/* ==========================================================================
   BASE & THEME TOKENS — ANGÉLICA RICAURTE
   Dirección artística según 'tasteskill v2' (Anti-slop, Museo Contemporáneo)
   Paleta adoptada de la biblioteca: 'black-crimson' / 'paper-crimson'
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cagliostro&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;1,6..72,400&display=swap');

:root {
  /* Tipografía */
  --font-display: 'Cagliostro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Cagliostro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Newsreader', Georgia, serif;

  /* Escala Tipográfica Editorial */
  --step-small: 14px;
  --step-body: 16px;
  --step-lead: 20px;
  --step-title: clamp(2rem, 1.6rem + 2vw, 3rem);
  --step-monument: clamp(2.8rem, 2rem + 5vw, 6.2rem);

  /* Espaciado */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --space-2xl: 96px;

  /* Transición */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.18s var(--ease-out);
  --transition-normal: 0.28s var(--ease-out);

  --radius-sm: 4px;
  --radius-full: 9999px;
}

/* Modo Galería Clara (Pure Paper & Crimson) */
[data-theme="light"], :root:not([data-theme="dark"]) {
  --color-ground: #F8F8F6;
  --color-ground-subtle: #EEEEEC;
  --color-ground-card: #E8E8E4;
  --color-ground-elevated: #FFFFFF;
  --color-ink: #242424;
  --color-ink-muted: #555555;
  --color-ink-faint: #777777;
  --color-border: rgba(17, 17, 17, 0.12);
  --color-border-strong: rgba(17, 17, 17, 0.3);
  --color-accent: #B11226;          /* Crimson Galería */
  --color-accent-hover: #8E0E1E;
  --color-overlay: rgba(17, 17, 17, 0.75);
}

/* Modo Exposición Oscura (Black & Crimson) */
[data-theme="dark"] {
  --color-ground: #1e1a1a;
  --color-ground-subtle: #141414;
  --color-ground-card: #181818;
  --color-ground-elevated: #202020;
  --color-ink: #FFFFFF;
  --color-ink-muted: #CCCCCC;
  --color-ink-faint: #888888;
  --color-border: rgba(255, 255, 255, 0.12);
  --color-border-strong: rgba(255, 255, 255, 0.3);
  --color-accent: #E52B42;          /* Crimson Luminoso */
  --color-accent-hover: #F24459;
  --color-overlay: rgba(0, 0, 0, 0.88);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-ground);
  color: var(--color-ink);
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  font-size: var(--step-body);
  line-height: 1.5;
  background-color: var(--color-ground);
  color: var(--color-ink);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

input, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: transparent;
}

a {
  color: inherit;
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: 1560px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-lg);
  }
}




/* 1. Grosor de la barra (width para vertical, height para horizontal) */
::-webkit-scrollbar {
  width: 6px;
}

/* 2. Fondo o carril por donde se desliza (track) */
::-webkit-scrollbar-track {
  background: #ffffff00;
}

/* 3. Barra móvil (thumb) */
::-webkit-scrollbar-thumb {
  background-color: #b11226;
  border-radius: 20px;       /* Bordes redondeados */
}

/* 4. Efecto al pasar el cursor por encima */
::-webkit-scrollbar-thumb:hover {
  background-color: #525252;
}

/* ==================== CAPA DE MOVIMIENTO (MOTION LAYER) ==================== */
.hero-title {
  animation: entranceFadeUp 0.6s var(--ease-out) both;
}

.hero-statement {
  animation: entranceFadeUp 0.7s 0.1s var(--ease-out) both;
}

.hero-stats {
  animation: entranceFadeUp 0.7s 0.2s var(--ease-out) both;
}

.topbar-brand, .nav-btn, .theme-toggle-btn {
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

@media (prefers-reduced-motion: reduce) {
  .hero-title,
  .hero-statement,
  .hero-stats,
  .obra-card {
    animation: none !important;
    transform: none !important;
    opacity: 1 !important;
    transition: none !important;
  }
}

@keyframes entranceFadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes entranceCard {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==================== BOTÓN VOLVER ARRIBA ==================== */
.btn-back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 500;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--color-ink);
  color: var(--color-ground);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.3s var(--ease-out), visibility 0.3s, transform 0.3s var(--ease-out), background-color var(--transition-fast);
}

.btn-back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.btn-back-to-top:hover {
  background-color: var(--color-accent);
  transform: translateY(-3px) scale(1.05);
}

.btn-back-to-top svg {
  stroke-width: 2.4;
}