/*
 * Allusions studio site
 * Self-hosted Bricolage Grotesque and IBM Plex Mono font files are reused
 * from the AFK site, where they are documented as OFL-licensed assets.
 */

@font-face {
  font-family: "Bricolage Grotesque";
  src: url("fonts/bricolage-grotesque-latin-var.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
}

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

@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/ibm-plex-mono-500-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/ibm-plex-mono-600-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

:root {
  color-scheme: light;
  --ground: oklch(94.9% 0.012 81);
  --ground-deep: oklch(91.5% 0.018 78);
  --ink: oklch(19% 0.008 52);
  --muted: oklch(43% 0.012 63);
  --rule: oklch(74% 0.018 75);
  --accent: oklch(45% 0.115 38);
  --accent-dark: oklch(35% 0.09 38);
  --night: oklch(18% 0.009 52);
  --night-ink: oklch(94% 0.01 78);
  --night-muted: oklch(74% 0.012 74);
  --night-rule: oklch(40% 0.01 62);
  --display: "Bricolage Grotesque", system-ui, "Segoe UI", sans-serif;
  --body: system-ui, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", Consolas, monospace;
  --shell: 1180px;
  --gutter: clamp(1rem, 3vw, 2.5rem);
}

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

html {
  scroll-behavior: smooth;
  scrollbar-color: var(--accent) var(--ground-deep);
}

body {
  margin: 0;
  min-width: 0;
  overflow-x: hidden;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1rem;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--accent);
  color: var(--ground);
}

a {
  color: inherit;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.28em;
}

a:hover {
  color: var(--accent-dark);
}

a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.shell {
  width: min(calc(100% - (2 * var(--gutter))), var(--shell));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 0.75rem;
  left: 0.75rem;
  min-height: 44px;
  padding: 0.7rem 1rem;
  transform: translateY(-180%);
  background: var(--ink);
  color: var(--ground);
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
}

.skip-link:focus {
  transform: translateY(0);
}

.skip-link:hover {
  color: var(--ground);
}

.masthead {
  padding-top: clamp(1rem, 2.5vw, 1.75rem);
}

.masthead-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  padding-bottom: 0.7rem;
}

.studio-mark,
.section-heading p,
.project-index,
.status,
.availability,
.standard-heading > p {
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.075em;
  text-transform: uppercase;
}

nav,
.footer-links {
  display: flex;
  align-items: center;
  gap: clamp(0.35rem, 1.6vw, 1.35rem);
}

nav a,
.footer a,
.project-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
}

nav a {
  padding-inline: 0.35rem;
  font-size: 0.88rem;
  font-weight: 650;
  text-decoration: none;
}

.wordmark {
  max-width: 100%;
  margin: 0;
  padding: clamp(0.25rem, 1vw, 0.75rem) 0 clamp(1rem, 2vw, 1.55rem);
  overflow: hidden;
  font-family: var(--display);
  font-size: clamp(2.65rem, 8.35vw, 6rem);
  font-weight: 520;
  letter-spacing: clamp(0.08em, 1.6vw, 0.22em);
  line-height: 0.84;
  white-space: nowrap;
}

.ruled {
  border-top: 1px solid var(--rule);
}

.hero {
  padding-block: clamp(3.25rem, 8vw, 7.5rem) clamp(4rem, 8vw, 7rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(16rem, 0.55fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  align-items: end;
}

.hero h1 {
  max-width: 11.2ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3rem, 6.6vw, 6rem);
  font-weight: 520;
  letter-spacing: -0.038em;
  line-height: 0.92;
  text-wrap: balance;
}

.hero-copy {
  max-width: 37ch;
}

.hero-copy p {
  margin: 0;
  text-wrap: pretty;
}

.hero-lede {
  font-family: var(--display);
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  font-weight: 520;
  line-height: 1.35;
}

.hero-standard {
  position: relative;
  margin-top: 2rem !important;
  padding-left: 1.8rem;
  color: var(--muted);
  font-size: 0.96rem;
}

.hero-standard::before {
  position: absolute;
  top: 0;
  left: 0;
  color: var(--accent);
  content: "↳";
  font-family: var(--mono);
}

.projects {
  padding-bottom: clamp(4.5rem, 9vw, 8rem);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.15rem;
}

.section-heading h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.5rem, 2.7vw, 2.15rem);
  font-weight: 560;
  letter-spacing: -0.025em;
}

.project-register {
  border-top: 2px solid var(--ink);
}

.project {
  display: grid;
  grid-template-columns: 6rem minmax(0, 1fr) minmax(15rem, 0.58fr);
  gap: clamp(1.2rem, 3vw, 2.5rem);
  padding-block: clamp(1.75rem, 4vw, 3.25rem);
  border-bottom: 1px solid var(--rule);
  align-items: start;
}

.project:nth-child(2) {
  grid-template-columns: 6rem minmax(0, 0.72fr) minmax(18rem, 1.28fr);
}

.project:nth-child(3) {
  grid-template-columns: 6rem minmax(0, 1.18fr) minmax(15rem, 0.82fr);
}

.project-index {
  padding-top: 0.65rem;
  font-variant-numeric: tabular-nums;
}

.project-intro h3 {
  margin: 0 0 0.6rem;
  font-family: var(--display);
  font-size: clamp(2.6rem, 5.2vw, 4.8rem);
  font-weight: 520;
  letter-spacing: -0.038em;
  line-height: 0.94;
  text-wrap: balance;
}

