/* ==========================================================================
   DevForm LTD — design system
   Palette and geometry derived from the DevForm mark:
   ember #E05C15 (sampled), steel grey #7B7A7A (sampled), 18deg shear.
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root {
  /* colour */
  --forge:        #0E0F10;   /* page base */
  --forge-deep:   #08080A;   /* deepest wells, footer */
  --steel-900:    #16181A;   /* raised panel */
  --steel-800:    #1D2023;   /* panel hover */
  --steel-700:    #2A2E32;   /* hairline rules, borders */
  --steel-500:    #4A4F55;   /* disabled, faint type */
  --steel-300:    #7B7A7A;   /* sampled from wordmark — secondary type */
  --paper:        #EDEDE9;   /* primary type */
  --ember:        #E05C15;   /* sampled from mark — the accent */
  --ember-hot:    #F5822F;   /* hover / active */
  --ember-dim:    rgba(224, 92, 21, 0.14);
  --signal:       #4FB477;   /* success only */
  --warn:         #E2B33C;   /* notices only */
  --danger:       #E5484D;   /* validation errors only */

  /* geometry */
  --shear:        -18deg;    /* matches the italic lean of the DF mark */
  --shear-tan:    0.3249;    /* tan(18deg), for clip-paths */
  --rule:         1px solid var(--steel-700);

  /* type */
  --display: "Chakra Petch", "Arial Narrow", sans-serif;
  --body:    "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;

  /* rhythm */
  --gutter:  clamp(1.25rem, 4vw, 3rem);
  --section: clamp(4.5rem, 9vw, 8rem);
  --measure: 1180px;

  --masthead-bg: color-mix(in srgb, var(--forge) 82%, transparent);
  --grain-opacity: 0.05;
}

html[data-theme="light"] {
  color-scheme: light;
  --forge:        #F3F1EA;
  --forge-deep:   #E6E3D8;
  --steel-900:    #FFFDF8;
  --steel-800:    #EFECE3;
  --steel-700:    #D0CBC0;
  --steel-500:    #6A6964;
  --steel-300:    #4E4D49;
  --paper:        #141516;
  --ember:        #C44E10;
  --ember-hot:    #E05C15;
  --ember-dim:    rgba(196, 78, 16, 0.12);
  --grain-opacity: 0.03;
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  color-scheme: dark;
}
html[data-theme="light"] { color-scheme: light; }

body {
  margin: 0;
  background: var(--forge);
  color: var(--paper);
  font-family: var(--body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.01em;
  margin: 0;
  text-transform: uppercase;
}

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

:focus-visible {
  outline: 2px solid var(--ember-hot);
  outline-offset: 3px;
  border-radius: 1px;
}

::selection { background: var(--ember); color: #fff; }

/* ---------- 3. Page furniture ---------- */

/* Fine grain, echoing the cast-metal texture in the mark. */
.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Drawing-frame margin rules. */
.frame-rules {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.frame-rules::before,
.frame-rules::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--steel-700);
  opacity: 0.55;
}
.frame-rules::before { left: max(1.5rem, calc(50% - var(--measure) / 2 - 2.5rem)); }
.frame-rules::after  { right: max(1.5rem, calc(50% - var(--measure) / 2 - 2.5rem)); }

.wrap {
  width: 100%;
  max-width: var(--measure);
  margin: 0 auto;
  padding-inline: var(--gutter);
  position: relative;
  z-index: 2;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--ember);
  color: #fff;
  padding: 0.75rem 1.25rem;
  font-family: var(--mono);
  font-size: 0.8rem;
}
.skip-link:focus { left: 0; }

/* ---------- 4. Masthead ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--masthead-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: var(--rule);
}

.masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  flex-shrink: 0;
}
.brand__mark { height: 30px; width: auto; }
.brand__word { height: 15px; width: auto; }
html[data-theme="light"] .brand img {
  /* PNGs are drawn on black; invert luminance, keep ember, then punch out the field. */
  filter: invert(1) hue-rotate(180deg);
  mix-blend-mode: multiply;
}

