/* ==========================================================================
   La Casita del Arte — main.css
   Fundacion visual: variables, reset, tipografia, layout base, header, footer.
   Mobile-first. CSS puro, sin frameworks.
   ========================================================================== */

:root {
  /* ---- Paleta de marca (evolucion premium del turquesa/rosa original) ---- */
  --color-teal-900: #0f4f4d;
  --color-teal-700: #157873;
  --color-teal-600: #1c8f89;
  --color-teal-500: #24a49d;
  --color-teal-400: #3fc2ba;
  --color-teal-200: #a9e4df;
  --color-teal-100: #dcf2ef;
  --color-teal-050: #f1faf9;

  --color-rose-700: #a8355c;
  --color-rose-600: #c74672;
  --color-rose-500: #e0567f;
  --color-rose-300: #f0a9c0;
  --color-rose-100: #fbe3ea;

  --color-clay-700: #7a4a2c;
  --color-clay-500: #b1703f;
  --color-clay-300: #d9ab7c;
  --color-clay-100: #f1e0c9;

  --color-paper: #fbf6ee;
  --color-paper-alt: #f4ecdd;
  --color-ink: #2c2521;
  --color-ink-soft: #5a4f47;
  --color-white: #ffffff;

  /* ---- Tipografia (100% fuentes de sistema, sin CDN) ---- */
  --font-display: Georgia, "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
  --font-body: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* ---- Escala tipografica fluida ---- */
  --fs-xs: clamp(0.78rem, 0.74rem + 0.2vw, 0.86rem);
  --fs-sm: clamp(0.9rem, 0.86rem + 0.2vw, 1rem);
  --fs-base: clamp(1rem, 0.96rem + 0.25vw, 1.125rem);
  --fs-md: clamp(1.2rem, 1.1rem + 0.5vw, 1.5rem);
  --fs-lg: clamp(1.6rem, 1.4rem + 1vw, 2.2rem);
  --fs-xl: clamp(2.2rem, 1.8rem + 2vw, 3.4rem);
  --fs-xxl: clamp(2.8rem, 2.1rem + 3.4vw, 5rem);

  /* ---- Espaciado ---- */
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1.25rem;
  --space-md: 2rem;
  --space-lg: 3.25rem;
  --space-xl: 5.25rem;
  --space-2xl: 8.5rem;

  /* ---- Layout ---- */
  --container-max: 1320px;
  --container-pad: clamp(1.25rem, 4vw, 3.5rem);
  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 28px;
  --border-hairline: 1px solid rgba(44, 37, 33, 0.12);

  /* ---- Movimiento ---- */
  --ease-premium: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 220ms;
  --dur-mid: 480ms;
  --dur-slow: 900ms;

  --shadow-soft: 0 18px 44px -22px rgba(44, 37, 33, 0.35);
  --shadow-lift: 0 26px 60px -20px rgba(15, 79, 77, 0.32);
}

/* ---------------------------------- Reset ---------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

@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;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-paper);
  min-height: 100vh;
  overflow-x: hidden;
}

img, picture, video, svg { display: block; max-width: 100%; height: auto; }
img { background: var(--color-teal-100); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.08;
  color: var(--color-teal-900);
  text-wrap: balance;
}

h1 { font-size: var(--fs-xxl); letter-spacing: -0.01em; }
h2 { font-size: var(--fs-xl); letter-spacing: -0.005em; }
h3 { font-size: var(--fs-md); }
p { max-width: 62ch; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
ul, ol { list-style: none; padding: 0; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-rose-600);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: -60px;
  left: var(--space-sm);
  z-index: 1000;
  background: var(--color-teal-900);
  color: var(--color-white);
  padding: 0.75em 1.25em;
  border-radius: var(--radius-sm);
  transition: top var(--dur-fast) var(--ease-premium);
}
.skip-link:focus { top: var(--space-sm); }

