/* ==========================================================================
   AviGestion — Base: reset, tipografía, utilidades, botones
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

html, body { max-width: 100%; overflow-x: hidden; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  color: var(--text-primary);
  background: var(--surface-page);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

:focus-visible {
  outline: 2.5px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 4px;
}
.on-dark :focus-visible { outline-color: var(--color-bone-000); }

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -60px;
  background: var(--color-ink-900);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top var(--dur-normal) var(--ease-standard);
}
.skip-link:focus { top: var(--space-4); }

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

.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;
}

/* ---- Tipografía ---- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-micro);
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-primary-600);
}
.eyebrow::before {
  content: "";
  width: 18px; height: 2px;
  background: var(--color-amber-500);
  border-radius: 2px;
}
.on-dark .eyebrow { color: var(--color-amber-500); }

h1, .h1 { font-family: var(--font-display); font-size: var(--fs-display); line-height: var(--lh-tight); font-weight: 600; letter-spacing: -0.01em; }
h2, .h2 { font-family: var(--font-display); font-size: var(--fs-h2); line-height: var(--lh-tight); font-weight: 600; letter-spacing: -0.005em; }
h3, .h3 { font-size: var(--fs-h3); line-height: var(--lh-snug); font-weight: 700; }
.lead { font-size: var(--fs-lead); line-height: var(--lh-snug); color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.on-dark, .on-dark p, .on-dark .lead { color: var(--text-on-dark); }
.on-dark .text-muted, .on-dark .lead { color: var(--text-on-dark-muted); }

.section-head { max-width: 640px; margin-bottom: var(--space-8); }
.section-head.centered { margin-inline: auto; text-align: center; }
.section-head > .eyebrow { margin-bottom: var(--space-3); display: inline-flex; }
.section-head > h2 { margin-top: var(--space-2); }
.section-head > .lead { margin-top: var(--space-4); }

/* ---- Botones ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.875rem 1.5rem;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.9375rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-standard),
              background-color var(--dur-fast) var(--ease-standard),
              border-color var(--dur-fast) var(--ease-standard),
              box-shadow var(--dur-fast) var(--ease-standard);
  white-space: nowrap;
  min-height: 44px;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--color-whatsapp);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-whatsapp-dark); box-shadow: var(--shadow-md); }

.btn-dark {
  background: var(--color-ink-900);
  color: #fff;
}
.btn-dark:hover { background: var(--color-primary-800); }

.btn-outline {
  background: transparent;
  border-color: var(--border-subtle);
  color: var(--text-primary);
}
.btn-outline:hover { border-color: var(--color-ink-900); }

.on-dark .btn-outline { border-color: var(--border-subtle-dark); color: var(--text-on-dark); }
.on-dark .btn-outline:hover { border-color: var(--color-bone-000); }

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  padding-inline: var(--space-3);
}
.btn-ghost:hover { color: var(--color-primary-700); }
.on-dark .btn-ghost { color: var(--text-on-dark); }
.on-dark .btn-ghost:hover { color: var(--color-amber-500); }

.btn-sm { padding: 0.6rem 1.1rem; font-size: var(--fs-small); min-height: 38px; }
.btn-block { width: 100%; }
.btn-icon-trail svg { width: 16px; height: 16px; transition: transform var(--dur-fast) var(--ease-standard); }
.btn:hover .btn-icon-trail svg { transform: translateX(2px); }

/* ---- Reveal on scroll (discreto) ---- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--dur-slow) var(--ease-standard), transform var(--dur-slow) var(--ease-standard);
}
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}