/* ============================================================
   DarksOpMedia — core.css
   Reset, base tipográfica y componentes globales (nav, botones,
   overlay, footer). Los estilos por sección viven en home.css.
   Contratos con main.js: .site-nav--solid/--hidden, body.nav-open,
   .nav-overlay.is-open, #progress-bar (scaleX vía JS).
   ============================================================ */

/* ---------- Reset ---------- */

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

* {
  margin: 0;
}

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

img {
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

/* ---------- Documento ---------- */

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

html {
  scrollbar-color: oklch(0.25 0 0) var(--bg-0);
}

section[id],
footer {
  scroll-margin-top: 6rem;
}

body {
  min-height: 100svh;
  background: var(--bg-0);
  color: var(--ink-2);
  font-family: var(--font);
  font-size: var(--fs-body);
  line-height: 1.65;
  overflow-x: clip;
}

body.nav-open {
  overflow: hidden;
}

::selection {
  background: var(--brand);
  color: var(--on-brand);
}

/* Scrollbar oscura */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-0);
}

::-webkit-scrollbar-thumb {
  background: oklch(0.25 0 0);
  border-radius: var(--radius-pill);
}

/* Foco visible por teclado; sin anillo en clics de ratón */
:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* ---------- Tipografía ---------- */

h1,
h2,
h3 {
  margin: 0;
  color: var(--ink);
  font-stretch: 125%;
  font-weight: 760;
  letter-spacing: -0.03em;
  line-height: 1.02;
  text-wrap: balance;
}

h1 {
  font-size: var(--fs-hero);
}

h2 {
  font-size: var(--fs-h2);
}

h3 {
  font-size: var(--fs-h3);
}

p {
  margin: 0;
}

.lead {
  font-size: var(--fs-lead);
  color: var(--ink-2);
  text-wrap: pretty;
}

/* Utilidad: medida de lectura para párrafos largos */
.measure {
  max-width: 65ch;
}

a {
  color: var(--brand-2);
  text-underline-offset: 3px;
  transition: color var(--dur-1) var(--ease-out);
}

a:hover {
  color: var(--brand);
}

/* ---------- Layout ---------- */

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

/* ---------- Skip link ---------- */

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: calc(var(--z-toast) + 10);
  padding: 0.75rem 1.3rem;
  background: var(--brand);
  color: var(--on-brand);
  font-weight: 640;
  text-decoration: none;
  border-radius: var(--radius-pill);
  transform: translateY(-250%);
}

.skip-link:focus-visible {
  transform: none;
}

/* ---------- Barra de progreso de scroll ---------- */

#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left;
  z-index: var(--z-toast);
  pointer-events: none;
}

/* ---------- Botones ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 48px;
  padding: 0.85rem 1.7rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-weight: 640;
  font-size: 1rem;
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--dur-1) var(--ease-out),
    border-color var(--dur-1) var(--ease-out),
    color var(--dur-1) var(--ease-out);
}

@media (prefers-reduced-motion: no-preference) {
  .btn {
    transition:
      transform var(--dur-1) var(--ease-out),
      background-color var(--dur-1) var(--ease-out),
      border-color var(--dur-1) var(--ease-out),
      color var(--dur-1) var(--ease-out);
  }
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  background: var(--brand);
  color: var(--on-brand);
}

.btn--primary:hover {
  background: var(--brand-2);
  color: var(--on-brand);
}

.btn--ghost {
  border-color: var(--line-2);
  color: var(--ink);
}

.btn--ghost:hover {
  border-color: var(--brand);
  color: var(--brand-2);
}

/* Verde WhatsApp: excepción de paleta permitida */
.btn--whatsapp {
  background: oklch(0.72 0.17 150);
  color: oklch(0.15 0.03 150);
}

.btn--whatsapp:hover {
  background: oklch(0.78 0.16 150);
  color: oklch(0.15 0.03 150);
}

.btn--small {
  min-height: 40px;
  padding: 0.5rem 1.1rem;
  font-size: 0.9rem;
}

.btn--large {
  padding: 1.05rem 2.2rem;
  font-size: 1.06rem;
}

/* ---------- Wordmark ---------- */

.wordmark {
  font-stretch: 125%;
  font-weight: 800;
  font-size: 1.18rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}

