/* ═══════════════════════════════════════════════════════════
   BASE.CSS — Reset & Global Base Styles
═══════════════════════════════════════════════════════════ */

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

html {
  scroll-behavior: smooth;
  font-size: 15px;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.custom-cursor,
body.custom-cursor * {
  cursor: none !important;
}

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

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

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* ── Selection ── */
::selection {
  background: var(--accent-dim);
  color: var(--navy);
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 4px;
}
::-webkit-scrollbar-track {
  background: var(--paper);
}
::-webkit-scrollbar-thumb {
  background: var(--rule-strong);
  border-radius: var(--radius-full);
}

/* ── Focus ── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ── Utility Classes ── */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.section-wrap {
  border-bottom: 1px solid var(--rule);
}

.section-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--section-y) var(--section-x);
}

/* ── Reveal animation ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity var(--duration-enter) ease,
    transform var(--duration-enter) var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-d1 { transition-delay: 0.10s; }
.reveal-d2 { transition-delay: 0.20s; }
.reveal-d3 { transition-delay: 0.30s; }
.reveal-d4 { transition-delay: 0.40s; }

/* ── Eyebrow section header ── */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 52px;
}
.eyebrow-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
}
.eyebrow-rule {
  flex: 1;
  height: 1px;
  background: var(--rule);
}
.eyebrow-count {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.10em;
  color: var(--ink-25);
  white-space: nowrap;
}

/* ── Tags / Chips ── */
.tg {
  font-size: 11px;
  font-weight: 300;
  color: var(--ink-60);
  background: var(--warm);
  border: 1px solid var(--rule);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
  cursor: default;
}
.tg:hover {
  color: var(--ink);
  background: rgba(27, 45, 80, 0.07);
  border-color: rgba(27, 45, 80, 0.18);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* ── Buttons ── */
.btn-navy {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--navy);
  padding: 13px 28px;
  text-decoration: none;
  display: inline-block;
  transition:
    background var(--duration-base),
    transform var(--duration-base);
}
.btn-navy:hover {
  background: var(--accent);
  transform: translateY(-2px);
}

.btn-outline {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  border: 1px solid var(--rule);
  padding: 12px 22px;
  text-decoration: none;
  display: inline-block;
  transition:
    border-color var(--duration-base),
    background var(--duration-base);
}
.btn-outline:hover {
  border-color: var(--ink);
  background: var(--ink-10);
}

.btn-ai {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--ai-gradient);
  background-size: 200% 200%;
  padding: 13px 28px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background-position var(--duration-slow), transform var(--duration-base);
  animation: gradShift 4s ease-in-out infinite alternate;
}
.btn-ai:hover {
  transform: translateY(-2px);
}
@keyframes gradShift {
  0%  { background-position: 0% 50%; }
  100%{ background-position: 100% 50%; }
}

@media (pointer: coarse) {
  body.custom-cursor,
  body.custom-cursor * {
    cursor: auto;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
}