/* ==========================================================================
   Veyon Labs
   An editorial type system: warm paper, near-black ink, one signal red.
   Structure comes from hairline rules and a 12-column grid — never from
   shadows, gradients or rounded cards.

   1 Tokens · 2 Reset · 3 Grid · 4 Type · 5 Rules & labels · 6 Controls
   7 Header · 8 Hero · 9 Index rows · 10 Panels · 11 Numbered lists
   12 Figures · 13 Quotes · 14 Prose · 15 Forms · 16 FAQ · 17 Footer · 18 Motion
   ========================================================================== */

/* -------------------------------------------------------------- 1 Tokens */

:root {
  /* Paper & ink — light */
  --paper: #f3f1ec;
  --paper-2: #eceade;
  --paper-3: #e4e1d5;
  --ink: #15150f;
  --ink-2: #57564c;
  --ink-3: #85837a;
  --rule: #d4d1c4;
  --rule-strong: #b6b2a2;

  /* The one accent. Used for emphasis, never for decoration. */
  --signal: #d8351a;
  --signal-ink: #ffffff;

  --container: 1440px;
  --gutter: clamp(20px, 4.2vw, 64px);
  --gap: clamp(16px, 1.9vw, 28px);
  --section: clamp(72px, 9.5vw, 156px);
  --section-sm: clamp(48px, 6vw, 88px);

  --font-display: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-serif: "Instrument Serif", "Times New Roman", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --ease: cubic-bezier(0.2, 0.8, 0.25, 1);
  color-scheme: light;
}

:root[data-theme="dark"] {
  --paper: #121210;
  --paper-2: #1a1a17;
  --paper-3: #23231f;
  --ink: #edeae1;
  --ink-2: #9d9b91;
  --ink-3: #6f6e66;
  --rule: #2b2b26;
  --rule-strong: #43423b;

  --signal: #ff4f30;
  --signal-ink: #15150f;
  color-scheme: dark;
}

/* --------------------------------------------------------------- 2 Reset */

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

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.58;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern" 1;
  overflow-x: hidden;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
ul, ol { list-style: none; padding: 0; }

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

::selection { background: var(--signal); color: var(--signal-ink); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 12px 20px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.skip-link:focus { left: 0; }

/* ---------------------------------------------------------------- 3 Grid */

.wrap {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section); }
.section--sm { padding-block: var(--section-sm); }
.section--flush { padding-top: 0; }

.g12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}

/* Asymmetric splits — the default is off-centre, never 50/50. */
/* These set the END edge only. Using the `grid-column` shorthand here would
   also write grid-column-start, which the .start-* classes then override —
   collapsing the element to a single track. */
.span-3  { grid-column-end: span 3; }
.span-4  { grid-column-end: span 4; }
.span-5  { grid-column-end: span 5; }
.span-6  { grid-column-end: span 6; }
.span-7  { grid-column-end: span 7; }
.span-8  { grid-column-end: span 8; }
.span-9  { grid-column-end: span 9; }
.span-10 { grid-column-end: span 10; }
.span-12 { grid-column-end: span 12; }
.start-4 { grid-column-start: 4; }
.start-5 { grid-column-start: 5; }
.start-6 { grid-column-start: 6; }
.start-7 { grid-column-start: 7; }
.start-8 { grid-column-start: 8; }
.start-9 { grid-column-start: 9; }

@media (max-width: 1080px) {
  .span-3, .span-4 { grid-column-end: span 6; }
  .span-5 { grid-column-end: span 12; }
  .span-7, .span-8, .span-9, .span-10 { grid-column-end: span 12; }
  .start-4, .start-5, .start-6, .start-7, .start-8, .start-9 { grid-column-start: auto; }
}

@media (max-width: 680px) {
  .span-3, .span-4, .span-6 { grid-column-end: span 12; }
}

.cols {
  display: grid;
  gap: var(--gap);
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.flow > * + * { margin-top: 1.1rem; }
.cluster { display: flex; flex-wrap: wrap; gap: 14px 22px; align-items: center; }

/* ---------------------------------------------------------------- 4 Type */

h1, h2, h3, h4 { font-weight: 600; letter-spacing: -0.035em; line-height: 1.02; }

.display {
  font-size: clamp(3rem, 8.6vw, 7.4rem);
  line-height: 0.9;
  letter-spacing: -0.048em;
  font-weight: 600;
  text-wrap: balance;
}

