/* ══════════════════════════════════════════════════════════════════════════
   BIBLIOTYAN — Premium Digital Library & Personal Knowledge Archive
   Design System: Editorial Luxury · Native Dark Mode
   Palette: #09070D (Base) · #171020 (Surface) · #21172C (Cards) · #B66AFF (Purple)
   Typography: Playfair Display (Headings) · Inter (UI & Body)
   ══════════════════════════════════════════════════════════════════════════ */

:root {
  /* Core Color Palette */
  --bg-main: #09070D;
  --bg-surface: #171020;
  --bg-card: #21172C;
  --bg-card-hover: #2c1f3b;
  --bg-elevated: #281a38;
  
  /* Primary Accent & Glows */
  --purple-primary: #B66AFF;
  --purple-light: #c88aff;
  --purple-dark: #9744e8;
  --purple-glow: rgba(182, 106, 255, 0.35);
  --purple-soft: rgba(182, 106, 255, 0.12);
  --purple-subtle: rgba(182, 106, 255, 0.06);
  --purple-border: rgba(182, 106, 255, 0.16);
  --purple-border-hover: rgba(182, 106, 255, 0.45);
  
  /* Typography Colors */
  --text-main: #F2EEF5;
  --text-secondary: #B9A8C9;
  --text-muted: #7d6b91;
  --text-on-purple: #ffffff;
  
  /* Typography Families */
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  
  /* Radius Tokens */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-pill: 9999px;
  
  /* Elevation Shadows */
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.35);
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.45);
  --shadow-card-hover: 0 16px 40px rgba(10, 5, 20, 0.7);
  --shadow-purple-glow: 0 0 25px rgba(182, 106, 255, 0.35);
  --shadow-dock: 0 -8px 30px rgba(0, 0, 0, 0.55);
  
  /* Transitions */
  --transition: all 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Reset & Smooth Scroll */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-bottom: 96px; /* Spacing for fixed mobile bottom dock */
  position: relative;
}

/* Lucide Icon Base Styling */
.lucide, i[data-lucide] {
  width: 20px;
  height: 20px;
  stroke-width: 1.9px;
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }
}

/* ══════════════════════════════════════════════════════════════════════════
   APP HEADER (EDITORIAL NAVIGATION)
   ══════════════════════════════════════════════════════════════════════════ */
.app-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(9, 7, 13, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--purple-border);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .header-inner {
    padding: 0 1.5rem;
    height: 70px;
  }
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--text-main);
}

.brand-book-icon {
  width: 24px;
  height: 24px;
  color: var(--purple-primary);
  filter: drop-shadow(0 0 8px rgba(182, 106, 255, 0.5));
}

.brand-text {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.12rem;
  letter-spacing: 2px;
  color: var(--text-main);
  text-transform: uppercase;
}

/* Desktop Navigation Links */
.desktop-nav-links {
  display: none;
  align-items: center;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .desktop-nav-links {
    display: flex;
  }
}

.desktop-nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: var(--transition);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.desktop-nav-link:hover, .desktop-nav-link.active {
  color: var(--text-main);
  background: var(--purple-soft);
}

.desktop-nav-link.badge-pill {
  background: rgba(182, 106, 255, 0.15);
  border: 1px solid var(--purple-border);
  color: var(--purple-light);
}

/* Header Right Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.header-icon-btn {
  background: var(--bg-surface);
  border: 1px solid var(--purple-border);
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.header-icon-btn:hover {
  background: var(--bg-card);
  border-color: var(--purple-primary);
  color: var(--text-main);
  transform: translateY(-1px);
}

.header-icon-btn .notif-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 7px;
  height: 7px;
  background-color: var(--purple-primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--purple-primary);
}

/* ══════════════════════════════════════════════════════════════════════════
   HERO EDITORIAL CARD (THE PERSONAL KNOWLEDGE ARCHIVE)
   ══════════════════════════════════════════════════════════════════════════ */
.hero-section {
  padding: 1.2rem 0 1rem;
}

@media (min-width: 768px) {
  .hero-section {
    padding: 1.8rem 0 1.5rem;
  }
}

.hero-editorial-card {
  position: relative;
  border-radius: var(--radius-xl);
  border: 1px solid var(--purple-border);
  overflow: hidden;
  background-color: var(--bg-surface);
  background-image: url('../images/hero-mountains.jpg');
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center bottom;
  box-shadow: var(--shadow-card);
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(9, 7, 13, 0.84) 0%,
    rgba(23, 16, 32, 0.52) 48%,
    rgba(9, 7, 13, 0.94) 100%
  );
  pointer-events: none;
  z-index: 1;
}

.hero-content-wrapper {
  position: relative;
  z-index: 2;
  padding: 2.2rem 1.4rem 2rem;
  max-width: 680px;
}

@media (min-width: 768px) {
  .hero-content-wrapper {
    padding: 3.4rem 2.5rem 3rem;
  }
}

.hero-kicker {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 0.85rem;
  opacity: 0.9;
}

