/* ============================================================
   base.css — reset, typography, layout primitives
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 600; line-height: 1.08; letter-spacing: -0.02em; }

a { color: inherit; text-decoration: none; }

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

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

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

/* Layout primitives */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }

.app { flex: 1 0 auto; padding-block: 48px 96px; outline: none; }

.section { padding-block: 56px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-3);
}

.lead { color: var(--text-2); font-size: 1.05rem; max-width: 60ch; }

/* Accessibility helpers */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: -60px; left: 12px; z-index: 200;
  background: var(--text); color: #000; padding: 10px 16px; border-radius: var(--radius-sm);
  font-weight: 600; transition: top var(--t-fast);
}
.skip-link:focus { top: 12px; }

/* Entry animation used by views */
@keyframes rise { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.rise { animation: rise var(--t-slow) both; }
.rise-1 { animation-delay: .04s; }
.rise-2 { animation-delay: .10s; }
.rise-3 { animation-delay: .16s; }
.rise-4 { animation-delay: .22s; }

/* Grids */
.grid { display: grid; gap: 20px; }
@media (min-width: 640px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }