/* lzrdhub.com: the public page, in the LZRDHUB brand guide's Ocean Tech
   system (docs/design/brand.md). Colors come only from these tokens.
   Bright colors are accents: text on white is Deep Navy, and teal, blue and
   indigo sit on the navy header, where they pass contrast. */

:root {
  --color-teal: #00c2a8;
  --color-blue: #3b82f6;
  --color-indigo: #6366f1;
  --color-navy: #0b2035;
  --color-white: #ffffff;
  --color-text-muted: #45566b;
  --color-border: #d9dee7;
  --color-on-navy-muted: #c3cedb;
  --gradient-brand: linear-gradient(90deg, var(--color-teal), var(--color-blue), var(--color-indigo));
  /* Montserrat and Inter where installed; the system sans otherwise (not
     loaded from a third party: this page promises no outside requests). */
  --font-heading: Montserrat, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 2rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;
  --space-6: 4rem;
  --radius: 8px;
  --measure: 42rem;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--color-white);
  color: var(--color-navy);
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  line-height: 1.6;
}

.wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

/* ------------------------------------------------------------- header -- */

.masthead {
  background: var(--color-navy);
  color: var(--color-white);
  padding: var(--space-5) 0 var(--space-6);
  border-bottom: 4px solid transparent;
  border-image: var(--gradient-brand) 1;
}

.masthead.compact {
  padding: var(--space-4) 0;
}

.wordmark {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 700;
  letter-spacing: 0.18em;
}

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

.wordmark .light {
  font-weight: 400;
}

.tagline {
  margin: var(--space-2) 0 0;
  color: var(--color-teal);
  font-family: var(--font-heading);
  letter-spacing: 0.04em;
}

.masthead h1 {
  margin: var(--space-5) 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 600;
  line-height: 1.25;
}

.lead {
  margin: 0;
  color: var(--color-on-navy-muted);
  font-size: var(--font-size-lg);
}

/* --------------------------------------------------------------- body -- */

main {
  padding: var(--space-4) 0 var(--space-5);
}

h2 {
  margin: var(--space-5) 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 600;
}

section {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-teal);
  border-radius: var(--radius);
}

section h2 {
  margin-top: var(--space-2);
}

.muted {
  color: var(--color-text-muted);
}

/* Links: navy text with a brand-blue underline (blue text on white would
   fail the contrast check the brand guide asks for). */
a {
  color: var(--color-navy);
  text-decoration-color: var(--color-blue);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-color: var(--color-teal);
}

a:focus-visible {
  outline: 3px solid var(--color-blue);
  outline-offset: 2px;
}

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

footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-4) 0 var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

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