:focus-visible {
  outline: 3px solid var(--color-rose-500);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ----------------------------- Fondo ambiental global -----------------------------
   Tres manchas de acuarela (tonos de marca) que respiran muy lentamente detras de
   todo el sitio. Fixed + pointer-events:none: nunca interfiere con el contenido ni
   con el scroll. Solo se ve a traves de las secciones con fondo "papel"; las
   secciones con color solido (paneles oscuros, footer) quedan intactas encima.
------------------------------------------------------------------------------------ */
.ambient-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.ambient-bg span {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.5;
  will-change: transform;
}
.ambient-bg span:nth-child(1) {
  width: 46vw; height: 46vw;
  top: -14vw; left: -10vw;
  background: radial-gradient(circle, var(--color-teal-200), transparent 70%);
  animation: driftA 34s ease-in-out infinite;
}
.ambient-bg span:nth-child(2) {
  width: 38vw; height: 38vw;
  top: 32vh; right: -12vw;
  background: radial-gradient(circle, var(--color-rose-300), transparent 70%);
  animation: driftB 40s ease-in-out infinite;
}
.ambient-bg span:nth-child(3) {
  width: 42vw; height: 42vw;
  bottom: -16vw; left: 18vw;
  background: radial-gradient(circle, var(--color-clay-300), transparent 70%);
  animation: driftC 46s ease-in-out infinite;
}
@keyframes driftA {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(4vw, 6vh) scale(1.12); }
}
@keyframes driftB {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-5vw, 4vh) scale(0.92); }
}
@keyframes driftC {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(3vw, -5vh) scale(1.08); }
}
@media (prefers-reduced-motion: reduce) {
  .ambient-bg span { animation: none; }
}

/* Scroll-reveal (activado por JS agregando .is-visible via IntersectionObserver) */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-slow) var(--ease-premium), transform var(--dur-slow) var(--ease-premium);
}
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }
[data-reveal="fade"] { transform: none; }
[data-reveal="left"] { transform: translateX(-36px); }
[data-reveal="left"].is-visible { transform: translateX(0); }
[data-reveal="right"] { transform: translateX(36px); }
[data-reveal="right"].is-visible { transform: translateX(0); }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}

/* -------------------------------- Header ----------------------------------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  padding-block: var(--space-xs);
  background: rgba(251, 246, 238, 0.86);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid rgba(44, 37, 33, 0.08);
  transition: transform var(--dur-mid) var(--ease-premium), box-shadow var(--dur-mid) var(--ease-premium), padding var(--dur-mid) var(--ease-premium);
}
.site-header.is-scrolled { padding-block: var(--space-3xs); box-shadow: var(--shadow-soft); }
.site-header.is-hidden { transform: translateY(-102%); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--color-teal-900);
}
.brand img { width: 46px; height: 46px; border-radius: 50%; transition: transform var(--dur-mid) var(--ease-premium); }
.brand:hover img { transform: rotate(-8deg) scale(1.05); }
.brand-name { display: flex; flex-direction: column; line-height: 1.05; }
.brand-name small { font-family: var(--font-body); font-size: var(--fs-xs); letter-spacing: 0.08em; color: var(--color-rose-600); text-transform: uppercase; }

.main-nav { display: none; }
.main-nav ul { display: flex; align-items: center; gap: var(--space-md); }
.main-nav a {
  position: relative;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-ink-soft);
  padding-block: var(--space-3xs);
}
.main-nav a::after {
  content: "";
  position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 2px;
  background: var(--color-rose-500);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur-fast) var(--ease-premium);
}
.main-nav a:hover::after, .main-nav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
.main-nav a[aria-current="page"] { color: var(--color-teal-900); }

.header-actions { display: flex; align-items: center; gap: var(--space-sm); }

/* Debajo de este ancho, header-actions (carrito + boton + hamburguesa) no
   entra en una sola fila sin flex-wrap; el CTA de texto ya esta disponible
   dentro del menu movil, asi que se oculta para que el carrito y el
   hamburguesa nunca queden fuera del viewport. */
@media (max-width: 639px) {
  .header-actions { gap: var(--space-xs); }
  .header-actions > .btn-primary { display: none; }
}

.menu-toggle {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  border: var(--border-hairline);
}
.menu-toggle .bars { position: relative; width: 20px; height: 14px; }
.menu-toggle .bars span {
  position: absolute; left: 0; width: 100%; height: 2px;
  background: var(--color-ink);
  transition: transform var(--dur-fast) var(--ease-premium), opacity var(--dur-fast) var(--ease-premium), top var(--dur-fast) var(--ease-premium);
}
.menu-toggle .bars span:nth-child(1) { top: 0; }
.menu-toggle .bars span:nth-child(2) { top: 6px; }
.menu-toggle .bars span:nth-child(3) { top: 12px; }
.menu-toggle[aria-expanded="true"] .bars span:nth-child(1) { top: 6px; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] .bars span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] .bars span:nth-child(3) { top: 6px; transform: rotate(-45deg); }

