/* variables.css */
/**
 * variables.css — Design Tokens
 * Paleta y tipografía tomadas del Manual de Marca Albura Studio.
 * La terracota queda reservada como acento exclusivo de CTAs.
 */

:root {
  /* ---- Paleta de marca ---- */
  --c-cafe-albura: #4A3728;
  --c-cafe-black:  #2B2118;
  --c-marfil:      #D7C9A6;
  --c-terracota:   #C1571A;
  --c-beige-claro: #EDE6D6;
  --c-mostaza:     #B98D46;

  /* ---- Superficies ---- */
  --bg-base:        var(--c-cafe-black);
  --bg-elevated:     #33271C;
  --bg-light:        var(--c-beige-claro);
  --text-primary:    var(--c-marfil);
  --text-primary-on-light: var(--c-cafe-black);
  --text-muted:      #A8998690;
  --text-muted-solid:#B7A98E;
  --border-hairline: #6b573f66;

  /* ---- Tipografía ---- */
  --font-display: 'Lora', 'Georgia', serif;
  --font-body: 'Work Sans', -apple-system, sans-serif;

  --fs-hero: clamp(3.4rem, 9vw, 8.5rem);
  --fs-h1: clamp(2.6rem, 6vw, 5.4rem);
  --fs-h2: clamp(2.1rem, 4.4vw, 3.6rem);
  --fs-h3: clamp(1.4rem, 2.4vw, 1.9rem);
  --fs-lead: clamp(1.05rem, 1.6vw, 1.35rem);
  --fs-body: 1rem;
  --fs-small: 0.85rem;
  --fs-eyebrow: 0.78rem;

  /* ---- Espaciado ---- */
  --section-pad-y: clamp(5rem, 12vw, 10rem);
  --container-w: 1320px;
  --container-pad: clamp(1.5rem, 5vw, 4rem);

  /* ---- Movimiento ---- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 0.35s;
  --dur-med: 0.7s;
  --dur-slow: 1.1s;

  --radius-lg: 28px;
  --radius-md: 16px;
  --radius-sm: 8px;
}

/* base.css */
/**
 * base.css — Reset + fundamentos tipográficos + utilidades
 */

*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: auto;
  background: var(--bg-base);
}

body {
  margin: 0;
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  cursor: none; /* reemplazado por cursor personalizado en desktop */
}

@media (max-width: 860px) {
  body { cursor: auto; }
  .cursor { display: none !important; }
}

img { max-width: 100%; display: block; }
/* <picture> no debe generar su propia caja: los <img> adentro (width/height
   100%, object-fit) siguen tratando al padre real como su contenedor, igual
   que antes de envolverlos para servir WebP con <source>. */
picture { display: contents; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 500; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

::selection { background: var(--c-terracota); color: var(--c-beige-claro); }

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-mostaza);
  font-weight: 600;
}
.eyebrow::before {
  content: '';
  width: 26px;
  height: 1px;
  background: currentColor;
}
.eyebrow--light { color: var(--c-terracota); }

em { font-style: italic; color: var(--c-terracota); font-family: var(--font-display); }

/* ---- Botones ---- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 1.9rem;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease-out), background var(--dur-fast), color var(--dur-fast), border-color var(--dur-fast);
}
/* :hover no dispara en touch — reservar la capa de composición solo para
   donde el hover realmente anima (desktop). */
@media (min-width: 861px) {
  .btn { will-change: transform; }
}
.btn svg { transition: transform var(--dur-fast) var(--ease-out); }
.btn:hover svg { transform: translateX(4px); }

.btn--terracota {
  background: var(--c-terracota);
  color: var(--c-beige-claro);
}
.btn--terracota:hover { background: #a94814; }

.btn--ghost {
  border-color: var(--border-hairline);
  color: var(--text-primary);
  background: transparent;
}
.btn--ghost:hover { border-color: var(--c-marfil); background: #ffffff0d; }

.btn--lg { padding: 1.15rem 2.4rem; font-size: 1rem; }

.section { padding-block: var(--section-pad-y); position: relative; scroll-margin-top: 100px; }
.section--light { background: var(--bg-light); color: var(--text-primary-on-light); }
.section--light em { color: var(--c-terracota); }

/* Anillos de crecimiento — segundo motivo recurrente de Albura */
.rings-accent {
  position: absolute;
  width: clamp(220px, 26vw, 380px);
  height: auto;
  color: var(--c-mostaza);
  opacity: 0.055;
  pointer-events: none;
  z-index: 0;
}
.rings-accent circle { fill: none; stroke: currentColor; stroke-width: 0.6; }
.rings-accent--br { bottom: -14%; right: -10%; }
.rings-accent--tl { top: -14%; left: -10%; }
.rings-accent--bc { bottom: -30%; left: 50%; transform: translateX(-50%); }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

