both;
  }

  @keyframes d-rotate {
    to { transform: rotate(360deg); }
  }

  @keyframes d-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.08); opacity: 0.85; }
  }

  @keyframes d-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.35; }
  }

  @keyframes d-dash {
    to { stroke-dashoffset: -14; }
  }

  @keyframes d-fill {
    from { stroke-dashoffset: 100; }
    to { stroke-dashoffset: 6; }
  }

  @keyframes d-pop {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.12); }
  }

  @keyframes d-draw {
    from { stroke-dasharray: 60; stroke-dashoffset: 60; opacity: 0; }
    to { stroke-dasharray: 60; stroke-dashoffset: 0; opacity: 1; }
  }

  @keyframes d-fade {
    to { opacity: 0.08; }
  }

  .deep__intro h3 {
    font-size: clamp(1.4rem, 2.5vw, 1.9rem);
    margin-bottom: var(--space-4);
  }

  .deep__intro p:last-child {
    color: var(--text-muted);
  }

  .deep__outcome {
    margin: 0;
    font-size: 1.05rem;
    line-height: 1.45;
    color: var(--text);
  }

  .deep__outcome strong {
    color: var(--accent);
    font-weight: 600;
  }

  .deep__bullets {
    display: grid;
    gap: var(--space-3);
  }

  .deep__bullets li {
    position: relative;
    padding: var(--space-4) var(--space-4) var(--space-4) 1.75rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: color-mix(in srgb, var(--bg) 60%, transparent);
    color: var(--text-muted);
  }

  .deep__bullets li::before {
    content: "";
    position: absolute;
    left: 0.75rem;
    top: 1.35rem;
    width: 0.4rem;
    height: 0.4rem;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent);
  }

  .deep__proof {
    font-size: 0.95rem;
    color: var(--accent);
    font-style: italic;
  }

  .deep__copy code {
    font-family: Consolas, "Courier New", monospace;
    font-size: 0.9em;
    color: var(--warm);
    font-style: normal;
  }

  .gh-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    margin-left: 0.35rem;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    border: 1px solid color-mix(in srgb, #fff 22%, transparent);
    background: color-mix(in srgb, #fff 8%, transparent);
    color: var(--text) !important;
    font-style: normal;
    font-size: 0.8rem;
    font-weight: 600;
    text-decoration: none !important;
    vertical-align: middle;
    transition: border-color 0.2s ease, background 0.2s ease;
  }

  .gh-badge:hover,
  .gh-badge:focus,
  .gh-badge:visited {
    color: var(--text) !important;
    border-color: var(--accent);
    background: color-mix(in srgb, var(--accent) 12%, transparent);
  }

  .gh-badge__icon {
    flex-shrink: 0;
  }

  .proof-link {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 0.18em;
    text-decoration-thickness: 0.08em;
  }

  .proof-link:hover,
  .proof-link:focus,
  .proof-link:visited {
    color: inherit;
  }

  /* Proof */
  .proof {
    padding: var(--space-9) 0;
    background:
      radial-gradient(ellipse 50% 40% at 50% 0%, color-mix(in srgb, var(--accent) 10%, transparent), transparent),
      var(--bg-elevated);
    border-block: 1px solid var(--line);
  }

  .proof__grid {
    display: grid;
    gap: var(--space-4);
  }

  @media (min-width: 800px) {
    .proof__grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  .proof-card {
    padding: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background:
      radial-gradient(circle at var(--gx, 50%) var(--gy, 50%), color-mix(in srgb, var(--accent) 10%, transparent), transparent 55%),
      color-mix(in srgb, var(--bg) 50%, transparent);
    display: flex;
    flex-direction: column;
    gap: 0;
    min-height: 100%;
    overflow: hidden;
    transform: perspective(800px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
    transform-style: preserve-3d;
    transition: border-color 0.2s ease, transform 0.15s ease;
  }

  .proof-card:hover {
    border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  }

  .proof-card__visual {
    width: 100%;
    height: auto;
    border-bottom: 1px solid var(--line);
  }

  .proof-card h3,
  .proof-card p {
    margin-inline: var(--space-5);
  }

  .proof-card h3 {
    font-size: 1.35rem;
    margin-top: var(--space-5);
  }

  .proof-card p {
    color: var(--text-muted);
    flex: 1;
    margin-top: var(--space-3);
    margin-bottom: var(--space-5);
  }