.hero-editorial-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5.8vw, 3.4rem);
  font-weight: 600;
  line-height: 1.15;
  color: var(--text-main);
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.hero-editorial-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 1.6rem;
  max-width: 520px;
}

@media (min-width: 768px) {
  .hero-editorial-desc {
    font-size: 1.05rem;
  }
}

.hero-buttons-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.btn-hero-explore {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: var(--purple-primary);
  color: #ffffff;
  padding: 0.75rem 1.35rem;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(182, 106, 255, 0.4);
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-hero-explore:hover {
  background: var(--purple-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(182, 106, 255, 0.55);
}

.btn-hero-how {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: rgba(33, 23, 44, 0.75);
  border: 1px solid var(--purple-border);
  color: var(--text-main);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  backdrop-filter: blur(10px);
}

.btn-hero-how:hover {
  background: rgba(182, 106, 255, 0.15);
  border-color: var(--purple-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

/* Slider Indicator Dots */
.hero-slider-dots {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-slider-dots .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(185, 168, 201, 0.35);
  transition: var(--transition);
}

.hero-slider-dots .dot.active {
  width: 22px;
  border-radius: var(--radius-pill);
  background: var(--purple-primary);
  box-shadow: 0 0 10px rgba(182, 106, 255, 0.5);
}

/* ══════════════════════════════════════════════════════════════════════════
   MAIN SEARCH BAR (ACCESIBLE & DESTACADO)
   ══════════════════════════════════════════════════════════════════════════ */
.search-section {
  padding: 0.6rem 0 1.2rem;
}

.main-search-box {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  transition: var(--transition);
  box-shadow: var(--shadow-subtle);
}

.main-search-box:focus-within {
  border-color: var(--purple-primary);
  background: var(--bg-card);
  box-shadow: 0 0 20px rgba(182, 106, 255, 0.22);
}

.search-box-icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  margin-right: 0.75rem;
  transition: var(--transition);
}

.main-search-box:focus-within .search-box-icon {
  color: var(--purple-primary);
}

.main-search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.95rem;
}

.main-search-input::placeholder {
  color: var(--text-muted);
}

.search-clear-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.search-clear-btn:hover {
  color: var(--text-main);
}

/* ══════════════════════════════════════════════════════════════════════════
   EXPLORA POR CONOCIMIENTO (CATEGORY TILES)
   ══════════════════════════════════════════════════════════════════════════ */
.knowledge-section {
  padding: 1rem 0 1.6rem;
}

.section-title-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.3px;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 1.35rem;
  }
}

.section-view-all {
  color: var(--purple-light);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: var(--transition);
}

.section-view-all:hover {
  color: #ffffff;
  transform: translateX(3px);
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.65rem;
}

@media (min-width: 768px) {
  .knowledge-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 0.85rem;
  }
}

.knowledge-card {
  background: var(--bg-surface);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-md);
  padding: 1.15rem 0.5rem 1rem;
  text-align: center;
  text-decoration: none;
  color: var(--text-main);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
}

.knowledge-card:hover, .knowledge-card.active {
  background: var(--bg-card);
  border-color: var(--purple-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(182, 106, 255, 0.2);
}

.knowledge-card-icon {
  width: 26px;
  height: 26px;
  color: var(--purple-primary);
  transition: var(--transition);
}

.knowledge-card:hover .knowledge-card-icon {
  transform: scale(1.1);
  color: var(--purple-light);
}

.knowledge-card-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

/* ══════════════════════════════════════════════════════════════════════════
   SELECCIÓN EDITORIAL (EDITORIAL HIGHLIGHTS SHELF)
   ══════════════════════════════════════════════════════════════════════════ */
.editorial-selection-section {
  padding: 1rem 0 1.6rem;
}

.editorial-shelf {
  display: flex;
  gap: 0.85rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 0.4rem 0 1rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--purple-border) transparent;
}

.editorial-shelf::-webkit-scrollbar {
  height: 4px;
}

.editorial-shelf::-webkit-scrollbar-track {
  background: rgba(182, 106, 255, 0.08);
  border-radius: var(--radius-pill);
}

.editorial-shelf::-webkit-scrollbar-thumb {
  background: var(--purple-primary);
  border-radius: var(--radius-pill);
  box-shadow: 0 0 8px rgba(182, 106, 255, 0.4);
}

.editorial-mini-card {
  flex: 0 0 148px;
  scroll-snap-align: start;
  background: var(--bg-card);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

@media (min-width: 768px) {
  .editorial-mini-card {
    flex: 0 0 175px;
  }
}

.editorial-mini-card:hover {
  transform: translateY(-4px);
  border-color: var(--purple-primary);
  box-shadow: var(--shadow-card-hover);
}

.editorial-cover-wrap {
  width: 100%;
  aspect-ratio: 1 / 1.45;
  background-color: var(--bg-surface);
  position: relative;
  overflow: hidden;
}

.editorial-cover-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.editorial-mini-card:hover .editorial-cover-wrap img {
  transform: scale(1.05);
}

.editorial-mini-info {
  padding: 0.65rem 0.6rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.editorial-mini-title {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 0.25rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.editorial-mini-author {
  font-size: 0.74rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 0.45rem;
}

.editorial-mini-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.editorial-mini-badge {
  font-size: 0.68rem;
  color: var(--purple-light);
  background: var(--purple-soft);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-mini-fav {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 3px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.btn-mini-fav:hover, .btn-mini-fav.active {
  color: var(--purple-primary);
}

.btn-mini-fav.active svg {
  fill: var(--purple-primary);
}

/* ══════════════════════════════════════════════════════════════════════════
   RECOMENDACIÓN DEL DÍA (EDITORIAL BANNER)
   ══════════════════════════════════════════════════════════════════════════ */
.daily-recommendation-section {
  padding: 1rem 0 2rem;
}

.daily-rec-card {
  background: linear-gradient(135deg, #171020 0%, #21172C 100%);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
  position: relative;
  min-height: 150px;
}

.daily-rec-text-side {
  padding: 1.6rem 1.4rem;
  z-index: 2;
  flex: 1 1 60%;
  max-width: 62%;
}

@media (min-width: 768px) {
  .daily-rec-text-side {
    padding: 2.2rem 2rem;
  }
}

.daily-rec-kicker {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--purple-light);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.45rem;
}

.daily-rec-title {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 3.2vw, 1.85rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.daily-rec-desc {
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-secondary);
  margin-bottom: 1.1rem;
  max-width: 420px;
}

.daily-rec-btn-circle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--purple-primary);
  border: none;
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(182, 106, 255, 0.45);
  transition: var(--transition);
}

.daily-rec-btn-circle:hover {
  background: var(--purple-light);
  transform: translateX(4px) scale(1.05);
  box-shadow: 0 6px 22px rgba(182, 106, 255, 0.6);
}

.daily-rec-img-side {
  position: relative;
  flex: 0 0 40%;
  height: 100%;
  min-height: 150px;
  max-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.daily-rec-img-side img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  transform: scale(1.08);
}

@media (max-width: 639px) {
  .daily-rec-card {
    min-height: 135px;
    border-radius: var(--radius-lg);
  }
  .daily-rec-text-side {
    padding: 1.1rem 0.65rem 1.1rem 1.1rem;
    flex: 1 1 65%;
    max-width: 66%;
  }
  .daily-rec-kicker {
    font-size: 0.62rem;
    margin-bottom: 0.25rem;
    letter-spacing: 1.2px;
  }
  .daily-rec-title {
    font-size: 1.15rem;
    margin-bottom: 0.35rem;
  }
  .daily-rec-desc {
    font-size: 0.78rem;
    line-height: 1.35;
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .daily-rec-btn-circle {
    width: 36px;
    height: 36px;
  }
  .daily-rec-img-side {
    flex: 0 0 35%;
    min-height: 135px;
    max-height: 150px;
  }
  .daily-rec-img-side img {
    transform: scale(1.18) translateX(6%);
  }
}

/* ══════════════════════════════════════════════════════════════════════════
   CATÁLOGO GENERAL (SCREEN 2 IN MOCKUP)
   ══════════════════════════════════════════════════════════════════════════ */
.catalog-section {
  padding: 1.5rem 0 3rem;
}

.catalog-header-area {
  margin-bottom: 1.25rem;
}

.catalog-main-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4.5vw, 2.5rem);
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.35rem;
  letter-spacing: -0.5px;
}

.catalog-main-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* Horizontal Scrollable Filter Pills */
.filter-pills-row {
  display: flex;
  gap: 0.55rem;
  overflow-x: auto;
  padding: 0.5rem 0 1rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.filter-pills-row::-webkit-scrollbar {
  display: none;
}

.filter-pill {
  flex-shrink: 0;
  background: var(--bg-surface);
  border: 1px solid var(--purple-border);
  color: var(--text-secondary);
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-pill);
  font-size: 0.86rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  white-space: nowrap;
}

.filter-pill:hover {
  background: var(--bg-card);
  color: var(--text-main);
  border-color: rgba(182, 106, 255, 0.35);
}

.filter-pill.active {
  background: var(--purple-primary);
  border-color: var(--purple-primary);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(182, 106, 255, 0.4);
}

/* Secondary Meta Sort & Results Count Bar */
.catalog-meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding: 0 0.2rem;
}

.results-count {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
}

.sort-select-wrapper {
  position: relative;
}

.sort-select {
  appearance: none;
  background: var(--bg-surface);
  border: 1px solid var(--purple-border);
  color: var(--text-secondary);
  padding: 0.45rem 2.1rem 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-family: var(--font-sans);
  cursor: pointer;
  outline: none;
  transition: var(--transition);
}

.sort-select:focus, .sort-select:hover {
  border-color: var(--purple-primary);
  color: var(--text-main);
}

.sort-select-arrow {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-muted);
  width: 14px;
  height: 14px;
}

/* ══════════════════════════════════════════════════════════════════════════
   BOOKS GRID (2 COLUMNS IN MOBILE · RESPONSIVE DESKTOP)
   ══════════════════════════════════════════════════════════════════════════ */
.books-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
}