/* Oculta elemento en pantallas chicas (mobile/tablet), visible solo en desktop */
@media (max-width: 1024px) {
  .hide-mobile { display: none !important; }
}

/* Scroll reveal base state (activado por reveal.js con IntersectionObserver) */
.reveal-up { opacity: 0; transform: translateY(48px); transition: opacity 1s var(--ease-out), transform 1s var(--ease-out); }
.reveal-up.is-visible { opacity: 1; transform: translateY(0); }

.reveal-lines { overflow: hidden; }

/* cursor.css */
/**
 * cursor.css — Cursor personalizado con anillo magnético
 */
.cursor {
  position: fixed;
  top: 0; left: 0;
  width: 0; height: 0;
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: difference;
}
.cursor__dot {
  position: absolute;
  width: 8px; height: 8px;
  background: var(--c-marfil);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: opacity var(--dur-fast);
}
.cursor__ring {
  position: absolute;
  width: 42px; height: 42px;
  border: 1px solid var(--c-marfil);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width var(--dur-fast) var(--ease-out), height var(--dur-fast) var(--ease-out), opacity var(--dur-fast);
}
.cursor.is-hover .cursor__ring { width: 70px; height: 70px; background: #D7C9A61a; }
.cursor.is-hidden .cursor__dot,
.cursor.is-hidden .cursor__ring { opacity: 0; }

/* loader.css */
/**
 * loader.css — Loader de entrada
 */
.loader {
  position: fixed; inset: 0;
  background: var(--c-cafe-black);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.6rem;
  transition: opacity 0.3s var(--ease-out), visibility 0.3s;
}
.loader.is-done { opacity: 0; visibility: hidden; pointer-events: none; }
.loader__mark { animation: loaderPulse 1.8s ease-in-out infinite; opacity: 0.92; }
.loader__mark img { filter: drop-shadow(0 0 24px #C1571A55); }
@keyframes loaderPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}
.loader__bar { width: min(220px, 60vw); height: 1px; background: #6b573f66; overflow: hidden; }
.loader__bar-fill { display: block; height: 100%; width: 0%; background: var(--c-terracota); transition: width 0.2s linear; }
.loader__count { font-family: var(--font-display); font-style: italic; color: var(--text-muted-solid); font-size: 0.85rem; letter-spacing: 0.05em; }

/* header.css */
/**
 * header.css — Nav fija + menú móvil
 */
.site-header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 500;
  padding-block: 1.4rem;
  transition: padding var(--dur-fast) var(--ease-out), background var(--dur-fast), border-color var(--dur-fast);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  padding-block: 0.9rem;
  background: #2B2118d9;
  backdrop-filter: blur(14px);
  border-color: var(--border-hairline);
}

/* backdrop-filter sobre un header fixed recalcula el blur en cada frame de
   scroll — carísimo en GPUs móviles de gama media/baja. Se cambia por un
   fondo más opaco (sin blur) donde más se nota el costo. */
@media (max-width: 860px) {
  .site-header.is-scrolled {
    background: #2B2118f2;
    backdrop-filter: none;
  }
}
.site-header__inner {
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.site-header__brand { display: flex; align-items: center; gap: 0.65rem; }
.site-header__mark { display: block; }
.site-header__wordmark { font-family: var(--font-display); font-size: 1.15rem; letter-spacing: 0.01em; }
.site-header__wordmark em { font-style: italic; color: var(--c-terracota); }

.site-header__nav { display: flex; gap: 2.1rem; }
.site-header__nav a {
  position: relative;
  font-size: 0.9rem;
  color: var(--text-muted-solid);
  transition: color var(--dur-fast);
}
.site-header__nav a::after {
  content: ''; position: absolute; left: 0; bottom: -4px;
  width: 0; height: 1px; background: var(--c-terracota);
  transition: width var(--dur-fast) var(--ease-out);
}
.site-header__nav a:hover { color: var(--c-marfil); }
.site-header__nav a:hover::after { width: 100%; }
.site-header__nav a.is-active { color: var(--c-marfil); }
.site-header__nav a.is-active::after { width: 100%; }

/* La terracota es acento exclusivo de CTAs (ver variables.css): el estado
   activo del mobile-nav usa marfil + subrayado, mismo lenguaje que el nav
   de escritorio, no un color reservado para "empezar proyecto". */
.mobile-nav a.is-active { color: var(--c-marfil); text-decoration: underline; text-underline-offset: 6px; text-decoration-color: var(--border-hairline); }

