/* 
 * Encumar - Revista Interactiva: Tipos de Encuadernación
 * Estilos Editoriales & Diseño de Interfaz (Paleta Azul, Celeste, Blanco y Negro)
 */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,600;0,700;1,400;1,600&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Playfair+Display:ital,wght@0,400;0,600;0,700;0,900;1,400;1,700&display=swap');

:root {
  /* Paleta Primaria: Azules y Marinos */
  --color-navy-950: #060D1D;
  --color-navy-900: #0B1528;
  --color-navy-800: #0F2042;
  --color-navy-700: #1E3A8A;
  
  --color-blue-600: #0284C7;
  --color-blue-700: #0369A1;
  --color-blue-800: #1E40AF;

  /* Celestes y Sky */
  --color-celeste-500: #0EA5E9;
  --color-celeste-400: #38BDF8;
  --color-celeste-300: #7DD3FC;
  --color-celeste-200: #BAE6FD;
  --color-celeste-100: #E0F2FE;
  --color-celeste-50: #F0F9FF;

  /* Blancos y Fondos Claros */
  --color-paper-light: #FFFFFF;
  --color-paper-base: #F8FAFC;
  --color-paper-celeste: #F0F9FF;
  
  /* Textos y Letras (Negro profundo e Ink) */
  --color-ink-900: #0F172A;
  --color-ink-800: #1E293B;
  --color-ink-700: #334155;
  --color-ink-600: #475569;

  --font-serif-title: 'Playfair Display', Georgia, serif;
  --font-serif-body: 'Cormorant Garamond', Georgia, serif;
  --font-sans-ui: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
}

body {
  font-family: var(--font-sans-ui);
  background-color: #060D1D;
  color: var(--color-ink-900);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.font-serif-title {
  font-family: var(--font-serif-title);
}

.font-serif-body {
  font-family: var(--font-serif-body);
}

.font-sans-ui {
  font-family: var(--font-sans-ui);
}

/* Textura sutil de papel editorial blanco pulido */
.paper-texture {
  background-color: var(--color-paper-light);
  background-image: radial-gradient(#CBD5E1 0.8px, transparent 0.8px), radial-gradient(#CBD5E1 0.8px, var(--color-paper-light) 0.8px);
  background-size: 28px 28px;
  background-position: 0 0, 14px 14px;
}

/* Sombra central del lomo para spreads de revista abierta */
.spine-shadow-left {
  box-shadow: inset -16px 0 20px -8px rgba(15, 23, 42, 0.08), 3px 0 10px rgba(15, 23, 42, 0.03);
}

.spine-shadow-right {
  box-shadow: inset 16px 0 20px -8px rgba(15, 23, 42, 0.08), -3px 0 10px rgba(15, 23, 42, 0.03);
}

/* Acabado Celeste Metálico / Foil para titulares */
.celeste-gradient-text {
  background: linear-gradient(135deg, #BAE6FD 0%, #38BDF8 40%, #0284C7 85%, #1E40AF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gold-foil-text {
  background: linear-gradient(135deg, #BAE6FD 0%, #38BDF8 40%, #0284C7 85%, #1E40AF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.celeste-border {
  border-color: #38BDF8;
  box-shadow: 0 0 18px rgba(56, 189, 248, 0.22);
}

.gold-foil-border {
  border-color: #38BDF8;
  box-shadow: 0 0 18px rgba(56, 189, 248, 0.22);
}

.blue-glow {
  box-shadow: 0 0 30px rgba(14, 165, 233, 0.25);
}

/* Regla estricta de ocultación para alternar vistas sin conflictos de especificidad */
.hidden,
#view-magazine.hidden,
#view-scroll.hidden {
  display: none !important;
}

/* Estilos de altura y proporción de revista al 90% del viewport */
#view-magazine:not(.hidden) {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

#magazine-viewport {
  min-height: 580px;
  height: 100%;
}

@media (min-width: 1024px) {
  #magazine-viewport {
    height: calc(90vh - 110px);
    min-height: calc(90vh - 110px);
  }
}

.magazine-page {
  position: relative;
  background-color: #FFFFFF;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  min-height: 520px;
  height: 100%;
  overflow-y: auto;
}

@media (min-width: 1024px) {
  .magazine-page {
    min-height: 100%;
    height: 100%;
  }
  .magazine-spread-container {
    perspective: 2000px;
  }
}

/* Tarjetas de encuadernación */
.binding-card {
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.binding-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 30px -10px rgba(2, 132, 199, 0.15);
}

/* Animación sutil de pulso para llamadas a la acción */
@keyframes subtlePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

.pulse-hover:hover {
  animation: subtlePulse 1.5s infinite ease-in-out;
}

/* Acordeón interactivo para FAQ */
details summary::-webkit-details-marker {
  display: none;
}

details[open] summary .faq-icon {
  transform: rotate(180deg);
}

/* Animación suave para modales y drawers */
.modal-fade-in {
  animation: fadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.97); }
  to { opacity: 1; transform: scale(1); }
}

/* Barra de desplazamiento personalizada en gama azul */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #0B1528;
}

::-webkit-scrollbar-thumb {
  background: #1E3A8A;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #0284C7;
}

/* Controles flotantes y paneles translúcidos */
.glass-panel {
  background: rgba(11, 21, 40, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(56, 189, 248, 0.15);
}

.light-glass-panel {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(224, 242, 254, 0.9);
}