/* ============================================================
   Athenite — design system
   marble white · charcoal · gradient gold
   Marcellus (display) · IBM Plex Sans (body) · IBM Plex Mono (annotation)
   ============================================================ */

@font-face {
  font-family: 'Marcellus';
  src: url('/fonts/marcellus-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('/fonts/ibm-plex-sans-var.woff2') format('woff2');
  font-weight: 100 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('/fonts/ibm-plex-mono-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('/fonts/ibm-plex-mono-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

:root {
  --marble: #fbfaf6;
  --marble-2: #f3f1ea;
  --ink: #1d1f24;
  --ink-soft: #4d515a;
  --charcoal: #212329;
  --charcoal-deep: #17181d;
  --paper: #eceae3;
  --paper-soft: #a4a8b0;
  --gold-1: #f7e08a;
  --gold-2: #d4a437;
  --gold-3: #8a6114;
  --gold-text: #85601a;      /* gold for text on marble (contrast-safe) */
  --gold-dark: #e0c168;      /* gold for text on charcoal */
  --line: rgba(29, 31, 36, 0.16);
  --line-faint: rgba(29, 31, 36, 0.08);
  --line-dark: rgba(236, 234, 227, 0.18);
  --line-dark-faint: rgba(236, 234, 227, 0.08);
  --grad-gold: linear-gradient(135deg, #f7e08a 0%, #d4a437 48%, #8a6114 100%);
  --grad-gold-soft: linear-gradient(135deg, #f2dc8d 0%, #d4a437 60%, #a97e22 100%);
  --font-display: 'Marcellus', 'Times New Roman', serif;
  --font-body: 'IBM Plex Sans', -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --wrap: 72rem;
  --pad-x: clamp(1.25rem, 4vw, 2.5rem);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--marble);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--gold-2); outline-offset: 3px; }
::selection { background: #e9d495; color: var(--ink); }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--pad-x); }

/* ---------- type ---------- */

h1, h2, h3 { font-family: var(--font-display); font-weight: 400; line-height: 1.08; margin: 0; }
h1 { font-size: clamp(2.7rem, 6.2vw, 4.6rem); letter-spacing: -0.005em; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); letter-spacing: 0; }
h3 { font-size: 1.3rem; line-height: 1.3; }
p { margin: 0 0 1rem; }
.lede { font-size: clamp(1.02rem, 1.6vw, 1.18rem); color: var(--ink-soft); max-width: 38rem; }
.band-dark .lede { color: var(--paper-soft); }

/* dimension-line eyebrow: |——| ANNOTATION */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold-text);
  margin: 0 0 1.4rem;
}
.eyebrow::before {
  content: "";
  flex: none;
  width: 30px;
  height: 9px;
  border-left: 1px solid currentColor;
  border-right: 1px solid currentColor;
  background: linear-gradient(currentColor, currentColor) center / 100% 1px no-repeat;
  opacity: 0.85;
}
.band-dark .eyebrow { color: var(--gold-dark); }

.gold-grad {
  background: linear-gradient(135deg, #c3922b 0%, #8a6114 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.band-dark .gold-grad { background: var(--grad-gold-soft); -webkit-background-clip: text; background-clip: text; }

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 250, 246, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-faint);
}
.nav-in {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 0.85rem var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 1.5rem;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.06rem;
  letter-spacing: 0.22em;
  color: var(--ink);
}
.brand svg { display: block; }
.nav-links { display: flex; align-items: center; gap: clamp(1rem, 2.5vw, 2rem); }
.nav-links a {
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.nav-links a:hover { color: var(--ink); border-bottom-color: var(--gold-2); }
.nav-links a[aria-current="page"] { color: var(--gold-text); border-bottom-color: var(--gold-2); }

/* ---------- buttons & links ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.5rem;
  background: var(--ink);
  color: var(--marble);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  border: 1px solid var(--ink);
  transition: color 0.18s ease, background 0.18s ease;
}
.btn:hover { color: var(--gold-1); }
.btn svg { transition: transform 0.18s ease; }
.btn:hover svg { transform: translateX(3px); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn-ghost:hover { color: var(--gold-text); border-color: var(--gold-2); }

