/* National Automaton — static site. */

@font-face {
  font-family: "Fraunces";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/fonts/fraunces-600.woff2") format("woff2");
}

@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/source-sans-3-400.woff2") format("woff2");
}

@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/fonts/source-sans-3-500.woff2") format("woff2");
}

@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/fonts/source-sans-3-600.woff2") format("woff2");
}

:root {
  --paper: #f3efe4;
  --paper-raised: #f8f5ed;
  --ink: #1a1714;
  --muted: #3f3a34;
  --black: #000000;
  --navy: #161310;
  --navy-deep: #0c0b0a;
  --brass: #7c5e2a;
  --brass-line: #b0893e;
  --brass-bright: #f0d7a2;
  --brass-frame: #d4b06a;
  --line: #ddd4c2;
  --serif: "Fraunces", "Iowan Old Style", Palatino, "Palatino Linotype", Georgia, serif;
  --sans: "Source Sans 3", "Segoe UI", Helvetica, Arial, sans-serif;
  --wrap: 1080px;
  --header: 7.75rem;
  color-scheme: light;
}

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

html {
  scroll-padding-top: var(--header);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.6;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

main:focus {
  outline: none;
}

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

a {
  color: inherit;
}

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

::selection {
  background: var(--navy);
  color: var(--paper);
}

.skip {
  position: fixed;
  left: 0.75rem;
  top: 0.5rem;
  transform: translateY(-150%);
  z-index: 40;
  background: var(--navy);
  color: var(--paper);
  padding: 0.45rem 0.75rem;
  text-decoration: none;
}

.skip:focus {
  transform: none;
}

.wrap {
  width: min(var(--wrap), calc(100% - 2.5rem));
  margin-inline: auto;
}

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

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--black);
}

.mast {
  background: var(--black);
  color: var(--brass-bright);
}

.mast-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 0;
  padding: 0.42rem 0;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.navbar {
  border-bottom: 1px solid rgba(212, 176, 106, 0.45);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding: 0.85rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--paper);
  text-decoration: none;
}

.brand img {
  width: 42px;
  height: 42px;
  background: var(--black);
}

.brand-name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  line-height: 1;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.15rem;
}

.site-nav a {
  color: var(--paper);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.98rem;
  padding: 0.3rem 0;
  border-bottom: 1px solid transparent;
}

.site-nav a:hover {
  color: var(--brass-bright);
  border-bottom-color: var(--brass-bright);
}

/* Hero */

.hero {
  position: relative;
  background: var(--black);
  color: var(--paper);
  padding: 2.25rem 0 3.25rem;
}

.hero-layout {
  display: grid;
  gap: 1.75rem;
  align-items: center;
}

.hero-logo {
  width: min(420px, 100%);
  height: auto;
  margin-inline: auto;
  background: var(--black);
}

.hero-side {
  display: grid;
  gap: 1.5rem;
}

.hero h1,
.hero .plate-title,
.hero .standards strong {
  color: var(--paper);
}

.hero h1 {
  font-size: clamp(2.05rem, 3.5vw, 3.35rem);
}

.hero .lede,
.hero .standards span span {
  color: #e4dccb;
}

.hero .kicker,
.hero .num {
  color: var(--brass-bright);
}

.hero .btn-primary {
  background: var(--brass-frame);
  border-color: var(--brass-frame);
  color: var(--black);
}

.hero .btn-primary:hover {
  background: var(--brass-bright);
  border-color: var(--brass-bright);
}

.hero .btn-ghost {
  background: transparent;
  border-color: var(--brass-frame);
  color: var(--paper);
}

.hero .btn-ghost:hover {
  border-color: var(--brass-bright);
  color: var(--brass-bright);
}

.hero .plate,
.hero .plate-inner {
  border-color: var(--brass-frame);
  background: var(--black);
}

.hero .standards li {
  border-color: rgba(212, 176, 106, 0.35);
}

.kicker {
  margin: 0 0 0.7rem;
  color: var(--brass);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
.plate-title {
  font-family: var(--serif);
  font-weight: 600;
  color: var(--navy);
  text-wrap: balance;
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 5.1vw, 4.15rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 12em;
}

