/* global.css — reset, base elements, layout primitives, utilities. */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

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

img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }

h1, h2, h3, h4 { line-height: 1.18; font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: var(--fs-4xl); }
h2 { font-size: var(--fs-3xl); }
p { color: var(--text); }

.icon { display: inline-block; vertical-align: middle; flex: 0 0 auto; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--sp-5); }

.section { padding-block: var(--sp-12); }
.section__head { text-align: center; max-width: 640px; margin: 0 auto var(--sp-8); }
.section__head h2 { margin-bottom: var(--sp-3); }
.section__head p { color: var(--muted); font-size: var(--fs-lg); }

.eyebrow {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--sp-3);
}

.hidden, [hidden] { display: none !important; }
.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;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  padding: 0.7rem 1.2rem;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  background: var(--grad-brand);
  color: var(--on-primary);
  font-weight: 600;
  font-size: var(--fs-sm);
  box-shadow: var(--sh-sm);
  transition: transform 0.15s var(--ease), box-shadow 0.2s var(--ease), filter 0.2s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--sh-glow); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.btn--sm { padding: 0.45rem 0.9rem; }
.btn--lg { padding: 0.95rem 1.6rem; font-size: var(--fs-base); }
.btn--block { width: 100%; }
.btn--ghost {
  background: var(--surface); color: var(--text); border-color: var(--border);
  box-shadow: none;
}
.btn--ghost:hover { background: var(--surface-2); border-color: var(--border-strong); box-shadow: none; }
.btn.is-busy { position: relative; color: transparent; }
.btn.is-busy::after {
  content: ''; position: absolute; width: 16px; height: 16px;
  border: 2px solid color-mix(in srgb, var(--on-primary) 40%, transparent); border-top-color: var(--on-primary); border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.btn-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-2); }

:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

@media (max-width: 720px) {
  h1 { font-size: var(--fs-3xl); }
  h2 { font-size: var(--fs-2xl); }
  .section { padding-block: var(--sp-8); }
}