/* szrthk labs — one stylesheet, dark only. */

:root {
  --bg: #070707;
  --surface: #0c0c0c;
  --surface-2: #1d1d1d;
  --line: #262626;
  --line-strong: #494949;
  --text: #ffffff;
  --text-2: #d9d9d9;
  --text-3: #9a9a9a; /* ~7:1 on --bg; #494949 is kept for lines only */
  --red: #ec1c24;
  --red-dark: #b5161d;

  --display: "Clash Display", "Arial Narrow", Arial, sans-serif;
  --body: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  --hand: "Caveat", "Comic Sans MS", cursive;

  --gutter: 16px;
  --max: 1240px;
  --radius: 6px;
  --space: clamp(80px, 12vw, 160px);

  color-scheme: dark;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, p, ul, figure, dl, dd { margin: 0; }
ul { padding: 0; list-style: none; }

a { color: inherit; }

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

.skip {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--text);
  color: var(--bg);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
}
.skip:focus { top: 12px; }

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
@media (min-width: 768px) {
  :root { --gutter: 32px; }
}

.display {
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: -0.035em;
  word-spacing: 0.08em;
  line-height: 0.92;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(7, 7, 7, 0.94);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.02em;
  word-spacing: 0.1em;
  text-decoration: none;
  white-space: nowrap;
}

/* Same shape as favicon.svg: a red square with its top-right quarter cut out. */
.mark {
  width: 18px;
  height: 18px;
  background: var(--red);
  border-radius: 2px;
  clip-path: polygon(0 0, 50% 0, 50% 50%, 100% 50%, 100% 100%, 0 100%);
}

.nav {
  display: flex;
  gap: 4px;
}
.nav a {
  display: block;
  padding: 8px 10px;
  font-size: 15px;
  color: var(--text-2);
  text-decoration: none;
  border-radius: 4px;
}
.nav a:hover { color: var(--text); background: var(--surface-2); }

/* ---------- Buttons & links ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  background: var(--red);
  color: #fff;
  /* White on #EC1C24 is 4.4:1, so the label must be large text (>=18.66px bold) to pass AA. */
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background-color 0.15s ease;
}
.btn:hover { background: var(--red-dark); }
.btn:focus-visible { outline-color: var(--text); }

.text-link {
  color: var(--text-2);
  text-decoration: underline;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 4px;
}
.text-link:hover { color: var(--text); text-decoration-color: var(--red); }

/* ---------- Hero ---------- */

.hero {
  padding: clamp(56px, 10vw, 120px) 0 clamp(56px, 8vw, 96px);
}

.hero-title {
  font-size: clamp(3.25rem, 13.5vw, 11rem);
  line-height: 0.88;
  letter-spacing: -0.04em;
  word-spacing: 0.1em;
}

.hero-foot {
  display: grid;
  gap: 28px;
  margin-top: clamp(40px, 6vw, 72px);
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.lede {
  max-width: 34em;
  font-size: clamp(17px, 1.6vw, 20px);
  color: var(--text-2);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
}

@media (min-width: 900px) {
  .hero-foot {
    grid-template-columns: 1fr auto;
    align-items: end;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ---------- Sections ---------- */

.section { padding: var(--space) 0 0; }

.section-head {
  display: grid;
  gap: 12px;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
@media (min-width: 768px) {
  .section-head {
    grid-template-columns: 1fr auto;
    align-items: end;
  }
}

.section-title {
  font-size: clamp(3rem, 9vw, 7rem);
}

/* ---------- Built so far ---------- */

/* Shipped products. One .built-item row each; see README.md. */
.built:empty { display: none; }

.built-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 6px 16px;
  align-items: baseline;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
.built-item .built-line,
.built-item .built-year { grid-column: 2; }
@media (min-width: 900px) {
  .built-item {
    grid-template-columns: 56px minmax(0, 1fr) minmax(0, 1.2fr) auto;
    gap: 32px;
  }
  .built-item .built-line,
  .built-item .built-year { grid-column: auto; }
}

.index {
  font-family: var(--display);
  font-weight: 600;
  font-size: 15px;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}

.built-name {
  font-size: clamp(2rem, 4vw, 3rem);
}
.built-name a { text-decoration: none; }
.built-name a:hover { text-decoration: underline; text-decoration-color: var(--red); text-underline-offset: 6px; }

.built-line { color: var(--text-2); }
.built-year {
  color: var(--text-3);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
}

.built-empty {
  padding: 24px 20px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  color: var(--text-3);
  font-size: clamp(17px, 1.6vw, 20px);
}
@media (min-width: 960px) {
  .built-empty { padding: 32px 48px; }
}

/* ---------- About ---------- */

.about {
  display: grid;
  gap: 32px;
}
@media (min-width: 900px) {
  .about {
    grid-template-columns: 1fr 1.4fr;
    gap: 56px;
  }
}

.about-body {
  display: grid;
  gap: 18px;
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.5;
  max-width: 36em;
}
.about-body p:not(.signature) { color: var(--text-2); }

.signature {
  margin-top: 8px;
  font-family: var(--hand);
  font-weight: 600;
  font-size: clamp(34px, 4vw, 44px);
  line-height: 1;
  color: var(--text);
  transform: rotate(-3deg);
  transform-origin: left center;
}

/* ---------- Contact ---------- */

.contact { padding-bottom: var(--space); }

.contact-inner {
  display: grid;
  gap: 28px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
@media (min-width: 900px) {
  .contact-inner {
    grid-template-columns: 1.6fr 1fr;
    align-items: end;
    gap: 56px;
  }
}

.contact-title {
  font-size: clamp(2.75rem, 7.5vw, 6.5rem);
  max-width: 11em;
}

.contact-body {
  display: grid;
  gap: 20px;
  justify-items: start;
  color: var(--text-2);
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 32px 0 40px;
  font-size: 14px;
}

.footer-inner {
  display: grid;
  gap: 20px;
}
@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
}
.footer-links a {
  display: inline-block;
  padding: 6px 0;
  color: var(--text-2);
  text-decoration: none;
}
.footer-links a:hover { color: var(--text); text-decoration: underline; text-underline-offset: 4px; }

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  color: var(--text-3);
}

.tagline {
  margin-top: 0.4em;
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.5rem, 4vw, 2.75rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--red);
}

/* Small phones: keep the three nav links inside the viewport */
@media (max-width: 380px) {
  .nav { gap: 0; }
  .nav a { padding: 10px 7px; font-size: 14px; }
}