/* Biotech Inc — shared stylesheet. Plain, light, fast. No frameworks. */

:root {
  --ink: #1c2733;
  --muted: #5a6b7d;
  --line: #e3e9ef;
  --bg: #ffffff;
  --wash: #f4f7f9;
  --accent: #1f7a8c;
  --accent-deep: #14535f;
  --radius: 10px;
  --measure: 42rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
}

/* Subtle header accent: CSS gradient only, no stock imagery. */
.site-header {
  background: linear-gradient(135deg, #eef4f6 0%, #e2edf1 55%, #d8e7ec 100%);
  border-bottom: 1px solid var(--line);
}

.site-header-inner {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 1.25rem 1.25rem 1.5rem;
}

.brand {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
}

.brand small {
  display: block;
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--muted);
  margin-top: 0.15rem;
}

nav.main-nav { margin-top: 1rem; }

nav.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

nav.main-nav a {
  color: var(--accent-deep);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding-bottom: 0.15rem;
  border-bottom: 2px solid transparent;
}

nav.main-nav a:hover { border-bottom-color: var(--accent); }

nav.main-nav a[aria-current="page"] { border-bottom-color: var(--accent-deep); }

main {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3.5rem;
}

h1 {
  font-size: 2rem;
  line-height: 1.25;
  margin: 0 0 1.25rem;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.25rem;
  margin: 2.25rem 0 0.75rem;
}

p { margin: 0 0 1.1rem; }

.lede { font-size: 1.15rem; color: var(--muted); }

ul.services, ul.plain {
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
}

ul.services li, ul.plain li { margin-bottom: 1.25rem; }

ul.services li strong { display: block; margin-bottom: 0.2rem; }

a { color: var(--accent-deep); }

footer.site-footer {
  border-top: 1px solid var(--line);
  background: var(--wash);
}

footer.site-footer .inner {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
  font-size: 0.9rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

footer.site-footer a { color: var(--muted); }

/* Contact form */
form.contact { margin-top: 1.75rem; }

.field { margin-bottom: 1.25rem; }

.field label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

.field .hint {
  display: block;
  font-weight: 400;
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.field input[type="text"],
.field input[type="email"],
.field textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  font: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: #fff;
  border: 1px solid #c8d3dc;
  border-radius: var(--radius);
}

.field textarea { min-height: 7rem; resize: vertical; }

.field input:focus, .field textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

button[type="submit"] {
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--accent-deep);
  border: none;
  border-radius: var(--radius);
  padding: 0.7rem 1.6rem;
  cursor: pointer;
}

button[type="submit"]:hover { background: var(--accent); }

.form-note {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}

@media (max-width: 560px) {
  h1 { font-size: 1.6rem; }
  main { padding: 2rem 1.25rem 3rem; }
}