/* ═══════════════════════════════════════════════════════════
   BASE — reset, body, buttons, section headings, reveal
   ═══════════════════════════════════════════════════════════ */

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--f-body);
  background: var(--surface-page);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Spotlight — radial light follows --spot-x / --spot-y */
body.spotlight-on::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 45;
  pointer-events: none;
  background: radial-gradient(
    circle var(--spot-size) at var(--spot-x) var(--spot-y),
    color-mix(in srgb, var(--accent) 22%, transparent) 0%,
    var(--accent-glow) 18%,
    color-mix(in srgb, var(--accent) 6%, transparent) 42%,
    transparent 68%
  );
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out-quart);
  will-change: background, opacity;
}

body.spotlight-on.is-spotlight-active::before {
  opacity: 1;
}

@media (pointer: coarse) {
  body.spotlight-on::before {
    display: none;
  }
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.mono {
  font-family: var(--f-mono);
  font-size: .72rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

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

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .8rem 1.6rem;
  font-family: var(--f-body);
  font-weight: 600;
  font-size: .9rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  overflow: hidden;
  transition:
    transform var(--dur-base) var(--ease-out-quart),
    box-shadow var(--dur-base) var(--ease-out-quart),
    border-color var(--dur-base),
    color var(--dur-base),
    background var(--dur-base);
}

.btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-solid {
  background: var(--ink-900);
  color: var(--surface-0);
}

.btn-gradient {
  background-image: var(--gradient-aurora);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--ink-900);
  border-color: var(--border-subtle);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--ink-900);
  color: var(--surface-0);
  border-color: var(--ink-900);
}

.btn-subtle {
  background: var(--surface-100);
  color: var(--ink-900);
}

.btn-sm { padding: .5rem 1rem; font-size: .8rem; }
.btn-lg { padding: 1rem 2rem; font-size: 1rem; }

/* ── Shared page shell (centered, equal L/R gutters) ──────── */
.shell {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

/* ── Section primitives ───────────────────────────────────── */
.section {
  padding-block: var(--sp-7);
  padding-inline: var(--page-gutter);
  max-width: var(--page-max);
  margin-inline: auto;
}

.section-heading {
  display: grid;
  gap: .75rem;
  max-width: 40rem;
  margin-bottom: var(--sp-5);
}

.section-eyebrow {
  font-family: var(--f-mono);
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--accent-blue);
}

.section-title {
  font: var(--text-display-lg);
  letter-spacing: var(--tracking-tight);
  color: var(--ink-900);
  text-wrap: balance;
}

.section-title .split-word {
  display: inline-block;
  overflow: hidden;
  vertical-align: top;
  margin-right: 0.28em;
}

.section-title .split-word:last-child {
  margin-right: 0;
}

.section-title .split-word > span {
  display: inline-block;
  will-change: transform;
}

.section-desc {
  font: var(--text-body-md);
  color: var(--text-secondary);
}

/* ── Badge ────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: .7rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  padding: .3rem .8rem;
  border-radius: var(--radius-pill);
  text-decoration: none;
}

.badge-neutral {
  background: var(--surface-100);
  color: var(--ink-700);
}

.badge-accent {
  background: var(--accent-blue);
  color: #fff;
}

.badge-outline {
  background: transparent;
  color: var(--ink-700);
  border: 1px solid var(--border-subtle);
  transition: border-color var(--dur-base), background var(--dur-base);
}

.badge-outline:hover {
  border-color: var(--accent-blue);
  background: var(--surface-50);
}

/* ── Reveal ───────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  filter: blur(6px);
  transition:
    opacity var(--dur-reveal) var(--ease-out-quart),
    transform var(--dur-reveal) var(--ease-out-quart),
    filter var(--dur-reveal) var(--ease-out-quart);
}

.reveal.visivel {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}