/* Reset + base typography */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 600; line-height: var(--lh-tight); }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: 0; padding: 0; color: inherit; }
input, textarea, select { font: inherit; color: inherit; }
input:focus, textarea:focus, select:focus, button:focus, a:focus { outline: 0; }

/* Visible focus ring for keyboard users */
input:focus-visible, textarea:focus-visible, select:focus-visible,
button:focus-visible, a:focus-visible, [data-stars-input]:focus-visible {
  box-shadow: 0 0 0 3px rgba(31, 168, 138, 0.35);
  border-color: var(--color-primary) !important;
}

/* Layout primitives */
.container {
  width: 100%;
  max-width: 720px;
  margin-inline: auto;
  padding-inline: var(--space-5);
}
.container--wide { max-width: 1100px; }
.container--narrow { max-width: 540px; }

.stack > * + * { margin-top: var(--space-4); }
.stack-lg > * + * { margin-top: var(--space-6); }

.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary-dark); }
.text-mono { font-family: var(--font-mono); }

.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;
}

[hidden] { display: none !important; }

/* Page background applied per page via body class — defaults */
body { background: var(--gradient-page); }