@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&display=swap');

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  font-size: 16px;
  scrollbar-gutter: stable both-edges;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

img, video, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

/* ─── Display headings (Space Grotesk, bold) ─── */
.display-xl {
  font-family: var(--font-display);
  font-size: var(--text-7xl);
  font-weight: var(--weight-bold);
  line-height: 0.9;
  letter-spacing: -0.04em;
}

.display-lg {
  font-family: var(--font-display);
  font-size: var(--text-6xl);
  font-weight: var(--weight-bold);
  line-height: 0.95;
  letter-spacing: -0.035em;
}

.display-md {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: var(--weight-bold);
  line-height: 1;
  letter-spacing: -0.03em;
}

/* ─── Heading hierarchy (sans-serif) ─── */
.heading-xl {
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
}

.heading-lg {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
}

.heading-md {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
}

.heading-sm {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
}

/* ─── Body text ─── */
.body-lg {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
}

.body-md {
  font-size: var(--text-md);
  line-height: var(--leading-normal);
}

.body-sm {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

/* ─── Label / overline ─── */
.label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  line-height: 1;
}

.overline {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--text-secondary);
}

/* ─── Layout ─── */
.container {
  width: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 calc(var(--container-pad) * 3);
}

.container--wide {
  max-width: var(--container-wide);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--space-section) 0;
}

.section--lg {
  padding: var(--space-section-lg) 0;
}

.section--dark {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
}

.section--white {
  background-color: var(--paper);
}

/* ─── Grid system ─── */
.grid {
  display: grid;
  gap: var(--grid-gap);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid--4,
  .grid--3,
  .grid--2 { grid-template-columns: 1fr; }
}

/* ─── Flex utilities ─── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ─── Text utilities ─── */
.text-center { text-align: center; }
.text-muted { color: var(--text-secondary); }
.text-accent { color: var(--text-accent); }
.text-inverse { color: var(--text-inverse); }
.text-balance { text-wrap: balance; }

/* ─── Visually hidden ─── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ─── Focus styles ─── */
:focus-visible {
  outline: 2px solid var(--hot);
  outline-offset: 2px;
}

/* ─── Selection ─── */
::selection {
  background: var(--blurple); /* blurple, per brand-guidelines.md */
  color: var(--white);
}