:root {
  --ink: #211322;
  --ink-soft: #352038;
  --paper: #f8f1e8;
  --white: #fffaf5;
  --muted: #746471;
  --line: rgba(33, 19, 34, 0.15);
  --line-light: rgba(255, 255, 255, 0.17);
  --accent: #ff775c;
  --accent-dark: #a43829;
  --accent-soft: #ffd9cf;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.lab-nav {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 0 clamp(1.25rem, 5vw, 5rem);
  background: var(--ink);
  color: var(--white);
  border-bottom: 1px solid var(--line-light);
}

.lab-brand {
  font: 700 1.7rem/1 Georgia, "Times New Roman", serif;
  letter-spacing: -.08em;
}

.lab-brand span { color: var(--accent); }

.lab-nav-meta {
  display: flex;
  gap: clamp(1rem, 4vw, 3rem);
  align-items: center;
  color: #cbbcc8;
  font-size: .72rem;
  font-weight: 750;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.lab-nav-meta a { padding-bottom: .25rem; border-bottom: 1px solid var(--accent); color: var(--white); }

.lab-hero {
  min-height: 520px;
  display: grid;
  align-content: center;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .55fr);
  column-gap: clamp(3rem, 10vw, 10rem);
  padding: clamp(4rem, 9vw, 8rem) clamp(1.25rem, 5vw, 5rem);
  background:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px),
    radial-gradient(circle at 78% 45%, rgba(255,119,92,.16), transparent 29%),
    var(--ink);
  background-size: 72px 72px, 72px 72px, auto, auto;
  color: var(--white);
}

.eyebrow {
  margin: 0 0 1.3rem;
  color: var(--accent-dark);
  font-size: .7rem;
  font-weight: 850;
  letter-spacing: .17em;
  text-transform: uppercase;
}

.lab-hero .eyebrow { grid-column: 1 / -1; color: var(--accent); }

.lab-hero h1 {
  margin: 0;
  font: 400 clamp(4rem, 8vw, 8rem)/.86 Georgia, "Times New Roman", serif;
  letter-spacing: -.065em;
}

.lab-hero h1 em { color: var(--accent); font-weight: 400; }

.hero-copy {
  align-self: end;
  max-width: 520px;
  margin: 0 0 .7rem;
  color: #d1c4ce;
  font-size: 1.05rem;
  line-height: 1.75;
}

.lab-layout {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(240px, .42fr) minmax(0, 1fr);
  gap: 1px;
  padding: clamp(4rem, 8vw, 7rem) clamp(1.25rem, 5vw, 5rem);
}

.brief-card,
.form-card {
  border: 1px solid var(--line);
}

.brief-card {
  padding: clamp(1.6rem, 3vw, 2.6rem);
  background: var(--ink-soft);
  color: var(--white);
}

.card-number { color: var(--accent); font-size: .72rem; font-weight: 850; }
.brief-card h2 { margin: 7rem 0 1rem; font: 400 2rem/1 Georgia, "Times New Roman", serif; }
.brief-card p { color: #cabcc7; line-height: 1.7; }
.brief-card ul { margin: 2rem 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line-light); }
.brief-card li { padding: .85rem 0; border-bottom: 1px solid var(--line-light); color: #e2d8df; font-size: .84rem; }

.form-card { padding: clamp(1.6rem, 4vw, 3.4rem); background: var(--white); }

.form-heading {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: flex-start;
  margin-bottom: 2.5rem;
  padding-bottom: 1.6rem;
  border-bottom: 1px solid var(--line);
}

.form-heading h2 { margin: 0; font: 400 clamp(2rem, 4vw, 3.4rem)/1 Georgia, "Times New Roman", serif; letter-spacing: -.04em; }
.demo-badge { padding: .5rem .75rem; background: var(--accent-soft); color: var(--accent-dark); font-size: .66rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }

form { display: grid; gap: 1.2rem; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
label { display: grid; gap: .55rem; }
label > span { color: #584955; font-size: .7rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  padding: .95rem 1rem;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

textarea { resize: vertical; min-height: 125px; }
input:focus, textarea:focus { border-color: var(--accent); background: var(--white); box-shadow: 0 0 0 3px rgba(255,119,92,.15); }

.form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; margin-top: .4rem; }
button { font: inherit; }

.button {
  min-height: 48px;
  border: 1px solid transparent;
  padding: 0 1.1rem;
  cursor: pointer;
  font-size: .76rem;
  font-weight: 800;
  transition: transform 160ms ease, background 160ms ease;
}

.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--accent); color: var(--ink); }
.button.primary:hover { background: #ff947d; }
.button.secondary { border-color: var(--line); background: transparent; color: var(--ink); }
.button.secondary:hover { background: var(--paper); }
.text-button { border: 0; border-bottom: 1px solid var(--ink); background: transparent; color: var(--ink); padding: .35rem 0; cursor: pointer; font-size: .74rem; font-weight: 800; }

#output { margin-top: 1.4rem; padding: 1rem 1.1rem; border-left: 3px solid var(--accent); background: var(--paper); line-height: 1.55; }
#output.error { border-color: #b33a45; color: #8d2631; background: #fbe6e4; }
#output.success { border-color: var(--accent-dark); color: #6f2a22; background: var(--accent-soft); }

.lab-footer {
  min-height: 120px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  padding: 2rem clamp(1.25rem, 5vw, 5rem);
  background: var(--ink);
  color: #bcaeba;
  font-size: .72rem;
  letter-spacing: .07em;
}

@media (max-width: 820px) {
  .lab-hero, .lab-layout { grid-template-columns: 1fr; }
  .hero-copy { margin-top: 2rem; }
  .brief-card h2 { margin-top: 3.5rem; }
  .field-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .lab-nav-meta > span { display: none; }
  .form-heading { flex-direction: column; }
  .lab-footer { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: .01ms !important; }
}