/* Design tokens, reset, typography and shared primitives. */

:root {
  --bg: #0b0f17;
  --bg-elevated: #111827;
  --bg-alt: #0e131d;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-strong: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e6e9f0;
  --text-muted: #9aa3b5;
  --text-faint: #6b7487;
  --accent: #f2b31a;
  --accent-soft: rgba(242, 179, 26, 0.14);
  --accent-contrast: #15110a;
  --accent-2: #6ee7f9;
  --success: #34d399;
  --error: #f87171;

  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --container: 1160px;
  --gutter: 16px;
  --header-height: 72px;
  --section-space: clamp(72px, 10vw, 128px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

@media (min-width: 720px) {
  :root { --gutter: 32px; }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0; }
h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: var(--accent); color: var(--accent-contrast); }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--gutter);
  z-index: 100;
  padding: 10px 16px;
  background: var(--accent);
  color: var(--accent-contrast);
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.skip-link:focus { top: 12px; }

.text-gradient {
  background: linear-gradient(92deg, var(--accent) 0%, #ffd166 45%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background-color 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary {
  background: var(--accent);
  color: var(--accent-contrast);
  box-shadow: 0 8px 24px -10px rgba(242, 179, 26, 0.6);
}
.btn--primary:hover { background: #ffc43d; box-shadow: 0 12px 28px -10px rgba(242, 179, 26, 0.7); }
.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn--ghost:hover { border-color: var(--text-muted); background: var(--surface); }
.btn--sm { min-height: 40px; padding: 0 18px; font-size: 0.875rem; }
.btn[disabled] { opacity: 0.6; cursor: progress; transform: none; }

/* Section scaffolding */
.section { padding-block: var(--section-space); }
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--border); }

.section__head { max-width: 680px; margin-bottom: clamp(40px, 6vw, 64px); }
.section__kicker {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.section__title { font-size: clamp(1.75rem, 3.6vw, 2.6rem); }
.section__lead { margin-top: 18px; font-size: 1.08rem; color: var(--text-muted); max-width: 62ch; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.eyebrow__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.18);
}

/* Scroll reveal: elements start hidden only when JS is running. */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.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; }
  .js .reveal { opacity: 1; transform: none; }
}