/* claude-dev-kit landing · TAM-100 · dark */

@font-face {
  font-family: 'IBM Plex Mono';
  src: url('assets/fonts/IBMPlexMono-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('assets/fonts/IBMPlexMono-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  /* unlicensed_substitute for Neue Galano ExtraBold — Montserrat ExtraBold used
     in place of the spec'd Montserrat Bold 700; only static weight on hand. */
  font-family: 'Display Sub';
  src: url('assets/fonts/Montserrat-ExtraBold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --black: #000000;
  --white: #ffffff;
  --gray-light: #f5f5f5;
  --gray-medium: #787878;
  --gray-medium-dark: #999999;
  --black-subtle: #161b22;
  --link-blue: #0000ff;
  --link-blue-dark: #79c0ff;
  --brand-yellow: #ffd923;

  --space-1: 4px;  --space-2: 8px;  --space-3: 12px; --space-4: 16px;
  --space-5: 24px; --space-6: 32px; --space-7: 48px; --space-8: 64px;
  --space-9: 96px; --space-10: 128px;

  /* dark mode roles (project mode.output = dark) */
  --surface-primary: var(--black);
  --surface-secondary: var(--black-subtle);
  --text-primary: var(--white);
  --text-secondary: var(--gray-medium-dark);
  --border-primary: var(--white);
  --accent-link: var(--link-blue-dark);
  --accent-focus: var(--brand-yellow);
}

* { box-sizing: border-box; }

/* author display rules (.btn is inline-flex) otherwise beat the UA rule for [hidden] */
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--surface-primary);
  color: var(--text-primary);
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 400;
  font-size: 20px;
  line-height: 30px;
  letter-spacing: -0.03em;
}

a { color: var(--accent-link); }

.tam-display {
  font-family: 'Display Sub', 'Montserrat', sans-serif;
  font-weight: 700;
}

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

.wrap {
  max-width: 1306px; /* 1440 viewport - 2*67pt margin */
  margin: 0 auto;
  padding: 0 var(--space-8);
}
@media (max-width: 640px) {
  .wrap { padding: 0 var(--space-5); }
}

/* header */
header.site {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: var(--space-4) 0;
  background: var(--surface-primary);
  border-bottom: 1px solid var(--surface-secondary);
}
header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.wordmark { height: 32px; width: auto; color: var(--white); }
.wordmark svg { height: 100%; width: auto; display: block; }
.header-links { display: flex; gap: var(--space-6); align-items: center; }
.btn-sm { height: 32px; padding: 0 var(--space-4); font-size: 13px; }
/* below 640px the wordmark plus a button is all that fits */
@media (max-width: 640px) {
  .header-links a:not(.btn) { display: none; }
  .header-links { gap: var(--space-3); }
}
.header-links a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.header-links a:hover { color: var(--text-primary); }
.nav-icon { width: 16px; height: 16px; flex: none; }

/* eyebrow */
.eyebrow {
  font-size: 14px;
  line-height: 20px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin: 0 0 var(--space-2);
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 var(--space-6);
  border-radius: 4px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: none;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn.primary {
  background: var(--text-primary);
  color: var(--surface-primary);
}
.btn.primary:hover { background: var(--text-secondary); }
.btn.primary:focus-visible { outline: 2px solid var(--accent-focus); outline-offset: 0; }

.btn.outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-primary);
}
.btn.outline:hover { background: var(--surface-secondary); }
.btn.outline:focus-visible { border: 2px solid var(--accent-focus); }

/* hero */
.hero { padding: var(--space-9) 0 var(--space-9); }

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-9);
  align-items: center;
}
.hero-grid > div { min-width: 0; }
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-8); }
}

.hero h1 {
  margin: 0 0 var(--space-5);
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.hero .lede {
  margin: 0 0 var(--space-5);
  max-width: 46ch;
  color: var(--text-primary);
}
.hero .lede .word { display: inline-block; }
.hero .lede .ch {
  display: inline-block;
  transition: transform 0.2s ease-out;
}