@media (min-width: 600px) {
  .books-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }
}

@media (min-width: 860px) {
  .books-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }
}

@media (min-width: 1100px) {
  .books-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 1.35rem;
  }
}

/* Individual Book Card (Matching Screen 2 in Mockup) */
.book-card {
  background: var(--bg-card);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  position: relative;
}

.book-card:hover {
  transform: translateY(-5px);
  border-color: var(--purple-primary);
  box-shadow: 0 12px 35px rgba(10, 5, 20, 0.7);
}

.card-cover-container {
  width: 100%;
  aspect-ratio: 1 / 1.45;
  background-color: var(--bg-surface);
  position: relative;
  overflow: hidden;
}

.card-cover-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.45s ease;
}

.book-card:hover .card-cover-container img {
  transform: scale(1.05);
}

/* Format & AI Badge on Cover */
.card-floating-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(9, 7, 13, 0.78);
  border: 1px solid rgba(182, 106, 255, 0.3);
  backdrop-filter: blur(8px);
  color: var(--purple-light);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: var(--radius-xs);
  display: inline-flex;
  align-items: center;
  gap: 3px;
  z-index: 2;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.card-details {
  padding: 0.8rem 0.75rem 0.75rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 0.28rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-author {
  font-size: 0.78rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 0.65rem;
}

.card-meta-row {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-category-pill {
  font-size: 0.7rem;
  color: var(--text-secondary);
  background: rgba(182, 106, 255, 0.08);
  border: 1px solid rgba(182, 106, 255, 0.15);
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  max-width: 100px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-transform: capitalize;
}

.card-fav-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  border-radius: var(--radius-xs);
}

.card-fav-btn:hover, .card-fav-btn.active {
  color: var(--purple-primary);
}

.card-fav-btn.active svg {
  fill: var(--purple-primary);
  stroke: var(--purple-primary);
}

/* Empty State */
.catalog-empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 4rem 1rem;
  background: var(--bg-surface);
  border: 1px dashed var(--purple-border);
  border-radius: var(--radius-xl);
  margin: 1.5rem 0;
}

.empty-state-icon {
  width: 48px;
  height: 48px;
  color: var(--purple-primary);
  margin-bottom: 1rem;
  opacity: 0.8;
}

.empty-state-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.empty-state-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 420px;
  margin: 0 auto 1.5rem;
}

/* ══════════════════════════════════════════════════════════════════════════
   SOLICITUD DE LIBROS (10 HORAS) — SECCIÓN PRESERVADA & REFINADA
   ══════════════════════════════════════════════════════════════════════════ */
.requests-section {
  padding: 2.5rem 0 3.5rem;
  border-top: 1px solid var(--purple-border);
}

.section-editorial-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 2.2rem;
}

.section-editorial-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.6rem;
}

.section-editorial-header p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.requests-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 860px) {
  .requests-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2rem;
  }
}

.request-card, .request-tracker {
  background: var(--bg-surface);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-xl);
  padding: 1.6rem;
  box-shadow: var(--shadow-card);
}

@media (min-width: 768px) {
  .request-card, .request-tracker {
    padding: 2.2rem;
  }
}

.timer-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(182, 106, 255, 0.15);
  border: 1px solid var(--purple-border);
  color: var(--purple-light);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 0.75rem;
}

.request-card-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.request-card-header p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.4rem;
}

.request-form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-field label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-field input, .form-field textarea {
  background: var(--bg-card);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  outline: none;
  transition: var(--transition);
}

.form-field input:focus, .form-field textarea:focus {
  border-color: var(--purple-primary);
  background: #2a1e38;
  box-shadow: 0 0 15px rgba(182, 106, 255, 0.2);
}

.btn-request-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  background: var(--purple-primary);
  color: #ffffff;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 18px rgba(182, 106, 255, 0.4);
  margin-top: 0.4rem;
}

.btn-request-submit:hover {
  background: var(--purple-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(182, 106, 255, 0.55);
}

.tracker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--purple-border);
}

.tracker-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.tracker-count {
  font-size: 0.8rem;
  color: var(--purple-light);
  font-weight: 600;
}

.request-items-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  max-height: 480px;
  overflow-y: auto;
  padding-right: 0.35rem;
}

.request-item-card {
  background: var(--bg-card);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  transition: var(--transition);
}

.request-item-card:hover {
  border-color: rgba(182, 106, 255, 0.4);
}

.req-item-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.4rem;
}

.req-item-id {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--purple-light);
}

.req-item-status {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: var(--radius-xs);
  text-transform: uppercase;
}

.req-item-status.processing {
  background: rgba(234, 179, 8, 0.15);
  color: #facc15;
}

.req-item-status.ready {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.req-item-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.2rem;
}

.req-item-author {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-bottom: 0.6rem;
}

.req-progress-bar-bg {
  width: 100%;
  height: 5px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-pill);
  overflow: hidden;
  margin-bottom: 0.4rem;
}

.req-progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #9744e8, #B66AFF);
  border-radius: var(--radius-pill);
  transition: width 0.4s ease;
}