.h1 {
  font-size: clamp(2.4rem, 5.6vw, 4.6rem);
  line-height: 0.96;
  letter-spacing: -0.042em;
  text-wrap: balance;
}

.h2 {
  font-size: clamp(1.75rem, 3.4vw, 2.9rem);
  line-height: 1.02;
  letter-spacing: -0.038em;
  text-wrap: balance;
}

.h3 {
  font-size: clamp(1.08rem, 1.5vw, 1.32rem);
  line-height: 1.22;
  letter-spacing: -0.022em;
}

.h4 { font-size: 0.98rem; line-height: 1.3; letter-spacing: -0.018em; }

/* The serif is the counterpoint: emphasis words, quotes, figures. Nothing else. */
.serif {
  font-family: var(--font-serif);
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.015em;
}

.lede {
  font-size: clamp(1.05rem, 1.45vw, 1.28rem);
  line-height: 1.45;
  letter-spacing: -0.017em;
  color: var(--ink);
  max-width: 34ch;
  text-wrap: pretty;
}
.lede--wide { max-width: 52ch; }

p { text-wrap: pretty; }
.muted { color: var(--ink-2); }
.quiet { color: var(--ink-3); }
.body-sm { font-size: 0.93rem; line-height: 1.55; color: var(--ink-2); }
.accent { color: var(--signal); }

/* ----------------------------------------------------- 5 Rules & labels */

.rule {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 0;
}
.rule--ink { border-top-color: var(--rule-strong); }

.label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.label--ink { color: var(--ink); }
.label--signal { color: var(--signal); }

/* A section opener: rule, then a mono label and index number on one line. */
.opener {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--ink);
  margin-bottom: clamp(34px, 4.5vw, 64px);
}
.opener__n { font-family: var(--font-mono); font-size: 0.7rem; color: var(--ink-3); letter-spacing: 0.1em; }

.meta-mono {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.02em;
  color: var(--ink-2);
}

/* ------------------------------------------------------------ 6 Controls */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 15px 24px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
    border-color 0.18s var(--ease);
}
.btn:hover { background: var(--signal); border-color: var(--signal); color: var(--signal-ink); }
.btn svg { width: 15px; height: 15px; flex: none; transition: transform 0.22s var(--ease); }
.btn:hover svg { transform: translateX(4px); }

.btn--open { background: transparent; color: var(--ink); }
.btn--open:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn--sm { padding: 11px 18px; font-size: 0.8rem; }
.btn--full { width: 100%; justify-content: space-between; }

/* Text link with a rule that draws in on hover. */
.link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  font-weight: 500;
  padding-bottom: 3px;
  background-image: linear-gradient(currentColor, currentColor);
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 100% 1px;
  transition: color 0.18s var(--ease), background-size 0.28s var(--ease);
}
.link:hover { color: var(--signal); }
.link svg { width: 14px; height: 14px; transition: transform 0.22s var(--ease); }
.link:hover svg { transform: translateX(4px); }

.link--draw { background-size: 0% 1px; }
.link--draw:hover { background-size: 100% 1px; }

.pill {
  display: inline-block;
  padding: 5px 10px;
  border: 1px solid var(--rule-strong);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.status::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--signal);
  flex: none;
}

/* -------------------------------------------------------------- 7 Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--paper);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}
.site-header.is-stuck { border-bottom-color: var(--rule); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: -0.035em;
}
.brand__mark {
  width: 1.2em;
  height: 1.2em;
  flex: none;
  align-self: center;
}
.brand__mark .ink { fill: currentColor; }
.brand__mark .sig { fill: var(--signal); }

.nav__links { display: flex; align-items: center; gap: 30px; }

.nav__links a {
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding-block: 6px;
  transition: color 0.18s var(--ease);
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--signal);
  transition: width 0.24s var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { width: 100%; }
.nav__links a[aria-current="page"] { color: var(--ink); }
.nav__links a[aria-current="page"]::after { width: 100%; background: var(--ink); }

.nav__actions { display: flex; align-items: center; gap: 12px; }
.nav__links .mobile-cta { display: none; }

.theme-toggle,
.nav__toggle {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--rule-strong);
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.theme-toggle:hover,
.nav__toggle:hover { color: var(--ink); border-color: var(--ink); }
.theme-toggle svg, .nav__toggle svg { width: 15px; height: 15px; }

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

.nav__toggle { display: none; }
.nav__toggle .icon-close { display: none; }
.nav__toggle[aria-expanded="true"] .icon-close { display: block; }
.nav__toggle[aria-expanded="true"] .icon-menu { display: none; }

