/* =========================================================
   Davide Manea — AI Strategy & Implementation Partner
   Static landing page
   ========================================================= */

/* -------- Tokens -------- */
:root {
  --bg:            #f6f3ee;
  --bg-elevated:   #fbf9f5;
  --bg-card:       #ffffff;
  --ink:           #10131a;
  --ink-2:         #2b3140;
  --ink-3:         #4a5160;
  --ink-4:         #6f7686;
  --rule:          rgba(16, 19, 26, 0.10);
  --rule-strong:   rgba(16, 19, 26, 0.18);
  --accent:        #1f3b4d;        /* petrol / graphite blue */
  --accent-ink:    #f6f3ee;
  --accent-soft:   #e9eef1;
  --warn:          #8a5a2b;

  --radius-s: 6px;
  --radius:   10px;
  --radius-l: 14px;

  --shadow-1: 0 1px 0 rgba(16,19,26,0.04), 0 1px 2px rgba(16,19,26,0.04);
  --shadow-2: 0 1px 0 rgba(16,19,26,0.05), 0 8px 24px -12px rgba(16,19,26,0.12);

  --font-sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --max-w: 1180px;
  --gutter: clamp(20px, 4vw, 40px);

  --step-base: 1rem;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-feature-settings: "ss01", "cv11";
}

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

/* -------- Layout helpers -------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(72px, 9vw, 128px);
  position: relative;
}
.section + .section { border-top: 1px solid var(--rule); }

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: end;
  margin-bottom: clamp(40px, 5vw, 72px);
}
@media (max-width: 760px) {
  .section-head { grid-template-columns: 1fr; gap: 16px; }
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-4);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 1px;
  background: var(--ink-4);
}

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  color: var(--ink);
  letter-spacing: -0.015em;
  font-weight: 500;
  margin: 0;
  text-wrap: balance;
}
h2 {
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}
h3 {
  font-size: 18px;
  line-height: 1.3;
  font-weight: 500;
  letter-spacing: -0.01em;
}
p { margin: 0; }
.lede {
  font-size: clamp(17px, 1.4vw, 19px);
  color: var(--ink-3);
  line-height: 1.55;
  max-width: 60ch;
  text-wrap: pretty;
}

/* -------- Header / nav -------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, background .2s ease;
}
.site-header.is-scrolled {
  border-bottom-color: var(--rule);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 500;
  letter-spacing: -0.005em;
}
.brand-mark {
  width: 22px;
  height: 22px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  position: relative;
  display: inline-block;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  background: var(--ink);
  border-radius: 1px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 32px);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  text-decoration: none;
  color: var(--ink-3);
  font-size: 14.5px;
  transition: color .15s ease;
}
.nav-links a:hover { color: var(--ink); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  transition: background .15s ease, transform .15s ease;
}
.nav-cta:hover { background: var(--accent); }
.nav-cta::after {
  content: "→";
  display: inline-block;
  transition: transform .15s ease;
}
.nav-cta:hover::after { transform: translateX(2px); }

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
  color: var(--ink);
}
.menu-toggle svg { width: 22px; height: 22px; }

@media (max-width: 760px) {
  .nav-links, .nav-cta { display: none; }
  .menu-toggle { display: inline-flex; }
  .nav-links.is-open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    padding: 16px var(--gutter) 24px;
    background: var(--bg);
    border-bottom: 1px solid var(--rule);
    gap: 14px;
  }
  .nav-links.is-open + .nav-cta { display: none; }
}

/* -------- Hero -------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(80px, 10vw, 140px) clamp(72px, 9vw, 120px);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}
.hero-tag .dot {
  width: 7px; height: 7px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
  position: relative;
}
.hero-tag .dot::after {
  content:"";
  position: absolute;
  inset: -3px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  opacity: .25;
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0% { transform: scale(.6); opacity: .55; }
  100% { transform: scale(1.8); opacity: 0; }
}

.hero h1 {
  font-size: clamp(38px, 5.4vw, 68px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.02;
  margin-bottom: 24px;
}
.hero h1 .accent {
  color: var(--accent);
}
.hero-claim {
  font-size: clamp(18px, 1.6vw, 21px);
  color: var(--ink-2);
  max-width: 30ch;
  line-height: 1.45;
  margin-bottom: 16px;
  text-wrap: pretty;
}
.hero-sub {
  font-size: 15.5px;
  color: var(--ink-3);
  max-width: 56ch;
  line-height: 1.55;
  margin-bottom: 36px;
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease, transform .15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--ink);
  color: var(--bg);
}
.btn-primary:hover { background: var(--accent); }
.btn-primary::after {
  content: "→";
  transition: transform .2s ease;
}
.btn-primary:hover::after { transform: translateX(3px); }

