/* =========================================================
   Substrate Bio — Landing page styles
   Adapted from the Substrate brand system (V1 paper variant).
   ========================================================= */

/* ---------- Webfonts ---------- */
@font-face {
  font-family: "Inter";
  src: url("fonts/Inter-VariableFont_opsz_wght.ttf") format("truetype-variations");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("fonts/Inter-Italic-VariableFont_opsz_wght.ttf") format("truetype-variations");
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/JetBrainsMono-VariableFont_wght.ttf") format("truetype-variations");
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/JetBrainsMono-Italic-VariableFont_wght.ttf") format("truetype-variations");
  font-weight: 100 800;
  font-style: italic;
  font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  --substrate-ink:        #121212;
  --substrate-paper:      #F8F6F2;
  --substrate-surface-1:  #E8E5E0;
  --substrate-mid-1:      #A8A39B;
  --substrate-mid-2:      #5A554E;
  --substrate-amber:      #B5651D;
  --substrate-amber-dark: #D4813D;

  --font-display: "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--substrate-paper);
  color: var(--substrate-ink);
  font-family: var(--font-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }

/* ---------- Shared atoms ---------- */
.eyebrow {
  font: 500 11px/1.2 var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--substrate-mid-2);
}

.diamond {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--substrate-amber);
  transform: rotate(45deg);
  vertical-align: middle;
}

.wm-svg, .mk-svg { display: block; width: 100%; height: auto; }
.wm-svg path { fill: currentColor; }

/* Ambient motion: 6s opacity breath on the binding-point diamonds in the wordmark.
   Indexes match path order in the inlined wordmark SVG. */
@keyframes binding-breath {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.55; }
}
.binding-pulse path:nth-child(7),
.binding-pulse path:nth-child(12) {
  animation: binding-breath 6s cubic-bezier(0.2, 0.6, 0.2, 1) infinite;
}

/* Mark ambient: subtle opacity drift. */
@keyframes mark-drift {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.86; }
}
.mark-drift { animation: mark-drift 8s cubic-bezier(0.2, 0.6, 0.2, 1) infinite; }

/* Page entry fade. */
@keyframes lp-fade-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in    { animation: lp-fade-in 320ms cubic-bezier(0.2, 0.6, 0.2, 1) both; }
.fade-in.d1 { animation-delay: 80ms; }
.fade-in.d2 { animation-delay: 160ms; }
.fade-in.d3 { animation-delay: 240ms; }

@media (prefers-reduced-motion: reduce) {
  .binding-pulse path,
  .mark-drift,
  .fade-in {
    animation: none !important;
  }
  .fade-in { transform: none; }
}

/* ---------- Form (shared) ---------- */
.form-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field label {
  font: 500 11px/1.2 var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--substrate-mid-2);
}
.field input,
.field textarea {
  font: 400 15px/1.5 var(--font-body);
  background: transparent;
  color: inherit;
  border: none;
  border-bottom: 1px solid var(--substrate-mid-1);
  padding: 8px 0 12px;
  border-radius: 0;
  outline: none;
  resize: none;
  transition: border-color 200ms cubic-bezier(0.2, 0.6, 0.2, 1);
  font-family: var(--font-body);
}
.field input:hover,
.field textarea:hover { border-bottom-color: var(--substrate-ink); }
.field input:focus,
.field textarea:focus { border-bottom-color: var(--substrate-amber); }
.field textarea { min-height: 96px; }

.btn-primary {
  font: 500 13px/1 var(--font-body);
  letter-spacing: 0.01em;
  background: var(--substrate-ink);
  color: var(--substrate-paper);
  border: none;
  padding: 16px 24px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 200ms cubic-bezier(0.2, 0.6, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.btn-primary:hover { background: var(--substrate-amber); }
.btn-primary:disabled { opacity: 0.6; cursor: default; }
.btn-primary .arrow { font-family: var(--font-mono); font-weight: 500; }

/* Honeypot — visually hidden, still rendered so bots fill it. */
.hp {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Inline form status message. */
.form-status {
  font: 400 13px/1.5 var(--font-body);
  margin: 16px 0 0;
  color: var(--substrate-mid-2);
}
.form-status[data-state="error"] { color: var(--substrate-amber); }

