/* Reset */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body { line-height: 1.5; -webkit-font-smoothing: antialiased; }
img, svg, video { display: block; max-width: 100%; }
input, button, select, textarea { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
:focus-visible { outline: 2px solid var(--color-teal-600); outline-offset: 2px; border-radius: 2px; }

/* Body */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: 400;
  color: var(--color-text-primary);
  background: var(--color-bg);
  text-rendering: optimizeLegibility;
}

/* Typography */
h1, h2, h3, h4, h5, h6 { font-weight: 500; line-height: 1.15; letter-spacing: -0.01em; color: var(--color-text-primary); }
h1 { font-size: var(--fs-h1); letter-spacing: -0.02em; }
h2 { font-size: var(--fs-h2); letter-spacing: -0.015em; }
h3 { font-size: var(--fs-h3); }
p { color: var(--color-text-secondary); }

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: var(--space-4);
  background: var(--color-navy-800);
  color: white;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--fs-small);
  z-index: 1000;
  transition: top 0.15s;
}
.skip-link:focus { top: var(--space-4); }

/* Visually hidden, accessible to screen readers */
.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;
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-5);
}