.install {
  border: 1px solid var(--border-primary);
  border-radius: 4px;
  background: var(--surface-secondary);
  padding: var(--space-4) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  max-width: 560px;
}
.install code {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px;
  color: var(--text-primary);
  overflow-x: auto;
  white-space: nowrap;
  min-width: 0;
}
.install code::before { content: "$ "; color: var(--text-secondary); }
.install button.copy {
  flex: none;
  height: 32px;
  padding: 0 var(--space-4);
  border-radius: 4px;
  border: 1px solid var(--border-primary);
  background: transparent;
  color: var(--text-primary);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px;
  cursor: pointer;
}
.install button.copy:hover { background: var(--surface-primary); }
.install button.copy:focus-visible { outline: 2px solid var(--accent-focus); outline-offset: 2px; }

.install-usage {
  border-style: dashed;
  background: transparent;
  padding: var(--space-3) var(--space-4);
  margin-top: calc(-1 * var(--space-4));
}
.install-usage code { color: var(--text-secondary); }
.install-usage code::before { content: "› "; }
.install-usage-label {
  flex: none;
  font-size: 14px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-visual {
  aspect-ratio: 1 / 1;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
}
.hero-visual canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* sections */
section { padding: var(--space-9) 0; border-top: 1px solid var(--surface-secondary); }
section h2 {
  font-size: 30px;
  line-height: 40px;
  margin: 0 0 var(--space-7);
}

/* pinned steps sequence */
.pin-section {
  height: 100vh;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
}
.pin-stack { width: 100%; }
.pin-heading { margin: 0 0 var(--space-7); }

.pin-inner {
  display: grid;
  grid-template-columns: 1fr 300px;
  align-items: start;
  gap: var(--space-9);
}
@media (max-width: 900px) { .pin-inner { grid-template-columns: 1fr; gap: var(--space-6); } }

.step-stage { position: relative; height: 260px; }
.step-panel { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-start; }
.step-panel .numeral { font-size: 30px; color: var(--text-secondary); margin: 0 0 var(--space-4); }
.step-panel h3 { font-size: 30px; line-height: 40px; font-weight: 500; margin: 0 0 var(--space-2); }
.step-panel p { margin: 0; max-width: 46ch; color: var(--text-secondary); font-size: 14px; line-height: 20px; }

@media (max-width: 900px) {
  .pin-section { height: 100svh; }
  .pin-heading { margin-bottom: var(--space-5); }
  .step-stage { height: 190px; }
  .step-panel .numeral { font-size: 24px; margin-bottom: var(--space-2); }
  .step-panel h3 { font-size: 24px; line-height: 30px; }
  .rail { gap: var(--space-3); }
  .rail-item { padding-bottom: var(--space-2); }
}

.rail { display: flex; flex-direction: column; gap: var(--space-4); }
.rail-item {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  color: var(--text-secondary);
  font-size: 14px;
  letter-spacing: 0.02em;
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--surface-secondary);
}
.rail-item .n { color: var(--text-secondary); }
.rail-item.is-active { color: var(--text-primary); }
.rail-item.is-active .n, .rail-item.is-active .t { color: var(--text-primary); }
.rail-item .bar { flex: 1; height: 1px; background: var(--surface-secondary); position: relative; overflow: hidden; }
.rail-item .bar i { position: absolute; inset: 0; width: 0%; background: var(--text-primary); display: block; }

.rail-foot {
  margin-top: var(--space-5);
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
}

.progress-top { position: absolute; top: 0; left: 0; height: 2px; background: var(--accent-focus); width: 0%; z-index: 2; }

/* gates */
.gates { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-2); }
.pill {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 var(--space-3);
  border-radius: 999px;
  border: 1px solid var(--border-primary);
  font-size: 14px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-primary);
}
@media (prefers-reduced-motion: no-preference) {
  .pill:hover { animation: pill-jump 0.4s ease; }
}
@keyframes pill-jump {
  0%   { transform: translateY(0); }
  35%  { transform: translateY(-6px); }
  65%  { transform: translateY(1px); }
  100% { transform: translateY(0); }
}