@media (max-width: 940px) {
  .nav__toggle { display: grid; }
  .nav__cta { display: none; }

  .nav__links {
    position: fixed;
    inset: 72px 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0 var(--gutter) 28px;
    background: var(--paper);
    border-bottom: 1px solid var(--ink);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
  }
  .nav__links.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .nav__links li { border-top: 1px solid var(--rule); }
  .nav__links a {
    display: block;
    padding-block: 18px;
    font-size: 0.95rem;
    font-family: var(--font-display);
    letter-spacing: -0.02em;
    text-transform: none;
    color: var(--ink);
  }
  .nav__links .mobile-cta { display: block; border-top: 1px solid var(--ink); }
  .nav__links .mobile-cta a { color: var(--signal); }
}

/* ---------------------------------------------------------------- 8 Hero */

.hero { padding-block: clamp(48px, 7vw, 108px) clamp(40px, 5vw, 76px); }

.hero__top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ink);
  margin-bottom: clamp(32px, 4.5vw, 60px);
}

.hero .display { margin-bottom: clamp(30px, 4vw, 52px); }

.hero__foot {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
  align-items: end;
  padding-top: clamp(26px, 3.4vw, 44px);
  border-top: 1px solid var(--rule);
  margin-top: clamp(34px, 4.5vw, 62px);
}

/* Page hero for interior pages */
.page-hero { padding-block: clamp(40px, 5.5vw, 86px) clamp(30px, 4vw, 58px); }
.page-hero__bar {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ink);
  margin-bottom: clamp(28px, 3.6vw, 52px);
}

/* ---------------------------------------------------------- 9 Index rows */

/* The core editorial device: a numbered, ruled index. Used for work,
   services and posts so the whole site reads as one document. */
.index { border-top: 1px solid var(--ink); }

.index__row {
  display: grid;
  grid-template-columns: 56px minmax(0, 5fr) minmax(0, 4fr) 110px 24px;
  gap: var(--gap);
  align-items: baseline;
  padding-block: clamp(22px, 2.6vw, 34px);
  border-bottom: 1px solid var(--rule);
  position: relative;
  transition: color 0.2s var(--ease);
}
.index__row::before {
  content: "";
  position: absolute;
  inset: 0 calc(var(--gutter) * -0.5);
  background: var(--paper-2);
  opacity: 0;
  z-index: -1;
  transition: opacity 0.22s var(--ease);
}
.index__row:hover::before { opacity: 1; }
.index__row:hover .index__n { color: var(--signal); }
.index__row:hover .index__arrow { transform: translate(3px, -3px); color: var(--signal); }

.index__n {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  transition: color 0.2s var(--ease);
}
.index__title {
  font-size: clamp(1.25rem, 2.4vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.04;
}
.index__desc { color: var(--ink-2); font-size: 0.93rem; line-height: 1.5; }
.index__year { font-family: var(--font-mono); font-size: 0.76rem; color: var(--ink-3); }
.index__arrow {
  width: 15px;
  height: 15px;
  color: var(--ink-3);
  transition: transform 0.24s var(--ease), color 0.2s var(--ease);
}
.index__tags { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px 14px; }
.index__tags span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  text-transform: uppercase;
}

@media (max-width: 900px) {
  /* Every cell is placed explicitly — mixing auto-placement with definite rows
     here spawns an implicit 4th column and pushes the title off-screen. */
  .index__row {
    grid-template-columns: 40px minmax(0, 1fr) 20px;
    row-gap: 10px;
  }
  .index__n     { grid-column: 1; grid-row: 1; }
  .index__head  { grid-column: 2; grid-row: 1; }
  .index__desc  { grid-column: 2; grid-row: 2; }
  .index__year  { grid-column: 2; grid-row: 3; }
  .index__arrow { grid-column: 3; grid-row: 1; }
}

/* ------------------------------------------------------------- 10 Panels */

/* A panel is a hairline box. No radius, no shadow, no fill by default. */
.panel {
  border: 1px solid var(--rule);
  padding: clamp(22px, 2.6vw, 34px);
  background: transparent;
}
.panel--fill { background: var(--paper-2); border-color: transparent; }
.panel--ink { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.panel--ink .muted, .panel--ink .body-sm { color: color-mix(in srgb, var(--paper) 68%, transparent); }
.panel--ink .label { color: color-mix(in srgb, var(--paper) 55%, transparent); }
.panel--signal { background: var(--signal); color: var(--signal-ink); border-color: var(--signal); }