.btn-ghost {
  background: transparent;
  color: var(--ink-2);
  border-color: var(--rule-strong);
}
.btn-ghost:hover {
  color: var(--ink);
  border-color: var(--ink);
}

/* Hero portrait module */
.hero-portrait {
  position: relative;
}
.hero-portrait figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.hero-portrait-frame {
  position: relative;
  border-radius: 0;
  overflow: visible;
  background: transparent;
  aspect-ratio: 1 / 1;
}
.hero-portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform .8s cubic-bezier(.2,.7,.2,1);
}
.hero-portrait:hover .hero-portrait-frame img {
  transform: scale(1.015);
}
.hero-portrait figcaption {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
}
.hero-portrait-name {
  font-size: 15px;
  color: var(--ink);
  font-weight: 500;
  letter-spacing: -0.005em;
}
.hero-portrait-role {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--ink-4);
  text-transform: uppercase;
}
@media (max-width: 900px) {
  .hero-portrait {
    max-width: 360px;
  }
}

/* Decorative grid + line for the hero */
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--rule) 1px, transparent 1px),
    linear-gradient(to bottom, var(--rule) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
  opacity: .55;
}
.hero-bg .ruler {
  position: absolute;
  top: 40%;
  left: 0; right: 0;
  height: 1px;
  background: var(--rule-strong);
  opacity: 0;
  animation: ruler-in 1.2s .2s cubic-bezier(.2,.7,.2,1) forwards;
  transform-origin: left center;
}
@keyframes ruler-in {
  from { transform: scaleX(0); opacity: 0; }
  to   { transform: scaleX(1); opacity: 1; }
}
.hero > .container { position: relative; z-index: 1; }

/* -------- Marquee / strip of keywords (sober) -------- */
.strip {
  border-block: 1px solid var(--rule);
  background: var(--bg-elevated);
  padding-block: 14px;
  overflow: hidden;
}
.strip-inner {
  display: flex;
  gap: 48px;
  white-space: nowrap;
  animation: strip 38s linear infinite;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-4);
  text-transform: uppercase;
}
.strip-inner span {
  display: inline-flex;
  align-items: center;
  gap: 48px;
}
.strip-inner span::after {
  content: "·";
  color: var(--ink-4);
  opacity: .5;
}
@keyframes strip {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* -------- Generic card grids -------- */
.grid {
  display: grid;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: var(--radius-l);
  overflow: hidden;
}
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 620px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--bg-elevated);
  padding: clamp(22px, 2.4vw, 30px);
  position: relative;
  transition: background .2s ease;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 100%;
}
.card:hover { background: var(--bg-card); }
.card-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-4);
  letter-spacing: 0.08em;
}
.card h3 {
  font-size: 17.5px;
  letter-spacing: -0.005em;
}
.card p {
  font-size: 14.5px;
  color: var(--ink-3);
  line-height: 1.55;
  text-wrap: pretty;
}

/* -------- Process timeline -------- */
.process {
  display: grid;
  grid-template-columns: minmax(0, 280px) 1fr;
  gap: clamp(32px, 4vw, 64px);
}
@media (max-width: 900px) {
  .process { grid-template-columns: 1fr; }
}
.process-aside {
  position: sticky;
  top: 96px;
  align-self: start;
}
@media (max-width: 900px) {
  .process-aside { position: static; }
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.steps::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--rule);
}
.step {
  position: relative;
  padding: 18px 0 28px 72px;
  border-bottom: 1px dashed var(--rule);
}
.step:last-child { border-bottom: 0; }

.step-no {
  position: absolute;
  left: 0;
  top: 18px;
  width: 56px;
  height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--rule-strong);
  border-radius: 50%;
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
}
.step h3 {
  font-size: 18px;
  margin-bottom: 8px;
}
.step p {
  font-size: 14.5px;
  color: var(--ink-3);
  line-height: 1.6;
  max-width: 64ch;
  text-wrap: pretty;
}

/* -------- For whom (target) -------- */
.targets {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: var(--radius-l);
  overflow: hidden;
}
@media (max-width: 760px) { .targets { grid-template-columns: 1fr; } }
.target {
  background: var(--bg-elevated);
  padding: clamp(22px, 2.4vw, 32px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background .2s ease;
}
.target:hover { background: var(--bg-card); }
.target-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-4);
  text-transform: uppercase;
}
.target h3 {
  font-size: 19px;
  letter-spacing: -0.01em;
}
.target p {
  font-size: 14.5px;
  color: var(--ink-3);
  text-wrap: pretty;
}