.site-header__cta { font-size: 0.85rem; padding: 0.75rem 1.4rem; }

.site-header__toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  background: none; border: none; padding: 0;
}
.site-header__toggle span { width: 22px; height: 1px; background: var(--c-marfil); transition: transform var(--dur-fast), opacity var(--dur-fast); }

.mobile-nav {
  position: fixed; inset: 0;
  background: var(--c-cafe-black);
  z-index: 490;
  display: flex; align-items: center; justify-content: center;
  transform: translateY(-100%);
  transition: transform 0.6s var(--ease-soft);
}
.mobile-nav.is-open { transform: translateY(0); }
.mobile-nav nav { display: flex; flex-direction: column; align-items: center; gap: 1.8rem; }
.mobile-nav a { font-family: var(--font-display); font-size: 1.9rem; }
.mobile-nav__cta { color: var(--c-terracota); }

@media (max-width: 900px) {
  .site-header__nav, .site-header__cta { display: none; }
  .site-header__toggle { display: flex; }
}

/* intro.css */
/**
 * intro.css — Sección de filosofía / concepto de marca
 */
.intro {
  position: relative;
  background:
    radial-gradient(80% 65% at 12% 0%, rgba(215, 201, 166, 0.12), transparent 62%),
    radial-gradient(70% 60% at 100% 100%, rgba(185, 141, 70, 0.1), transparent 58%),
    var(--c-cafe-black);
  overflow: hidden;
}

.intro::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(229, 204, 165, 0.08), transparent 28%);
  pointer-events: none;
}

.intro__watermark {
  position: absolute;
  right: -6%;
  bottom: -14%;
  width: clamp(280px, 34vw, 520px);
  height: auto;
  opacity: 0.05;
  pointer-events: none;
  z-index: 0;
  animation: watermarkSpin 45s linear infinite;
}

.intro__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(3rem, 6vw, 7rem);
  align-items: center;
}

.intro__title {
  font-size: var(--fs-h2);
  margin-block: 1.4rem 1.8rem;
  max-width: 14ch;
}

.intro__text {
  font-size: 1.05rem;
  color: var(--text-muted-solid);
  max-width: 46ch;
  margin-bottom: 1.1rem;
}
.intro__text--accent { color: var(--c-marfil); font-weight: 500; }

.intro__slogan {
  margin-top: 2.2rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.2rem;
  color: var(--c-terracota);
  padding-top: 1.6rem;
  border-top: 1px solid var(--border-hairline);
}

.intro__visual { position: relative; }
.intro__rings-wrap {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 30%, rgba(175, 135, 85, 0.1), transparent 32%),
    url("/app/Assets/img/photos/textura-madera.jpg") center/cover no-repeat,
    radial-gradient(circle at 50% 50%, #4A3728 0%, #2B2118 72%);
  background-blend-mode: soft-light, normal, normal;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 40px 90px -30px #00000090, inset 0 0 0 1px #6b573f4d;
}
.intro__rings { width: 82%; height: 82%; animation: ringsSpin 60s linear infinite; }
.intro__rings circle { fill: none; stroke: #D7C9A6; stroke-width: 0.7; opacity: 0.55; }
.intro__rings circle:nth-child(3n) { stroke: #C1571A; opacity: 0.7; }
@keyframes ringsSpin { to { transform: rotate(360deg); } }

.intro__rings-label {
  position: absolute; bottom: 8%; left: 50%; transform: translateX(-50%);
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-marfil);
  text-shadow: 0 1px 3px #00000090, 0 0 14px #00000060;
}

.intro__badge {
  position: absolute;
  bottom: -1.4rem;
  left: 0.5rem;
  max-width: 15rem;
  background: var(--c-terracota);
  border-radius: var(--radius-md, 14px);
  padding: 1.1rem 1.4rem;
  box-shadow: 0 20px 40px -16px #00000080;
  z-index: 2;
}
.intro__badge p {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.98rem;
  line-height: 1.35;
  color: var(--c-marfil);
}

@media (max-width: 640px) {
  .intro__badge { position: static; margin-top: 1.4rem; max-width: none; }
}

.intro__layers {
  margin-top: 3.4rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem 1.8rem;
}
.intro__layers li { border-left: 1px solid var(--border-hairline); padding-left: 1rem; }
.intro__layers strong { display: block; font-family: var(--font-display); font-size: 1.05rem; margin-bottom: 0.3rem; color: var(--c-marfil); }
.intro__layers p { font-size: 0.88rem; color: var(--text-muted-solid); }

@media (max-width: 980px) {
  .intro__grid { grid-template-columns: 1fr; }
  .intro__visual { order: -1; max-width: 380px; margin-inline: auto; }
}