/* Underdown Labs — company site */
:root {
  --cream: #f5f0e8;
  --cream-dark: #ede8dc;
  --ink: #1a1612;
  --ink-soft: #2c2416;
  --warm: #4a3728;
  --brown: #8b5e3c;
  --sage: #7a9e7e;
  --sage-dark: #5a7a5e;
  --white: #ffffff;
  --shadow: 0 24px 48px rgba(44, 36, 22, 0.08);
  --radius: 16px;
  --font: "Nunito", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--warm);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--sage-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--ink-soft);
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: min(1080px, 100% - 3rem);
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 240, 232, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--cream-dark);
}

.site-header .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--ink-soft);
  text-decoration: none;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(145deg, var(--ink-soft), #3d3228);
  display: grid;
  place-items: center;
  color: var(--cream);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
}

.nav a {
  color: var(--brown);
  text-decoration: none;
}

.nav a:hover {
  color: var(--ink-soft);
}

.nav-toggle {
  display: none;
  border: none;
  background: var(--cream-dark);
  color: var(--ink-soft);
  font: inherit;
  font-weight: 700;
  padding: 0.5rem 0.85rem;
  border-radius: 10px;
  cursor: pointer;
}

@media (max-width: 720px) {
  .nav-toggle {
    display: block;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.5rem 1.25rem;
    background: var(--cream);
    border-bottom: 1px solid var(--cream-dark);
    gap: 0.75rem;
  }

  .nav.is-open {
    display: flex;
  }
}

/* Hero */
.hero {
  padding: 4.5rem 0 3.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sage-dark);
  margin-bottom: 1rem;
}

.hero h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.12;
  color: var(--ink-soft);
  letter-spacing: -0.02em;
}

.hero-lead {
  font-size: 1.2rem;
  max-width: 34ch;
  margin: 0 0 2rem;
  color: var(--brown);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.35rem;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.9375rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--sage);
  color: var(--cream);
}

.btn-primary:hover {
  background: var(--sage-dark);
  color: var(--cream);
  box-shadow: 0 8px 24px rgba(90, 122, 94, 0.35);
}

.btn-secondary {
  background: var(--white);
  color: var(--ink-soft);
  border-color: var(--cream-dark);
}

.btn-secondary:hover {
  border-color: var(--sage);
  color: var(--sage-dark);
}

.hero-card {
  background: var(--white);
  border: 1px solid var(--cream-dark);
  border-radius: calc(var(--radius) + 4px);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.hero-card h2 {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 800;
  color: var(--ink-soft);
}

.fact-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.fact-list li {
  display: flex;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--cream-dark);
  font-size: 0.9375rem;
}

.fact-list li:first-child {
  border-top: none;
  padding-top: 0;
}

.fact-list strong {
  display: block;
  color: var(--ink-soft);
  font-weight: 700;
}

.fact-icon {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border-radius: 8px;
  background: var(--cream);
  display: grid;
  place-items: center;
  font-size: 1rem;
}

/* Sections */
section {
  padding: 3.5rem 0;
}

.section-title {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--ink-soft);
}

.section-lead {
  margin: 0 0 2rem;
  max-width: 52ch;
  color: var(--brown);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--white);
  border: 1px solid var(--cream-dark);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--ink-soft);
}

.card p {
  margin: 0;
  font-size: 0.975rem;
}

.card a.stretched {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 700;
  text-decoration: none;
}

.product-card {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
  align-items: center;
  background: linear-gradient(135deg, var(--ink-soft) 0%, #3d3228 100%);
  color: var(--cream);
  border: none;
}

.product-card h3,
.product-card p {
  color: var(--cream);
}

.product-card p {
  opacity: 0.9;
}

.product-card .btn-primary {
  background: var(--cream);
  color: var(--ink-soft);
}

.product-card .btn-primary:hover {
  background: var(--white);
}

@media (max-width: 640px) {
  .product-card {
    grid-template-columns: 1fr;
  }
}

/* Contact band */
.contact-band {
  background: var(--white);
  border-block: 1px solid var(--cream-dark);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 720px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-grid a {
  font-weight: 700;
}

/* Legal pages */
.page-hero {
  padding: 3rem 0 1.5rem;
  text-align: center;
}

.page-hero h1 {
  margin: 0 0 0.5rem;
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--ink-soft);
}

.page-hero .meta {
  font-size: 0.875rem;
  color: var(--brown);
}

.legal-content {
  max-width: 42rem;
  margin: 0 auto 4rem;
}

.legal-block {
  background: var(--white);
  border: 1px solid var(--cream-dark);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.25rem;
}

.legal-block h2 {
  margin: 0 0 0.75rem;
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--ink-soft);
}

.legal-block p,
.legal-block ul {
  margin: 0;
}

.legal-block ul {
  padding-left: 1.25rem;
}

.legal-block li + li {
  margin-top: 0.35rem;
}

/* Footer */
.site-footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--cream-dark);
  font-size: 0.875rem;
  color: var(--brown);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-links a {
  color: var(--brown);
  text-decoration: none;
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--ink-soft);
}