/* ═══════════════════════════════════════════════════════════════
   ESPACIO TAIJI — Sistema de diseño
   Papel de arroz · tinta · sello bermellón · trazo de pincel
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* Superficies */
  --papel: #F6F1E6;
  --papel-osc: #ECE4D2;
  --papel-hover: #E3D9C3;

  /* Tinta */
  --tinta: #1C1B18;
  --tinta-suave: #4A473F;
  --tinta-tenue: #85806F;

  /* Acentos */
  --jade: #4F6D5E;
  --jade-suave: #7C9C8C;
  --jade-tenue: rgba(79, 109, 94, 0.1);
  --sello: #A23B2C;
  --sello-tenue: rgba(162, 59, 44, 0.1);

  --niebla: #DCD3BC;
  --niebla-suave: #EBE3CF;

  /* Tipografía */
  --font-titulo: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-cuerpo: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Espaciado */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 9rem;

  --container: 1120px;
  --container-narrow: 760px;
  --container-article: 660px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 0.7s;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-cuerpo);
  background: var(--papel);
  color: var(--tinta);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

::selection { background: var(--jade-tenue); color: var(--tinta); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--space-lg); }
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 var(--space-lg); }

h1, h2, h3, h4 { font-family: var(--font-titulo); font-weight: 500; line-height: 1.15; letter-spacing: -0.01em; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.6em;
  font-size: 0.72rem; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--jade); font-weight: 600;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--jade); display: inline-block; }

.section-title { font-size: clamp(2.1rem, 4vw, 3rem); margin: var(--space-sm) 0 var(--space-md); }
.section-title em { font-style: italic; color: var(--jade); }
.section-lede { font-size: 1.15rem; color: var(--tinta-suave); max-width: 620px; }

.btn {
  display: inline-flex; align-items: center; gap: 0.6em;
  padding: 0.9em 1.8em; border-radius: 999px;
  font-family: var(--font-cuerpo); font-size: 0.92rem; font-weight: 600;
  border: 1px solid transparent; cursor: pointer;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.btn-sello { background: var(--sello); color: var(--papel); }
.btn-sello:hover { background: #8a3325; transform: translateY(-2px); }
.btn-outline { border-color: currentColor; }
.btn-outline:hover { background: var(--tinta); color: var(--papel); }
.btn-outline-light { border-color: rgba(246,241,230,0.5); color: var(--papel); }
.btn-outline-light:hover { background: var(--papel); color: var(--tinta); }
.btn svg { width: 16px; height: 16px; stroke-width: 2; }

/* ── Reveal on scroll ── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.22s; }
.reveal-delay-3 { transition-delay: 0.34s; }

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

/* ═══ NAV ═══ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.4rem var(--space-lg);
  background: rgba(246,241,230,0.7); backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), padding var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav.scrolled { border-color: var(--niebla); padding: 0.9rem var(--space-lg); background: rgba(246,241,230,0.92); }

.nav-brand { display: flex; align-items: center; gap: 0.6rem; font-family: var(--font-titulo); font-size: 1.15rem; }
.nav-brand img { height: 34px; width: auto; }
.nav-brand-fallback { width: 30px; height: 30px; }

.nav-links { display: flex; gap: 2.1rem; list-style: none; }
.nav-links a { font-size: 0.86rem; letter-spacing: 0.02em; color: var(--tinta-suave); position: relative; padding-bottom: 3px; }
.nav-links a:hover { color: var(--tinta); }
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px; background: var(--sello);
  transition: right var(--dur) var(--ease);
}
.nav-links a:hover::after { right: 0; }

.nav-cta { font-size: 0.86rem; font-weight: 600; padding: 0.6em 1.3em; border: 1px solid var(--tinta); border-radius: 999px; transition: background var(--dur) var(--ease), color var(--dur) var(--ease); }
.nav-cta:hover { background: var(--tinta); color: var(--papel); }

.nav-burger { display: none; flex-direction: column; gap: 5px; width: 26px; background: none; border: none; cursor: pointer; }
.nav-burger span { display: block; height: 1.5px; background: var(--tinta); transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease); }
.nav-burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-mobile {
  position: fixed; inset: 0; z-index: 99; background: var(--papel);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2rem;
  transform: translateY(-100%); transition: transform var(--dur) var(--ease);
}
.nav-mobile.open { transform: translateY(0); }
.nav-mobile a { font-family: var(--font-titulo); font-size: 1.6rem; }