.panel__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--rule);
}
.panel--ink .panel__head { border-bottom-color: color-mix(in srgb, var(--paper) 22%, transparent); }

/* ------------------------------------------------- 11 Numbered lists */

.numbered { border-top: 1px solid var(--ink); }
.numbered__item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: var(--gap);
  padding-block: clamp(24px, 2.8vw, 38px);
  border-bottom: 1px solid var(--rule);
}
.numbered__n {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--signal);
  padding-top: 5px;
}
.numbered__body { display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; }
.numbered__body h3 { max-width: 22ch; }
.numbered__body p { color: var(--ink-2); max-width: 62ch; font-size: 0.97rem; }

@media (min-width: 900px) {
  .numbered__body {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
    gap: var(--gap);
    align-items: start;
  }
  .numbered__body .numbered__aside { grid-column: 2; }
}
@media (max-width: 620px) {
  .numbered__item { grid-template-columns: 1fr; gap: 8px; }
  .numbered__n { padding-top: 0; }
}

.spec-list { display: grid; gap: 9px; }
.spec-list li {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 4px;
  font-size: 0.9rem;
  color: var(--ink-2);
  line-height: 1.5;
}
.spec-list li::before {
  content: "—";
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.85;
}

/* ------------------------------------------------------------ 12 Figures */

.figures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  border-top: 1px solid var(--ink);
}
.figure {
  padding: clamp(22px, 2.6vw, 34px) 0;
  border-bottom: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
  padding-right: var(--gap);
}
.figure:last-child { border-right: 0; }
.figure__v {
  font-size: clamp(2.2rem, 4.4vw, 3.6rem);
  font-weight: 600;
  letter-spacing: -0.05em;
  line-height: 0.92;
  font-feature-settings: "tnum" 1;
}
.figure__v .unit { font-family: var(--font-serif); font-style: italic; font-weight: 400; }
.figure__k { margin-top: 12px; font-size: 0.85rem; color: var(--ink-2); line-height: 1.4; max-width: 22ch; }

@media (max-width: 680px) {
  .figure { border-right: 0; padding-right: 0; }
}

/* Client list — plain wordmarks, set as type, not logos. */
.clients {
  display: flex;
  flex-wrap: wrap;
  gap: 10px clamp(24px, 4vw, 56px);
  align-items: baseline;
}
.clients span {
  font-size: clamp(0.95rem, 1.5vw, 1.18rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--ink-3);
}

/* ------------------------------------------------------------- 13 Quotes */

.quote { max-width: 30ch; }
.quote p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.3rem, 2.3vw, 1.95rem);
  line-height: 1.22;
  letter-spacing: -0.02em;
}
.quote footer {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.quote--wide { max-width: 44ch; }

/* -------------------------------------------------------------- 14 Prose */

.prose { max-width: 66ch; }
.prose > * + * { margin-top: 1.2em; }
.prose h2 {
  margin-top: 2.2em;
  padding-top: 0.6em;
  border-top: 1px solid var(--rule);
  font-size: clamp(1.3rem, 2.2vw, 1.75rem);
  letter-spacing: -0.035em;
}
.prose h3 {
  margin-top: 1.8em;
  font-size: 1.1rem;
  letter-spacing: -0.025em;
}
.prose p, .prose li { color: var(--ink-2); font-size: 1.02rem; line-height: 1.66; }
.prose strong { color: var(--ink); font-weight: 600; }
.prose em { font-family: var(--font-serif); font-style: italic; font-size: 1.06em; }
.prose ul, .prose ol { display: grid; gap: 11px; }
.prose ul li { display: grid; grid-template-columns: 22px 1fr; }
.prose ul li::before { content: "—"; color: var(--ink-3); font-family: var(--font-mono); font-size: 0.75rem; line-height: 1.95; }
.prose ol { counter-reset: p; }
.prose ol li { display: grid; grid-template-columns: 30px 1fr; counter-increment: p; }
.prose ol li::before {
  content: counter(p, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--signal);
  line-height: 2;
}
.prose a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--rule-strong); }
.prose a:hover { color: var(--signal); text-decoration-color: var(--signal); }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  background: var(--paper-2);
  padding: 2px 6px;
}
.prose blockquote {
  padding-left: 22px;
  border-left: 2px solid var(--signal);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.2em;
  line-height: 1.35;
  color: var(--ink);
}