.masthead__tools {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: var(--rule);
  color: var(--paper);
  width: 44px;
  height: 40px;
  padding: 0;
  cursor: pointer;
}
.theme-toggle__icon { width: 18px; height: 18px; display: block; }
.theme-toggle__icon--moon { display: none; }
html[data-theme="light"] .theme-toggle__icon--sun { display: none; }
html[data-theme="light"] .theme-toggle__icon--moon { display: block; }
.theme-toggle:hover { border-color: var(--steel-500); color: var(--ember); }

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-left: auto;
}
.nav__link {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--steel-300);
  padding-block: 0.4rem;
  position: relative;
  transition: color 0.18s ease;
}
.nav__link:hover { color: var(--paper); }
.nav__link[aria-current="page"] { color: var(--paper); }
.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--ember);
  transform: skewX(var(--shear));
}

.nav-toggle {
  display: none;
  background: none;
  border: var(--rule);
  color: var(--paper);
  width: 44px;
  height: 40px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--paper);
  transition: transform 0.22s ease, opacity 0.22s ease;
}
.nav-toggle span { position: relative; }
.nav-toggle span::before,
.nav-toggle span::after { content: ""; position: absolute; left: 0; }
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after  { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after  { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 5. Buttons ---------- */
/* Parallelogram shell sheared to the mark's angle; label counter-sheared. */
.btn {
  display: inline-block;
  border: none;
  background: var(--ember);
  color: #fff;
  padding: 0.95rem 2rem;
  transform: skewX(var(--shear));
  cursor: pointer;
  text-decoration: none;
  transition: background 0.18s ease, transform 0.18s ease;
}
.btn > span {
  display: block;
  transform: skewX(calc(var(--shear) * -1));
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}
.btn:hover { background: var(--ember-hot); }
.btn:active { transform: skewX(var(--shear)) translateY(1px); }
.btn:disabled { background: var(--steel-700); color: var(--steel-500); cursor: not-allowed; }

.btn--ghost {
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--steel-700);
  color: var(--paper);
}
.btn--ghost:hover { background: var(--steel-900); box-shadow: inset 0 0 0 1px var(--steel-500); }

.btn--sm { padding: 0.65rem 1.4rem; }
.btn--sm > span { font-size: 0.78rem; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  align-items: center;
}

/* Text link with a sheared underline. */
.tlink {
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ember);
  text-decoration: none;
  border-bottom: 1px solid var(--ember-dim);
  padding-bottom: 2px;
  transition: border-color 0.18s ease, color 0.18s ease;
}
.tlink:hover { color: var(--ember-hot); border-bottom-color: var(--ember-hot); }

/* ---------- 6. Section scaffolding ---------- */
.section { padding-block: var(--section); position: relative; z-index: 2; }
.section--tight { padding-block: clamp(3rem, 6vw, 4.5rem); }
.section--well { background: var(--steel-900); }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ember);
  margin: 0 0 1.5rem;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--ember);
  transform: skewX(var(--shear));
  flex-shrink: 0;
}

.section__head { max-width: 780px; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section__title {
  font-size: clamp(1.9rem, 4.2vw, 3rem);
  margin-bottom: 1.25rem;
}
.section__lede {
  color: var(--steel-300);
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  max-width: 62ch;
}

/* Diagonal cut between sections, at the mark's angle. */
.shear-rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, transparent, var(--steel-700) 12%, var(--steel-700) 88%, transparent);
  transform: skewY(-1.2deg);
  position: relative;
  z-index: 2;
}