.req-item-time {
  font-size: 0.74rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ══════════════════════════════════════════════════════════════════════════
   BENEFICIOS DE LA LECTURA & REFLEXIÓN
   ══════════════════════════════════════════════════════════════════════════ */
.benefits-section {
  padding: 2.5rem 0 3.5rem;
  border-top: 1px solid var(--purple-border);
}

.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .benefits-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.benefit-card {
  background: var(--bg-surface);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: var(--transition);
}

.benefit-card:hover {
  transform: translateY(-4px);
  border-color: var(--purple-primary);
  box-shadow: var(--shadow-card);
}

.benefit-icon {
  width: 32px;
  height: 32px;
  color: var(--purple-primary);
  margin-bottom: 0.85rem;
}

.benefit-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.benefit-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* Frase del Día */
.quote-section {
  padding: 2rem 0 3rem;
  text-align: center;
}

.quote-card {
  background: var(--bg-surface);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-xl);
  padding: 2rem 1.5rem;
  max-width: 780px;
  margin: 0 auto;
  position: relative;
}

.quote-text {
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  font-style: italic;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.quote-author {
  font-size: 0.88rem;
  color: var(--purple-light);
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* ══════════════════════════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════════════════════════ */
.app-footer {
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--purple-border);
  background: var(--bg-main);
  text-align: center;
}

.footer-social, .footer-social-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.footer-social-btn {
  background: var(--bg-surface);
  border: 1px solid var(--purple-border);
  color: var(--text-secondary);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: var(--transition);
}

.footer-social-btn:hover {
  background: var(--bg-card);
  border-color: var(--purple-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

.footer-text {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.secret-admin-trigger {
  cursor: default;
  transition: var(--transition);
}

/* ══════════════════════════════════════════════════════════════════════════
   FIXED MOBILE BOTTOM DOCK (EXACT MATCH TO MOCKUP)
   ══════════════════════════════════════════════════════════════════════════ */
.mobile-bottom-dock {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(23, 16, 32, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-top: 1px solid var(--purple-border);
  padding: 0.4rem 0 calc(env(safe-area-inset-bottom, 0px) + 0.35rem);
  box-shadow: var(--shadow-dock);
}

@media (min-width: 860px) {
  .mobile-bottom-dock {
    display: none; /* Hide on large desktop where top nav covers everything */
  }
}

.dock-inner {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  align-items: center;
  width: 100%;
  max-width: 440px;
  margin: 0 auto;
  padding: 0 4px;
}

.dock-item {
  background: transparent;
  border: none;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 0.25rem 2px;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  min-width: 0;
  width: 100%;
}

.dock-item svg, .dock-item i {
  width: 19px;
  height: 19px;
  color: var(--text-muted);
  transition: var(--transition);
}

.dock-label {
  font-size: 0.58rem;
  font-weight: 500;
  letter-spacing: -0.3px;
  color: var(--text-muted);
  transition: var(--transition);
  white-space: nowrap;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
}

.dock-item:hover {
  color: var(--text-main);
}

.dock-item:hover svg, .dock-item:hover .dock-label {
  color: var(--text-main);
}

/* Active State: Vibrant Purple */
.dock-item.active svg, .dock-item.active i {
  color: var(--purple-primary);
  filter: drop-shadow(0 0 8px rgba(182, 106, 255, 0.5));
  transform: translateY(-1px);
}

.dock-item.active .dock-label {
  color: var(--purple-primary);
  font-weight: 600;
}

/* ══════════════════════════════════════════════════════════════════════════
   MODAL OVERLAYS & PREVIEW (LUXURY EDITORIAL OBSIDIAN)
   ══════════════════════════════════════════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1100;
  background: rgba(9, 7, 13, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-xl);
  max-width: 760px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 1.8rem;
  position: relative;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7);
  animation: modalScaleUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalScaleUp {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--purple-border);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  z-index: 10;
}

.modal-close:hover {
  background: var(--purple-primary);
  color: #ffffff;
  border-color: var(--purple-primary);
}

.preview-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .preview-layout {
    grid-template-columns: 200px 1fr;
    gap: 1.8rem;
  }
}

.preview-cover-side {
  width: 100%;
}

.preview-cover-side img {
  width: 100%;
  aspect-ratio: 1 / 1.45;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--purple-border);
  box-shadow: var(--shadow-card);
}

.preview-info-side {
  display: flex;
  flex-direction: column;
}

.preview-badges-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.75rem;
}

.preview-category {
  background: var(--purple-soft);
  border: 1px solid var(--purple-border);
  color: var(--purple-light);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: var(--radius-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.modal-collection-pill {
  background: rgba(182, 106, 255, 0.18);
  border: 1px solid var(--purple-primary);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: var(--radius-xs);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.modal-collection-pill:hover {
  background: var(--purple-primary);
  box-shadow: 0 0 12px rgba(182, 106, 255, 0.4);
}

.preview-title {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 3.5vw, 1.85rem);
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 0.35rem;
}

.preview-author {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.ai-insights-box {
  background: var(--bg-card);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  margin-bottom: 1rem;
}