.project-intro > p {
  max-width: 49ch;
  margin: 0;
  font-size: clamp(1rem, 1.4vw, 1.14rem);
  text-wrap: pretty;
}

.project-meta {
  display: grid;
  justify-items: start;
  gap: 1rem;
}

.status {
  display: inline-flex;
  min-height: 2rem;
  align-items: center;
  padding-inline: 0.65rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
}

.proof-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.28rem 0.85rem;
  max-width: 42rem;
  margin: 0;
  padding: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.6;
  list-style: none;
}

.proof-list li:not(:last-child)::after {
  margin-left: 0.85rem;
  color: var(--accent);
  content: "/";
}

.project-link {
  font-size: 0.91rem;
  font-weight: 700;
}

.availability {
  color: var(--muted);
  line-height: 1.5;
}

.standard {
  padding-block: clamp(4.5rem, 9vw, 8.5rem);
  background: var(--night);
  color: var(--night-ink);
}

.standard-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(20rem, 1.06fr);
  gap: clamp(3rem, 8vw, 8rem);
}

.standard-heading > p {
  margin-bottom: 1.5rem;
  color: var(--night-muted);
}

.standard h2 {
  max-width: 8.5ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3rem, 6vw, 5.7rem);
  font-weight: 500;
  letter-spacing: -0.038em;
  line-height: 0.92;
  text-wrap: balance;
}

.principles {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--night-rule);
  list-style: none;
}

.principles li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding-block: clamp(1.15rem, 2.3vw, 1.65rem);
  border-bottom: 1px solid var(--night-rule);
}

.principles span {
  padding-top: 0.15rem;
  color: var(--night-muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
}

.principles p {
  max-width: 55ch;
  margin: 0;
  color: var(--night-muted);
  text-wrap: pretty;
}

.principles strong {
  color: var(--night-ink);
  font-family: var(--display);
  font-size: 1.08rem;
  font-weight: 650;
}

.footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 2rem 3rem;
}

.footer > p {
  margin: 0;
  font-family: var(--display);
  font-weight: 650;
  letter-spacing: 0.12em;
}

.footer a {
  color: var(--muted);
  font-size: 0.85rem;
}

.not-found {
  display: grid;
  min-height: 100vh;
  align-content: center;
  justify-items: start;
  padding-block: 4rem;
}

.not-found .wordmark {
  width: 100%;
  margin-bottom: clamp(3rem, 10vw, 8rem);
  border-bottom: 1px solid var(--rule);
}

.not-found h1 {
  max-width: 12ch;
  margin: 0 0 1.25rem;
  font-family: var(--display);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 520;
  letter-spacing: -0.038em;
  line-height: 0.94;
  text-wrap: balance;
}

.not-found > p:not(.wordmark) {
  max-width: 44ch;
  margin: 0 0 1.5rem;
  color: var(--muted);
}

@media (max-width: 820px) {
  .hero-grid,
  .standard-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 2.5rem;
  }

  .hero-copy {
    max-width: 52ch;
    margin-left: min(16vw, 7rem);
  }

  .project,
  .project:nth-child(2),
  .project:nth-child(3) {
    grid-template-columns: 4.25rem minmax(0, 1fr);
  }

  .project-meta {
    grid-column: 2;
  }

  .standard-heading {
    display: grid;
    grid-template-columns: 4.25rem minmax(0, 1fr);
  }

  .standard-heading > p {
    padding-top: 0.45rem;
    writing-mode: vertical-rl;
  }

  .standard h2 {
    max-width: 10ch;
  }
}

@media (max-width: 520px) {
  .masthead-bar {
    align-items: flex-start;
  }

  .studio-mark {
    max-width: 8ch;
    padding-top: 0.9rem;
  }

  nav {
    justify-content: flex-end;
    gap: 0;
  }

  nav a {
    padding-inline: 0.45rem;
    font-size: 0.77rem;
  }

  .wordmark {
    font-size: clamp(2.2rem, 12vw, 3.3rem);
    letter-spacing: 0.11em;
  }

  .hero {
    padding-block: 3.25rem 4.5rem;
  }

  .hero h1 {
    font-size: clamp(2.85rem, 14vw, 4rem);
  }

  .hero-copy {
    margin-left: 0;
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
    gap: 0.25rem;
  }

  .project,
  .project:nth-child(2),
  .project:nth-child(3) {
    grid-template-columns: 1fr;
    gap: 1.15rem;
    padding-block: 2.25rem;
  }

  .project-index,
  .project-meta {
    grid-column: 1;
  }

  .project-index {
    padding-top: 0;
  }

  .project-intro h3 {
    font-size: clamp(2.65rem, 13vw, 3.8rem);
  }

  .standard {
    padding-block: 4.75rem;
  }

  .standard-heading {
    display: block;
  }

  .standard-heading > p {
    padding-top: 0;
    writing-mode: horizontal-tb;
  }

  .standard h2 {
    font-size: clamp(3rem, 14vw, 4rem);
  }

  .principles li {
    grid-template-columns: 2.25rem 1fr;
  }

  .footer {
    flex-direction: column;
  }

  .footer-links {
    flex-wrap: wrap;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}