/* ---------- 7. Hero ---------- */
.hero {
  padding-top: clamp(3.5rem, 8vw, 6.5rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
  position: relative;
  z-index: 2;
  overflow: hidden;
}
.hero::before {
  /* An ember wash raking in along the shear axis. */
  content: "";
  position: absolute;
  top: -30%;
  right: -10%;
  width: 60vw;
  height: 120%;
  background: radial-gradient(ellipse at 60% 40%, var(--ember-dim), transparent 62%);
  transform: skewX(var(--shear));
  pointer-events: none;
  z-index: -1;
}

.hero__title {
  font-size: clamp(2.6rem, 8vw, 5.4rem);
  line-height: 0.94;
  max-width: 16ch;
  margin-bottom: 1.75rem;
}
.hero__title em {
  font-style: italic;
  color: var(--ember);
  font-weight: 700;
}
.hero__lede {
  color: var(--steel-300);
  font-size: clamp(1.02rem, 1.9vw, 1.25rem);
  max-width: 58ch;
  margin-bottom: 2.5rem;
}

/* ---------- 8. Signature: the shear scrubber ---------- */
.forming {
  margin-top: clamp(3rem, 6vw, 4.5rem);
  border: var(--rule);
  background: var(--steel-900);
  position: relative;
  z-index: 2;
}

.forming__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  border-bottom: var(--rule);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel-500);
  flex-wrap: wrap;
}
.forming__state { color: var(--steel-300); }
.forming__state b { color: var(--ember); font-weight: 500; }

.forming__stage {
  position: relative;
  min-height: 340px;
  overflow: hidden;
  touch-action: pan-y;
}

.forming__panel {
  position: absolute;
  inset: 0;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.9rem;
}
.forming__panel--after {
  background: var(--forge-deep);
  /* Clip edge is redrawn by JS on drag. */
  clip-path: polygon(46% 0, 100% 0, 100% 100%, 34% 100%);
}

.forming__label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.forming__panel--before .forming__label { color: var(--steel-500); }
.forming__panel--after  .forming__label { color: var(--ember); text-align: right; }
.forming__panel--after  .forming__list  { text-align: right; }

.forming__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.85rem; }
.forming__list li { display: block; }
.forming__k {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel-500);
  margin-bottom: 0.15rem;
}
.forming__v {
  display: block;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.6vw, 1.6rem);
  line-height: 1.1;
  text-transform: uppercase;
}
.forming__panel--before .forming__v { color: var(--steel-300); }
.forming__panel--after  .forming__v { color: var(--paper); }

.forming__handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--ember);
  transform: skewX(var(--shear));
  cursor: ew-resize;
  z-index: 3;
}
.forming__grip {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 46px;
  height: 46px;
  transform: translate(-50%, -50%) skewX(calc(var(--shear) * -1));
  background: var(--ember);
  border: none;
  color: #fff;
  cursor: ew-resize;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  padding: 0;
}
.forming__grip:hover { background: var(--ember-hot); }

.forming__foot {
  border-top: var(--rule);
  padding: 0.8rem 1.25rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--steel-500);
}

/* ---------- 9. Metric strip ---------- */
.strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  border-top: var(--rule);
  border-left: var(--rule);
}
.strip__cell {
  border-right: var(--rule);
  border-bottom: var(--rule);
  padding: 1.75rem 1.5rem;
}
.strip__v {
  display: block;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  color: var(--paper);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.strip__k {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel-500);
}

/* ---------- 10. Cards with drawing brackets ---------- */
.grid { display: grid; gap: 1px; background: var(--steel-700); border: var(--rule); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

.card {
  background: var(--forge);
  padding: clamp(1.6rem, 3vw, 2.25rem);
  position: relative;
  transition: background 0.2s ease;
}
.card:hover { background: var(--steel-900); }
.card:hover .card__title { color: var(--ember); }

