/* Exar Design System — base component styles
 * Loaded after tokens.css. Sites layer their section-specific CSS in src/style.css.
 * Shared across all *.exarlabs.com surfaces for brand recognition.
 */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 5.5rem;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---- Typography ---- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.07;
  letter-spacing: -0.02em;
  margin: 0 0 0.6rem;
  color: var(--ink);
}
h1 { font-size: clamp(2.4rem, 5.2vw, 4rem); }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.6rem); }
h3 { font-size: var(--text-xl); letter-spacing: -0.01em; }
h4 { font-size: var(--text-lg); }

p { margin: 0 0 1rem; max-width: 70ch; }
strong { font-weight: 700; }

a {
  color: var(--navy-700);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--t);
}
a:hover { color: var(--navy-800); }

:focus-visible {
  outline: 3px solid var(--clay-500);
  outline-offset: 2px;
  border-radius: 3px;
}

.skip-to-content {
  position: absolute; left: -9999px; top: 0;
  background: var(--navy-700); color: var(--on-navy);
  padding: 0.6rem 1rem; z-index: 100; border-radius: 0 0 var(--radius-sm) 0;
  text-decoration: none;
}
.skip-to-content:focus { left: 0; }

/* ---- Layout ---- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }
.container-narrow { max-width: var(--maxw-narrow); }
section { padding: clamp(3rem, 7vw, 5.5rem) 0; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.9rem 1.5rem; border-radius: var(--radius-sm);
  font-family: var(--font-body); font-weight: 600; font-size: 1rem;
  text-decoration: none; border: 1.5px solid transparent; cursor: pointer;
  transition: transform var(--t), background var(--t), border-color var(--t), color var(--t);
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--clay-500); color: var(--navy-900); border-color: var(--clay-500); }
.btn-primary:hover { background: var(--clay-400); border-color: var(--clay-400); color: var(--navy-900); }
.btn-secondary { background: transparent; color: var(--navy-700); border-color: var(--line-strong); }
.btn-secondary:hover { border-color: var(--navy-700); background: var(--navy-100); }

/* ---- Header (sticky, translucent) ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: oklch(0.987 0.004 250 / 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 0.8rem 0; }
.logo-link { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--ink); }
.logo-link:hover { color: var(--ink); }
.logo-wordmark { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; letter-spacing: -0.01em; }

/* ---- Cards (shared affordance) ---- */
.card {
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 1.6rem; background: var(--bg); box-shadow: var(--shadow-sm);
}

/* ---- Forms ---- */
input, textarea, select {
  font: inherit; padding: 0.7rem 0.8rem;
  border: 1.5px solid var(--line-strong); border-radius: var(--radius-sm);
  background: var(--bg); color: var(--ink);
}
input:focus, textarea:focus, select:focus { border-color: var(--navy-700); outline: none; }

img { max-width: 100%; height: auto; }

/* ---- Footer (navy band) ---- */
.site-footer { padding: 2.6rem 0; background: var(--navy-900); color: var(--on-navy-muted); }
.footer-trust { font-weight: 600; color: var(--on-navy); font-family: var(--font-display); font-size: 1.05rem; }
.site-footer a { color: var(--on-navy-muted); }
.site-footer a:hover { color: var(--on-navy); }

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}