  .proof-card p strong {
    color: var(--warm);
    font-weight: 600;
  }

  .proof__cta {
    margin-top: var(--space-6);
    text-align: center;
  }

  .text-link {
    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
    width: fit-content;
  }

  .text-link:hover {
    text-decoration: underline;
  }

  /* Method */
  .method {
    padding: var(--space-9) 0;
  }

  .method__steps {
    display: grid;
    gap: var(--space-4);
    counter-reset: none;
  }

  @media (min-width: 800px) {
    .method__steps {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  .method__steps li {
    padding: var(--space-5);
    border-top: 2px solid var(--accent);
  }

  .method__num {
    display: block;
    font-family: var(--font-display);
    color: var(--accent);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-3);
  }

  .method__steps h3 {
    font-size: 1.2rem;
    margin-bottom: var(--space-3);
  }

  .method__steps p {
    color: var(--text-muted);
    font-size: 0.95rem;
  }

  /* Mid CTA */
  .mid-cta {
    padding: var(--space-8) 0;
    background:
      linear-gradient(120deg, color-mix(in srgb, var(--accent-deep) 22%, var(--bg)), var(--bg-soft) 55%, var(--bg));
    border-block: 1px solid var(--line);
  }

  .mid-cta__inner {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    align-items: flex-start;
  }

  @media (min-width: 800px) {
    .mid-cta__inner {
      flex-direction: row;
      justify-content: space-between;
      align-items: center;
    }
  }

  .mid-cta h2 {
    font-size: clamp(1.5rem, 3vw, 2.1rem);
    margin-bottom: var(--space-3);
  }

  .mid-cta p {
    color: var(--text-muted);
  }

  .mid-cta__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
  }

  /* Contact */
  .contact {
    padding: var(--space-9) 0;
  }

  .contact__grid {
    display: grid;
    gap: var(--space-7);
  }

  @media (min-width: 900px) {
    .contact__grid {
      grid-template-columns: 1fr 1.05fr;
      align-items: start;
    }
  }

  .contact__list {
    display: grid;
    gap: var(--space-5);
  }

  .contact__label {
    display: block;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--space-2);
  }

  .contact__list a {
    font-size: 1.15rem;
    text-decoration: none;
    font-weight: 600;
  }

  .contact__list a:hover {
    color: var(--accent);
  }

  .contact__address {
    margin: 0;
    font-style: normal;
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.45;
  }

  .map-actions {
    margin-top: var(--space-3);
  }

  .contact-form {
    padding: var(--space-6);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--bg-elevated);
  }

  .contact-form__title {
    font-size: 1.25rem;
    margin-bottom: var(--space-5);
  }

  .field {
    display: grid;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
  }

  .field label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
  }

  .field input,
  .field select,
  .field textarea {
    width: 100%;
    padding: 0.75rem 0.9rem;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: var(--bg);
    color: var(--text);
  }

  .field input:focus,
  .field select:focus,
  .field textarea:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
  }

  .form-note {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--space-4);
  }

  .form-note a {
    color: var(--accent);
  }

  .form-status {
    margin-top: var(--space-4);
    min-height: 1.4em;
    font-size: 0.95rem;
  }

  .form-status.is-ok {
    color: var(--ok);
  }

  .form-status.is-err {
    color: var(--danger);
  }

  /* Footer */
  .site-footer {
    padding: var(--space-7) 0 var(--space-5);
    border-top: 1px solid var(--line);
    background: #040c12;
  }

  .site-footer__grid {
    display: grid;
    gap: var(--space-5);
    margin-bottom: var(--space-6);
  }

  @media (min-width: 768px) {
    .site-footer__grid {
      grid-template-columns: 1.4fr 1fr auto;
      align-items: start;
    }
  }

  .site-footer__brand p {
    margin-top: var(--space-3);
    color: var(--text-muted);
    font-size: 0.9rem;
  }

  .site-footer__contact {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
  }

  .site-footer__address {
    margin: 0 0 var(--space-1);
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.4;
  }

  .site-footer__contact a {
    text-decoration: none;
    color: var(--text-muted);
  }

