/* === Fonts ===
   Self-hosted: the CSP allows no third-party origins, so fonts cannot come
   from a CDN. Latin subset only, which is all this site's copy needs.

   The paths are relative rather than root-relative so they resolve the same
   way from this file's source location and from dist/assets/css/ — which also
   lets the link checker verify them without being told where the site root is. */
@font-face {
  font-family: Poppins;
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url("../../static/fonts/poppins-v24-latin-300.woff2") format("woff2");
}

@font-face {
  font-family: Poppins;
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../../static/fonts/poppins-v24-latin-400.woff2") format("woff2");
}

@font-face {
  font-family: Poppins;
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../../static/fonts/poppins-v24-latin-500.woff2") format("woff2");
}

@font-face {
  font-family: Poppins;
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../../static/fonts/poppins-v24-latin-600.woff2") format("woff2");
}

/* === Theme tokens ===
   Light is the default. Dark comes from the OS preference, which is what makes
   the theme work with JavaScript disabled; [data-theme] on <html> is set by
   main.js only when the visitor has overridden that preference. */
:root {
  /* Family names are quoted because inside a custom property Stylelint cannot
     tell a font stack from a list of keywords it wants lowercased. */
  --font-body: "Poppins", system-ui, -apple-system, "Segoe UI", "Roboto", sans-serif;
  --color-bg: #fff;
  --color-text: #555;
  --color-heading: #333;
  --color-rule: #e6e6e6;

  /* Hero copy sits on the photograph, so it keeps one value in both themes. */
  --color-hero-text: #eee4e4;
  --measure: 44rem;
  --gutter: 50px;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #333;
    --color-text: #fff;
    --color-heading: #fff;
    --color-rule: #3f3f3f;

    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --color-bg: #333;
  --color-text: #fff;
  --color-heading: #fff;
  --color-rule: #3f3f3f;

  color-scheme: dark;
}

/* === Reset / Normalize === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

img,
picture,
video,
svg {
  display: block;
  max-width: 100%;
}

ul {
  list-style: none;
}

/* The UA rule for [hidden] is a bare attribute selector, so any component rule
   that sets `display` outranks it — which would leave the theme toggle on
   screen and inert when its script has not run. */
[hidden] {
  display: none !important;
}

/* === Typography === */
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 24px;
  color: var(--color-text);
  background-color: var(--color-bg);
}

h1,
h2,
h3,
h4 {
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-heading);
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--color-heading);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* === Skip Link === */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 1000;
  padding: 0.5rem 1rem;
  color: #fff;
  text-decoration: none;
  background: #1f1f1f;
  border-radius: 0 0 0.25rem 0.25rem;
}

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

/* === Shared layout === */
.container {
  width: 100%;
  max-width: 1140px;
  padding-inline: 15px;
  margin-inline: auto;
}

main {
  flex: 1 0 auto;
}

/* === Header === */
.header-inner {
  display: flex;
  column-gap: 30px;
  align-items: center;
  min-height: 110px;
  padding-inline: var(--gutter);
}

.site-logo {
  display: flex;
  flex: 0 0 auto;
  column-gap: 10px;
  align-items: center;
  text-decoration: none;
}

/* Nav takes the slack so the logo and the actions sit at the two edges and the
   links stay optically centred, as in the design. */
.site-nav {
  display: flex;
  flex: 1 1 auto;
  justify-content: center;
}

.nav-list {
  display: flex;
  column-gap: 55px;
  align-items: center;
}

.nav-list > li {
  position: relative;
}

.nav-link {
  display: block;
  padding-block: 40px;
  font-size: 14px;
  font-weight: 500;
  line-height: 30px;
  letter-spacing: 1px;
  text-transform: uppercase;
  text-decoration: none;
}

.nav-link:hover,
.nav-link[aria-current] {
  font-weight: 600;
  color: var(--color-heading);
}

/* Submenu: a CSS-only disclosure. Focusing the trigger puts :focus-within on
   its <li>, which reveals the panel, so the submenu links are reachable by
   keyboard in the very next Tab — no aria-expanded this markup could not keep
   honest without a script. */
.submenu-trigger::after {
  display: inline-block;
  width: 0.4em;
  height: 0.4em;
  margin-bottom: 0.15em;
  margin-left: 0.5em;
  content: "";
  border-right: 1px solid currentcolor;
  border-bottom: 1px solid currentcolor;
  transform: rotate(45deg);
}

.submenu {
  position: absolute;
  top: 100%;
  left: -20px;
  z-index: 99;
  width: 250px;
  margin-top: 20px;
  visibility: hidden;
  background-color: var(--color-bg);
  border: 1px solid var(--color-rule);
  box-shadow: 0 3px 5px rgb(0 0 0 / 10%);
  opacity: 0;

  /* Named rather than `all`, which would also animate the panel's background
     and border every time the theme is switched. */
  transition:
    opacity 0.3s ease,
    margin-top 0.3s ease,
    visibility 0.3s ease;
}

