/* ============================================================
   dellavalle.solutions — landing
   Dark, caldo, da consulente di fiducia.
   ============================================================ */

/* ---- Design tokens ---------------------------------------- */
:root {
  /* surfaces (dark, leggermente caldo) */
  --bg-0: oklch(0.165 0.010 285);
  --bg-1: oklch(0.205 0.012 285);
  --bg-2: oklch(0.245 0.014 285);
  --line: oklch(0.32 0.012 285);
  --line-soft: oklch(0.30 0.010 285 / 0.55);

  /* ink */
  --text:   oklch(0.96 0.004 285);
  --text-1: oklch(0.80 0.008 285);
  --text-2: oklch(0.63 0.010 285);

  /* accents — stessa L/C, hue diverse */
  --accent:       oklch(0.74 0.135 290);   /* viola */
  --accent-ink:   oklch(0.20 0.05 290);
  --accent-soft:  oklch(0.74 0.135 290 / 0.14);
  --accent-line:  oklch(0.74 0.135 290 / 0.40);
  --warm:         oklch(0.78 0.115 66);    /* ambra — il tocco umano */
  --warm-soft:    oklch(0.78 0.115 66 / 0.14);

  /* type */
  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-body: "Hanken Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  /* geometry */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --maxw: 1180px;
  --gutter: clamp(20px, 5vw, 64px);

  /* motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.7s;
}

/* accent overridable via Tweaks */
:root[data-accent="ambra"] { --accent: oklch(0.78 0.115 66);  --accent-soft: oklch(0.78 0.115 66 / 0.14); --accent-line: oklch(0.78 0.115 66 / 0.40); }
:root[data-accent="verde"] { --accent: oklch(0.74 0.125 158); --accent-soft: oklch(0.74 0.125 158 / 0.14); --accent-line: oklch(0.74 0.125 158 / 0.40); }
:root[data-accent="blu"]   { --accent: oklch(0.72 0.130 248); --accent-soft: oklch(0.72 0.130 248 / 0.14); --accent-line: oklch(0.72 0.130 248 / 0.40); }

/* ---- Reset ------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-body);
  background: var(--bg-0);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg, image-slot { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }

::selection { background: var(--accent-soft); color: var(--text); }

/* ---- Layout helpers --------------------------------------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-2);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}
.eyebrow::before {
  content: "";
  width: 1.6em; height: 1px;
  background: var(--accent-line);
}

/* ---- Buttons ---------------------------------------------- */
.btn {
  --pad-y: 0.82em;
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: var(--pad-y) 1.35em;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.96rem;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: transform .25s var(--ease), background .25s var(--ease),
              border-color .25s var(--ease), color .25s var(--ease);
  will-change: transform;
}
.btn:active { transform: translateY(1px) scale(0.99); }

.btn-primary { background: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 34px -12px var(--accent-line); }

.btn-ghost { border-color: var(--line); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--accent-line); background: var(--accent-soft); transform: translateY(-2px); }

.btn .arr { transition: transform .3s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

/* ---- Header ----------------------------------------------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center;
  transition: background .4s var(--ease), backdrop-filter .4s var(--ease),
              border-color .4s var(--ease), padding .4s var(--ease);
  border-bottom: 1px solid transparent;
  padding-block: 22px;
}
.nav.is-stuck {
  background: oklch(0.165 0.010 285 / 0.72);
  backdrop-filter: blur(16px) saturate(1.3);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  border-color: var(--line-soft);
  padding-block: 13px;
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: inline-flex; align-items: baseline; gap: 2px; font-family: var(--font-display); font-weight: 700; font-size: 1.06rem; letter-spacing: -0.01em; }
.brand .dot { color: var(--accent); }
.brand .tld { color: var(--text-2); font-weight: 600; }

.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a { font-size: 0.92rem; color: var(--text-1); position: relative; transition: color .2s; }
.nav-links a::after {
  content:""; position:absolute; left:0; right:100%; bottom:-4px; height:1px;
  background: var(--accent); transition: right .3s var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { right: 0; }
.nav-cta { display: flex; align-items: center; gap: 14px; }
@media (max-width: 760px) { .nav-links { display: none; } }

/* ---- Hero ------------------------------------------------- */
.hero { position: relative; padding-top: clamp(140px, 20vh, 220px); padding-bottom: clamp(70px, 11vw, 140px); overflow: clip; }

