@font-face {
  font-family: "Robotastic";
  src: url("/assets/robotastic.ttf") format("truetype");
  font-display: swap;
}

:root {
  --bg: #e3e5e4;
  --bg-rgb: 227, 229, 228;
  --fg: #48494b;
  --fg-rgb: 72, 73, 75;
  --line: rgba(var(--fg-rgb), 0.15);
  --soft: rgba(var(--fg-rgb), 0.06);
  color-scheme: light;
  font-synthesis: none;
}

:root[data-theme="dark"] {
  --bg: #1a1b1c;
  --bg-rgb: 26, 27, 28;
  --fg: #e3e5e4;
  --fg-rgb: 227, 229, 228;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--fg);
  font-family: "Courier New", ui-monospace, monospace;
  font-size: 16px;
  line-height: 1.6;
  transition: background-color 180ms ease, color 180ms ease;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

img {
  display: block;
  max-width: 100%;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 200;
  top: 0.75rem;
  left: 0.75rem;
  transform: translateY(-160%);
  border: 1px solid var(--fg);
  background: var(--bg);
  padding: 0.65rem 0.9rem;
}

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

.topbar {
  position: sticky;
  z-index: 50;
  top: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  min-height: 72px;
  align-items: center;
  padding: 0 1.5rem;
  border-bottom: 1px solid var(--line);
  background: rgba(var(--bg-rgb), 0.85);
  backdrop-filter: blur(12px);
}

.brand {
  width: max-content;
  font-family: "Robotastic", "Courier New", monospace;
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  line-height: 1;
  text-decoration: none;
}

.desktop-nav {
  display: flex;
  align-items: stretch;
  align-self: stretch;
}

.nav-link {
  display: flex;
  align-items: center;
  border-bottom: 2px solid transparent;
  padding: 0.5rem 1rem;
  color: rgba(var(--fg-rgb), 0.5);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 150ms ease, border-color 150ms ease;
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link.active {
  color: var(--fg);
}

.nav-link.active {
  border-bottom-color: var(--fg);
}

.topbar-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.3rem;
}

.icon-link,
.icon-button {
  display: inline-flex;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  color: rgba(var(--fg-rgb), 0.5);
  background: transparent;
  cursor: pointer;
  transition: color 150ms ease, background-color 150ms ease, border-color 150ms ease;
}

.icon-button {
  border-color: var(--line);
  color: var(--fg);
}

.icon-link:hover,
.icon-link:focus-visible,
.icon-button:hover,
.icon-button:focus-visible {
  color: var(--fg);
  border-color: rgba(var(--fg-rgb), 0.32);
  background: var(--soft);
}

.icon-link svg,
.icon-button svg {
  width: 19px;
  height: 19px;
}

.theme-icon-sun {
  display: none;
}

:root[data-theme="dark"] .theme-icon-moon {
  display: none;
}

:root[data-theme="dark"] .theme-icon-sun {
  display: block;
}

.menu-button {
  display: none;
}

.mobile-overlay {
  position: fixed;
  z-index: 100;
  inset: 0;
  pointer-events: none;
  background: transparent;
  transition: background-color 300ms ease;
}

.mobile-overlay.open {
  pointer-events: auto;
  background: rgba(0, 0, 0, 0.3);
}

.mobile-drawer {
  position: absolute;
  top: 0;
  right: 0;
  display: flex;
  width: min(320px, 85vw);
  height: 100%;
  flex-direction: column;
  border-left: 1px solid var(--line);
  background: var(--bg);
  transform: translateX(100%);
  transition: transform 300ms ease;
}

.mobile-overlay.open .mobile-drawer {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--line);
}

.drawer-nav {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 1rem 0;
}

.drawer-link {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 1rem 1.5rem;
  border-left: 3px solid transparent;
  color: rgba(var(--fg-rgb), 0.62);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
}

.drawer-link:hover,
.drawer-link:focus-visible {
  background: var(--soft);
  color: var(--fg);
}

.drawer-link.active {
  border-left-color: var(--fg);
  color: var(--fg);
}

.drawer-socials {
  display: flex;
  gap: 0.75rem;
  border-top: 1px solid var(--line);
  padding: 1rem 1.5rem 1.5rem;
}

.drawer-socials a {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: rgba(var(--fg-rgb), 0.68);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.drawer-socials svg {
  width: 16px;
  height: 16px;
}

.landing-page {
  width: min(100%, 1080px);
  margin: 0 auto;
  padding: 2.25rem 1.5rem 4rem;
}

.hero {
  padding: 3.5rem 0 3.25rem;
  text-align: center;
}

.hero h1,
.docs-page h1,
.section-title {
  font-family: "Robotastic", "Courier New", monospace;
  font-weight: 400;
}

.hero h1 {
  margin: 0 0 0.8rem;
  font-size: clamp(3.25rem, 9vw, 5.5rem);
  letter-spacing: 0.05em;
  line-height: 1.05;
}