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 190;
  background: var(--color-teal-900);
  color: var(--color-paper);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: calc(var(--space-2xl) + 2rem) var(--space-md) var(--space-lg);
  transform: translateX(100%);
  transition: transform var(--dur-mid) var(--ease-premium);
}
.mobile-nav.is-open { transform: translateX(0); }
.mobile-nav ul { display: flex; flex-direction: column; gap: var(--space-sm); }
.mobile-nav a { font-family: var(--font-display); font-size: var(--fs-lg); color: var(--color-paper); }
.mobile-nav .mobile-nav-meta { margin-top: var(--space-xl); font-size: var(--fs-sm); color: var(--color-teal-200); }
.mobile-nav .mobile-nav-meta a { color: var(--color-rose-300); font-family: var(--font-body); font-weight: 600; }

@media (min-width: 992px) {
  .main-nav { display: block; }
  .menu-toggle, .mobile-nav { display: none; }
}

/* -------------------------------- Footer ------------------------------------ */
.site-footer {
  background: var(--color-teal-900);
  color: var(--color-teal-100);
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute; inset: -8%;
  background-image: radial-gradient(circle at 12% 20%, rgba(255,255,255,0.06), transparent 40%),
                     radial-gradient(circle at 88% 78%, rgba(224,86,127,0.14), transparent 45%);
  pointer-events: none;
  animation: ctaGlow 22s ease-in-out infinite;
}
@keyframes ctaGlow {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-2%, 2%) scale(1.06); }
}
.footer-inner { position: relative; padding-block: var(--space-2xl) var(--space-lg); display: grid; gap: var(--space-lg); }
.footer-top { display: grid; gap: var(--space-lg); grid-template-columns: 1.3fr repeat(3, 1fr); }
.footer-brand p { color: var(--color-teal-200); max-width: 34ch; }
.footer-brand .brand { color: var(--color-paper); margin-bottom: var(--space-xs); }
.footer-heading { font-family: var(--font-body); font-size: var(--fs-xs); letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-rose-300); margin-bottom: var(--space-sm); }
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-2xs); }
.footer-col a { color: var(--color-teal-100); font-size: var(--fs-sm); }
.footer-col a:hover { color: var(--color-white); text-decoration: underline; }
.footer-social { display: flex; gap: var(--space-xs); margin-top: var(--space-sm); }
.footer-social a {
  display: grid; place-items: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(241, 250, 249, 0.28);
  transition: background var(--dur-fast), transform var(--dur-fast);
}
.footer-social a:hover { background: var(--color-rose-500); transform: translateY(-3px); border-color: transparent; }

.footer-bottom {
  border-top: 1px solid rgba(241, 250, 249, 0.16);
  padding-top: var(--space-md);
  display: flex; flex-wrap: wrap; gap: var(--space-sm);
  align-items: center; justify-content: space-between;
  font-size: var(--fs-xs); color: var(--color-teal-200);
}
.footer-bottom nav ul { display: flex; gap: var(--space-sm); flex-wrap: wrap; }
.footer-bottom a:hover { color: var(--color-white); }
.credit a { color: var(--color-rose-300); font-weight: 600; }
.credit a:hover { text-decoration: underline; }

@media (max-width: 991px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 575px) {
  .footer-top { grid-template-columns: 1fr; }
}

/* -------------------------- Boton flotante WhatsApp -------------------------- */
.floating-whatsapp {
  position: fixed;
  right: var(--space-sm);
  bottom: var(--space-sm);
  z-index: 150;
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  background: var(--color-teal-700);
  color: var(--color-white);
  padding: 0.9rem 1.1rem;
  border-radius: 999px;
  box-shadow: var(--shadow-lift);
  font-size: var(--fs-sm);
  font-weight: 600;
  transition: transform var(--dur-fast) var(--ease-premium), background var(--dur-fast);
}
.floating-whatsapp:hover { transform: translateY(-4px); background: var(--color-teal-600); }
.floating-whatsapp svg { width: 20px; height: 20px; flex-shrink: 0; }
.floating-whatsapp .fw-label { display: none; }
@media (min-width: 576px) { .floating-whatsapp .fw-label { display: inline; } }