.band-dark .btn { background: var(--gold-2); border-color: var(--gold-2); color: var(--charcoal-deep); }
.band-dark .btn:hover { background: var(--gold-1); border-color: var(--gold-1); color: var(--charcoal-deep); }
.band-dark .btn-ghost { background: transparent; border-color: var(--line-dark); color: var(--paper); }
.band-dark .btn-ghost:hover { color: var(--gold-dark); border-color: var(--gold-2); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--gold-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.92rem;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
}
.link-arrow:hover { border-bottom-color: var(--gold-2); }
.link-arrow svg { transition: transform 0.18s ease; }
.link-arrow:hover svg { transform: translateX(3px); }
.band-dark .link-arrow { color: var(--gold-dark); }

/* ---------- sections ---------- */

.section { padding-block: clamp(4.25rem, 8.5vw, 7rem); }
.section-tight { padding-block: clamp(3rem, 6vw, 4.5rem); }
.band-dark { background: var(--charcoal); color: var(--paper); }
.band-tint { background: var(--marble-2); }
.section-head { max-width: 44rem; margin-bottom: clamp(2.25rem, 5vw, 3.5rem); }

.rule { border: 0; border-top: 1px solid var(--line-faint); margin: 0; }

/* ---------- hero ---------- */

.hero { position: relative; overflow: hidden; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding-block: clamp(4rem, 9vw, 7.5rem);
}
.hero-copy .eyebrow { margin-bottom: 1.8rem; }
.hero-copy h1 { margin-bottom: 1.5rem; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 1rem 1.75rem; margin-top: 2.25rem; }
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-plate { max-width: 26rem; }
}

/* the drafting plate — reserved slot for a future animated render */
.hero-plate { position: relative; }
.hero-plate svg { display: block; width: 100%; height: auto; }

/* ---------- stats band ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-left: 1px solid var(--line-dark);
}
.stat { padding: 0.4rem 1.5rem; border-right: 1px solid var(--line-dark); }
.stat .fig {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.4vw, 2.9rem);
  line-height: 1.1;
  background: var(--grad-gold-soft);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat .lab {
  display: block;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--paper-soft);
  text-transform: uppercase;
}
@media (max-width: 860px) {
  .stats { grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line-dark); }
  .stat { padding: 1.1rem 1.25rem; border-bottom: 1px solid var(--line-dark); }
}

/* ---------- cards ---------- */

.cards { display: grid; gap: 1.25rem; }
.cards-3 { grid-template-columns: repeat(3, 1fr); }
.cards-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 860px) { .cards-3, .cards-2 { grid-template-columns: 1fr; } }

.card {
  border: 1px solid var(--line);
  padding: 1.7rem 1.6rem 1.5rem;
  background: var(--marble);
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}
.card:hover {
  border-color: var(--gold-2);
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(29, 31, 36, 0.06);
}
.card h3 { margin-bottom: 0.6rem; }
.card p { margin: 0; font-size: 0.94rem; color: var(--ink-soft); }
.card .k {
  display: block;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold-text);
  margin-bottom: 0.9rem;
}
.band-dark .card { background: transparent; border-color: var(--line-dark); }
.band-dark .card p { color: var(--paper-soft); }
.band-dark .card:hover { box-shadow: none; border-color: var(--gold-2); }
.band-dark .card .k { color: var(--gold-dark); }

/* ---------- process steps (I · II · III) ---------- */

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }
.step { border-top: 1px solid var(--line); padding-top: 1.4rem; }
.step .num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  background: var(--grad-gold-soft);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.step h3 { margin: 0.55rem 0 0.6rem; }
.step p { margin: 0; font-size: 0.94rem; color: var(--ink-soft); }

.verdicts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 0.9rem;
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
}
.verdicts span { border: 1px solid var(--line); padding: 0.35rem 0.7rem; color: var(--ink-soft); }
.verdicts .ok { color: var(--gold-text); border-color: var(--gold-2); }