.wordmark b {
  color: var(--brand);
  font-weight: inherit;
}

/* ---------- Navegación fija ---------- */

.site-nav {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: var(--z-nav);
  border-bottom: 1px solid transparent;
  transition:
    background-color 0.3s,
    border-color 0.3s;
}

@media (prefers-reduced-motion: no-preference) {
  .site-nav {
    transition:
      transform var(--dur-2) var(--ease-out),
      background-color 0.3s,
      border-color 0.3s;
  }
}

.site-nav--solid {
  background: oklch(0.11 0 0 / 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.site-nav--hidden {
  transform: translateY(-100%);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 2rem;
}

.site-nav__links {
  display: flex;
  gap: 2rem;
}

.site-nav__links a {
  color: var(--ink-3);
  font-size: 0.95rem;
  text-decoration: none;
}

.site-nav__links a:hover {
  color: var(--ink);
}

.site-nav__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* ---------- Toggle hamburguesa (solo móvil) ---------- */

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink);
}

@media (prefers-reduced-motion: no-preference) {
  .nav-toggle span {
    transition: transform var(--dur-1) var(--ease-out);
  }
}

body.nav-open .nav-toggle span:first-child {
  transform: translateY(4.5px) rotate(45deg);
}

body.nav-open .nav-toggle span:last-child {
  transform: translateY(-4.5px) rotate(-45deg);
}

@media (max-width: 859px) {
  .site-nav__links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }
}

/* ---------- Overlay de navegación (móvil) ---------- */

.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: oklch(0.09 0 0 / 0.97);
  display: grid;
  place-content: center;
  text-align: center;
  gap: 2rem;
}

.nav-overlay[hidden] {
  display: none;
}

.nav-overlay nav {
  display: grid;
  gap: 0.4rem;
}

.nav-overlay nav a {
  display: block;
  font-stretch: 125%;
  font-weight: 800;
  font-size: clamp(2.2rem, 9vw, 4rem);
  line-height: 1.25;
  color: var(--ink);
  text-decoration: none;
}

.nav-overlay nav a:hover {
  color: var(--brand);
}

/* Entrada escalonada de los enlaces (solo con motion permitido) */
@media (prefers-reduced-motion: no-preference) {
  .nav-overlay nav a {
    opacity: 0;
    transform: translateY(1.2rem);
    transition:
      opacity var(--dur-2) var(--ease-out),
      transform var(--dur-2) var(--ease-out);
  }

  .nav-overlay.is-open nav a {
    opacity: 1;
    transform: none;
  }

  .nav-overlay.is-open nav a:nth-child(2) { transition-delay: 60ms; }
  .nav-overlay.is-open nav a:nth-child(3) { transition-delay: 120ms; }
  .nav-overlay.is-open nav a:nth-child(4) { transition-delay: 180ms; }
  .nav-overlay.is-open nav a:nth-child(5) { transition-delay: 240ms; }
}

.nav-overlay__meta {
  color: var(--ink-3);
  font-size: 0.9rem;
}

.nav-overlay__meta a {
  color: var(--brand-2);
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 4rem 2rem;
  background: var(--bg-0);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
}

.site-footer__brand p:last-child {
  color: var(--ink-3);
  margin-top: 0.5rem;
  max-width: 30ch;
}

.site-footer__nav,
.site-footer__legal,
.site-footer__social {
  display: grid;
  gap: 0.8rem;
  align-content: start;
}

.site-footer__nav a,
.site-footer__legal a,
.site-footer__social a {
  color: var(--ink-3);
  text-decoration: none;
}

.site-footer__nav a:hover,
.site-footer__legal a:hover,
.site-footer__social a:hover {
  color: var(--brand-2);
}

.site-footer__copy {
  margin-top: 3.5rem;
  color: var(--ink-3);
  font-size: var(--fs-small);
}

@media (max-width: 759px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ---------- Texto gigante decorativo (cierre de página) ---------- */

.footer-giant {
  font-stretch: 125%;
  font-weight: 900;
  font-size: clamp(4rem, 13.5vw, 12.5rem);
  line-height: 0.9;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  color: transparent;
  -webkit-text-stroke: 1px var(--line-2);
  user-select: none;
  padding-block: 2rem 0;
}