/* ---------- Layout: V1 (Restrained / paper) ---------- */
.lp { width: 100%; min-height: 100vh; position: relative; }

.v1-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 32px 64px;
  gap: 32px;
}
.v1-nav .lockup { width: 140px; color: var(--substrate-ink); }
.v1-nav .stealth {
  font: 500 11px/1.2 var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--substrate-mid-2);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.v1-nav .stealth .dot {
  width: 6px; height: 6px; background: var(--substrate-amber);
  transform: rotate(45deg);
}
.v1-nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 24px;
}
.v1-nav-links a {
  font: 500 11px/1.2 var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--substrate-mid-2);
  text-decoration: none;
  transition: color 200ms cubic-bezier(0.2, 0.6, 0.2, 1);
}
.v1-nav-links a:hover { color: var(--substrate-amber); }
.v1-nav-links a.is-active { color: var(--substrate-ink); }

/* Compact hero variant (used on /careers) */
.v1-hero.v1-hero--compact { padding: 96px 64px 64px; }
.v1-hero.v1-hero--compact h1 { font-size: 44px; }

/* Jobs section — Ashby embed container */
.v1-jobs {
  padding: 48px 64px 120px;
}
.v1-jobs #ashby_embed { max-width: 920px; margin: 0 auto; }

.v1-hero {
  padding: 160px 64px 120px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.v1-hero .big-mark { width: 96px; margin-bottom: 56px; color: var(--substrate-ink); }
.v1-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 56px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-variation-settings: "opsz" 32, "wght" 900;
  margin: 0 0 24px;
  max-width: 880px;
  text-wrap: balance;
}
.v1-hero p {
  font: 400 19px/1.5 var(--font-body);
  color: var(--substrate-mid-2);
  margin: 0;
  max-width: 620px;
  text-wrap: pretty;
}
.v1-hero .amber-rule {
  width: 56px; height: 4px; background: var(--substrate-amber);
  margin-top: 48px;
}

.v1-what {
  padding: 96px 64px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 64px;
  border-top: 1px solid var(--substrate-surface-1);
  border-bottom: 1px solid var(--substrate-surface-1);
}
.v1-what .blocks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}
.v1-what .block h3 {
  font: 600 15px/1.3 var(--font-body);
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.v1-what .block p {
  font: 400 14px/1.6 var(--font-body);
  color: var(--substrate-mid-2);
  margin: 0;
}

.v1-contact {
  padding: 120px 64px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 96px;
}
.v1-contact .left h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 40px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-variation-settings: "opsz" 32, "wght" 900;
  margin: 16px 0 24px;
  text-wrap: balance;
}
.v1-contact .left p {
  font: 400 16px/1.6 var(--font-body);
  color: var(--substrate-mid-2);
  margin: 0 0 32px;
  max-width: 420px;
}
.v1-contact .meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--substrate-surface-1);
}
.v1-contact .meta .lbl {
  font: 500 10px/1.2 var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--substrate-mid-2);
  margin-bottom: 8px;
}
.v1-contact .meta .val {
  font: 400 14px/1.5 var(--font-body);
  color: var(--substrate-ink);
}

/* Footer */
.lp-footer {
  padding: 32px 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  border-top: 1px solid var(--substrate-surface-1);
}
.lp-footer .left,
.lp-footer .right {
  font: 500 10px/1.4 var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--substrate-mid-2);
}
.lp-footer .right { display: flex; gap: 32px; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .v1-nav { padding: 24px 32px; }
  .v1-nav-links { gap: 16px; }
  .v1-hero { padding: 96px 32px 72px; }
  .v1-hero h1 { font-size: 40px; }
  .v1-hero p { font-size: 17px; }
  .v1-hero.v1-hero--compact { padding: 64px 32px 48px; }
  .v1-hero.v1-hero--compact h1 { font-size: 36px; }
  .v1-jobs { padding: 32px 32px 72px; }
  .v1-what {
    padding: 72px 32px;
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .v1-what .blocks { grid-template-columns: 1fr; gap: 32px; }
  .v1-contact {
    padding: 72px 32px;
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .v1-contact .meta { grid-template-columns: 1fr; }
  .lp-footer {
    padding: 24px 32px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .v1-hero h1 { font-size: 32px; }
  .v1-contact .left h2 { font-size: 32px; }
}