/* ================================================================
   GIORGIO MANFREDI — v4 Editorial Monolith
   Reference: Wallpaper* / ZHA / deep-tech portfolio
   ================================================================ */



/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { background: #151515; color: #fff; font-family: "Calibri", sans-serif; font-size: 16px; font-weight: 400; line-height: 1.6; overflow-x: hidden; }
img  { display: block; }

/* ── Tokens ───────────────────────────────────────────────── */
:root {
  --nav-h:    60px;
  --px:       clamp(24px, 6vw, 80px);
  --sec-py:   48px;
  --grey:     #b0b7c3;
  --grey-dim: #888;
  --display:  "Calibri", sans-serif;
}

/* ── NAV ──────────────────────────────────────────────────── */
nav {
  position: fixed; inset: 0 0 auto; z-index: 200;
  height: var(--nav-h);
  background: rgba(21,21,21,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  box-shadow: 0 1px 24px rgba(0,0,0,0.5);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 100%; padding: 0 var(--px);
}
.nav-logo {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 18px; font-weight: 200; font-style: italic;
  letter-spacing: .08em;
  text-transform: none; color: #fff; text-decoration: none;
}
.nav-links { display: flex; gap: clamp(18px,2.5vw,40px); list-style: none; }
.nav-links a {
  font-size: 13px; font-weight: 400; letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #a1a1aa; text-decoration: none; transition: color .18s;
}
.nav-links a:hover { color: #fff; }

/* Hamburger */
.hamburger {
  display: none; flex-direction: column; justify-content: center; align-items: center;
  width: 44px; height: 44px; background: none; border: none; cursor: pointer; gap: 5px;
}
.hamburger span {
  display: block; width: 20px; height: 1px; background: #fff;
  transition: transform .28s, opacity .2s; transform-origin: center;
}
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Mobile nav */
.nav-mobile {
  display: none; position: fixed; inset: 0; z-index: 190;
  background: #151515; flex-direction: column; justify-content: center;
  padding: 0 var(--px); gap: clamp(22px,4vw,38px);
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  font-size: clamp(26px,6vw,48px); font-weight: 300; letter-spacing: .05em;
  text-transform: uppercase;
  color: #777; text-decoration: none; transition: color .18s;
}
.nav-mobile a:hover { color: #fff; }

/* ── HERO — full-screen background portrait ──────────────── */
#hero {
  position: relative;
  display: flex; align-items: center; justify-content: center;
  min-height: 100svh;
  overflow: hidden;
}

/* Background image */
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
}
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center 20%;
  filter: grayscale(8%) contrast(1.04);
}

/* Dark overlay + vignette */
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background:
    /* deep darken */
    linear-gradient(180deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.35) 40%, rgba(0,0,0,0.55) 100%),
    /* vignette */
    radial-gradient(ellipse at center, transparent 40%, rgba(0,0,0,0.7) 100%);
}

/* Particle canvas */
#hero-particles {
  position: absolute; inset: 0; z-index: 2;
  width: 100%; height: 100%;
  pointer-events: none;
}

/* Centered text overlay */
.hero-content {
  position: relative; z-index: 3;
  text-align: center;
  padding: 0 var(--px);
  max-width: 860px;
}
.hero-eyebrow {
  font-family: var(--display);
  font-size: clamp(11px,1.2vw,14px); font-weight: 400; letter-spacing: .28em;
  text-transform: uppercase; color: rgba(255,255,255,0.6);
  margin-bottom: clamp(20px,3vw,36px);
}
.hero-name {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(42px,7.5vw,96px);
  font-weight: 200; font-style: italic;
  letter-spacing: .06em; line-height: 1;
  text-transform: none;
  margin-bottom: clamp(24px,3vw,40px);
}
.hero-intro {
  font-size: clamp(14px,1.3vw,17px); font-weight: 300;
  color: rgba(255,255,255,0.7); line-height: 1.85;
  max-width: 60ch; margin: 0 auto;
}

/* ── SECTION BASE (no borders — whitespace only) ───────────── */
.sec {
  padding: var(--sec-py) var(--px);
  max-width: 1800px;
  margin-left: auto;
  margin-right: auto;
  scroll-margin-top: calc(var(--nav-h) + 20px);
}

.sec-num {
  display: block;
  font-size: 13px; font-weight: 500; letter-spacing: .18em;
  text-transform: uppercase; color: #555;
  margin-bottom: 16px;
}
.sec-title {
  font-family: var(--display);
  font-size: clamp(24px,3vw,32px); font-weight: 400;
  letter-spacing: -.015em; line-height: 1.15;
  margin-bottom: clamp(24px,3vw,40px);
}

/* ── CARD base ─────────────────────────────────────────────── */
.card {
  background: #1c1c1c;
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 6px;
  padding: clamp(24px,3vw,36px);
  transition: border-color .25s ease, background .25s ease;
}
.card:hover {
  background: #1e1e1e;
  border-color: rgba(255,255,255,0.14);
}