/* -------- Value (Cosa porto) -------- */
.value-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}
@media (max-width: 760px) { .value-grid { grid-template-columns: 1fr; } }
.value {
  border: 1px solid var(--rule);
  border-radius: var(--radius-l);
  background: var(--bg-elevated);
  padding: clamp(22px, 2.4vw, 30px);
  transition: border-color .2s ease, transform .2s ease;
}
.value:hover { border-color: var(--ink); }
.value-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.value h3 {
  font-size: 19px;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.value p {
  font-size: 14.5px;
  color: var(--ink-3);
  text-wrap: pretty;
}

/* -------- Modes of collaboration (priced-like layout, no prices) -------- */
.modes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
@media (max-width: 760px) { .modes { grid-template-columns: 1fr; } }
.mode {
  background: var(--bg-elevated);
  border: 1px solid var(--rule);
  border-radius: var(--radius-l);
  padding: clamp(24px, 2.6vw, 32px);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.mode-tag {
  position: absolute;
  top: 18px;
  right: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-4);
}
.mode h3 {
  font-size: 21px;
  letter-spacing: -0.01em;
}
.mode p {
  font-size: 14.5px;
  color: var(--ink-3);
  text-wrap: pretty;
}
.mode-meta {
  margin-top: 4px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--ink-2);
  padding: 4px 9px;
  border: 1px solid var(--rule-strong);
  border-radius: 4px;
  background: var(--bg);
}

/* -------- CTA final -------- */
.cta {
  border-top: 1px solid var(--rule);
  background: var(--ink);
  color: #ECE9E2;
  padding-block: clamp(80px, 10vw, 128px);
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000, transparent 80%);
  pointer-events: none;
}
.cta .container { position: relative; }
.cta-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: end;
}
@media (max-width: 900px) { .cta-grid { grid-template-columns: 1fr; } }
.cta h2 {
  color: #fff;
  font-size: clamp(28px, 3.4vw, 42px);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 18px;
  max-width: 22ch;
}
.cta p {
  color: rgba(255,255,255,.7);
  font-size: 16.5px;
  max-width: 56ch;
  text-wrap: pretty;
}
.cta-actions {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.cta .btn-primary {
  background: var(--bg);
  color: var(--ink);
}
.cta .btn-primary:hover { background: #fff; }
.cta .btn-ghost {
  color: rgba(255,255,255,.85);
  border-color: rgba(255,255,255,.25);
}
.cta .btn-ghost:hover {
  color: #fff;
  border-color: #fff;
}

/* -------- Footer -------- */
.site-footer {
  background: var(--ink);
  color: rgba(255,255,255,.65);
  padding-block: 28px 32px;
  font-size: 13px;
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 28px;
}
.site-footer a {
  color: rgba(255,255,255,.85);
  text-decoration: none;
}
.site-footer a:hover { text-decoration: underline; }
.footer-meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,.5);
  text-transform: uppercase;
}

/* -------- Reveal -------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-bg .ruler { animation: none; opacity: 1; transform: none; }
  .hero-tag .dot::after { animation: none; }
  .strip-inner { animation: none; }
}

/* =========================================================
   contact.html / vCard page
   ========================================================= */

.vcard-shell {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 32px 20px;
}
.vcard {
  width: 100%;
  max-width: 420px;
  background: var(--bg-elevated);
  border: 1px solid var(--rule);
  border-radius: 18px;
  padding: 28px 24px 24px;
  box-shadow: var(--shadow-2);
  text-align: center;
}
.vcard .crest {
  width: 44px;
  height: 44px;
  border: 1px solid var(--ink);
  border-radius: 8px;
  margin: 0 auto 18px;
  position: relative;
}
.vcard .crest::after {
  content: "";
  position: absolute;
  inset: 7px;
  background: var(--ink);
  border-radius: 2px;
}
.vcard .name {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}
.vcard .role {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-4);
  margin-bottom: 22px;
}
.qr-wrap {
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 16px;
  display: inline-block;
  margin: 4px auto 20px;
}
#qrcode {
  width: 240px;
  height: 240px;
  display: block;
}
#qrcode canvas, #qrcode img {
  width: 240px !important;
  height: 240px !important;
}
.vcard-details {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  text-align: left;
  border-top: 1px solid var(--rule);
}
.vcard-details li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--rule);
  font-size: 14px;
}
.vcard-details li .k {
  color: var(--ink-4);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.vcard-details li .v {
  color: var(--ink);
  text-align: right;
  word-break: break-all;
}
.vcard-details li .v a { text-decoration: none; }
.vcard-details li .v a:hover { text-decoration: underline; }

.vcard .btn-save {
  width: 100%;
  justify-content: center;
}

.vcard .foot {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-4);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}