/* ============================================================
   VEMBERNO — visual system
   ink #100F0C · paper #C7C2AE · concrete #4B4A45 · rust #8B4632 · moss #5C6B57
   Display: "PT Serif" — body: "Work Sans" — case-file mono: "IBM Plex Mono"
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=PT+Serif:ital,wght@0,400;0,700;1,400&family=Work+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --ink: #100f0c;
  --ink-soft: #1c1a16;
  --paper: #c7c2ae;
  --paper-dim: #a7a292;
  --concrete: #4b4a45;
  --rust: #8b4632;
  --rust-bright: #a85a3f;
  --moss: #5c6b57;
  --line: rgba(199, 194, 174, 0.18);
  --max-w: 1180px;
  --gap: clamp(1.25rem, 3vw, 2.5rem);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: 'Work Sans', -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  position: relative;
}

/* film-grain overlay, fixed, cheap and non-photographic */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

h1, h2, h3 { font-family: 'PT Serif', Georgia, serif; font-weight: 700; margin: 0; color: var(--paper); }

a { color: inherit; }

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

.wrap { max-width: var(--max-w); margin: 0 auto; padding-inline: var(--gap); }

.mono { font-family: 'IBM Plex Mono', monospace; letter-spacing: 0.02em; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* focus visibility */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--rust-bright);
  outline-offset: 3px;
}

/* ---------------- header ---------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(16, 15, 12, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: 1.1rem;
}
.wordmark {
  font-family: 'PT Serif', serif;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--paper);
}
.wordmark span { color: var(--rust-bright); }

.site-nav { display: flex; align-items: center; gap: clamp(1rem, 2.5vw, 2.2rem); }
.site-nav a {
  text-decoration: none; color: var(--paper-dim); font-size: 0.92rem;
  transition: color 0.15s ease;
}
.site-nav a:hover { color: var(--paper); }

.lang-switch { display: flex; gap: 0.35rem; border-left: 1px solid var(--line); padding-left: 1rem; margin-left: 0.2rem; }
.lang-switch button {
  background: none; border: 1px solid transparent; color: var(--paper-dim);
  font-family: 'IBM Plex Mono', monospace; font-size: 0.78rem; cursor: pointer;
  padding: 0.2rem 0.45rem; border-radius: 2px;
}
.lang-switch button[aria-current="true"] {
  color: var(--ink); background: var(--paper); border-color: var(--paper);
}
.lang-switch button:hover:not([aria-current="true"]) { color: var(--paper); border-color: var(--line); }

.nav-toggle { display: none; }

/* ---------------- hero ---------------- */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: var(--gap);
  padding-block: clamp(3rem, 8vw, 6.5rem);
}
.hero-copy .kicker {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  color: var(--rust-bright);
  margin-bottom: 1.1rem;
}
.hero-copy h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  line-height: 1.08;
  max-width: 16ch;
}
.hero-copy p {
  margin-top: 1.4rem;
  max-width: 44ch;
  color: var(--paper-dim);
  font-size: 1.05rem;
}
.hero-actions { margin-top: 2rem; display: flex; gap: 1rem; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 0.75rem 1.4rem;
  text-decoration: none;
  font-size: 0.95rem;
  border-radius: 1px;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn-primary { background: var(--rust); color: var(--paper); border: 1px solid var(--rust); }
.btn-primary:hover { background: var(--rust-bright); border-color: var(--rust-bright); }
.btn-ghost { color: var(--paper); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--paper-dim); }

.hero-art { position: relative; }
.hero-art svg {
  width: 100%; height: auto;
  filter: saturate(0.9);
  clip-path: polygon(3% 0, 100% 0, 100% 97%, 0 100%);
}
.hero-art .frame-note {
  position: absolute; bottom: -1.6rem; right: 0.2rem;
  font-size: 0.72rem; color: var(--paper-dim); opacity: 0.7;
}

/* entrance: single orchestrated reveal on load, not per-section */
.hero-copy > * { opacity: 0; transform: translateY(10px); animation: reveal 0.7s ease forwards; }
.hero-copy .kicker { animation-delay: 0.05s; }
.hero-copy h1 { animation-delay: 0.15s; }
.hero-copy p { animation-delay: 0.3s; }
.hero-copy .hero-actions { animation-delay: 0.45s; }
@keyframes reveal { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .hero-copy > * { opacity: 1; transform: none; animation: none; }
}

/* ---------------- section shell ---------------- */
section { padding-block: clamp(3.5rem, 7vw, 6rem); border-bottom: 1px solid var(--line); }
.section-head { max-width: 60ch; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head .exhibit {
  font-family: 'IBM Plex Mono', monospace; font-size: 0.78rem; color: var(--rust-bright);
  display: block; margin-bottom: 0.7rem;
}
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.section-head p { color: var(--paper-dim); margin-top: 0.9rem; }