.card__idx {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--ember);
  display: block;
  margin-bottom: 1rem;
}
.card__title {
  font-size: 1.18rem;
  margin-bottom: 0.85rem;
  transition: color 0.2s ease;
}
.card__body { color: var(--steel-300); font-size: 0.95rem; }
.card__list {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}
.card__list li {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--steel-500);
  padding-left: 1rem;
  position: relative;
  line-height: 1.5;
}
.card__list li::before {
  content: "/";
  position: absolute;
  left: 0;
  color: var(--ember);
}

/* ---------- 11. Sequence (real ordered process) ---------- */
.steps { display: grid; gap: 0; border-top: var(--rule); }
.step {
  display: grid;
  grid-template-columns: 90px 1fr 190px;
  gap: clamp(1rem, 3vw, 2.5rem);
  padding: clamp(1.75rem, 3vw, 2.4rem) 0;
  border-bottom: var(--rule);
  align-items: start;
}
.step__n {
  font-family: var(--display);
  font-weight: 700;
  font-size: 2rem;
  font-style: italic;
  color: var(--steel-700);
  line-height: 1;
}
.step__title { font-size: 1.25rem; margin-bottom: 0.7rem; }
.step__body { color: var(--steel-300); font-size: 0.95rem; }
.step__meta {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel-500);
  line-height: 1.7;
}
.step__meta b { color: var(--ember); font-weight: 500; display: block; }

/* ---------- 12. Split content block ---------- */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.prose { color: var(--steel-300); }
.prose h3 {
  color: var(--paper);
  font-size: 1.15rem;
  margin: 2.25rem 0 0.8rem;
}
.prose h3:first-child { margin-top: 0; }
.prose p { margin-bottom: 1.1rem; }
.prose strong { color: var(--paper); font-weight: 500; }

/* Definition-style principle list. */
.tenets { list-style: none; margin: 0; padding: 0; border-top: var(--rule); }
.tenets li { border-bottom: var(--rule); padding: 1.5rem 0; }
.tenets h3 {
  font-family: var(--display);
  font-size: 1.05rem;
  text-transform: uppercase;
  margin: 0 0 0.55rem;
  display: flex;
  gap: 0.7rem;
  align-items: baseline;
}
.tenets h3::before {
  content: "—";
  color: var(--ember);
  font-family: var(--mono);
  font-size: 0.8rem;
}
.tenets p { color: var(--steel-300); font-size: 0.95rem; margin: 0; padding-left: 1.6rem; }

/* ---------- 13. Callout ---------- */
.callout {
  border: var(--rule);
  border-left: 3px solid var(--ember);
  background: var(--steel-900);
  padding: clamp(1.5rem, 3vw, 2.25rem);
}
.callout__title { font-size: 1.1rem; margin-bottom: 0.75rem; }
.callout p { color: var(--steel-300); font-size: 0.94rem; }

.notice {
  border: 1px solid rgba(226, 179, 60, 0.35);
  background: rgba(226, 179, 60, 0.07);
  color: var(--warn);
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.6;
  padding: 0.9rem 1.1rem;
  margin-bottom: 1.75rem;
}
.notice a { color: inherit; }

/* Fill-me-in placeholder, so unfinished copy is impossible to miss. */
.todo {
  background: rgba(226, 179, 60, 0.14);
  border-bottom: 1px dashed var(--warn);
  color: var(--warn);
  font-family: var(--mono);
  font-size: 0.86em;
  padding: 0 0.25em;
}

/* ---------- 14. Client desk (forms) ---------- */
.desk {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 0;
  border: var(--rule);
  background: var(--forge);
}

.desk__rail {
  border-right: var(--rule);
  background: var(--steel-900);
  padding: 0;
}
.desk__rail-head {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel-500);
  padding: 1.1rem 1.25rem;
  border-bottom: var(--rule);
}
.desk__tabs { display: flex; flex-direction: column; }
.desk__tab {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: var(--rule);
  border-left: 3px solid transparent;
  text-align: left;
  padding: 1.1rem 1.25rem;
  cursor: pointer;
  color: var(--steel-300);
  transition: background 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}
.desk__tab:hover { background: var(--steel-800); color: var(--paper); }
.desk__tab[aria-selected="true"] {
  background: var(--forge);
  color: var(--paper);
  border-left-color: var(--ember);
}
.desk__tab-code {
  display: block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--ember);
  margin-bottom: 0.3rem;
}
.desk__tab-name {
  display: block;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.95rem;
  text-transform: uppercase;
  line-height: 1.15;
}