.ai-insights-title {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--purple-light);
  letter-spacing: 0.6px;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 5px;
}

.ai-tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.ai-tag-pill {
  background: rgba(182, 106, 255, 0.1);
  border: 1px solid rgba(182, 106, 255, 0.2);
  color: var(--text-main);
  font-size: 0.76rem;
  padding: 3px 8px;
  border-radius: var(--radius-xs);
}

.preview-description {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 1.4rem;
}

/* Harvard Creator Exclusive Notice */
.harvard-creator-notice {
  background: linear-gradient(135deg, rgba(165, 28, 48, 0.15) 0%, rgba(33, 23, 44, 0.6) 100%);
  border: 1px solid rgba(165, 28, 48, 0.35);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1.25rem;
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
}

.notice-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(165, 28, 48, 0.3);
  color: #ff6b81;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.notice-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: #ff6b81;
  margin-bottom: 0.25rem;
}

.notice-text {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0.6rem;
}

.btn-support-creator {
  background: #A51C30;
  color: #ffffff;
  border: none;
  padding: 0.45rem 0.95rem;
  border-radius: var(--radius-xs);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-support-creator:hover {
  background: #c8233b;
}

/* Direct Action Buttons */
.modal-direct-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
  margin-bottom: 0.85rem;
}

@media (min-width: 500px) {
  .modal-direct-actions {
    grid-template-columns: 1fr 1.2fr;
  }
}

.btn-direct-read {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--purple-border);
  color: var(--text-main);
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-direct-read:hover {
  background: rgba(182, 106, 255, 0.15);
  border-color: var(--purple-primary);
}

.btn-direct-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--purple-primary);
  border: none;
  color: #ffffff;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 18px rgba(182, 106, 255, 0.4);
}

.btn-direct-download:hover {
  background: var(--purple-light);
  transform: translateY(-1px);
}

.modal-share-bar {
  display: flex;
  gap: 0.5rem;
}

.btn-copy-link, .btn-whatsapp-share {
  flex: 1;
  background: transparent;
  border: 1px solid var(--purple-border);
  color: var(--text-secondary);
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: var(--transition);
}

.btn-copy-link:hover, .btn-whatsapp-share:hover {
  background: var(--bg-card);
  color: var(--text-main);
  border-color: var(--purple-primary);
}

/* ══════════════════════════════════════════════════════════════════════════
   MODAL QR & REDES SOCIALES (LUXURY EDITORIAL CARDS)
   ══════════════════════════════════════════════════════════════════════════ */
.social-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 1.25rem 0;
}

.social-follow-card {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: rgba(33, 23, 44, 0.75);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  text-decoration: none !important;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.social-follow-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(182, 106, 255, 0.05), transparent);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

.social-follow-card:hover {
  background: rgba(44, 31, 59, 0.95);
  border-color: var(--purple-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5), 0 0 16px rgba(182, 106, 255, 0.2);
}

.social-follow-card:hover::before {
  opacity: 1;
}

.social-card-icon-box {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1.25rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
}

.social-card-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  flex: 1;
  min-width: 0;
}

.social-card-title {
  font-family: var(--font-sans);
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--text-main) !important;
  text-decoration: none !important;
  line-height: 1.3;
}

.social-card-sub {
  font-size: 0.75rem;
  color: var(--text-secondary) !important;
  text-decoration: none !important;
  line-height: 1.3;
  margin-top: 2px;
}

.social-card-action {
  flex-shrink: 0;
}

.social-card-pill {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid currentColor;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: var(--transition);
}

.social-follow-card:hover .social-card-pill {
  background: rgba(182, 106, 255, 0.15);
  transform: translateX(2px);
}

/* Modal Section Divider */
.modal-section-divider {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin: 1.4rem 0 1.1rem;
}

.modal-section-divider::before,
.modal-section-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--purple-border), transparent);
}

.modal-section-divider span {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  white-space: nowrap;
}

.qr-code-frame {
  background: #ffffff;
  padding: 12px;
  border-radius: var(--radius-md);
  display: inline-block;
  margin: 1.2rem auto;
}

.qr-code-frame img {
  display: block;
  width: 190px;
  height: 190px;
}

.qr-links-row {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-top: 1rem;
}

.btn-qr-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  color: #ffffff;
  transition: var(--transition);
}

.btn-qr-link.btn-telegram {
  background: linear-gradient(135deg, #229ED9 0%, #1778a6 100%);
  border: 1px solid rgba(34, 158, 217, 0.4);
  box-shadow: 0 4px 14px rgba(34, 158, 217, 0.25);
}

.btn-qr-link.btn-instagram {
  background: linear-gradient(45deg, #f09433, #dc2743, #bc1888);
  border: 1px solid rgba(220, 39, 67, 0.4);
  box-shadow: 0 4px 14px rgba(220, 39, 67, 0.25);
}

.btn-qr-link.btn-facebook {
  background: linear-gradient(135deg, #1877F2 0%, #0d5bb5 100%);
  border: 1px solid rgba(24, 119, 242, 0.4);
  box-shadow: 0 4px 14px rgba(24, 119, 242, 0.25);
}