/* ---------------- method / pipeline ---------------- */
.pipeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}
.pipeline-step {
  padding: 1.6rem 1.4rem;
  border-right: 1px solid var(--line);
  position: relative;
}
.pipeline-step:last-child { border-right: none; }
.pipeline-step .num {
  font-family: 'IBM Plex Mono', monospace;
  color: var(--rust-bright);
  font-size: 0.85rem;
}
.pipeline-step h3 { font-size: 1.05rem; margin-top: 0.6rem; }
.pipeline-step p { color: var(--paper-dim); font-size: 0.92rem; margin-top: 0.5rem; }
.pipeline-step::after {
  content: "→";
  position: absolute; right: -0.7rem; top: 1.7rem;
  color: var(--paper-dim); font-size: 1rem;
}
.pipeline-step:last-child::after { content: none; }

@media (max-width: 860px) {
  .pipeline { grid-template-columns: 1fr; }
  .pipeline-step { border-right: none; border-bottom: 1px solid var(--line); }
  .pipeline-step::after { content: none; }
}

/* ---------------- principles list ---------------- */
.principles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.6rem var(--gap);
}
.principle h3 {
  font-size: 1rem;
  font-family: 'Work Sans', sans-serif;
  font-weight: 600;
  color: var(--paper);
  border-left: 2px solid var(--rust);
  padding-left: 0.8rem;
}
.principle p { color: var(--paper-dim); margin-top: 0.6rem; padding-left: 0.9rem; font-size: 0.95rem; }
@media (max-width: 700px) { .principles { grid-template-columns: 1fr; } }

/* ---------------- current case (dossier card) ---------------- */
.dossier {
  border: 1px solid var(--line);
  background: var(--ink-soft);
  display: grid;
  grid-template-columns: 1fr 1.3fr;
}
.dossier-meta {
  padding: 2rem;
  border-right: 1px solid var(--line);
}
.dossier-meta .stamp {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  color: var(--moss);
  border: 1px solid var(--moss);
  padding: 0.25rem 0.6rem;
  transform: rotate(-2deg);
  margin-bottom: 1.2rem;
}
.dossier-meta dl { font-family: 'IBM Plex Mono', monospace; font-size: 0.85rem; }
.dossier-meta dt { color: var(--paper-dim); margin-top: 0.9rem; }
.dossier-meta dd { margin: 0.15rem 0 0; color: var(--paper); }
.dossier-body { padding: 2rem; }
.dossier-body h3 { font-size: 1.4rem; margin-bottom: 0.9rem; }
.dossier-body p { color: var(--paper-dim); }
.dossier-body p + p { margin-top: 0.9rem; }

@media (max-width: 760px) {
  .dossier { grid-template-columns: 1fr; }
  .dossier-meta { border-right: none; border-bottom: 1px solid var(--line); }
}

/* ---------------- visual language ---------------- */
.divider-lamp { max-width: 220px; margin: 0 auto 2rem; opacity: 0.85; }
.style-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  margin-top: 2rem;
}
.style-col { border: 1px solid var(--line); padding: 1.6rem; }
.style-col h4 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  margin-bottom: 1rem;
}
.style-col.avoid h4 { color: var(--rust-bright); }
.style-col.seek h4 { color: var(--moss); }
.style-col ul { margin: 0; padding-left: 1.1rem; color: var(--paper-dim); font-size: 0.95rem; }
.style-col li + li { margin-top: 0.5rem; }
@media (max-width: 700px) { .style-compare { grid-template-columns: 1fr; } }

/* ---------------- contact / footer ---------------- */
.contact .wrap { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--gap); }
.contact h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); max-width: 18ch; }
.contact p { color: var(--paper-dim); margin-top: 1rem; max-width: 42ch; }
.contact-card {
  border: 1px solid var(--line);
  padding: 1.8rem;
  align-self: start;
}
.contact-card a.mail {
  display: inline-block; margin-top: 0.4rem;
  color: var(--rust-bright); text-decoration: none; font-size: 1.05rem;
  border-bottom: 1px solid transparent;
}
.contact-card a.mail:hover { border-color: var(--rust-bright); }
.contact-card .field { margin-top: 1.3rem; }
.contact-card .field:first-child { margin-top: 0; }
.contact-card dt { font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; color: var(--paper-dim); }
.contact-card dd { margin: 0.2rem 0 0; }

@media (max-width: 760px) { .contact .wrap { grid-template-columns: 1fr; } }

footer.site-footer {
  padding-block: 2rem;
  font-size: 0.85rem;
  color: var(--paper-dim);
}
footer.site-footer .wrap {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}

/* ---------------- nav toggle for small screens ---------------- */
@media (max-width: 780px) {
  .site-nav { position: fixed; inset: 4.2rem 0 auto 0; background: var(--ink);
    flex-direction: column; align-items: flex-start; padding: 1.2rem var(--gap) 1.8rem;
    border-bottom: 1px solid var(--line); transform: translateY(-8px); opacity: 0;
    pointer-events: none; transition: opacity 0.15s ease, transform 0.15s ease; }
  .site-nav.open { opacity: 1; transform: none; pointer-events: auto; }
  .site-nav a { padding: 0.5rem 0; }
  .lang-switch { border-left: none; padding-left: 0; margin-left: 0; padding-top: 0.6rem; border-top: 1px solid var(--line); width: 100%; }
  .nav-toggle {
    display: inline-flex; background: none; border: 1px solid var(--line); color: var(--paper);
    font-family: 'IBM Plex Mono', monospace; font-size: 0.78rem; padding: 0.4rem 0.6rem; cursor: pointer;
  }
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-art { order: -1; }
}