.prose-lede {
  font-size: clamp(1.15rem, 1.9vw, 1.55rem);
  line-height: 1.34;
  letter-spacing: -0.024em;
  color: var(--ink);
  max-width: 44ch;
  text-wrap: pretty;
}

/* Article header meta */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  align-items: baseline;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  margin-top: 26px;
}

/* Key/value data table */
.kv { border-top: 1px solid var(--ink); }
.kv__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: var(--gap);
  padding-block: 15px;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}
.kv__row dd { margin: 0; font-size: 0.95rem; font-weight: 500; letter-spacing: -0.015em; }

/* --------------------------------------------------------------- 15 Forms */

.form { display: grid; gap: 30px; }

.field { display: grid; gap: 8px; }
.field > label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* Underline-only inputs: the rule is the field. */
.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 9px 0;
  border: 0;
  border-bottom: 1px solid var(--rule-strong);
  background: transparent;
  color: var(--ink);
  font-size: 1.02rem;
  letter-spacing: -0.015em;
  transition: border-color 0.18s var(--ease);
}
.field select {
  padding-right: 22px;
  -webkit-appearance: none;
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%),
    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: right 8px center, right 3px center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  cursor: pointer;
}
.field textarea { min-height: 128px; resize: vertical; line-height: 1.5; }
.field input::placeholder, .field textarea::placeholder { color: var(--ink-3); }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-bottom-color: var(--signal);
  border-bottom-width: 1px;
}
.field input:user-invalid, .field textarea:user-invalid { border-bottom-color: var(--signal); }
.field .hint { font-size: 0.82rem; color: var(--ink-3); }

.field-row { display: grid; gap: 30px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }

.choice { display: flex; flex-wrap: wrap; gap: 8px; }
.choice > div { position: relative; }
.choice input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.choice label {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--rule-strong);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-2);
  cursor: pointer;
  transition: all 0.16s var(--ease);
}
.choice label:hover { border-color: var(--ink); color: var(--ink); }
.choice input:checked + label {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}
.choice input:focus-visible + label { outline: 2px solid var(--signal); outline-offset: 2px; }

.form__status {
  padding: 14px 16px;
  border-left: 2px solid var(--ink-3);
  background: var(--paper-2);
  font-size: 0.9rem;
  line-height: 1.5;
}
.form__status[data-state="success"] { border-left-color: var(--signal); }
.form__status[data-state="error"] { border-left-color: var(--signal); }
.form__status[hidden] { display: none; }

.honeypot {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ----------------------------------------------------------------- 16 FAQ */

.faq { border-top: 1px solid var(--ink); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary {
  display: grid;
  grid-template-columns: 64px 1fr 24px;
  gap: var(--gap);
  align-items: baseline;
  padding-block: clamp(20px, 2.2vw, 28px);
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover .faq__q { color: var(--signal); }
.faq__n { font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-3); }
.faq__q {
  font-size: clamp(1rem, 1.5vw, 1.22rem);
  font-weight: 500;
  letter-spacing: -0.026em;
  line-height: 1.25;
  transition: color 0.18s var(--ease);
}
.faq__i { position: relative; width: 13px; height: 13px; justify-self: end; align-self: center; }
.faq__i::before, .faq__i::after {
  content: "";
  position: absolute;
  background: var(--ink-2);
  transition: transform 0.24s var(--ease);
}
.faq__i::before { inset: 6px 0 auto; height: 1px; }
.faq__i::after { inset: 0 6px; width: 1px; }
.faq details[open] .faq__i::after { transform: scaleY(0); }
.faq details[open] .faq__q { color: var(--signal); }
.faq__a {
  padding: 0 0 clamp(22px, 2.4vw, 30px);
  margin-left: calc(64px + var(--gap));
  max-width: 62ch;
  color: var(--ink-2);
  font-size: 0.98rem;
  line-height: 1.6;
}
@media (max-width: 620px) {
  .faq summary { grid-template-columns: 34px 1fr 20px; }
  .faq__a { margin-left: calc(34px + var(--gap)); }
}

/* -------------------------------------------------------------- 17 Footer */

.contact-strip { border-top: 1px solid var(--ink); padding-block: clamp(48px, 6.5vw, 100px); }
.contact-strip a.display-link {
  display: inline-block;
  font-size: clamp(2rem, 6.2vw, 5rem);
  font-weight: 600;
  letter-spacing: -0.046em;
  line-height: 0.95;
  transition: color 0.2s var(--ease);
  overflow-wrap: anywhere;
}
.contact-strip a.display-link:hover { color: var(--signal); }