/* ── 01 ABOUT — wide 50/50 grid ────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px,4vw,72px);
  align-items: start;
}
.about-header .sec-num  { margin-bottom: 20px; }
.about-header .sec-title {
  margin-bottom: 0;
  position: sticky; top: calc(var(--nav-h) + 24px);
  font-size: clamp(24px,3vw,32px);
  line-height: 1.2;
  letter-spacing: -.015em;
}
.about-body { }
.about-body p {
  font-size: 16px; font-weight: 400;
  line-height: 1.8; color: #c8cdd8;
  margin-bottom: 20px;
}
.about-body p:last-child { margin-bottom: 0; }

/* ── 02 PATENTS — timeline grid ────────────────────────────── */
.patents-list { display: flex; flex-direction: column; }
.patent-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: clamp(28px,3vw,48px);
  align-items: start;
  padding: clamp(28px,4vw,44px) 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.patent-item:first-child { border-top: none; padding-top: 0; }
.patent-period {
  font-size: 15px; font-weight: 500; letter-spacing: .08em;
  text-transform: uppercase; color: #999;
  font-variant-numeric: tabular-nums;
  padding-top: 4px;
}
.patent-content h4 {
  font-size: 20px; font-weight: 500;
  color: #fff; letter-spacing: -.01em; line-height: 1.3;
  margin-bottom: 10px;
}
.patent-content p { font-size: 16px; font-weight: 400; color: #b0b7c3; line-height: 1.75; }

/* ── 03 TECH-ART — card grid ───────────────────────────────── */
.techart-intro {
  font-size: 16px;
  font-family: "Calibri", sans-serif; font-style: normal; font-weight: 400;
  color: #b8bdc8; line-height: 1.75; max-width: 80ch;
  margin-bottom: clamp(32px,4vw,48px);
}
.techart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.techart-year {
  display: block; font-size: 13px; font-weight: 500;
  letter-spacing: .14em; text-transform: uppercase; color: #777;
  margin-bottom: 12px;
}
.techart-item h4 {
  font-size: 20px; font-weight: 500;
  font-family: var(--display); color: #fff;
  letter-spacing: -.01em; line-height: 1.25; margin-bottom: 10px;
}
.techart-item p { font-size: 16px; font-weight: 400; color: #b0b7c3; line-height: 1.75; margin-bottom: 16px; flex-grow: 1; }
.techart-item {
  display: flex; flex-direction: column;
}
.techart-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 500; letter-spacing: .12em;
  text-transform: uppercase; color: #666; text-decoration: none;
  margin-top: auto; opacity: .7; cursor: not-allowed;
}
.techart-link::after { content: "↗"; font-size: 11px; }

/* ── 04 VENTURES — card grid ───────────────────────────────── */
.venture-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 20px;
}
.venture-item { display: flex; flex-direction: column; }
.venture-label {
  display: block; font-size: 13px; font-weight: 500;
  letter-spacing: .16em; text-transform: uppercase; color: #777;
  margin-bottom: 14px;
}
.venture-item h3 {
  font-family: var(--display);
  font-size: 22px; font-weight: 500;
  letter-spacing: -.01em; line-height: 1.25; margin-bottom: 12px;
}
.venture-item h3 em { font-style: normal; font-family: var(--display); font-weight: 600; }
.venture-item p { font-size: 16px; font-weight: 400; color: #b0b7c3; line-height: 1.75; }

/* ── FOOTER ────────────────────────────────────────────────── */
footer {
  width: 100%;
  padding: 32px var(--px);
  border-top: 1px solid #2a2a2a;
  scroll-margin-top: calc(var(--nav-h) + 20px);
  margin-top: 64px;
}
.footer-inner {
  display: flex; align-items: center; justify-content: center;
  gap: 24px;
}
.footer-link {
  font-size: 24px; font-weight: 400;
  color: #9ca3af; text-decoration: none;
  transition: color .3s ease;
}
.footer-link:hover { color: #fff; }
.footer-sep { font-size: 24px; color: #444; user-select: none; }

/* ── Scroll animations ────────────────────────────────────── */
.fade-up { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ── RESPONSIVE ────────────────────────────────────────────── */

/* Tablet 768–1099px */
@media (max-width: 1099px) {
  .about-grid { grid-template-columns: 1fr; gap: clamp(24px,4vw,40px); }
  .about-header .sec-title { position: static; margin-bottom: clamp(24px,3vw,36px); }
  .venture-grid { grid-template-columns: 1fr; }
  .techart-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile < 768px */
@media (max-width: 767px) {
  :root { --px: 5vw; }

  .hamburger { display: flex; }
  .nav-links  { display: none; }

  #hero { min-height: 100svh; }
  .hero-name  { font-size: clamp(32px,10vw,56px); }

  .patent-item { grid-template-columns: 80px 1fr; gap: 16px; }
  .techart-grid { grid-template-columns: 1fr; }
  .venture-grid { grid-template-columns: 1fr; }

  .footer-inner { flex-direction: column; align-items: center; }
}

/* Ultrawide */
@media (min-width: 1600px) {
  :root { --px: 6vw; }
  .techart-grid { grid-template-columns: repeat(4, 1fr); }
}