.lede {
  margin: 1.1rem 0 0;
  max-width: 40rem;
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.55;
  text-wrap: pretty;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.7rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.55rem 1.15rem;
  border: 1px solid var(--navy);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  line-height: 1.2;
}

.btn-primary {
  background: var(--navy);
  color: var(--paper);
}

.btn-primary:hover {
  background: var(--navy-deep);
}

.btn-ghost {
  background: transparent;
  color: var(--navy);
}

.btn-ghost:hover {
  border-color: var(--brass);
  color: var(--brass);
}

.plate {
  border: 1px solid var(--brass-frame);
  padding: 0.4rem;
  background: var(--paper);
}

.plate-inner {
  border: 1px solid var(--brass-frame);
  background: var(--paper-raised);
  padding: 1.15rem 1.15rem 0.4rem;
}

.plate-title {
  margin: 0;
  font-size: 1.55rem;
  letter-spacing: -0.015em;
  line-height: 1.15;
}

.standards {
  list-style: none;
  margin: 0.85rem 0 0;
  padding: 0;
}

.standards li {
  display: grid;
  grid-template-columns: 2.1rem 1fr;
  gap: 0.55rem;
  align-items: baseline;
  padding: 0.72rem 0;
  border-top: 1px solid var(--line);
}

.standards li:last-child {
  border-bottom: 1px solid var(--line);
}

.num {
  font-family: var(--serif);
  font-weight: 600;
  color: var(--brass);
  font-size: 0.95rem;
}

.standards strong {
  display: block;
  color: var(--navy);
  font-weight: 600;
}

.standards span span,
.quiet {
  color: var(--muted);
}

/* Sections */

.section {
  padding: 3.5rem 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: var(--header);
}

h2 {
  margin: 0;
  font-size: clamp(1.85rem, 3vw, 2.6rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.cards {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  padding-top: 0.85rem;
  border-top: 2px solid var(--brass-line);
}

.card h3 {
  margin: 0.35rem 0 0.4rem;
  font-size: 1.45rem;
  letter-spacing: -0.015em;
  line-height: 1.15;
}

.card p,
.split p,
.note {
  margin: 0;
  color: var(--muted);
}

.systems {
  display: grid;
  gap: 0.7rem;
  margin-top: 2.25rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.systems-label {
  margin: 0;
  color: var(--brass);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.system-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.system-list li {
  color: var(--navy);
  font-weight: 600;
  padding: 0.15rem 0.95rem;
  border-left: 1px solid var(--line);
}

.system-list li:first-child {
  padding-left: 0;
  border-left: 0;
}

.systems-note {
  margin: 0.75rem 0 0;
  color: var(--muted);
  max-width: 42rem;
}

/* Spend Automaton */

.spend-automaton {
  background: var(--black);
  color: var(--paper);
  border-top: 0;
}

.spend-automaton h2,
.spend-automaton .plate-title {
  color: var(--paper);
}

.spend-automaton .kicker,
.spend-automaton .spec dt {
  color: var(--brass-bright);
}

.spend-automaton .lede,
.spend-automaton .spec dd {
  color: var(--paper);
}

.spend-automaton-grid {
  display: grid;
  gap: 2rem;
  align-items: start;
}

.spec {
  margin: 0;
  border: 1px solid rgba(198, 161, 94, 0.75);
  padding: 0.35rem;
}

.spec-inner {
  border: 1px solid rgba(198, 161, 94, 0.75);
}

.spec-inner > div {
  display: grid;
  grid-template-columns: 6.4rem 1fr;
  gap: 0.75rem;
  padding: 0.75rem 0.95rem;
  border-top: 1px solid rgba(243, 239, 228, 0.16);
}

.spec-inner > div:first-child {
  border-top: 0;
}

.spec dt {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.spec dd {
  margin: 0;
}

/* Approach, about, contact */

.split {
  display: grid;
  gap: 1rem;
  margin-top: 1.75rem;
}

.split article {
  border: 1px solid var(--line);
  background: rgba(255, 252, 246, 0.45);
  padding: 1.25rem 1.2rem 1.35rem;
}