.eyebrow {
  margin: 0 0 1.5rem;
  color: rgba(var(--fg-rgb), 0.58);
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.hero-copy {
  max-width: 560px;
  margin: 0 auto 2rem;
  color: rgba(var(--fg-rgb), 0.72);
  font-size: 1rem;
  line-height: 1.75;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.cta-button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--fg);
  padding: 0.75rem 1.8rem;
  color: var(--fg);
  background: transparent;
  font-family: "Courier New", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 150ms ease, background-color 150ms ease;
}

.cta-button:hover,
.cta-button:focus-visible,
.cta-button.primary {
  background: var(--fg);
  color: var(--bg);
}

.cta-button.primary:hover,
.cta-button.primary:focus-visible {
  background: transparent;
  color: var(--fg);
}

.landing-section {
  padding: 3.25rem 0;
}

.section-title {
  margin: 0 0 1.5rem;
  font-size: clamp(1.55rem, 4vw, 2rem);
  letter-spacing: 0.05em;
  line-height: 1.3;
}

.about-layout,
.feature-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 440px);
  align-items: center;
  gap: clamp(3rem, 6vw, 5rem);
}

.feature-layout {
  grid-template-columns: 1fr 1fr;
}

.feature-layout.reverse .feature-copy {
  order: 2;
}

.feature-layout.reverse .feature-visual {
  order: 1;
}

.body-copy p,
.feature-copy p {
  margin: 0 0 1rem;
  color: rgba(var(--fg-rgb), 0.74);
  line-height: 1.75;
}

.maskie-quartet {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  width: 100%;
}

.maskie-frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #e3e5e4;
}

.maskie-frame img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  image-rendering: pixelated;
  filter: grayscale(1) contrast(1.04);
  transition: transform 250ms steps(3, end), filter 180ms ease;
}

.maskie-frame:hover img {
  transform: scale(1.04);
  filter: grayscale(1) contrast(1.12);
}

.values {
  display: grid;
  border: 1px solid var(--line);
}

.value {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--line);
}

.value:last-child {
  border-bottom: 0;
}

.value-number {
  color: rgba(var(--fg-rgb), 0.4);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
}

.value h3 {
  margin: 0 0 0.25rem;
  font-family: "Robotastic", "Courier New", monospace;
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.05em;
}

.value p {
  margin: 0;
  color: rgba(var(--fg-rgb), 0.58);
  font-size: 0.9rem;
}

.chain-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line);
}

.chain-card {
  min-height: 260px;
  padding: 1.75rem;
}

.chain-card:first-child {
  border-right: 1px solid var(--line);
}

.chain-index {
  display: block;
  margin-bottom: 2.5rem;
  color: rgba(var(--fg-rgb), 0.38);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
}

.chain-card h3 {
  margin: 0 0 0.85rem;
  font-family: "Robotastic", "Courier New", monospace;
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: 0.05em;
}

.chain-card p {
  margin: 0;
  color: rgba(var(--fg-rgb), 0.68);
  font-size: 0.92rem;
  line-height: 1.75;
}

.pull-quote {
  margin: 1rem 0;
  padding: 4rem 1rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  text-align: center;
}

.pull-quote p {
  margin: 0;
  color: rgba(var(--fg-rgb), 0.42);
  font-size: clamp(1.1rem, 3vw, 1.35rem);
  font-style: italic;
  line-height: 2;
}

.pull-quote strong {
  display: block;
  margin-top: 0.75rem;
  color: var(--fg);
  font-size: 0.95rem;
  font-style: normal;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.stat-card {
  min-height: 220px;
  padding: 2rem 1.25rem;
  border: 1px solid var(--line);
  text-align: center;
}

.stat-number {
  margin-bottom: 0.35rem;
  font-family: "Robotastic", "Courier New", monospace;
  font-size: clamp(2.1rem, 6vw, 3.1rem);
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.stat-label {
  margin-bottom: 1rem;
  color: rgba(var(--fg-rgb), 0.5);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.stat-card p {
  margin: 0;
  color: rgba(var(--fg-rgb), 0.62);
  font-size: 0.86rem;
  line-height: 1.65;
}

.landing-cta {
  padding: 5rem 0 2.5rem;
  text-align: center;
}

.landing-cta p {
  margin: 0 0 1.5rem;
  color: rgba(var(--fg-rgb), 0.68);
}

.docs-page {
  width: min(100%, 720px);
  margin: 0 auto;
  padding: 4rem 1.5rem 5rem;
}

.docs-page h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.4rem, 8vw, 3.4rem);
  letter-spacing: 0.05em;
  line-height: 1.15;
}

.docs-intro {
  margin: 0 0 2.5rem;
  color: rgba(var(--fg-rgb), 0.62);
}

.docs-subnav {
  display: flex;
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  scrollbar-width: none;
}

.docs-subnav::-webkit-scrollbar {
  display: none;
}

.docs-subnav a {
  flex: 0 0 auto;
  margin-bottom: -1px;
  padding: 0.75rem 1rem;
  border-bottom: 2px solid transparent;
  color: rgba(var(--fg-rgb), 0.5);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
}

.docs-subnav a:hover,
.docs-subnav a:focus-visible {
  color: var(--fg);
  border-bottom-color: var(--fg);
}

