/* ============================================================
   BBB — Global / Reset / Base Typography (Navy × Cyan Pop)
   ============================================================ */

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-body);
  background-color: var(--surface-base);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: var(--leading-tight);
  letter-spacing: -0.01em;
  color: var(--text-strong);
}

a {
  color: inherit;
  text-decoration: none;
}

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

ul {
  list-style: none;
  padding: 0;
}

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

/* --- Layout helpers ---------------------------------------- */
.container {
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
}

.container--narrow {
  width: min(100% - 2.5rem, var(--container-narrow));
  margin-inline: auto;
}

.section {
  padding-block: var(--space-section);
  position: relative;
}

/* --- Shared type elements ---------------------------------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--accent);
}

.lead {
  font-size: var(--text-lead);
  color: var(--text-muted);
  line-height: var(--leading-snug);
}

/* --- Buttons ----------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.9rem;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out-expo),
    box-shadow var(--duration-normal) var(--ease-out-expo),
    background-color var(--duration-normal) var(--ease-out-expo),
    color var(--duration-normal) var(--ease-out-expo),
    border-color var(--duration-normal) var(--ease-out-expo);
  will-change: transform;
}

/* Primary: cyan pop — dark text for contrast on bright bg */
.btn--gold {
  background: var(--accent);
  color: var(--color-dark);
  box-shadow: var(--shadow-accent);
}

.btn--gold:hover {
  transform: translateY(-3px);
  background: var(--color-cyan-deep);
  box-shadow: 0 20px 44px -16px rgba(0, 208, 255, 0.65);
  color: #ffffff;
}

/* Ghost: outline that adapts to surface */
.btn--ghost {
  border: 1px solid var(--border-hairline);
  color: var(--text-strong);
}

.btn--ghost:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  color: var(--accent);
}

/* On dark surfaces (hero / contact) */
.on-dark .btn--ghost {
  border-color: var(--border-on-dark);
  color: var(--text-on-dark);
}

.on-dark .btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn .arrow {
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.btn:hover .arrow {
  transform: translateX(4px);
}

/* --- Reveal-on-scroll (compositor-friendly) ----------------
   Progressive enhancement: only hide when JS is active (html.js).
   Without JS, content is always visible — never stuck hidden. */
.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
    transform var(--duration-slow) var(--ease-out-expo);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* --- Skip link --------------------------------------------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: var(--color-dark);
  border-radius: var(--radius-sm);
  transition: top var(--duration-fast) var(--ease-out-expo);
}

.skip-link:focus {
  top: 1rem;
}