.btn-qr-link:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.btn-confirmed-download {
  width: 100%;
  background: linear-gradient(135deg, #B66AFF 0%, #9744e8 100%);
  border: 1px solid rgba(182, 106, 255, 0.5);
  color: #ffffff;
  padding: 0.85rem 1.15rem;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  box-shadow: 0 4px 16px rgba(182, 106, 255, 0.35);
  transition: var(--transition);
  letter-spacing: 0.2px;
}

.btn-confirmed-download:hover {
  background: linear-gradient(135deg, #c88aff 0%, #a855f7 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(182, 106, 255, 0.55);
}

.btn-skip-download {
  width: 100%;
  background: transparent;
  border: 1px solid var(--purple-border);
  color: var(--text-secondary);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
}

.btn-skip-download:hover {
  background: rgba(182, 106, 255, 0.08);
  border-color: var(--purple-primary);
  color: var(--text-main);
  transform: translateY(-1px);
}
  color: var(--text-main);
  background: var(--bg-card);
}

/* ══════════════════════════════════════════════════════════════════════════
   LECTOR EN PANTALLA COMPLETA
   ══════════════════════════════════════════════════════════════════════════ */
.reader-modal {
  padding: 0;
}

.reader-modal-content {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  border-radius: 0;
  border: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-main);
}

.reader-toolbar {
  height: 56px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--purple-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
}

.reader-frame-wrapper {
  flex: 1;
  width: 100%;
  height: calc(100% - 56px);
  background: #000000;
}

.fullscreen-pdf-frame {
  width: 100%;
  height: 100%;
  border: none;
}

.btn-reader-action {
  background: var(--purple-primary);
  color: #ffffff;
  border: none;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-xs);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}

.reader-close-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 6px;
  margin-left: 0.75rem;
}

/* ══════════════════════════════════════════════════════════════════════════
   TOAST NOTIFICATION
   ══════════════════════════════════════════════════════════════════════════ */
.toast {
  position: fixed;
  bottom: 84px;
  left: 50%;
  transform: translateX(-50%) translateY(30px);
  background: var(--bg-card);
  border: 1px solid var(--purple-primary);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.15rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), var(--shadow-purple-glow);
  z-index: 1200;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 90vw;
}

@media (min-width: 860px) {
  .toast {
    bottom: 30px;
  }
}

.toast.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.toast-text {
  display: flex;
  flex-direction: column;
}

.toast-text strong {
  font-size: 0.86rem;
  color: var(--text-main);
}

.toast-text span {
  font-size: 0.76rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   COLLECTION HIGHLIGHT BANNER & HERO PILLS
   ========================================================================== */
.hero-featured-pill-row {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
  width: 100%;
}

.hero-collections-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--purple-light);
  font-weight: 700;
  margin-right: 0.2rem;
}

.hero-featured-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.9rem;
  background: rgba(23, 16, 32, 0.88);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-pill);
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.82rem;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .hero-featured-pill-row {
    margin-top: 0.75rem;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 0.45rem;
    padding: 0.15rem 0 0.4rem;
  }
  .hero-featured-pill-row::-webkit-scrollbar {
    display: none;
  }
  .hero-collections-label {
    flex-shrink: 0;
    font-size: 0.66rem;
    letter-spacing: 0.05em;
    margin-right: 0.15rem;
  }
  .hero-featured-pill {
    padding: 0.35rem 0.65rem;
    font-size: 0.76rem;
    gap: 0.35rem;
  }
  .hero-featured-pill .pill-badge {
    font-size: 0.68rem;
    padding: 0.14rem 0.42rem;
  }
}

.hero-featured-pill:hover {
  transform: translateY(-2px);
  background: var(--bg-card-hover);
}

.hero-featured-pill.pill-dummies:hover {
  border-color: rgba(234, 179, 8, 0.6);
  box-shadow: 0 6px 20px rgba(234, 179, 8, 0.22);
}

.hero-featured-pill.pill-historia:hover {
  border-color: rgba(217, 119, 6, 0.6);
  box-shadow: 0 6px 20px rgba(217, 119, 6, 0.22);
}

.hero-featured-pill.pill-harvard:hover {
  border-color: rgba(225, 29, 72, 0.6);
  box-shadow: 0 6px 20px rgba(225, 29, 72, 0.22);
}

.hero-featured-pill.pill-emprendedores:hover {
  border-color: rgba(16, 185, 129, 0.6);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.22);
}

.hero-featured-pill .pill-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.18rem 0.5rem;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.hero-featured-pill .pill-badge.badge-dummies {
  background: rgba(234, 179, 8, 0.18);
  color: #FACC15;
  border: 1px solid rgba(234, 179, 8, 0.35);
}

.hero-featured-pill .pill-badge.badge-historia {
  background: rgba(217, 119, 6, 0.18);
  color: #F59E0B;
  border: 1px solid rgba(217, 119, 6, 0.35);
}

.hero-featured-pill .pill-badge.badge-harvard {
  background: rgba(225, 29, 72, 0.18);
  color: #FB7185;
  border: 1px solid rgba(225, 29, 72, 0.35);
}