.hero-glow { position: absolute; inset: 0; z-index: 0; pointer-events: none; overflow: clip; }
.hero-glow span {
  position: absolute; border-radius: 50%;
  filter: blur(70px); opacity: 0.5;
}
.hero-glow .g1 { width: 46vw; height: 46vw; left: -8vw; top: -14vw; background: radial-gradient(circle, var(--accent) 0%, transparent 66%); opacity: 0.34; }
.hero-glow .g2 { width: 38vw; height: 38vw; right: -6vw; top: 14vw; background: radial-gradient(circle, var(--warm) 0%, transparent 66%); opacity: 0.22; }
:root[data-anim="lively"] .hero-glow .g1 { animation: drift1 18s ease-in-out infinite alternate; }
:root[data-anim="lively"] .hero-glow .g2 { animation: drift2 22s ease-in-out infinite alternate; }
:root[data-glow="off"] .hero-glow { display: none; }
@keyframes drift1 { to { transform: translate(7vw, 5vw) scale(1.12); } }
@keyframes drift2 { to { transform: translate(-6vw, -4vw) scale(1.1); } }

.hero-grid {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 10%, transparent 75%);
          mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 10%, transparent 75%);
  opacity: 0.5;
}

.hero .wrap { position: relative; z-index: 1; }
.hero-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(32px, 6vw, 76px);
  align-items: center;
}

.status {
  display: inline-flex; align-items: center; gap: 0.6em;
  font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.06em;
  color: var(--text-1);
  padding: 0.5em 0.9em; border: 1px solid var(--line); border-radius: 999px;
  background: var(--bg-1);
}
.status .led { width: 8px; height: 8px; border-radius: 50%; background: var(--warm); box-shadow: 0 0 0 0 var(--warm); }
:root:not([data-anim="off"]) .status .led { animation: pulse 2.4s var(--ease) infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 oklch(0.78 0.115 66 / 0.55); }
  70% { box-shadow: 0 0 0 10px oklch(0.78 0.115 66 / 0); }
  100% { box-shadow: 0 0 0 0 oklch(0.78 0.115 66 / 0); }
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 6.2vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin-top: 26px;
  text-wrap: balance;
}
.hero h1 .accent { color: var(--accent); }
.hero h1 em { font-style: italic; color: var(--text-1); font-weight: 600; }

.hero-sub {
  font-size: clamp(1.05rem, 1.4vw, 1.22rem);
  color: var(--text-1);
  max-width: 34ch;
  margin-top: 26px;
  text-wrap: pretty;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

/* portrait */
.hero-portrait { position: relative; }
.hero-portrait .frame {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 10px;
  background: linear-gradient(160deg, var(--bg-1), var(--bg-0));
  box-shadow: 0 40px 80px -40px oklch(0 0 0 / 0.7);
}
.hero-portrait image-slot { width: 100%; aspect-ratio: 4/5; }
.hero-portrait .tag {
  position: absolute; left: 22px; bottom: 22px; z-index: 3;
  display: inline-flex; flex-direction: column; gap: 2px;
  padding: 10px 14px; border-radius: var(--r-sm);
  background: oklch(0.165 0.010 285 / 0.78); backdrop-filter: blur(8px);
  border: 1px solid var(--line-soft);
}
.hero-portrait .tag b { font-family: var(--font-display); font-size: 0.96rem; }
.hero-portrait .tag span { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-2); letter-spacing: 0.04em; }
.hero-portrait .ping {
  position: absolute; right: -10px; top: 26px; z-index: 3;
  font-family: var(--font-mono); font-size: 0.66rem; color: var(--accent-ink);
  background: var(--accent); padding: 6px 11px; border-radius: 999px; font-weight: 600;
  box-shadow: 0 10px 24px -10px var(--accent-line);
}

/* hero meta row */
.hero-meta {
  margin-top: clamp(48px, 7vw, 84px);
  display: flex; flex-wrap: wrap; align-items: center; gap: clamp(18px, 4vw, 44px);
  padding-top: 30px; border-top: 1px solid var(--line-soft);
}
.hero-meta .lab { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-2); }
.hero-meta .stack { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-1);
  border: 1px solid var(--line); border-radius: 999px; padding: 6px 13px;
  transition: border-color .25s, color .25s, background .25s;
}
.chip:hover { border-color: var(--accent-line); color: var(--text); background: var(--accent-soft); }

/* hero layout variants (Tweaks) */
:root[data-hero="centered"] .hero-layout { grid-template-columns: 1fr; text-align: center; justify-items: center; max-width: 880px; margin-inline: auto; }
:root[data-hero="centered"] .hero-sub { max-width: 50ch; }
:root[data-hero="centered"] .hero-portrait { display: none; }
:root[data-hero="centered"] .hero-actions { justify-content: center; }

@media (max-width: 880px) {
  .hero-layout { grid-template-columns: 1fr; }
  .hero-portrait { max-width: 420px; }
}

