/* ==========================================================================
   BASE — Nerego Studio
   Estilos globales: body, headings, links, focus, selección, scrollbar.
   Requiere: reset.css y tokens.css cargados antes.
   ========================================================================== */

/* --------------------------------------------------------------------------
   BODY
-------------------------------------------------------------------------- */
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--leading-relaxed);
  color: var(--color-text-primary);
  background-color: var(--color-bg);
}

/* --------------------------------------------------------------------------
   HEADINGS
   Fuente display con tracking ajustado en titulares grandes.
-------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--text-hero);
  letter-spacing: var(--tracking-tighter);
  line-height: var(--leading-none);
}

h2 {
  font-size: var(--text-4xl);
  letter-spacing: var(--tracking-tight);
}

h3 {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-tight);
}

h4 {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-snug);
}

h5 {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-normal);
}

h6 {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-normal);
}

/* --------------------------------------------------------------------------
   PÁRRAFOS Y CUERPO
-------------------------------------------------------------------------- */
p {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 65ch;
}

strong, b {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

small {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   LINKS
-------------------------------------------------------------------------- */
a {
  color: var(--color-accent-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--duration-fast) var(--ease-in-out),
              text-decoration-color var(--duration-fast) var(--ease-in-out);
}

a:hover {
  color: var(--color-accent-primary-hover);
  text-decoration-color: var(--color-accent-primary-hover);
}

/* --------------------------------------------------------------------------
   FOCUS VISIBLE
   Accesible, consistente, usa el acento primario.
-------------------------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Quitar outline en click con ratón (solo en teclado) */
:focus:not(:focus-visible) {
  outline: none;
}

/* --------------------------------------------------------------------------
   SELECCIÓN DE TEXTO
-------------------------------------------------------------------------- */
::selection {
  background-color: var(--color-accent-primary);
  color: var(--color-text-on-accent);
}

/* --------------------------------------------------------------------------
   SCROLLBAR (Webkit — Chrome, Safari, Edge)
   Sutil, coherente con la paleta. Sin quitar funcionalidad.
-------------------------------------------------------------------------- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-strong);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-strong) transparent;
}

/* --------------------------------------------------------------------------
   CONTENEDOR PRINCIPAL
   Utility reutilizable en todos los archivos.
-------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* --------------------------------------------------------------------------
   SEPARADORES
-------------------------------------------------------------------------- */
hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin-block: var(--space-6);
}

/* --------------------------------------------------------------------------
   CÓDIGO INLINE
-------------------------------------------------------------------------- */
code {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.875em;
  background: var(--color-surface-alt);
  color: var(--color-accent-primary);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

/* --------------------------------------------------------------------------
   EYEBROW — label de sección pequeño en mayúsculas
   Clase utilitaria usada antes de H2 en todas las secciones.
-------------------------------------------------------------------------- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-accent-primary);
}

/* --------------------------------------------------------------------------
   SCROLL REVEAL — estado inicial y estado visible
   JS añade .js-reveal a los elementos y .is-revealed al entrar al viewport.
-------------------------------------------------------------------------- */
.js-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity   600ms cubic-bezier(0.16, 1, 0.3, 1) var(--reveal-delay, 0ms),
    transform 600ms cubic-bezier(0.16, 1, 0.3, 1) var(--reveal-delay, 0ms);
}

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

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

/* --------------------------------------------------------------------------
   VISUALLY HIDDEN — accesibilidad
   Oculto visualmente pero legible por screen readers.
-------------------------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}