/* ============================================================
   Atelier Stein — Swiss Modernism 2.0
   Archivo / Space Grotesk · Weiß, Schwarz, Gold
   ============================================================ */
:root {
  --bg: #ffffff;
  --fg: #171717;
  --muted: #6b6b6b;
  --line: #e5e5e5;
  --gold: #a16207;
  --font-display: "Archivo", system-ui, sans-serif;
  --font-body: "Space Grotesk", system-ui, sans-serif;
  --pad: clamp(1.25rem, 4vw, 4rem);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--fg); color: var(--bg); }

/* Vertical grid overlay */
.grid-overlay {
  position: fixed; inset: 0;
  pointer-events: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding-inline: var(--pad);
  z-index: 0;
}
.grid-overlay span { border-left: 1px solid rgba(23, 23, 23, 0.05); }
.grid-overlay span:last-child { border-right: 1px solid rgba(23, 23, 23, 0.05); }

/* Nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem var(--pad);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav__logo {
  font-family: var(--font-display);
  font-weight: 800; font-size: 1rem;
  text-transform: uppercase; letter-spacing: 0.04em;
}
.nav__logo span { font-weight: 300; }
.nav__links { display: flex; gap: 1.8rem; }
.nav__links a {
  font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--muted);
  transition: color 0.25s;
  padding: 0.4rem 0;
}
.nav__links a:hover { color: var(--fg); }
.nav__meta {
  font-size: 0.75rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted);
}

main { position: relative; z-index: 1; }

/* Hero */
.hero { padding: clamp(7rem, 16vh, 11rem) var(--pad) 0; }
.hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.4rem, 14vw, 12rem);
  line-height: 0.92;
  letter-spacing: -0.035em;
  text-transform: uppercase;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}
.hero__line { display: block; overflow: hidden; }
.hero__line > span { display: inline-block; }
.hero__line--indent { padding-left: clamp(2rem, 12vw, 12rem); }
.hero__line--accent { color: var(--gold); }
.hero__meta {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 2rem;
  align-items: end;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}
.hero__desc { max-width: 34rem; font-size: clamp(0.95rem, 1.4vw, 1.15rem); color: var(--muted); }
.hero__coords {
  display: flex; flex-direction: column; gap: 0.3rem;
  font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted);
  text-align: right;
}
.hero__img { overflow: hidden; margin-inline: calc(var(--pad) * -1); }
.hero__img img { width: 100%; height: clamp(320px, 72vh, 760px); object-fit: cover; }

/* Bar */
.bar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem var(--pad);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  flex-wrap: wrap;
}
.bar i { width: 6px; height: 6px; background: var(--gold); border-radius: 0; flex-shrink: 0; }

/* Section head */
.section-head {
  display: flex; align-items: baseline; gap: clamp(1rem, 4vw, 3rem);
  padding: clamp(3.5rem, 9vw, 7rem) var(--pad) clamp(2rem, 5vw, 3.5rem);
}
.section-head__num {
  font-family: var(--font-display);
  font-size: 0.85rem; font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.2em;
}
.section-head__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 6.5vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

/* Projects */
.project {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  padding: clamp(2rem, 5vw, 4rem) var(--pad);
  border-top: 1px solid var(--line);
  align-items: center;
}
.project--flip { grid-template-columns: 1fr 1.35fr; }
.project--flip .project__img { order: 2; }
.project--flip .project__info { order: 1; }
.project__img { overflow: hidden; aspect-ratio: 3 / 2; }
.project__img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.9s var(--ease);
}
.project:hover .project__img img { transform: scale(1.04); }
.project__year {
  font-size: 0.78rem; letter-spacing: 0.2em;
  color: var(--gold);
  font-family: var(--font-display); font-weight: 600;
}
.project__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 4.5vw, 3.4rem);
  letter-spacing: -0.02em;
  text-transform: uppercase;
  line-height: 1;
  margin: 0.6rem 0 0.4rem;
}
.project__cat {
  font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 1.1rem;
}
.project__text { color: var(--muted); max-width: 30rem; font-size: 0.95rem; }

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}
.stat {
  padding: clamp(1.8rem, 4vw, 3.2rem) var(--pad);
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 0.3rem;
}
.stat:last-child { border-right: 0; }
.stat__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.stat__label {
  font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--muted);
}

/* Ethos (dark section) */
.ethos {
  background: var(--fg);
  color: var(--bg);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}
.ethos .section-head__title { color: var(--bg); }
.ethos__text {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.5rem, 4vw, 3rem);
  line-height: 1.25;
  letter-spacing: -0.015em;
  max-width: 26ch;
  padding: 0 var(--pad) clamp(2.5rem, 6vw, 4.5rem);
}
.ethos__text .w { display: inline-block; opacity: 0.18; transition: opacity 0.3s linear; }
.ethos__img { overflow: hidden; margin: 0 var(--pad); }
.ethos__img img { width: 100%; height: clamp(300px, 60vh, 640px); object-fit: cover; }

/* Footer */
.footer { padding-bottom: clamp(2rem, 5vw, 3.5rem); }
.footer__mail {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 5vw, 3.6rem);
  letter-spacing: -0.02em;
  padding: 0 var(--pad) clamp(2.5rem, 6vw, 4rem);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 8px;
  text-decoration-color: var(--gold);
  transition: color 0.3s;
  word-break: break-all;
}
.footer__mail:hover { color: var(--gold); }
.footer__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding: 0 var(--pad) clamp(2.5rem, 6vw, 4rem);
}
.footer__grid h4 {
  font-family: var(--font-display);
  font-size: 0.78rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.18em;
  color: var(--gold);
  margin-bottom: 0.7rem;
}
.footer__grid p { color: var(--muted); font-size: 0.92rem; }
.footer__copy {
  padding: 1.4rem var(--pad) 0;
  border-top: 1px solid var(--line);
  font-size: 0.78rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.12em;
}

/* Focus */
a:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

/* Responsive */
@media (max-width: 860px) {
  .nav__meta { display: none; }
  .hero__meta { grid-template-columns: 1fr; }
  .hero__coords { text-align: left; flex-direction: row; gap: 1.2rem; flex-wrap: wrap; }
  .project, .project--flip { grid-template-columns: 1fr; }
  .project--flip .project__img { order: 0; }
  .project--flip .project__info { order: 1; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(2n) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .footer__grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .nav__links { gap: 1rem; }
  .nav__links a { font-size: 0.74rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}