.split h3 {
  margin: 0 0 0.45rem;
  font-size: 1.45rem;
  letter-spacing: -0.015em;
}

.footnote {
  margin: 1.25rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
  max-width: 42rem;
  color: var(--ink);
}

.about-blurb {
  max-width: 40rem;
  margin: 1rem 0 0;
  padding-left: 1rem;
  border-left: 2px solid var(--brass-line);
  font-size: 1.2rem;
  line-height: 1.55;
  color: var(--ink);
}

.about-blurb .name {
  font-family: var(--serif);
  font-weight: 600;
  color: var(--navy);
}

.contact-grid {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

.letter {
  margin: 0;
  border: 1px solid var(--brass-frame);
  padding: 0.4rem;
  font-style: normal;
}

.letter-inner {
  border: 1px solid var(--brass-frame);
  padding: 1.15rem 1.15rem 1.25rem;
  background: var(--paper-raised);
}

.letter p {
  margin: 0;
}

.letter .mail {
  display: inline-block;
  margin-top: 0.15rem;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  line-height: 1.25;
  color: var(--navy);
  text-decoration: none;
  border-bottom: 1px solid var(--brass-line);
  overflow-wrap: anywhere;
}

.letter .mail:hover {
  border-bottom-color: var(--navy);
}

.letter-label {
  margin-top: 1.15rem !important;
  color: var(--brass);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.letter .github {
  display: inline-block;
  margin-top: 0.2rem;
  color: var(--navy);
  font-weight: 600;
  overflow-wrap: anywhere;
}

/* Footer */

.site-footer {
  background: var(--black);
  color: var(--paper);
  padding: 2rem 0 1.4rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.25rem 2rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid rgba(243, 239, 228, 0.18);
}

.footer-name {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.25rem;
}

.footer-tag {
  margin: 0.25rem 0 0;
  color: var(--brass-bright);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  align-items: flex-start;
}

.footer-links a {
  color: var(--paper);
  font-weight: 600;
  overflow-wrap: anywhere;
}

.footer-links a:hover {
  color: var(--brass-bright);
}

.footer-copy {
  margin: 0.85rem 0 0;
  color: #d9d3c6;
  font-size: 0.92rem;
}

/* Missing page */

.missing {
  padding: 4.5rem 0 5.5rem;
}

.missing h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.missing p {
  max-width: 36rem;
  color: var(--muted);
}

/* Wider layouts */

@media (min-width: 720px) {
  .systems {
    grid-template-columns: 11rem 1fr;
    align-items: center;
    column-gap: 1rem;
  }

  .contact-grid,
  .split {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }

  .contact-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2.5rem;
  }
}

@media (min-width: 880px) {
  .hero {
    padding: 2.5rem 0 3.5rem;
  }

  .hero-layout {
    grid-template-columns: minmax(260px, 0.86fr) minmax(0, 1.14fr);
    gap: 3rem;
    align-items: center;
  }

  .hero-logo {
    width: 100%;
    margin: 0;
  }

  .section {
    padding: 4.5rem 0;
  }

  .cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
  }

  .spend-automaton-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
    gap: 3.25rem;
    align-items: center;
  }
}

@media (max-width: 640px) {
  .hero-logo {
    width: min(300px, 100%);
  }
}

@media (max-width: 420px) {
  .wrap {
    width: min(var(--wrap), calc(100% - 1.75rem));
  }

  .actions {
    display: grid;
  }

  .spec-inner > div {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }

  .mast-inner span:last-child {
    display: none;
  }
}

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

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

@media (forced-colors: active) {
  .btn,
  .plate,
  .letter,
  .spec,
  .split article {
    border: 1px solid ButtonText;
  }
}

@media print {
  .site-header {
    position: static;
  }

  .site-nav,
  .actions,
  .skip {
    display: none;
  }

  .spend-automaton,
  .site-footer,
  .mast {
    background: white;
    color: black;
  }

  .spend-automaton h2,
  .spend-automaton .lede,
  .spend-automaton .spec dd,
  .footer-name,
  .footer-links a {
    color: black;
  }

  a {
    text-decoration: underline;
  }
}