/* Agent Toolkit site — built on tokens.css, following ../DESIGN.md */

:root {
  --margin: clamp(24px, 4vw, 57px);
  --content-gap: 40px;
  --section-gap: clamp(64px, 8vw, 120px);
  --gutter: 16px;
  --tint: rgba(0, 235, 115, 0.08);
}

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

html { scroll-behavior: smooth; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: var(--weight-regular);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-primary);
  background: var(--color-surface);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, ol, ul, pre { margin: 0; }
ol, ul { padding: 0; list-style: none; }

a { color: inherit; text-underline-offset: 0.2em; }

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

code, pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.875em;
}

pre {
  overflow-x: auto;
  padding: 16px 20px;
  line-height: 1.6;
  background: var(--color-primary);
  color: var(--color-surface);
}

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

.skip-link {
  position: absolute;
  left: var(--margin);
  top: -100px;
  z-index: 10;
  padding: 12px 20px;
  background: var(--color-accent);
  color: var(--color-primary);
}
.skip-link:focus { top: 12px; }

/* --- Themes --- */
[data-theme="dark"] {
  background: var(--color-primary);
  color: var(--color-surface);
}
[data-theme="light"] {
  background: var(--color-surface);
  color: var(--color-primary);
}

/* --- Type roles --- */
.display,
.headline,
.stage-word,
.step-word {
  font-family: var(--font-headline);
  font-weight: var(--weight-black);
  text-transform: uppercase;
  letter-spacing: 0;
  line-height: 1.01;
}

.headline { font-size: clamp(48px, 7vw, 90px); }

.label,
.label-sm {
  font-family: var(--font-body);
  font-weight: var(--weight-regular);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  line-height: 1.2;
}
.label { font-size: clamp(14px, 1.4vw, 18px); margin-bottom: 24px; }
.label-sm { font-size: 12px; }
.label-center { text-align: center; }

.accent { color: var(--color-accent); }

.narrow { max-width: 760px; margin-inline: auto; }

/* --- Buttons --- */
.button {
  display: inline-block;
  padding: 20px 64px;
  border-radius: 0;
  font-size: 16px;
  text-decoration: none;
  transition: background-color 0.15s, color 0.15s;
}
.button-small { padding: 12px 28px; }
.button-primary {
  background: var(--color-accent);
  color: var(--color-primary);
}
.button-primary:hover,
.button-primary:active { background: var(--color-accent-pressed); }
.button-primary:active { transform: scale(0.98); }

/* --- Logo (mask so it can take the current text color) --- */
.logo {
  display: block;
  aspect-ratio: 1417.32 / 283.46;
  background: currentColor;
  -webkit-mask: url("logo.svg") no-repeat center / contain;
  mask: url("logo.svg") no-repeat center / contain;
}

/* --- Header --- */
.site-header {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 32px;
  padding: 24px var(--margin);
}
.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
}
.brand .logo { width: clamp(112px, 12vw, 180px); }
.brand-suffix {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}
.nav-links { display: flex; gap: 32px; }
.nav-links a { text-decoration: none; }
.nav-links a:hover { color: var(--color-accent); }

@media (max-width: 860px) {
  .site-header nav,
  .brand-suffix { display: none; }
  .site-header { grid-template-columns: 1fr auto; }
}

/* --- Hero --- */
.hero {
  position: relative;
  overflow: hidden;
  min-height: min(92vh, 960px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 80px var(--margin) var(--section-gap);
}
.hero > :not(.binary) { position: relative; }
.display {
  display: flex;
  flex-direction: column;
  font-size: clamp(88px, 19vw, 350px);
  margin-bottom: var(--content-gap);
}
.hero-copy {
  max-width: 640px;
  min-width: 0;
  margin-left: auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}
.lead { font-size: clamp(20px, 2vw, 26px); line-height: 1.3; font-weight: var(--weight-book); }
.hint { font-size: 14px; }

.binary {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  font-size: clamp(32px, 6vw, 88px);
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.16;
  pointer-events: none;
  user-select: none;
}
.binary span:nth-child(odd) { align-self: flex-end; padding-right: var(--margin); }
.binary span:nth-child(even) { padding-left: 30%; }

.copy-block {
  display: flex;
  align-items: stretch;
  background: var(--tint);
}
[data-theme="light"] .copy-block { background: var(--color-primary); color: var(--color-surface); }
.copy-block code {
  flex: 1;
  min-width: 0;
  padding: 16px 20px;
  overflow-x: auto;
  white-space: nowrap;
}
.copy {
  flex: none;
  border: 0;
  border-radius: 0;
  padding: 0 24px;
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  background: var(--color-accent);
  color: var(--color-primary);
}
.copy:hover,
.copy:active { background: var(--color-accent-pressed); }

/* --- Intro --- */
.intro { padding: var(--section-gap) var(--margin); }
.intro .narrow { display: grid; gap: 24px; font-size: 18px; }
.intro-title {
  font-family: var(--font-body);
  font-weight: var(--weight-book);
  font-size: clamp(36px, 4.5vw, 60px);
  line-height: 1.1;
  margin-bottom: 16px;
}

