/* ---------- Fonts (self-hosted, no external requests) ---------- */
@font-face {
  font-family: "Space Grotesk";
  src: url("/static/fonts/space-grotesk-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Space Grotesk";
  src: url("/static/fonts/space-grotesk-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/static/fonts/inter-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/static/fonts/inter-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/static/fonts/inter-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/static/fonts/jetbrains-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/static/fonts/jetbrains-mono-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  --ink: #0c0f14;
  --panel: #141922;
  --panel-line: #232a36;
  --fog: #7c8496;
  --paper: #e8ebf1;
  --signal-green: #4fae79;
  --signal-rust: #c1523f;
  --amber: #e2a63b;

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --maxw: 72rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

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

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--signal-green);
  text-transform: uppercase;
  margin: 0 0 1rem;
}

h1, h2 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  margin: 0;
}

/* ---------- Top bar ---------- */
.topbar {
  padding: 1.5rem 0;
}
.topbar .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.wordmark {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--paper);
}
.wordmark span { color: var(--signal-green); }
.topbar a.cta-small {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--paper);
  text-decoration: none;
  border: 1px solid var(--panel-line);
  padding: 0.5rem 1rem;
  border-radius: 3px;
  transition: border-color 0.15s ease;
}
.topbar a.cta-small:hover { border-color: var(--amber); }

/* ---------- Hero ---------- */
.hero {
  padding: 3rem 0 5rem;
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3.5rem;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.1rem, 4vw, 3rem);
}
.hero h1 .fade {
  display: block;
  color: var(--fog);
  font-weight: 500;
  font-size: 0.62em;
  margin-top: 0.6em;
}
.hero p.sub {
  color: var(--fog);
  font-size: 1.05rem;
  max-width: 34rem;
  margin: 1.5rem 0 2rem;
}

.btn-primary {
  display: inline-block;
  background: var(--amber);
  color: var(--ink);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  padding: 0.85rem 1.5rem;
  border-radius: 3px;
  border: none;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px -6px rgba(226, 166, 59, 0.5);
}

/* ---------- Diff panel (signature element) ---------- */
.diffpanel {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: 6px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.diffpanel-head {
  display: flex;
  gap: 0.4rem;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--panel-line);
}
.diffpanel-head span {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--panel-line);
}
.diffpanel-label {
  padding: 0.7rem 0.9rem 0.3rem;
  color: var(--fog);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
}
.diffpanel-body { padding: 0 0.9rem 1rem; }
.diffline {
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
  white-space: pre;
  opacity: 0;
  transform: translateX(-4px);
  animation: diffline-in 0.4s ease forwards;
}
.diffline.remove { color: var(--signal-rust); }
.diffline.remove::before { content: "− "; }
.diffline.add { color: var(--signal-green); }
.diffline.add::before { content: ""; }
.diffline.remove:nth-child(1) { animation-delay: 0.1s; }
.diffline.remove:nth-child(2) { animation-delay: 0.25s; }
.diffline.remove:nth-child(3) { animation-delay: 0.4s; }
.diffline.remove:nth-child(4) { animation-delay: 0.55s; }
.diffline.remove:nth-child(5) { animation-delay: 0.7s; }
.diffpanel-body.after .diffline.add:nth-child(1) { animation-delay: 0.9s; }
.diffpanel-body.after .diffline.add:nth-child(2) { animation-delay: 1.05s; }
.diffpanel-body.after .diffline.add:nth-child(3) { animation-delay: 1.2s; }
.diffpanel-body.after .diffline.add:nth-child(4) { animation-delay: 1.35s; }
.diffpanel-body.after .diffline.add:nth-child(5) { animation-delay: 1.5s; }

@keyframes diffline-in {
  to { opacity: 1; transform: translateX(0); }
}
@media (prefers-reduced-motion: reduce) {
  .diffline { animation: none; opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Sections ---------- */
section { padding: 4.5rem 0; border-top: 1px solid var(--panel-line); }
.section-head { max-width: 40rem; margin-bottom: 2.5rem; }
.section-head h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
.section-head p { color: var(--fog); margin-top: 1rem; }

.stack-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
}
.stack-list li {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-left: 3px solid var(--signal-green);
  padding: 0.9rem 1.1rem;
  border-radius: 3px;
  color: var(--paper);
}

/* ---------- Tiers ---------- */
.tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.25rem;
}
.tier {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: 6px;
  padding: 1.75rem;
}
.tier.highlight {
  border-color: var(--amber);
  box-shadow: 0 0 0 1px var(--amber);
}
.tier h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 0 0 0.25rem;
}
.tier .tagline {
  color: var(--fog);
  font-size: 0.85rem;
  margin: 0 0 1.25rem;
}
.tier ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.9rem;
}
.tier li {
  padding: 0.4rem 0;
  border-top: 1px solid var(--panel-line);
}
.tier li:first-child { border-top: none; }
.tier-body {
  color: var(--fog);
  font-size: 0.92rem;
  margin: 0;
}
.audience-grid {
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
}

/* ---------- Waitlist ---------- */
.waitlist {
  background: var(--panel);
}
.waitlist .wrap {
  max-width: 34rem;
  text-align: left;
}
.waitlist .wrap p { color: var(--fog); margin: 1rem 0 1.75rem; }
.waitlist .wrap .btn-primary { margin-top: 0.25rem; }

.waitlist-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}
.field-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.waitlist-form input[type="email"] {
  width: 100%;
  background: var(--ink);
  border: 1px solid var(--panel-line);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 0.85rem 1rem;
  border-radius: 3px;
}
.waitlist-form input[type="email"]::placeholder { color: var(--fog); }
.consent-label {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  color: var(--fog);
  font-size: 0.85rem;
  line-height: 1.5;
  cursor: pointer;
}
.consent-label input[type="checkbox"] {
  margin-top: 0.2rem;
  flex-shrink: 0;
}
.consent-label a { color: var(--fog); text-decoration: underline; }
.form-status {
  font-size: 0.85rem;
  min-height: 1.2em;
  margin: 0;
}
.form-status .form-success { color: var(--signal-green); margin: 0; }
.form-status .form-error { color: var(--signal-rust); margin: 0; }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--panel-line);
  padding: 2rem 0;
}
footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--fog);
  font-size: 0.85rem;
}
footer nav a {
  color: var(--fog);
  text-decoration: none;
  margin-left: 1.25rem;
}
footer nav a:hover { color: var(--paper); }

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

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero { padding: 2rem 0 3rem; }
  section { padding: 3rem 0; }
}