/* Element styles — typography, links, common patterns. */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

body {
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  color: var(--color-text);
  background-color: var(--color-bg);
  /* Subtle gradient halo at the top to echo the logo's energy burst */
  background-image:
    radial-gradient(ellipse 1200px 600px at 50% -200px, rgba(79, 227, 218, 0.06), transparent 60%),
    radial-gradient(ellipse 800px 400px at 80% -100px, rgba(46, 168, 255, 0.05), transparent 60%);
  background-attachment: fixed;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.15;
  color: var(--color-text);
}

h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }

@media (min-width: 768px) {
  h1 { font-size: var(--fs-4xl); }
  h2 { font-size: var(--fs-3xl); }
}

p {
  margin: 0;
  color: var(--color-text);
}

a {
  color: var(--color-accent-2);
  transition: color 120ms ease;
}

a:hover { color: var(--color-accent-2-bright); }

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--r-sm);
  padding: 0.1em 0.4em;
}

::selection {
  background-color: rgba(79, 227, 218, 0.35);
  color: var(--color-text);
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--r-sm);
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background-color: var(--color-accent);
  color: var(--color-bg);
  padding: var(--sp-2) var(--sp-4);
  font-weight: 600;
}
.skip-link:focus { top: 0; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--sp-4);
}

@media (min-width: 768px) {
  .container { padding: 0 var(--sp-8); }
}

/* ─── Responsive hardening ───────────────────────────────────────
   Defensive rules so the site behaves on phones (≥ 320 dp), small
   tablets, and split-screen windows without per-page edits. */

html, body { overflow-x: hidden; max-width: 100%; }

code { overflow-wrap: break-word; word-break: break-word; }

pre {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@media (max-width: 768px) {
  table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
  }
}

@media (max-width: 479px) {
  h1 { font-size: 2rem; line-height: 1.2; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
}