.has-submenu:hover > .submenu,
.has-submenu:focus-within > .submenu {
  margin-top: 0;
  visibility: visible;
  opacity: 1;
}

.submenu li + li {
  border-top: 1px solid var(--color-rule);
}

.submenu-link {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  line-height: 20px;
  text-decoration: none;
}

.submenu-link:hover,
.submenu-link[aria-current] {
  color: var(--color-heading);
}

/* Submenu links fill the panel, so an offset focus ring would spill outside. */
.submenu-link:focus-visible {
  outline-offset: -3px;
}

/* === Header actions === */
.header-actions {
  display: flex;
  flex: 0 0 auto;
  column-gap: 25px;
  align-items: center;
  justify-content: flex-end;
}

.theme-toggle,
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: inherit;
  cursor: pointer;
  background: none;
  border: 0;
  transition: color 0.3s ease;
}

.theme-toggle:hover,
.social-link:hover {
  color: var(--color-heading);
}

.social-link svg {
  width: 16px;
  height: 16px;
  fill: currentcolor;
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentcolor;
  stroke-width: 1.6;
  stroke-linecap: round;
}

/* The icon shows the theme the button switches *to*: a moon while light, a sun
   while dark. aria-pressed carries the same state for assistive tech. */
.icon-sun {
  display: none;
}

.theme-toggle[aria-pressed="true"] .icon-sun {
  display: block;
}

.theme-toggle[aria-pressed="true"] .icon-moon {
  display: none;
}

/* === Hero === */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  height: 800px;
  overflow: hidden;
  background-color: #111;
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 70% center;
}

/* Guarantees contrast for the copy at widths where the subject crops into it.
   Over the near-black left edge of the photograph it is imperceptible. */
.hero::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(to right, rgb(0 0 0 / 65%) 0%, rgb(0 0 0 / 0%) 60%);
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-greeting,
.hero-alias {
  font-size: 45px;
  font-weight: 300;
  line-height: 1;
  color: var(--color-hero-text);
}

.hero-name {
  margin-block: 8px;
  font-size: 80px;
  font-weight: 400;
  line-height: 1;
  color: var(--color-hero-text);
}

/* === Text pages ===
   These share the hero's container, so their left edge lines up with the hero
   copy; the measure is capped on the blocks themselves. */
.page {
  padding-block: 80px;
}

.page h1 {
  max-width: var(--measure);
  margin-bottom: 1.25rem;
  font-size: 36px;
  line-height: 42px;
}

.page p {
  max-width: var(--measure);
  margin-bottom: 1rem;
}

.page ul {
  max-width: var(--measure);
  padding-left: 1.25rem;
  margin-bottom: 1rem;
  list-style: disc;
}

.page a {
  text-decoration: underline;
}

/* === Footer === */
.site-footer {
  padding-block: 30px;
  text-align: center;
}

.footer-text {
  font-size: 14px;
  line-height: 30px;
  text-transform: uppercase;
}

/* === Focus Styles === */
:focus-visible {
  outline: 2px solid currentcolor;
  outline-offset: 4px;
}

/* === Responsive ===
   Breakpoints follow the design's: the hero and its type step down together. */
@media (width <= 1599px) {
  .hero {
    height: 600px;
  }
}

@media (width <= 1199px) {
  :root {
    --gutter: 40px;
  }

  .nav-list {
    column-gap: 30px;
  }

  .hero {
    height: 550px;
  }
}

@media (width <= 991px) {
  .hero {
    height: 400px;
  }

  .hero-greeting,
  .hero-alias {
    font-size: 40px;
  }

  .hero-name {
    font-size: 60px;
  }

  .page {
    padding-block: 60px;
  }
}

@media (width <= 767px) {
  /* Two top-level links fit a phone without a drawer, so the header just
     stacks: logo and actions on one row, nav beneath. */
  .header-inner {
    flex-wrap: wrap;
    min-height: 0;
    padding-block: 25px;
  }

  .site-nav {
    flex-basis: 100%;
    order: 3;
    justify-content: flex-start;
  }

  .nav-link {
    padding-block: 0;
  }

  .submenu {
    margin-top: 10px;
  }

  .has-submenu:hover > .submenu,
  .has-submenu:focus-within > .submenu {
    margin-top: 0;
  }

  .header-actions {
    flex: 1 1 auto;
  }

  .hero {
    height: 300px;
  }

  .hero-greeting,
  .hero-alias {
    font-size: 36px;
  }

  .hero-name {
    font-size: 50px;
  }
}

@media (width <= 575px) {
  :root {
    --gutter: 25px;
  }

  .hero-greeting,
  .hero-alias {
    font-size: 30px;
  }

  .hero-name {
    font-size: 40px;
  }
}

@media (width <= 479px) {
  .hero-greeting,
  .hero-alias {
    font-size: 24px;
  }

  .hero-name {
    font-size: 32px;
  }
}

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