.desk__panel { padding: clamp(1.5rem, 3.5vw, 2.75rem); min-width: 0; }
.desk__panel[hidden] { display: none; }

.desk__head { margin-bottom: 2rem; padding-bottom: 1.5rem; border-bottom: var(--rule); }
.desk__title { font-size: clamp(1.4rem, 3vw, 1.9rem); margin-bottom: 0.75rem; }
.desk__sub { color: var(--steel-300); font-size: 0.95rem; max-width: 60ch; }
.desk__sla {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel-500);
  margin-top: 1rem;
}
.desk__sla b { color: var(--ember); font-weight: 500; }

/* ---------- 15. Form controls ---------- */
.fieldset { border: 0; margin: 0 0 2.25rem; padding: 0; }
.fieldset__legend {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ember);
  padding: 0;
  margin-bottom: 1.25rem;
  display: block;
  width: 100%;
  border-bottom: var(--rule);
  padding-bottom: 0.6rem;
}

.frow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}
.frow:last-child { margin-bottom: 0; }
.field { display: flex; flex-direction: column; min-width: 0; }
.field--full { grid-column: 1 / -1; }

.field__label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel-300);
  margin-bottom: 0.5rem;
  display: flex;
  gap: 0.35rem;
  align-items: baseline;
}
.field__req { color: var(--ember); }
.field__hint {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--steel-500);
  margin-top: 0.45rem;
  line-height: 1.5;
}

.input,
.select,
.textarea {
  width: 100%;
  background: var(--steel-900);
  border: var(--rule);
  color: var(--paper);
  padding: 0.75rem 0.9rem;
  font-family: var(--body);
  font-size: 0.95rem;
  border-radius: 0;
  transition: border-color 0.16s ease, background 0.16s ease;
}
.input::placeholder, .textarea::placeholder { color: var(--steel-500); }
.input:hover, .select:hover, .textarea:hover { border-color: var(--steel-500); }
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--ember);
  background: var(--forge-deep);
  box-shadow: 0 0 0 3px var(--ember-dim);
}
.textarea { min-height: 130px; resize: vertical; line-height: 1.6; }

.select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--steel-300) 50%),
                    linear-gradient(135deg, var(--steel-300) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 12px) 50%;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 2.5rem;
  cursor: pointer;
}
.select option { background: var(--steel-900); color: var(--paper); }

.choices { display: grid; gap: 0.6rem; }
.choice {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.75rem 0.9rem;
  border: var(--rule);
  background: var(--steel-900);
  cursor: pointer;
  transition: border-color 0.16s ease, background 0.16s ease;
}
.choice:hover { border-color: var(--steel-500); }
.choice input { accent-color: var(--ember); margin: 0.25rem 0 0; flex-shrink: 0; }
.choice__text { font-size: 0.9rem; line-height: 1.5; }
.choice__text b { display: block; font-weight: 500; }
.choice__text span { color: var(--steel-500); font-family: var(--mono); font-size: 0.72rem; }
.choice:has(input:checked) { border-color: var(--ember); background: var(--ember-dim); }

.counter {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--steel-500);
  text-align: right;
  margin-top: 0.35rem;
}

.field--invalid .input,
.field--invalid .select,
.field--invalid .textarea { border-color: var(--danger); }
.field__error {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--danger);
  margin-top: 0.4rem;
  display: none;
}
.field--invalid .field__error { display: block; }

