/* distplat dispatch.css
   Baseline typography. One font stack, three sizes, one accent color.
   AAA contrast on body text. Single column. Mobile-first.
   Per WTR Tier 3 UX recommendation: minimal, premium feel, no design-tool dependency.
*/

:root {
  --color-text: #0f172a;        /* slate-900, 16.69:1 contrast on white (AAA) */
  --color-muted: #475569;       /* slate-600, 7.59:1 (AAA) */
  --color-bg: #ffffff;
  --color-surface: #f8fafc;     /* slate-50 for asides */
  --color-accent: #1e3a8a;      /* indigo-900, used sparingly */
  --color-accent-bg: #eef2ff;   /* indigo-50 for callouts */
  --color-rule: #e2e8f0;        /* slate-200 */
  --font-body: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, monospace;
  --measure: 68ch;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --radius: 6px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-text: #e2e8f0;
    --color-muted: #94a3b8;
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-accent: #93c5fd;
    --color-accent-bg: #1e3a8a;
    --color-rule: #334155;
  }
}

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

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

body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
  font-feature-settings: "kern" 1, "liga" 1;
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: var(--measure);
  margin: 0 auto;
  padding: var(--space-5) var(--space-3) var(--space-6);
}

article header {
  margin-bottom: var(--space-4);
}

h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin: 0 0 var(--space-2) 0;
  letter-spacing: -0.015em;
}

@media (min-width: 640px) {
  h1 { font-size: 2.5rem; }
}

h2 {
  font-size: 1.5rem;
  line-height: 1.25;
  margin: var(--space-5) 0 var(--space-2);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.2rem;
  line-height: 1.3;
  margin: var(--space-4) 0 var(--space-1);
}

.byline {
  color: var(--color-muted);
  font-size: 0.95rem;
  margin: 0 0 var(--space-3) 0;
}

p, ul, ol, blockquote { margin: 0 0 var(--space-2) 0; }
ul, ol { padding-left: 1.4rem; }
li { margin-bottom: 0.35rem; }

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover { text-decoration-thickness: 2px; }
a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

blockquote {
  border-left: 3px solid var(--color-rule);
  padding-left: var(--space-2);
  color: var(--color-muted);
  font-style: italic;
}

code, pre {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

pre {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: var(--space-2);
  overflow-x: auto;
  line-height: 1.4;
}

code {
  background: var(--color-surface);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

pre code {
  background: transparent;
  padding: 0;
}

aside.sbcis-score {
  background: var(--color-surface);
  border-left: 4px solid var(--color-accent);
  padding: var(--space-3);
  border-radius: var(--radius);
  margin: var(--space-3) 0;
}

aside.sbcis-score h3 {
  margin-top: 0;
  font-size: 1.05rem;
  color: var(--color-accent);
}

aside.sbcis-score p { margin: 0 0 0.4rem 0; }
aside.sbcis-score details { margin-top: 0.6rem; }
aside.sbcis-score summary {
  cursor: pointer;
  color: var(--color-muted);
  font-size: 0.95rem;
}

section.capture {
  margin: var(--space-5) 0 var(--space-3);
  padding: var(--space-3);
  background: var(--color-accent-bg);
  border-radius: var(--radius);
}

section.capture .cta {
  display: inline-block;
  margin-top: var(--space-1);
  padding: 0.6em 1.2em;
  background: var(--color-accent);
  color: white;
  text-decoration: none;
  border-radius: var(--radius);
  font-weight: 600;
}

section.capture .cta:focus-visible {
  outline-offset: 3px;
}

section.more-from {
  margin: var(--space-4) 0;
  padding: var(--space-3) var(--space-3) var(--space-2);
  background: var(--color-surface);
  border-radius: var(--radius);
}

section.more-from h3 {
  margin-top: 0;
  font-size: 1rem;
  color: var(--color-accent);
}

section.more-from ul {
  margin: 0;
  padding-left: var(--space-3);
}

section.more-from li {
  margin-bottom: var(--space-1);
}

section.newsletter {
  margin: var(--space-4) 0;
  padding: var(--space-3);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius);
}

section.newsletter h3 { margin-top: 0; }

section.newsletter form {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
}

section.newsletter input[type="email"] {
  flex: 1 1 200px;
  padding: 0.6em 0.8em;
  font: inherit;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
}

section.newsletter input[type="email"]:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

section.newsletter button {
  padding: 0.6em 1.2em;
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

footer {
  border-top: 1px solid var(--color-rule);
  padding: var(--space-3);
  text-align: center;
  color: var(--color-muted);
  font-size: 0.9rem;
}

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

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-accent);
  color: white;
  padding: 0.5em 1em;
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus { top: 0; }

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}