/* --- Flow diagram --- */
.flow { padding: var(--section-gap) var(--margin); }
.flow .headline { margin-bottom: 64px; }

.pipeline {
  display: grid;
  --flow-gap: 32px;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--flow-gap);
}
.stage {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 32px 24px;
  background: var(--tint);
}
.stage-build { outline: 2px solid var(--color-accent); outline-offset: -2px; }

/* Arrow connector between stages */
.stage:not(:last-child)::after {
  content: "\2192";
  position: absolute;
  top: 40px;
  right: calc(var(--flow-gap) * -1);
  width: var(--flow-gap);
  text-align: center;
  font-family: system-ui, sans-serif;
  font-size: 24px;
  line-height: 1;
  color: var(--color-accent);
}

.stage-num { font-size: 14px; letter-spacing: 0.2em; color: var(--color-accent); }
.stage-word { font-size: clamp(32px, 3.4vw, 56px); }
.stage-cmd code { color: var(--color-accent); }
.stage-desc { font-weight: var(--weight-book); }
.artifact { margin-top: auto; padding-top: 16px; }
.artifact .label-sm { display: block; margin-bottom: 4px; color: var(--color-accent); }
.gate {
  font-size: 13px;
  padding: 8px 12px;
  background: var(--color-accent);
  color: var(--color-primary);
}
.gate code { font-size: 1em; }

.lanes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gutter);
  margin-top: 32px;
}
.lane { padding: 24px; background: var(--tint); }
.lane-auto { position: relative; }
.lane .label-sm { margin-bottom: 16px; color: var(--color-accent); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  display: flex;
  flex-direction: column;
  padding: 10px 14px;
  background: var(--color-primary);
}
.chips span { font-size: 13px; font-weight: var(--weight-book); }

@media (max-width: 1100px) {
  .pipeline { grid-template-columns: 1fr; }
  .stage:not(:last-child)::after {
    content: "\2193";
    top: auto;
    right: auto;
    bottom: calc(var(--flow-gap) * -1);
    left: 24px;
    width: auto;
    height: var(--flow-gap);
    line-height: var(--flow-gap);
  }
  .lanes { grid-template-columns: 1fr; }
}

/* --- How to use (staggered words like jvm.tech) --- */
.how { padding: var(--section-gap) var(--margin); }
.steps {
  display: grid;
  gap: var(--section-gap);
  margin-top: var(--content-gap);
}
/* The word takes its own width; the body fills the rest up to a cap, so commands fit on small desktops. */
.step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--gutter) var(--content-gap);
  align-items: end;
}
.step-word {
  grid-column: 1;
  font-size: clamp(72px, 13vw, 220px);
}
.step-body {
  grid-column: 2;
  justify-self: end;
  width: min(100%, 640px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}
.step-right { grid-template-columns: minmax(0, 1fr) auto; }
.step-right .step-word { grid-column: 2; grid-row: 1; text-align: right; }
.step-right .step-body { grid-column: 1; grid-row: 1; justify-self: start; }
.step h3 { font-size: 22px; font-weight: var(--weight-regular); }
.note { margin-top: var(--section-gap); font-size: 14px; }

@media (max-width: 860px) {
  .step,
  .step-right { grid-template-columns: minmax(0, 1fr); }
  .step-word,
  .step-body,
  .step-right .step-word,
  .step-right .step-body { grid-column: 1; grid-row: auto; text-align: left; justify-self: start; }
}

/* --- Skills --- */
.skills { padding: var(--section-gap) var(--margin); }
.skills .headline { margin-bottom: 64px; }
.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--gutter);
}
.skill {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 32px;
  background: var(--tint);
}
.skill h3 { font-size: 20px; font-weight: var(--weight-regular); color: var(--color-accent); }
.skill p { font-weight: var(--weight-book); }
.skill-tag {
  justify-self: start;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

/* --- Install --- */
.install { padding: var(--section-gap) var(--margin); }
.install .headline { margin-bottom: 64px; }
/* Columns only as narrow as the longest command, so cards wrap instead of overlapping. */
.install-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 540px), 1fr));
  gap: var(--content-gap) var(--gutter);
}
.install-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
  gap: 16px;
  min-width: 0;
}
.install-card h3 { font-size: 22px; font-weight: var(--weight-regular); }
.install .note { margin-top: var(--content-gap); }

/* --- Footer --- */
.site-footer {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--content-gap) 64px;
  align-items: end;
  padding: var(--section-gap) var(--margin) 40px;
}
.horse { width: clamp(72px, 9vw, 120px); height: auto; }
.footer-cta { display: grid; gap: var(--content-gap); justify-items: start; }
.footer-title { font-size: clamp(48px, 8vw, 120px); }
.footer-meta {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-top: var(--section-gap);
}
.footer-meta .logo { width: 140px; }
.footer-meta ul { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.footer-credits { grid-column: 1 / -1; max-width: 60ch; margin-top: var(--section-gap); }
.footer-credits + .footer-meta { margin-top: var(--content-gap); }

@media (max-width: 640px) {
  .site-footer { grid-template-columns: minmax(0, 1fr); }
  .footer-meta { flex-wrap: wrap; }
  .footer-cta .button { padding-inline: 32px; }
}