  .site-footer__contact a:hover {
    color: var(--accent);
  }

  .site-footer__social {
    display: flex;
    gap: var(--space-3);
  }

  .social {
    display: grid;
    place-items: center;
    width: 2.5rem;
    height: 2.5rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  }

  .social:hover {
    color: var(--accent);
    border-color: var(--accent);
  }

  .social.is-placeholder {
    opacity: 0.55;
    cursor: default;
  }

  .social.is-placeholder:hover {
    color: var(--text-muted);
    border-color: var(--line);
  }

  .site-footer__copy {
    color: var(--text-muted);
    font-size: 0.85rem;
    padding-top: var(--space-4);
    border-top: 1px solid color-mix(in srgb, var(--line) 50%, transparent);
  }

  /* Back to top */
  .back-top {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    z-index: 90;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: color-mix(in srgb, var(--bg-elevated) 90%, transparent);
    color: var(--accent);
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .back-top.is-visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .back-top:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
  }

  /* Privacy page */
  .page-privacy {
    padding: calc(var(--header-h) + var(--space-7)) 0 var(--space-9);
  }

  .page-privacy .prose {
    max-width: 42rem;
  }

  .page-privacy .prose h1 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin-bottom: var(--space-5);
  }

  .page-privacy .prose h2 {
    font-size: 1.2rem;
    margin: var(--space-6) 0 var(--space-3);
  }

  .page-privacy .prose p,
  .page-privacy .prose li {
    color: var(--text-muted);
    margin-bottom: var(--space-3);
  }

  .page-privacy .prose ul {
    list-style: disc;
    padding-left: 1.25rem;
  }
}

@layer utilities {
  .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition:
      opacity 0.7s ease,
      transform 0.7s ease;
  }

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

@layer motion {
  @keyframes light-drift {
    0% {
      transform: translate(-8%, -6%) scale(1);
      opacity: 0.65;
    }
    50% {
      transform: translate(10%, 4%) scale(1.15);
      opacity: 1;
    }
    100% {
      transform: translate(6%, 12%) scale(1.08);
      opacity: 0.8;
    }
  }

  @keyframes light-orbit {
    0% {
      transform: translate(0, 0) scale(1);
      opacity: 0.55;
    }
    50% {
      transform: translate(-12%, 10%) scale(1.12);
      opacity: 0.95;
    }
    100% {
      transform: translate(8%, -6%) scale(1.05);
      opacity: 0.7;
    }
  }

  @keyframes hero-kenburns {
    from {
      transform: scale(1.02) translate(0, 0);
    }
    to {
      transform: scale(1.12) translate(-2.5%, 1.5%);
    }
  }

  @keyframes hero-kenburns-wide {
    from {
      transform: scale(1.05);
    }
    to {
      transform: scale(1.2);
    }
  }

  @keyframes particles-drift {
    from {
      background-position: 0 0, 40px 60px, 80px 20px;
    }
    to {
      background-position: 120px 120px, 220px 240px, 170px 110px;
    }
  }

  @keyframes orb-float {
    0% {
      transform: translate(0, 0) scale(1);
    }
    50% {
      transform: translate(8%, -12%) scale(1.15);
    }
    100% {
      transform: translate(-6%, 8%) scale(1.05);
    }
  }

  @keyframes grid-shift {
    from {
      background-position: 0 0;
    }
    to {
      background-position: 56px 56px;
    }
  }

  @keyframes watermark-spin {
    from {
      transform: rotate(0deg);
    }
    to {
      transform: rotate(360deg);
    }
  }

  @keyframes pulse-glow {
    0%,
    100% {
      opacity: 0.55;
      transform: scale(1);
    }
    50% {
      opacity: 0.9;
      transform: scale(1.06);
    }
  }

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

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

    .ambient-light,
    .ambient-orbs__orb,
    .hero__glow,
    .hero__photo,
    .hero__grid,
    .hero__particles,
    .hero__watermark,
    .deep__visual .d-loop,
    .deep__visual .d-core,
    .deep__visual .d-node,
    .deep__visual .d-flow,
    .deep__visual .d-pt,
    .deep__visual .d-eval,
    .deep__visual .d-ver {
      animation: none !important;
    }

    .btn,
    .comp-hub__item,
    .proof-card {
      transition: none;
    }
  }
}