/* ==========================================================================
   Reset + fundamentos
   ========================================================================== */

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

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

body {
  margin: 0;
  background: var(--white);
  color: var(--ink-900);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

h1,
h2,
h3,
h4,
p,
figure {
  margin: 0;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  text-wrap: balance;
}

::selection {
  background: var(--gold-400);
  color: var(--navy-950);
}

:focus-visible {
  outline: 2px solid var(--gold-400);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   Layout
   ========================================================================== */

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

.container--wide {
  max-width: 1680px;
}

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

.section--dark {
  background: var(--gradient-navy);
  color: var(--white);
}

.section--paper {
  background: var(--paper);
}

.section-head {
  max-width: 46rem;
  margin-bottom: var(--space-9);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--gold-500);
  margin-bottom: var(--space-4);
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--gold-500);
  display: block;
}

.section--dark .eyebrow {
  color: var(--gold-400);
}

.section-title {
  font-size: var(--fs-2xl);
  text-transform: uppercase;
}

.section-sub {
  margin-top: var(--space-4);
  font-size: var(--fs-md);
  color: var(--ink-500);
  line-height: var(--lh-relaxed);
}

.section--dark .section-sub {
  color: var(--silver-300);
}

/* ==========================================================================
   Botones
   ========================================================================== */

.btn {
  --btn-fg: var(--white);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.95em 1.9em;
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  border-radius: var(--radius-pill);
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
  will-change: transform;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--gradient-gold);
  color: var(--navy-950);
  box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
  box-shadow: 0 16px 40px rgba(201, 160, 75, 0.38);
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--line-light);
  backdrop-filter: blur(6px);
}

.btn-ghost:hover {
  border-color: var(--gold-400);
  background: rgba(255, 255, 255, 0.06);
}

.btn svg {
  width: 1em;
  height: 1em;
}

/* ==========================================================================
   Utilidades de animación on-scroll
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
  transition-delay: calc(var(--reveal-delay, 0) * 1ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--scale {
  transform: scale(0.94);
}

.reveal--scale.is-visible {
  transform: scale(1);
}

.reveal--left {
  transform: translateX(-32px);
}

.reveal--left.is-visible {
  transform: translateX(0);
}

.reveal--right {
  transform: translateX(32px);
}

.reveal--right.is-visible {
  transform: translateX(0);
}

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

.text-gold {
  color: var(--gold-500);
}

.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;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -60px;
  z-index: 1000;
  background: var(--gold-500);
  color: var(--navy-950);
  padding: 0.75em 1.25em;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top var(--dur-fast) var(--ease-out);
}

.skip-link:focus {
  top: var(--space-4);
}