/* Padtronics — neobrutalist "hardware nameplate" system */

:root {
  --paper: #FBFAF4;
  --panel: #FFFFFF;
  --ink: #14181C;
  --volt: #E8FF4D;
  --circuit: #3B4EFF;
  --tag: #FF5C35;
  --muted: #55595E;
  --border: 3px solid var(--ink);
  --shadow: 5px 5px 0 var(--ink);
  --shadow-lg: 8px 8px 0 var(--ink);
  --shadow-sm: 3px 3px 0 var(--ink);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
  min-width: 0;
}

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

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

.eyebrow {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Header */

.site-header {
  border-bottom: var(--border);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  padding-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.wordmark {
  display: inline-block;
  font-family: "Space Grotesk", Inter, sans-serif;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  background: var(--volt);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 5px 12px;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  min-width: 0;
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.site-nav a:hover { color: var(--circuit); }

/* Main content */

main {
  padding-top: 48px;
  padding-bottom: 72px;
}

h1 {
  font-family: "Space Grotesk", Inter, sans-serif;
  font-size: 40px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 0 0 14px;
}

h1 .hl {
  display: inline-block;
  background: var(--volt);
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 0 10px;
}

h2 {
  font-family: "Space Grotesk", Inter, sans-serif;
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  font-weight: 700;
  margin: 40px 0 14px;
}

h3 {
  font-family: "Space Grotesk", Inter, sans-serif;
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 8px;
}

h4 {
  font-size: 17px;
  font-weight: 700;
  margin: 28px 0 8px;
}

p { margin: 0 0 20px; }

ul, ol { margin: 0 0 20px; padding-left: 24px; }
li { margin-bottom: 8px; }

hr {
  border: none;
  border-top: var(--border);
  margin: 40px 0;
}

.subhead {
  font-size: 20px;
  color: var(--muted);
  margin: 0 0 28px;
  line-height: 1.5;
}

.lede {
  font-size: 18px;
  line-height: 1.6;
  background: var(--panel);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 20px 24px;
  margin: 0 0 32px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 8px 0 24px;
  border: var(--border);
}

figure { margin: 0 0 28px; }
figcaption {
  font-size: 14px;
  color: var(--muted);
  margin-top: 8px;
}

p.caption {
  font-size: 14px;
  color: var(--muted);
  margin: -12px 0 24px;
}

blockquote, .pullquote {
  margin: 32px 0;
  padding: 16px 20px;
  border: var(--border);
  border-left-width: 8px;
  background: var(--volt);
  box-shadow: var(--shadow-sm);
  font-size: 20px;
  line-height: 1.5;
  color: var(--ink);
  font-family: "Space Grotesk", Inter, sans-serif;
  font-weight: 500;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
  background: var(--panel);
  border: 1px solid var(--ink);
  padding: 2px 5px;
}

/* Buttons */

.btn {
  display: inline-block;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 10px 18px;
  border: var(--border);
  box-shadow: var(--shadow-sm);
  background: var(--volt);
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.08s, box-shadow 0.08s;
}

.btn:hover {
  transform: translate(3px, 3px);
  box-shadow: 0 0 0 var(--ink);
  text-decoration: none;
}

/* Reading card — wraps legacy/preserved article bodies */

.reading-card {
  background: var(--panel);
  border: var(--border);
  box-shadow: var(--shadow-lg);
  padding: 36px clamp(20px, 5vw, 48px);
}

/* Tool listings on /tools/ */

.tool-group h2 {
  border-top: var(--border);
  padding-top: 32px;
}

.tool-group:first-of-type h2 {
  border-top: none;
  padding-top: 0;
}

.tool {
  background: var(--panel);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 20px 24px;
  margin-bottom: 24px;
}

.tool h3 {
  margin: 0 0 6px;
  font-size: 18px;
}

.tool p {
  margin: 0 0 10px;
  color: var(--ink);
}

.tool p:last-child { margin-bottom: 0; }

.tool .buy-link a {
  display: inline-block;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 8px 14px;
  border: var(--border);
  box-shadow: var(--shadow-sm);
  background: var(--circuit);
  color: #fff;
  text-decoration: none;
  transition: transform 0.08s, box-shadow 0.08s;
}

.tool .buy-link a:hover {
  transform: translate(3px, 3px);
  box-shadow: 0 0 0 var(--ink);
}

/* Homepage link list */

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

.reading-list li {
  background: var(--panel);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 18px 22px;
  margin-bottom: 20px;
}

.reading-list a {
  font-family: "Space Grotesk", Inter, sans-serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  text-decoration: none;
}

.reading-list a:hover { color: var(--circuit); }

.reading-list p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 15px;
}

/* Footer */

.site-footer {
  border-top: var(--border);
  background: var(--paper);
}

.site-footer .wrap {
  padding: 28px 24px 40px;
  font-size: 14px;
  color: var(--muted);
}

.site-footer nav {
  margin-bottom: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.site-footer nav a {
  color: var(--ink);
  text-decoration: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.site-footer nav a:hover { color: var(--circuit); }

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

/* 404 */

.not-found {
  text-align: center;
  padding: 60px 0;
}

.not-found .code {
  display: inline-block;
  font-family: "Space Grotesk", Inter, sans-serif;
  font-size: 96px;
  font-weight: 700;
  line-height: 1;
  background: var(--volt);
  border: var(--border);
  box-shadow: var(--shadow-lg);
  padding: 12px 32px;
  margin-bottom: 28px;
}

.not-found h1 { font-size: 26px; }

/* Reduced motion */

@media (prefers-reduced-motion: reduce) {
  .btn, .tool .buy-link a { transition: none; }
  .btn:hover, .tool .buy-link a:hover {
    transform: none;
    box-shadow: var(--shadow-sm);
  }
}

/* Mobile */

@media (max-width: 480px) {
  body { font-size: 17px; }
  h1 { font-size: 30px; }
  h2 { font-size: 21px; }
  .site-nav a { font-size: 12px; }
  main { padding-top: 36px; }
  .lede, .tool, .reading-list li { padding: 16px 18px; }
  .reading-card { padding: 24px 20px; }
  .not-found .code { font-size: 64px; padding: 10px 22px; }
}