.chip-group { margin-bottom: var(--space-7); }
.chip-group:last-child { margin-bottom: 0; }
.chip-group .label {
  font-size: 14px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin: 0 0 var(--space-3);
}

/* callout */
.callout {
  background: var(--surface-secondary);
  border-radius: 4px;
  padding: var(--space-7);
}
.callout h2 { margin-bottom: var(--space-5); }
.callout p { max-width: 60ch; margin: 0 0 var(--space-6); color: var(--text-primary); }
.report-title { font-size: clamp(18px, 2.15vw, 26px); line-height: 1.3; }
/* nowrap only where the line actually fits. The longer title this replaced forced up to
   98px of horizontal scroll between 640 and 820px; re-measure if the copy grows again. */
@media (min-width: 640px) { .report-title { white-space: nowrap; } }
.report-note { font-size: 14px; line-height: 20px; color: var(--text-secondary); }

/* footer */
footer.site { padding: var(--space-7) 0 var(--space-9); }
footer.site .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}
footer.site a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
}
footer.site a:hover { color: var(--text-primary); }
footer.site .links { display: flex; gap: var(--space-6); }

/* signup form */
.signup { margin: 0 0 var(--space-5); }
.signup-fields {
  display: grid;
  align-items: start;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  max-width: 860px;
}
.field { display: flex; flex-direction: column; gap: var(--space-2); min-width: 0; }
.field label {
  font-size: 14px;
  line-height: 20px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.field input {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 16px;
  line-height: 24px;
  height: 44px;
  padding: 0 var(--space-3);
  color: var(--text-primary);
  background: var(--surface-primary);
  border: 1px solid var(--gray-medium);
  border-radius: 4px;
  min-width: 0;
}
.field input:hover { border-color: var(--text-secondary); }
.field input:focus-visible { outline: 2px solid var(--accent-focus); outline-offset: 0; border-color: var(--accent-focus); }
.field input[aria-invalid="true"] { border-color: var(--text-primary); }

.signup-fields { margin-bottom: var(--space-5); }
.signup .hint {
  font-size: 14px;
  line-height: 20px;
  color: var(--text-secondary);
  margin: 0;
}
.signup-actions { display: flex; align-items: center; gap: var(--space-5); flex-wrap: wrap; }
.signup-actions .btn { border: none; }
.signup button[disabled] { opacity: 0.5; cursor: not-allowed; }
.form-status { font-size: 14px; line-height: 20px; margin: 0; color: var(--text-secondary); max-width: 46ch; }
.form-status.ok { color: var(--text-primary); }

/* honeypot: off-screen, not display:none, so bots still fill it */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* post-copy nudge: the fast installer never scrolls, catch them at the moment of intent */
.copy-nudge {
  font-size: 14px;
  line-height: 20px;
  color: var(--text-secondary);
  margin: var(--space-5) 0 var(--space-2);
  opacity: 0;
  transition: opacity 0.35s ease;
}
.copy-nudge.in { opacity: 1; }
@media (prefers-reduced-motion: reduce) { .copy-nudge { transition: none; } }

/* thank you state: replaces the call to action in place */
.signup-done { outline: none; }
.signup-done p { max-width: 60ch; margin: 0 0 var(--space-4); }
.signup-done p:last-child { margin-bottom: 0; }

/* the reason this page exists: the repo is open source, the report is not */
.hero-offer {
  font-weight: 500;
  color: var(--text-primary);
  max-width: 54ch;
  margin: 0 0 var(--space-6);
}

/* reassurance right where the install-vs-signup doubt would land */
.install-note {
  font-size: 14px;
  line-height: 20px;
  color: var(--text-secondary);
  margin: calc(-1 * var(--space-4)) 0 var(--space-6);
}

/* OSS credibility strip: live star count, no stale numbers */
.oss-badge {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-5) 0 0;
  font-size: 14px;
  color: var(--text-secondary);
}
.oss-badge img { display: block; border-radius: 3px; }

/* anchor targets must clear the sticky header */
#get-report { scroll-margin-top: 88px; }