.form__actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding-top: 1.5rem;
  border-top: var(--rule);
}
.form__note {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--steel-500);
  line-height: 1.6;
  max-width: 44ch;
}
.form__status {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--danger);
  margin-top: 1rem;
}

/* Job-ticket receipt shown on submit. */
.receipt { border: var(--rule); border-top: 3px solid var(--signal); background: var(--steel-900); }
.receipt__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1.1rem 1.5rem;
  border-bottom: 1px dashed var(--steel-700);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
}
.receipt__body { padding: clamp(1.5rem, 3vw, 2.25rem); }
.receipt__ref {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.8rem, 5vw, 2.75rem);
  color: var(--paper);
  letter-spacing: 0.02em;
  margin-bottom: 0.4rem;
  word-break: break-all;
}
.receipt__reflabel {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel-500);
  margin-bottom: 1.75rem;
}
.receipt__portal {
  margin: -0.75rem 0 1.75rem;
  font-size: 0.95rem;
  line-height: 1.55;
}
.receipt__portal .tlink { font-weight: 500; }
.receipt__next { list-style: none; margin: 0 0 1.75rem; padding: 0; display: grid; gap: 0.8rem; }
.receipt__next li {
  color: var(--steel-300);
  font-size: 0.92rem;
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.55;
}
.receipt__next li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--ember);
  font-family: var(--mono);
}
.receipt__summary {
  border-top: var(--rule);
  padding-top: 1.25rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--steel-500);
}
.receipt__summary dl { display: grid; grid-template-columns: auto 1fr; gap: 0.4rem 1.25rem; margin: 0.75rem 0 0; }
.receipt__summary dt { color: var(--steel-500); }
.receipt__summary dd { color: var(--steel-300); margin: 0; word-break: break-word; }

/* ---------- 16. Contact ---------- */
.contact-list { list-style: none; margin: 0; padding: 0; border-top: var(--rule); }
.contact-list li { border-bottom: var(--rule); padding: 1.35rem 0; display: grid; gap: 0.3rem; }
.contact-list dt, .contact-list .k {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel-500);
}
.contact-list .v { font-size: 1rem; color: var(--paper); }
.contact-list .v a { color: var(--paper); text-decoration: none; border-bottom: 1px solid var(--steel-700); }
.contact-list .v a:hover { color: var(--ember); border-bottom-color: var(--ember); }

/* ---------- 17. CTA band ---------- */
.band {
  background: var(--steel-900);
  border-top: var(--rule);
  border-bottom: var(--rule);
  padding-block: clamp(3.5rem, 7vw, 5.5rem);
  position: relative;
  z-index: 2;
  overflow: hidden;
}
.band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 55%, var(--ember-dim));
  pointer-events: none;
}
.band__inner { position: relative; display: grid; gap: 2rem; }
.band__title { font-size: clamp(1.8rem, 4.5vw, 2.9rem); max-width: 18ch; }
.band__body { color: var(--steel-300); max-width: 52ch; }

/* ---------- 18. Footer ---------- */
.footer {
  background: var(--forge-deep);
  padding-block: clamp(3rem, 5vw, 4rem) 2rem;
  position: relative;
  z-index: 2;
}
.footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) repeat(3, minmax(0, 1fr));
  gap: 2.5rem;
  align-items: start;
  padding-bottom: 2.5rem;
  border-bottom: var(--rule);
}
.footer__navs {
  display: contents;
}
.footer__blurb { color: var(--steel-500); font-size: 0.9rem; max-width: 34ch; margin-top: 1.25rem; }
.footer__h {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel-500);
  margin: 0 0 1rem;
}
.footer__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; }
.footer__list li {
  color: var(--steel-300);
  font-size: 0.9rem;
}
.footer__list a {
  color: var(--steel-300);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.16s ease;
}
.footer__list a:hover { color: var(--ember); }
.footer__linkedin {
  display: inline-flex;
  align-items: center;
}
.footer__linkedin svg {
  width: 14px;
  height: 14px;
  display: block;
}
.footer__bottom {
  padding-top: 1.75rem;
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--steel-500);
}
.footer__bottom a { color: var(--steel-500); text-decoration: none; }
.footer__bottom a:hover { color: var(--ember); }

