/* css/base.css — reset, base elements, utility classes */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }
h1, h2, h3, h4, p { margin: 0; }

:focus-visible {
  outline: 2px solid var(--color-sapphire-400);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--color-sapphire-500);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  z-index: 1000;
  transition: top 200ms ease-out;
}
.skip-link:focus { top: 1rem; }

.container {
  width: min(100% - 3rem, 1440px);
  margin-inline: auto;
}

.text-display {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-size: clamp(2.5rem, 3vw + 1.5rem, 4.5rem);
}
.text-h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.875rem, 2vw + 1rem, 2.25rem);
  letter-spacing: -0.01em;
}
.text-h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
}
.text-body { font-family: var(--font-sans); }
.text-mono { font-family: var(--font-mono); }

.eyebrow {
  color: var(--color-sapphire-400);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  margin: 0 0 var(--space-2);
}

.section {
  padding-block: clamp(3.5rem, 7vw, 6.5rem);
  padding-inline: 1.5rem;
}
.section--surface { background: var(--color-bg-surface); }
.section-heading {
  text-align: center;
  max-width: 44rem;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}
.section-heading .text-body { margin-top: var(--space-4); color: var(--color-text-muted); }

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: var(--radius-lg);
  padding: 1rem 2rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 220ms cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 220ms ease-out, background-color 200ms ease-out, border-color 200ms ease-out;
  text-align: center;
}
.cta--primary { background: var(--color-sapphire-500); color: #fff; box-shadow: var(--shadow-glow-sapphire); }
.cta--secondary { background: transparent; color: var(--color-text-primary); border-color: var(--color-border-subtle); }
.cta--inline { width: 100%; }
.cta--sm { padding: 0.65rem 1.25rem; font-size: 0.9rem; }
.cta:disabled { opacity: 0.55; cursor: not-allowed; }

@media (prefers-reduced-motion: no-preference) {
  .cta:hover:not(:disabled) { transform: translateY(-2px) scale(1.02); }
  .cta--secondary:hover:not(:disabled) { background: rgb(255 255 255 / 0.06); }
}

.card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}
@media (prefers-reduced-motion: no-preference) {
  .card--interactive {
    transition: transform 220ms cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 220ms ease-out;
  }
  .card--interactive:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-bg-surface-2);
  font-size: 0.8rem;
  color: var(--color-slate-200);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

@media (prefers-reduced-motion: no-preference) {
  /* [data-reveal] opts a specific element into the staggered fade-up (hero copy, etc.).
     .section-heading gets the same treatment automatically on every section site-wide, so each
     module visibly settles into place as a visitor scrolls from one to the next, instead of just
     appearing. Both are driven by the same IntersectionObserver in js/hero-visual.js. */
  [data-reveal],
  .section-heading {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 420ms ease-out, transform 420ms cubic-bezier(0.2, 0.8, 0.2, 1);
  }
  [data-reveal].is-visible,
  .section-heading.is-visible { opacity: 1; transform: none; }
  [data-reveal="0"] { transition-delay: 0ms; }
  [data-reveal="1"] { transition-delay: 80ms; }
  [data-reveal="2"] { transition-delay: 160ms; }
  [data-reveal="3"] { transition-delay: 240ms; }
  [data-reveal="4"] { transition-delay: 320ms; }
}