/*
 * Oxa base styles.
 * Resets, typography defaults, and layout primitives only.
 * Component styles live next to their templates under /components/<name>/styles.css.
 */

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

html, body { margin: 0; padding: 0; }

html {
  font-family: var(--oxa-font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--oxa-text);
  background: var(--oxa-bg);
  -webkit-font-smoothing: antialiased;
  text-size-adjust: 100%;
}

body { min-height: 100vh; }

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

a { color: inherit; text-decoration: none; transition: color var(--oxa-dur) var(--oxa-ease); }
a:hover { color: var(--oxa-accent); }

h1, h2, h3, h4, h5, h6 { margin: 0 0 var(--oxa-space-3) 0; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: var(--oxa-fs-4xl); line-height: 1.05; }
h2 { font-size: var(--oxa-fs-3xl); line-height: 1.1; }
h3 { font-size: var(--oxa-fs-2xl); line-height: 1.2; }
h4 { font-size: var(--oxa-fs-xl); }

p { margin: 0 0 var(--oxa-space-3) 0; }

button, input, select, textarea { font: inherit; color: inherit; }

/* Layout primitives — small set, intentionally not a full utility framework. */

.oxa-container {
  width: 100%;
  max-width: var(--oxa-wide-width);
  margin-inline: auto;
  padding-inline: var(--oxa-space-4);
}

.oxa-content {
  max-width: var(--oxa-content-width);
  margin-inline: auto;
}

.oxa-stack > * + * { margin-top: var(--oxa-space-3); }
.oxa-stack-lg > * + * { margin-top: var(--oxa-space-5); }

.oxa-section {
  padding-block: clamp(var(--oxa-space-5), 8vw, var(--oxa-space-8));
}

.oxa-eyebrow {
  display: inline-block;
  font-size: var(--oxa-fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--oxa-muted);
}

.oxa-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--oxa-radius);
  background: var(--oxa-primary);
  color: var(--oxa-on-primary);
  font-weight: 500;
  border: 1px solid var(--oxa-primary);
  transition: transform var(--oxa-dur) var(--oxa-ease), background var(--oxa-dur) var(--oxa-ease);
}
.oxa-btn:hover { transform: translateY(-1px); color: var(--oxa-on-primary); }

.oxa-btn--ghost {
  background: transparent;
  color: var(--oxa-text);
  border-color: var(--oxa-border);
}

.oxa-grid {
  display: grid;
  gap: var(--oxa-space-4);
}

.oxa-grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.oxa-grid--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.oxa-grid--4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.oxa-card {
  background: var(--oxa-surface);
  border: 1px solid var(--oxa-border);
  border-radius: var(--oxa-radius-lg);
  padding: var(--oxa-space-4);
}

.oxa-render-error {
  background: #fff4f4;
  color: #842029;
  border: 1px solid #f5c2c7;
  padding: 0.75rem 1rem;
  border-radius: var(--oxa-radius);
  font-family: var(--oxa-font-mono);
  font-size: var(--oxa-fs-sm);
}

/* Visually-hidden helper for accessible labels. */
.oxa-sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.oxa-site-header {
  border-bottom: 1px solid var(--oxa-border);
  background: var(--oxa-bg);
  padding-block: var(--oxa-space-3);
  position: sticky; top: 0; z-index: 5;
}
.oxa-site-nav {
  display: flex; align-items: center; justify-content: space-between;
}
.oxa-site-brand { font-weight: 600; }
.oxa-site-menu {
  display: flex; gap: var(--oxa-space-3);
  list-style: none; margin: 0; padding: 0;
}
.oxa-site-menu a { color: var(--oxa-muted); }
.oxa-site-menu a:hover { color: var(--oxa-text); }

.oxa-site-footer {
  padding-block: var(--oxa-space-4);
  color: var(--oxa-muted);
  border-top: 1px solid var(--oxa-border);
}