/* ═══ HERO ═══ */
.hero {
  min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; position: relative; padding: 8rem var(--space-lg) var(--space-2xl);
  background: var(--tinta); color: var(--papel); overflow: hidden;
}
.hero-ink {
  position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.5; pointer-events: none;
}
.hero-eyebrow { font-size: 0.75rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--jade-suave); margin-bottom: var(--space-md); position: relative; }
.hero-title {
  font-family: var(--font-titulo); font-weight: 400; font-style: italic;
  font-size: clamp(1.9rem, 4.6vw, 3.6rem); line-height: 1.32; max-width: 21ch;
  position: relative; margin-bottom: var(--space-lg);
}
.hero-actions { position: relative; display: flex; gap: 1rem; }
.hero-scroll { position: absolute; bottom: var(--space-lg); left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 0.5rem; opacity: 0.6; }
.hero-scroll span { font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase; }
.hero-scroll-line { width: 1px; height: 34px; background: currentColor; animation: scrollpulse 2.2s ease-in-out infinite; }
@keyframes scrollpulse { 0%,100% { transform: scaleY(0.6); opacity: 0.4; } 50% { transform: scaleY(1); opacity: 1; } }

/* ═══ SECTION generic ═══ */
.section { padding: var(--space-3xl) 0; }
.section-alt { background: var(--papel-osc); }
.section-dark { background: var(--tinta); color: var(--papel); }
.section-dark .section-lede { color: rgba(246,241,230,0.7); }
.section-dark .eyebrow { color: var(--jade-suave); }
.section-dark .eyebrow::before { background: var(--jade-suave); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2xl); align-items: center; }
.split-reverse { direction: rtl; }
.split-reverse > * { direction: ltr; }

.prose { font-size: 1.05rem; color: var(--tinta-suave); }
.prose p + p { margin-top: 1.1em; }
.prose strong { color: var(--tinta); font-weight: 600; }

.figure-ink { border-radius: 4px; overflow: hidden; background: var(--niebla-suave); aspect-ratio: 4/5; display: flex; align-items: center; justify-content: center; }
.figure-ink svg { width: 62%; height: 62%; }

/* ═══ PRINCIPIOS (Filosofía) ═══ */
.principios { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--niebla); border: 1px solid var(--niebla); margin: var(--space-xl) 0; }
.principio { background: var(--papel); padding: var(--space-lg) var(--space-md); }
.principio-num { font-family: var(--font-titulo); font-style: italic; font-size: 1.6rem; color: var(--jade-suave); }
.principio-title { font-family: var(--font-titulo); font-size: 1.2rem; margin: 0.5rem 0 0.6rem; }
.principio-text { font-size: 0.92rem; color: var(--tinta-suave); }

/* ═══ BENEFICIOS (Práctica) ═══ */
.beneficios { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-md); margin-top: var(--space-lg); }
.beneficio { display: flex; gap: 1rem; align-items: flex-start; }
.beneficio-icon { width: 40px; height: 40px; flex-shrink: 0; border-radius: 50%; background: var(--jade-tenue); display: flex; align-items: center; justify-content: center; color: var(--jade); }
.beneficio-icon svg { width: 18px; height: 18px; }
.beneficio-title { font-weight: 600; margin-bottom: 0.2rem; }
.beneficio-text { font-size: 0.9rem; color: var(--tinta-suave); }

/* ═══ CAMINO (cita contemplativa) ═══ */
.camino { text-align: center; padding: var(--space-3xl) 0; }
.camino-mark { width: 64px; height: 64px; margin: 0 auto var(--space-lg); opacity: 0.85; }
.camino blockquote { font-family: var(--font-titulo); font-style: italic; font-size: clamp(1.5rem, 3.4vw, 2.3rem); line-height: 1.5; max-width: 15ch; margin: 0 auto var(--space-lg); }
.camino .prose { max-width: var(--container-narrow); margin: 0 auto; text-align: left; }

/* ═══ GALERÍA ═══ */
.galeria-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-sm); margin-top: var(--space-xl); }
.galeria-item { aspect-ratio: 1; background: var(--papel-osc); border-radius: 4px; display: flex; align-items: center; justify-content: center; overflow: hidden; transition: background var(--dur) var(--ease); }
.galeria-item:hover { background: var(--niebla-suave); }
.galeria-item svg { width: 56%; height: 56%; transition: transform var(--dur) var(--ease); }
.galeria-item:hover svg { transform: scale(1.06); }

/* ═══ BLOG ═══ */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); margin-top: var(--space-xl); }
.blog-card { display: flex; flex-direction: column; gap: var(--space-sm); }
.blog-card-visual { aspect-ratio: 16/11; background: var(--tinta); border-radius: 4px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.blog-card-visual svg { width: 44%; height: 44%; opacity: 0.9; }
.blog-card-tag { font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--jade); font-weight: 600; }
.blog-card-title { font-family: var(--font-titulo); font-size: 1.35rem; }
.blog-card-excerpt { font-size: 0.92rem; color: var(--tinta-suave); }
.blog-card-link { font-size: 0.85rem; font-weight: 600; display: inline-flex; align-items: center; gap: 0.4em; margin-top: 0.2rem; }
.blog-card-link svg { width: 14px; height: 14px; transition: transform var(--dur) var(--ease); }
.blog-card:hover .blog-card-link svg { transform: translateX(4px); }