/* ---- Section scaffolding ---------------------------------- */
.section { padding-block: clamp(72px, 11vw, 138px); position: relative; }
.section-head { max-width: 760px; }
.section-head h2 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(2rem, 4.4vw, 3.2rem); line-height: 1.05; letter-spacing: -0.02em;
  margin-top: 20px; text-wrap: balance;
}
.section-head p { color: var(--text-1); font-size: clamp(1.02rem, 1.3vw, 1.16rem); margin-top: 18px; max-width: 56ch; text-wrap: pretty; }

/* ---- Servizi ---------------------------------------------- */
.svc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: clamp(40px, 6vw, 64px); }
:root[data-svc="list"] .svc-grid { grid-template-columns: 1fr; }
@media (max-width: 720px) { .svc-grid { grid-template-columns: 1fr; } }

.svc {
  position: relative; overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(170deg, var(--bg-1), var(--bg-0) 90%);
  padding: clamp(26px, 3vw, 38px);
  display: flex; flex-direction: column; gap: 16px;
  transition: border-color .35s var(--ease), transform .35s var(--ease), background .35s var(--ease);
}
:root[data-svc="list"] .svc { flex-direction: row; align-items: flex-start; gap: clamp(20px, 4vw, 48px); }
:root[data-svc="list"] .svc .svc-body { flex: 1; }
.svc::after {
  content:""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(420px 200px at var(--mx, 50%) 0%, var(--accent-soft), transparent 70%);
  opacity: 0; transition: opacity .4s var(--ease);
}
.svc:hover { transform: translateY(-4px); border-color: var(--accent-line); }
.svc:hover::after { opacity: 1; }

.svc-top { display: flex; align-items: center; justify-content: space-between; }
.svc-num { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.1em; color: var(--text-2); }
.svc-mark {
  width: 46px; height: 46px; border-radius: 12px; flex: none;
  display: grid; place-items: center;
  border: 1px solid var(--line); background: var(--bg-2);
  color: var(--accent);
  transition: border-color .35s, background .35s, transform .35s var(--ease);
}
.svc:hover .svc-mark { border-color: var(--accent-line); background: var(--accent-soft); transform: rotate(-6deg); }
.svc-mark svg { width: 22px; height: 22px; }

.svc h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.32rem; letter-spacing: -0.01em; }
.svc p { color: var(--text-1); font-size: 0.98rem; text-wrap: pretty; }
.svc .svc-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 2px; }
.svc .svc-tags span { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-2); border: 1px solid var(--line-soft); border-radius: 6px; padding: 3px 8px; }

/* ---- Approccio (mini, qualitativo) ------------------------ */
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(20px, 3vw, 40px); margin-top: clamp(40px, 6vw, 60px); }
@media (max-width: 720px) { .values { grid-template-columns: 1fr; gap: 28px; } }
.value { border-top: 1px solid var(--line); padding-top: 20px; }
.value b { font-family: var(--font-display); font-size: 1.1rem; display: block; margin-bottom: 8px; }
.value p { color: var(--text-1); font-size: 0.95rem; text-wrap: pretty; }
.value .k { font-family: var(--font-mono); font-size: 0.72rem; color: var(--accent); letter-spacing: 0.08em; }

/* ---- Contatti --------------------------------------------- */
.contact { position: relative; }
.contact-card {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(700px 300px at 12% -10%, var(--accent-soft), transparent 60%),
    linear-gradient(170deg, var(--bg-1), var(--bg-0));
  padding: clamp(30px, 5vw, 64px);
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(34px, 5vw, 72px);
  align-items: start;
}
@media (max-width: 820px) { .contact-card { grid-template-columns: 1fr; gap: 36px; } }

.contact-card h2 { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.9rem, 3.6vw, 2.8rem); line-height: 1.05; letter-spacing: -0.02em; text-wrap: balance; }
.contact-card .lead { color: var(--text-1); margin-top: 18px; font-size: 1.08rem; max-width: 38ch; text-wrap: pretty; }
.contact-direct { margin-top: 30px; display: flex; flex-direction: column; gap: 14px; }
.contact-direct a { display: inline-flex; align-items: center; gap: 12px; color: var(--text); font-size: 1.02rem; width: max-content; }
.contact-direct a .ic { width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line); display: grid; place-items: center; color: var(--accent); transition: border-color .25s, background .25s; }
.contact-direct a:hover .ic { border-color: var(--accent-line); background: var(--accent-soft); }
.contact-direct a small { display:block; font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-2); letter-spacing: 0.04em; }