/* ---------- 19. Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- 20. Responsive ---------- */
@media (max-width: 960px) {
  .footer__top { gap: 1.5rem; }
  .step { grid-template-columns: 60px 1fr; }
  .step__meta { grid-column: 2; }
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .masthead__tools { margin-left: auto; }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--forge);
    border-bottom: var(--rule);
    padding: 0.5rem var(--gutter) 1.5rem;
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav__link { padding-block: 0.9rem; border-bottom: var(--rule); font-size: 0.85rem; }
  .nav__link[aria-current="page"]::after { display: none; }
  .nav .btn { margin-top: 1.25rem; align-self: flex-start; }

  .split { grid-template-columns: 1fr; }
  .desk { grid-template-columns: 1fr; }
  .desk__rail { border-right: 0; border-bottom: var(--rule); }
  .desk__tabs { flex-direction: row; overflow-x: auto; scrollbar-width: thin; }
  .desk__tab {
    border-bottom: 0;
    border-left: 0;
    border-top: 3px solid transparent;
    border-right: var(--rule);
    min-width: 168px;
    flex-shrink: 0;
  }
  .desk__tab[aria-selected="true"] { border-left-color: transparent; border-top-color: var(--ember); }
}

@media (max-width: 640px) {
  .frame-rules { display: none; }
  .footer__top { grid-template-columns: 1fr; gap: 2rem; }
  .forming__stage { min-height: 420px; }
  .forming__panel { padding: 1.25rem; }
  .forming__list { gap: 0.6rem; }
  .form__actions { flex-direction: column; align-items: stretch; }
  .form__actions .btn { align-self: flex-start; }
}

/* ---------- 21. Motion & print ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .masthead, .footer, .grain, .frame-rules, .band { display: none; }
  body { background: #fff; color: #000; }
}

/* ---------- 22. Additions ---------- */
@media (min-width: 900px) {
  .band__inner { grid-template-columns: 1.35fr 1fr; align-items: center; gap: 3rem; }
}

/* Capability code column on the services page (a real classifier, not a counter). */
.step__code {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ember);
  line-height: 1.6;
}

.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; list-style: none; margin: 0; padding: 0; }
.chips li {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--steel-300);
  border: var(--rule);
  background: var(--steel-900);
  padding: 0.4rem 0.85rem;
}

/* Page banner for interior pages. */
.pagehead { padding-block: clamp(3rem, 7vw, 5rem) clamp(2rem, 4vw, 3rem); position: relative; z-index: 2; }
.pagehead__title { font-size: clamp(2.2rem, 6vw, 3.8rem); max-width: 18ch; margin-bottom: 1.25rem; }
.pagehead__lede { color: var(--steel-300); font-size: clamp(1rem, 1.7vw, 1.15rem); max-width: 60ch; }

/* Price / model cards. */
.model { background: var(--forge); padding: clamp(1.6rem, 3vw, 2.25rem); display: flex; flex-direction: column; }
.model__name { font-size: 1.15rem; margin-bottom: 0.5rem; }
.model__shape {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ember);
  margin-bottom: 1.1rem;
}
.model__body { color: var(--steel-300); font-size: 0.93rem; flex: 1; }
.model__foot {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: var(--rule);
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--steel-500);
}

/* Cal.com inline embed on the contact page. */
.cal-embed {
  min-height: 720px;
  width: 100%;
  background: var(--steel-900);
  border: var(--rule);
  overflow: hidden;
}
.cal-embed iframe { width: 100%; min-height: 720px; border: 0; }
.cal-embed__fallback {
  margin-top: 1rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--steel-500);
  line-height: 1.7;
}