/* ═══ CONTACTO ═══ */
.contacto-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2xl); }
.form-field { margin-bottom: var(--space-md); }
.form-field label { display: block; font-size: 0.8rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--tinta-tenue); margin-bottom: 0.5rem; }
.form-field input, .form-field textarea {
  width: 100%; padding: 0.85em 1em; background: var(--papel); border: 1px solid var(--niebla);
  border-radius: 4px; font-family: var(--font-cuerpo); font-size: 0.96rem; color: var(--tinta);
  transition: border-color var(--dur) var(--ease);
}
.form-field input:focus, .form-field textarea:focus { outline: none; border-color: var(--jade); }
.form-field textarea { resize: vertical; min-height: 110px; }

.contacto-directo { display: flex; flex-direction: column; gap: 1.1rem; }
.contacto-directo-item { display: flex; align-items: center; gap: 0.9rem; }
.contacto-directo-item .icon { width: 42px; height: 42px; border-radius: 50%; background: var(--jade-tenue); color: var(--jade); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contacto-directo-item .icon svg { width: 19px; height: 19px; }
.contacto-directo-item a, .contacto-directo-item span { font-weight: 500; }
.contacto-directo-item small { display: block; color: var(--tinta-tenue); font-size: 0.8rem; }

/* ═══ FOOTER ═══ */
.footer { background: var(--tinta); color: rgba(246,241,230,0.6); padding: var(--space-xl) 0 var(--space-lg); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--space-md); padding-bottom: var(--space-lg); border-bottom: 1px solid rgba(246,241,230,0.12); }
.footer-brand { display: flex; align-items: center; gap: 0.6rem; color: var(--papel); font-family: var(--font-titulo); font-size: 1.05rem; }
.footer-brand img { height: 26px; }
.footer-links { display: flex; gap: 1.6rem; }
.footer-links a { font-size: 0.85rem; }
.footer-links a:hover { color: var(--papel); }
.footer-copy { padding-top: var(--space-md); font-size: 0.78rem; text-align: center; }

/* ═══ ARTÍCULO (páginas de blog) ═══ */
.articulo-header { padding: 9rem var(--space-lg) var(--space-xl); text-align: center; background: var(--papel-osc); }
.articulo-header .eyebrow { justify-content: center; }
.articulo-title { font-family: var(--font-titulo); font-size: clamp(2rem, 4.4vw, 3.1rem); max-width: 18ch; margin: var(--space-sm) auto; }
.articulo-lede { font-size: 1.1rem; color: var(--tinta-suave); max-width: 46ch; margin: 0 auto; }
.articulo-meta { margin-top: var(--space-md); font-size: 0.8rem; color: var(--tinta-tenue); letter-spacing: 0.04em; }
.articulo-visual { max-width: 300px; margin: var(--space-lg) auto 0; opacity: 0.85; }
.articulo-body { max-width: var(--container-article); margin: 0 auto; padding: var(--space-2xl) var(--space-lg); font-size: 1.12rem; color: var(--tinta-suave); }
.articulo-body p + p { margin-top: 1.4em; }
.articulo-body p:first-of-type::first-letter { font-family: var(--font-titulo); font-size: 3.4em; float: left; line-height: 0.85; padding: 0.05em 0.1em 0 0; color: var(--sello); font-style: italic; }
.articulo-nav { max-width: var(--container-article); margin: 0 auto; padding: 0 var(--space-lg) var(--space-2xl); display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--niebla); padding-top: var(--space-lg); }
.articulo-nav a { font-size: 0.88rem; font-weight: 600; display: inline-flex; align-items: center; gap: 0.4em; }
.articulo-nav svg { width: 15px; height: 15px; }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 900px) {
  .nav-links, .nav-cta { display: none; }
  .nav-burger { display: flex; }
  .split, .contacto-grid { grid-template-columns: 1fr; }
  .split-reverse { direction: ltr; }
  .principios { grid-template-columns: 1fr; }
  .beneficios { grid-template-columns: 1fr; }
  .galeria-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-grid { grid-template-columns: 1fr; max-width: 460px; margin-left: auto; margin-right: auto; }
  .section { padding: var(--space-2xl) 0; }
  .container, .container-narrow { padding: 0 var(--space-md); }
}
@media (max-width: 560px) {
  .galeria-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { justify-content: center; }
}