/* ============================================================
   Ventus Base — layout: reset, container, sections, grid
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background: var(--surface-page);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  text-wrap: balance;
}
p { margin: 0; text-wrap: pretty; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }

::selection { background: color-mix(in oklch, var(--flow-500) 28%, transparent); }

:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--focus-ring);
  border-radius: var(--radius-sm);
}

/* ---- Container: 1160px, 32px gutters (20px on mobile) ---- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---- Sections ---- */
.section { padding-block: var(--space-section); }
.section--sunken { background: var(--surface-card); border-block: 1px solid var(--border-subtle); }

.section__title {
  font-size: var(--text-3xl);
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
  margin-top: 0.75rem;
}
.section__sub {
  margin-top: 1rem;
  max-width: 60ch;
  color: var(--text-secondary);
  font-size: var(--text-md);
}

/* ---- Grid ---- */
.grid { display: grid; gap: var(--space-gap); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--split { grid-template-columns: 1.15fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }

/* page-specific grids */
.stats-grid   { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.pillars-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.teaser-grid  { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.case-grid    { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ---- Responsive breakpoint: 820px ---- */
@media (max-width: 820px) {
  :root { --gutter: 20px; }
  .grid--2, .grid--3, .grid--split { grid-template-columns: 1fr; }
}