/* Mat Chabros — chabros.dev
   Hand-written. No build step. See DESIGN.md for the spec this implements.
   Fonts are self-hosted and OFL licensed; see fonts/OFL.txt. */

/* ---------------------------------------------------------------- tokens
   Every colour on the page is declared here and only here.
   DESIGN.md section 4 — light palette. */

:root {
  --bg: #F7F5EF;
  --rule: #D3D1C7;
  --ink: #2C2C2A;
  --body: #5F5E5A;
  --muted: #6E6D68;
  --accent: #993C1D;
  --accent-line: #D85A30;

  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, sans-serif;

  --inset: 32px;

  /* Lets the browser paint UA surfaces — scrollbar, canvas — to match the
     active theme instead of defaulting to light. */
  color-scheme: light dark;
}

/* DESIGN.md section 4 — dark palette. This block redeclares the seven colour
   tokens and nothing else. No other rule in this file may branch on theme.
   --muted is the one token whose two values were not originally identical by
   design: the light value is darkened so the 12px eyebrow clears WCAG AA. */

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1E1E1C;
    --rule: #444441;
    --ink: #F1EFE8;
    --body: #B4B2A9;
    --muted: #888780;
    --accent: #5DCAA5;
    --accent-line: #1D9E75;
  }
}

@media (max-width: 600px) {
  :root {
    --inset: 20px;
  }
}

/* ----------------------------------------------------------------- fonts
   One weight, 400, one file per family. DESIGN.md section 3. */

@font-face {
  font-family: "Source Serif 4";
  src: url("fonts/source-serif-4-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Sans";
  src: url("fonts/ibm-plex-sans-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ------------------------------------------------------------------ base */

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Keyboard focus. DESIGN.md section 9 task 3 requires this to use --accent,
   which is the one sanctioned exception to section 4's "--accent appears
   exactly once" rule: it is a transient state, never painted at rest.
   :focus-visible, not :focus, so a mouse click does not draw a ring. */

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

/* There is no motion on this page. This block is a guard, not a fix: it means
   any animation or transition added later is silenced for people who ask for
   reduced motion, rather than that request being honoured only by accident. */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* -------------------------------------------------------------- masthead
   Full-bleed rule, inset content. DESIGN.md section 5. */

.masthead {
  padding: 14px var(--inset);
  border-bottom: 1px solid var(--rule);
}

.name {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.4;
}

/* ------------------------------------------------------------------ main */

main {
  padding: 48px var(--inset) 36px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.04em;
}

h1 {
  max-width: 470px;
  margin: 0 0 20px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.6rem, 5vw, 1.9rem);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

main p:not(.eyebrow) {
  max-width: 450px;
  margin: 0 0 14px;
}

main p:last-child {
  margin-bottom: 0;
}

/* --------------------------------------------------------------- contact
   The rule here is structural: it separates who this is from how to reach
   them. It and the masthead are the only two dividers on the page. */

.contact {
  padding: 28px var(--inset) 48px;
  border-top: 1px solid var(--rule);
}

.touch {
  margin: 0 0 20px;
  font-size: 17px;
  line-height: 1.4;
}

.touch a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent-line);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.touch a:hover {
  text-decoration-color: var(--accent);
}

.social {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.social a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--body);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
}

/* The underline sits on the label, not the anchor, so it stops at the text
   instead of running under the icon and the gap. currentColor keeps it at
   --body: these links must be distinguishable from body text by something
   other than colour. */
.social a span {
  text-decoration: underline;
  text-decoration-color: currentColor;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.social svg {
  flex: none;
}