.site-footer { border-top: 1px solid var(--ink); padding-block: clamp(40px, 5vw, 64px) 26px; }

.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(28px, 3.4vw, 48px);
}
.footer-brand { grid-column: 1 / -1; }
@media (min-width: 720px) { .footer-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (min-width: 1000px) {
  .footer-grid { grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr)); }
  .footer-brand { grid-column: auto; }
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--rule);
}
.footer-col ul { display: grid; gap: 10px; }
.footer-col a { font-size: 0.92rem; color: var(--ink-2); transition: color 0.16s var(--ease); }
.footer-col a:hover { color: var(--signal); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: clamp(38px, 4.5vw, 64px);
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}

/* The wordmark, set large at the foot of the page. */
.wordmark {
  display: block;
  width: 100%;
  margin-top: clamp(34px, 4vw, 56px);
  font-size: clamp(3.4rem, 15.2vw, 15rem);
  font-weight: 600;
  letter-spacing: -0.055em;
  line-height: 0.82;
  color: var(--ink);
  opacity: 0.09;
  user-select: none;
  white-space: nowrap;
}

/* ---------------------------------------------------------- Graphics ----
   Every mark is built from the layout grid and coloured only with theme
   tokens, so the artwork follows light/dark automatically and never
   introduces a colour the type system doesn't already use. */

.gfx { display: block; width: 100%; height: auto; }

.gfx .s-rule   { fill: none; stroke: var(--rule); stroke-width: 1; vector-effect: non-scaling-stroke; }
.gfx .s-ink    { fill: none; stroke: var(--ink); stroke-width: 1.25; vector-effect: non-scaling-stroke; }
.gfx .s-signal { fill: none; stroke: var(--signal); stroke-width: 1.25; vector-effect: non-scaling-stroke; }
.gfx .f-ink    { fill: var(--ink); }
.gfx .f-signal { fill: var(--signal); }
.gfx .f-rule   { fill: var(--rule); }
.gfx .f-muted  { fill: var(--ink-3); }
.gfx .f-paper  { fill: var(--paper); }
.gfx .dash     { stroke-dasharray: 5 6; }

.gfx .t {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  fill: var(--ink-3);
}
.gfx .t-ink { fill: var(--ink); }

/* Plate: the framed field a project mark sits in. The mark is capped so a
   400-unit viewBox never scales up to container width and blows the type
   inside the drawing out of proportion. */
.plate {
  border: 1px solid var(--rule);
  background: var(--paper-2);
  padding: clamp(20px, 3vw, 44px);
}
.plate .gfx { max-width: 560px; margin-inline: auto; }

/* Small project mark carried in an index row. */
.gfx-glyph { width: 34px; height: 34px; margin-top: 14px; }
.index__row:hover .gfx-glyph .f-ink { fill: var(--signal); }
.gfx-glyph .f-ink, .gfx-glyph .s-ink { transition: fill 0.2s var(--ease), stroke 0.2s var(--ease); }

/* Diagram sitting inside a bordered field. */
.diagram {
  border: 1px solid var(--rule);
  background: var(--paper-2);
  padding: clamp(22px, 3.2vw, 40px) clamp(18px, 2.6vw, 34px);
}

/* A 720-unit diagram squeezed into a phone renders its labels at ~5px. Give it
   a floor and let the field scroll instead of shrinking past legibility. */
@media (max-width: 760px) {
  .diagram { overflow-x: auto; overscroll-behavior-x: contain; }
  .diagram .gfx { min-width: 620px; }
}

.unit-chart { margin-top: 18px; max-width: 132px; }

/* Placeholder copy awaiting real product facts. Deliberately loud so it
   cannot ship unnoticed — search the HTML for `todo` to find every one. */
.todo {
  padding: 1px 7px;
  border: 1px dashed var(--signal);
  color: var(--signal);
  font-family: var(--font-mono);
  font-size: 0.84em;
  letter-spacing: 0.01em;
}
.todo-block {
  display: block;
  padding: 14px 16px;
  border: 1px dashed var(--signal);
  color: var(--signal);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.65;
  letter-spacing: 0.01em;
}

/* -------------------------------------------------------------- 18 Motion */

:root.js .reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
:root.js .reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  :root.js .reveal { opacity: 1; transform: none; }
}