.docs-section {
  scroll-margin-top: 96px;
}

.docs-page h2 {
  margin: 3rem 0 1rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--line);
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 1.5;
  text-transform: uppercase;
}

.docs-page h3 {
  margin: 2rem 0 0.7rem;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.docs-page p,
.docs-page li {
  color: rgba(var(--fg-rgb), 0.82);
  font-size: 1rem;
  line-height: 1.75;
}

.docs-page p {
  margin: 0 0 1rem;
}

.docs-page code {
  padding: 0.08em 0.35em;
  background: var(--soft);
  color: var(--fg);
  font-family: inherit;
}

.docs-page ul,
.docs-page ol {
  margin: 0.5rem 0 1.25rem 1.5rem;
  padding: 0;
}

.docs-page li {
  margin-bottom: 0.6rem;
  padding-left: 0.2rem;
}

.facts-table {
  width: 100%;
  margin: 1.25rem 0 2rem;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.facts-table th,
.facts-table td {
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.facts-table th {
  width: 36%;
  color: rgba(var(--fg-rgb), 0.55);
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.notice {
  margin: 1.5rem 0;
  padding: 1rem 1.15rem;
  border: 1px solid var(--line);
  background: var(--soft);
  color: rgba(var(--fg-rgb), 0.75);
  font-size: 0.92rem;
}

.official-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.25rem;
}

.official-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--line);
  text-decoration: none;
  transition: background-color 150ms ease, border-color 150ms ease;
}

.official-link:hover,
.official-link:focus-visible {
  border-color: rgba(var(--fg-rgb), 0.45);
  background: var(--soft);
}

.official-link svg {
  width: 20px;
  height: 20px;
}

.official-link span {
  display: block;
  color: rgba(var(--fg-rgb), 0.5);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.site-footer {
  display: flex;
  min-height: 88px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem;
  border-top: 1px solid var(--line);
  color: rgba(var(--fg-rgb), 0.5);
}

.footer-copy {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  gap: 0.45rem;
}

.footer-links .icon-link {
  width: 36px;
  height: 36px;
}

@media (max-width: 768px) {
  .topbar {
    grid-template-columns: 1fr auto;
    min-height: 56px;
    padding: 0 1rem;
  }

  .brand {
    font-size: 1.05rem;
  }

  .desktop-nav {
    display: none;
  }

  .menu-button {
    display: inline-flex;
  }

  .icon-link,
  .icon-button {
    width: 36px;
    height: 36px;
  }

  .landing-page {
    padding: 2rem 1rem 3rem;
  }

  .hero {
    padding: 3.25rem 0 2.75rem;
  }

  .about-layout,
  .feature-layout,
  .feature-layout.reverse {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .maskie-quartet {
    width: min(100%, 560px);
    margin: 0 auto;
  }

  .feature-layout.reverse .feature-copy,
  .feature-layout.reverse .feature-visual {
    order: initial;
  }

  .stats-grid,
  .chain-grid {
    grid-template-columns: 1fr;
  }

  .chain-card {
    min-height: 0;
  }

  .chain-card:first-child {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .stat-card {
    min-height: 0;
  }

  .docs-page {
    padding: 3rem 1.5rem 4rem;
  }

  .site-footer {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .topbar {
    padding: 0 0.75rem;
  }

  .topbar-actions {
    gap: 0.12rem;
  }

  .brand {
    font-size: 0.94rem;
  }

  .icon-link,
  .icon-button {
    width: 34px;
    height: 34px;
  }

  .icon-link svg,
  .icon-button svg {
    width: 17px;
    height: 17px;
  }

  .hero h1 {
    font-size: clamp(2.5rem, 12.5vw, 3rem);
    letter-spacing: 0.03em;
  }

  .hero-copy {
    font-size: 0.96rem;
  }

  .button-row {
    flex-direction: column;
  }

  .cta-button {
    width: 100%;
  }

  .landing-section {
    padding: 3rem 0;
  }

  .maskie-quartet {
    gap: 0.65rem;
  }

  .value {
    grid-template-columns: 2rem 1fr;
    padding: 1.1rem;
  }

  .chain-card {
    padding: 1.4rem;
  }

  .chain-index {
    margin-bottom: 1.75rem;
  }

  .docs-page {
    padding-right: 1rem;
    padding-left: 1rem;
  }

  .docs-page h1 {
    font-size: 1.75rem;
    letter-spacing: 0.03em;
  }

  .docs-subnav {
    margin-right: -1rem;
  }

  .facts-table,
  .facts-table tbody,
  .facts-table tr,
  .facts-table th,
  .facts-table td {
    display: block;
    width: 100%;
  }

  .facts-table tr {
    border: 1px solid var(--line);
    border-bottom: 0;
  }

  .facts-table tr:last-child {
    border-bottom: 1px solid var(--line);
  }

  .facts-table th,
  .facts-table td {
    border: 0;
  }

  .facts-table th {
    padding-bottom: 0;
  }

  .official-links {
    grid-template-columns: 1fr;
  }
}

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