/* form */
.form { display: flex; flex-direction: column; gap: 16px; }
.field { position: relative; display: flex; flex-direction: column; gap: 7px; }
.field label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-2); }
.field input, .field textarea {
  font: inherit; font-size: 0.98rem; color: var(--text);
  background: var(--bg-0); border: 1px solid var(--line); border-radius: var(--r-sm);
  padding: 13px 15px; width: 100%; resize: vertical;
  transition: border-color .2s, background .2s, box-shadow .2s;
}
.field textarea { min-height: 104px; }
.field input::placeholder, .field textarea::placeholder { color: var(--text-2); }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent-line); box-shadow: 0 0 0 3px var(--accent-soft); }
.field.invalid input, .field.invalid textarea { border-color: oklch(0.66 0.16 25); box-shadow: 0 0 0 3px oklch(0.66 0.16 25 / 0.14); }
.field .err { font-size: 0.78rem; color: oklch(0.74 0.14 25); min-height: 0; opacity: 0; transform: translateY(-3px); transition: opacity .2s, transform .2s; }
.field.invalid .err { opacity: 1; transform: none; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 460px) { .form-row { grid-template-columns: 1fr; } }
.form .btn-primary { justify-content: center; margin-top: 4px; }

.form-success {
  display: none;
  flex-direction: column; align-items: flex-start; gap: 14px;
  padding: 6px 2px;
}
.form.is-sent .field, .form.is-sent .form-row, .form.is-sent > .btn-primary, .form.is-sent .form-note { display: none; }
.form.is-sent .form-success { display: flex; animation: rise .5s var(--ease) both; }
.form-success .ok { width: 52px; height: 52px; border-radius: 50%; background: var(--accent-soft); border: 1px solid var(--accent-line); display: grid; place-items: center; color: var(--accent); }
.form-success h4 { font-family: var(--font-display); font-size: 1.3rem; }
.form-success p { color: var(--text-1); }
.form-note { font-size: 0.78rem; color: var(--text-2); margin-top: 2px; }
.form-error {
  display: none; margin-top: 12px; font-size: 0.86rem;
  color: oklch(0.78 0.13 25);
  background: oklch(0.66 0.16 25 / 0.10); border: 1px solid oklch(0.66 0.16 25 / 0.35);
  border-radius: var(--r-sm); padding: 11px 14px;
}

/* ---- Footer ----------------------------------------------- */
.footer { border-top: 1px solid var(--line-soft); padding-block: 40px; }
.footer .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.footer .muted { color: var(--text-2); font-size: 0.86rem; }
.footer .links { display: flex; gap: 22px; }
.footer .links a { color: var(--text-1); font-size: 0.88rem; transition: color .2s; }
.footer .links a:hover { color: var(--text); }

/* ---- Reveal animations ------------------------------------
   Stato base = VISIBILE. La fase nascosta si attiva solo quando
   <html> ha .reveal-on (aggiunto via JS se la pagina è visibile e
   il movimento è consentito). Così screenshot/print/reduced-motion
   mostrano sempre il contenuto. */
.reveal-on [data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal-on [data-reveal].in { opacity: 1; transform: none; }
.reveal-on [data-reveal][data-delay="1"] { transition-delay: .08s; }
.reveal-on [data-reveal][data-delay="2"] { transition-delay: .16s; }
.reveal-on [data-reveal][data-delay="3"] { transition-delay: .24s; }
.reveal-on [data-reveal][data-delay="4"] { transition-delay: .32s; }
:root[data-anim="off"] [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
@keyframes rise { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
  .status .led, .hero-glow span { animation: none !important; }
}

/* ============================================================
   Aggiunte di PRODUZIONE
   ============================================================ */

/* Logo con marchio (nav + footer) */
.brand { align-items: center; gap: 9px; }
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand-text { display: inline-flex; align-items: baseline; gap: 2px; }
.footer .brand-mark { width: 26px; height: 26px; }

/* Foto reale dell'hero (sostituisce l'image-slot del prototipo) */
.hero-portrait .frame .portrait-img {
  width: 100%; aspect-ratio: 4/5; object-fit: cover; object-position: center 28%;
  border-radius: 16px; display: block;
}

/* Consenso privacy (GDPR) */
.consent { display: flex; gap: 11px; align-items: flex-start; }
.consent input[type="checkbox"] {
  width: 18px; height: 18px; margin-top: 2px; flex: none;
  accent-color: var(--accent); cursor: pointer;
}
.consent label {
  font-family: var(--font-body); font-size: 0.84rem; line-height: 1.5;
  letter-spacing: 0; text-transform: none; color: var(--text-2);
}
.consent label a { color: var(--text-1); text-decoration: underline; text-underline-offset: 2px; }
.consent label a:hover { color: var(--text); }
.field.invalid .consent input[type="checkbox"] { outline: 2px solid oklch(0.66 0.16 25); outline-offset: 2px; border-radius: 4px; }