/* ---------- engineering strip ---------- */

.eng { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
@media (max-width: 860px) { .eng { grid-template-columns: 1fr; } }
.eng-item { border-left: 1px solid var(--line-dark); padding: 0.35rem 0 0.35rem 1.4rem; }
.eng-item .m {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--gold-dark);
}
.eng-item p { margin: 0.45rem 0 0; font-size: 0.92rem; color: var(--paper-soft); }

/* ---------- team ---------- */

.team { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
@media (max-width: 860px) { .team { grid-template-columns: 1fr; } }
.member { border: 1px solid var(--line); padding: 2.1rem 1.6rem 1.7rem; text-align: center; }
.medallion {
  width: 84px;
  height: 84px;
  margin: 0 auto 1.3rem;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--marble-2);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: 0.08em;
}
.medallion span {
  background: var(--grad-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.member h3 { font-size: 1.35rem; }
.member .role {
  display: block;
  margin: 0.5rem 0 0.75rem;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-text);
}
.member p { margin: 0; font-size: 0.92rem; color: var(--ink-soft); }

/* ---------- CTA band ---------- */

.cta-band { text-align: center; }
.cta-band h2 { margin-bottom: 1rem; }
.cta-band .lede { margin-inline: auto; }
.cta-band .hero-actions { justify-content: center; margin-top: 2rem; }

.mail-big {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.5vw, 2.9rem);
  text-decoration: none;
  background: linear-gradient(135deg, #c3922b 0%, #8a6114 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  border-bottom: 1px solid var(--gold-2);
  padding-bottom: 0.2rem;
}
.band-dark .mail-big { background: var(--grad-gold-soft); -webkit-background-clip: text; background-clip: text; }
.mail-big:hover { border-bottom-width: 2px; }

/* ---------- footer ---------- */

.footer {
  background: var(--charcoal-deep);
  color: var(--paper-soft);
  position: relative;
  font-size: 0.86rem;
}
/* the meander — the labyrinth motif's guaranteed appearance on every page */
.footer::before {
  content: "";
  display: block;
  height: 13px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='13'%3E%3Cpath d='M0 11.5 H11 V1.5 H2 V7.5 H7.5 V4.5' fill='none' stroke='%23d4a437' stroke-width='1'/%3E%3C/svg%3E");
  background-repeat: repeat-x;
  background-position: center;
  opacity: 0.5;
}
.footer-in {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 2.8rem var(--pad-x) 2.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem 3rem;
  align-items: flex-start;
  justify-content: space-between;
}
.footer .brand { color: var(--paper); }
.footer .tag { margin: 0.7rem 0 0; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.06em; color: var(--paper-soft); }
.footer-nav { display: flex; flex-direction: column; gap: 0.45rem; }
.footer-nav a, .footer a.mail { color: var(--paper-soft); text-decoration: none; transition: color 0.15s ease; }
.footer-nav a:hover, .footer a.mail:hover { color: var(--gold-dark); }
.footer .fine {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 0 var(--pad-x) 2.2rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: #7c8089;
}
.footer .col-k {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.65rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: #7c8089;
  margin: 0 0 0.8rem;
}

/* ---------- reveal on scroll ---------- */

.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: 0.08s; }
.reveal-d2 { transition-delay: 0.16s; }
.reveal-d3 { transition-delay: 0.24s; }

/* labyrinth draw-in (hero plate) */
.lab-draw path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: labdraw 1.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
.lab-draw path:nth-child(2) { animation-delay: 0.15s; }
.lab-draw path:nth-child(3) { animation-delay: 0.3s; }
.lab-draw path:nth-child(4) { animation-delay: 0.45s; }
.lab-draw path:nth-child(5) { animation-delay: 0.55s; }
.lab-draw path:nth-child(6) { animation-delay: 0.65s; }
.lab-draw path:nth-child(7) { animation-delay: 0.75s; }
.lab-draw path:nth-child(8) { animation-delay: 0.85s; }
@keyframes labdraw { to { stroke-dashoffset: 0; } }
.lab-cross { opacity: 0; animation: labfade 0.9s ease 1.5s forwards; }
@keyframes labfade { to { opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .lab-draw path { animation: none; stroke-dashoffset: 0; }
  .lab-cross { animation: none; opacity: 1; }
  .card:hover { transform: none; }
}