.hero-featured-pill .pill-badge.badge-emprendedores {
  background: rgba(16, 185, 129, 0.18);
  color: #34D399;
  border: 1px solid rgba(16, 185, 129, 0.35);
}

.hero-featured-pill .pill-title {
  font-weight: 500;
  color: var(--text-main);
}

.hero-featured-pill .pill-count {
  font-size: 0.74rem;
  color: var(--text-secondary);
}

.hero-featured-pill .pill-action {
  color: var(--purple-light);
  font-size: 0.75rem;
  display: inline-flex;
  align-items: center;
  transition: transform 0.2s ease;
}

.hero-featured-pill:hover .pill-action {
  transform: translateX(3px);
  color: #ffffff;
}

/* ==========================================================================
   APARTADO DE COLECCIONES ESPECIALES (DUMMIES, BREVE HISTORIA, HARVARD)
   ========================================================================== */
.special-collections-section {
  padding: 2.8rem 0 1.5rem;
  position: relative;
}

.special-collections-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.1rem;
  margin-top: 1.25rem;
}

@media (min-width: 1080px) {
  .special-collections-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.collection-card-item {
  background: linear-gradient(145deg, rgba(23, 16, 32, 0.95) 0%, rgba(33, 23, 44, 0.85) 100%);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.3rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
  cursor: pointer;
}

.collection-card-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.collection-card-item.card-dummies::before {
  background: linear-gradient(90deg, transparent, #EAB308, transparent);
}

.collection-card-item.card-historia::before {
  background: linear-gradient(90deg, transparent, #D97706, transparent);
}

.collection-card-item.card-harvard::before {
  background: linear-gradient(90deg, transparent, #E11D48, transparent);
}

.collection-card-item.card-emprendedores::before {
  background: linear-gradient(90deg, transparent, #10B981, transparent);
}

.collection-card-item:hover {
  transform: translateY(-4px);
}

.collection-card-item.card-dummies:hover {
  border-color: rgba(234, 179, 8, 0.45);
  box-shadow: 0 10px 32px rgba(234, 179, 8, 0.16);
}

.collection-card-item.card-historia:hover {
  border-color: rgba(217, 119, 6, 0.45);
  box-shadow: 0 10px 32px rgba(217, 119, 6, 0.16);
}

.collection-card-item.card-harvard:hover {
  border-color: rgba(225, 29, 72, 0.45);
  box-shadow: 0 10px 32px rgba(225, 29, 72, 0.16);
}

.collection-card-item.card-emprendedores:hover {
  border-color: rgba(16, 185, 129, 0.45);
  box-shadow: 0 10px 32px rgba(16, 185, 129, 0.16);
}

.collection-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.collection-top-badge {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.24rem 0.55rem;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.collection-top-badge.badge-dummies {
  background: rgba(234, 179, 8, 0.16);
  border: 1px solid rgba(234, 179, 8, 0.35);
  color: #FACC15;
}

.collection-top-badge.badge-historia {
  background: rgba(217, 119, 6, 0.16);
  border: 1px solid rgba(217, 119, 6, 0.35);
  color: #F59E0B;
}

.collection-top-badge.badge-harvard {
  background: rgba(225, 29, 72, 0.16);
  border: 1px solid rgba(225, 29, 72, 0.35);
  color: #FB7185;
}

.collection-top-badge.badge-emprendedores {
  background: rgba(16, 185, 129, 0.16);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #34D399;
}

.collection-count-pill {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.18rem 0.5rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
}

.collection-card-content {
  margin-bottom: 1rem;
}

.collection-item-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.45rem;
  letter-spacing: -0.01em;
}

.collection-item-desc {
  font-size: 0.84rem;
  line-height: 1.48;
  color: var(--text-secondary);
  margin-bottom: 0.85rem;
}

.collection-tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.collection-tag-chip {
  font-size: 0.68rem;
  padding: 0.14rem 0.45rem;
  border-radius: var(--radius-xs);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
  color: var(--text-secondary);
}

.collection-card-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.btn-collection-explore {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.6rem 0.95rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-collection-explore.btn-dummies {
  background: linear-gradient(135deg, #FACC15 0%, #EAB308 100%);
  color: #09070D;
  box-shadow: 0 4px 16px rgba(234, 179, 8, 0.28);
}

.btn-collection-explore.btn-dummies:hover {
  background: #FDE047;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(234, 179, 8, 0.4);
}

.btn-collection-explore.btn-historia {
  background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
  color: #09070D;
  box-shadow: 0 4px 16px rgba(217, 119, 6, 0.28);
}

.btn-collection-explore.btn-historia:hover {
  background: #FBBF24;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(217, 119, 6, 0.4);
}

.btn-collection-explore.btn-harvard {
  background: linear-gradient(135deg, #E11D48 0%, #BE123C 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(225, 29, 72, 0.28);
}

.btn-collection-explore.btn-harvard:hover {
  background: #F43F5E;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(225, 29, 72, 0.4);
}

.btn-collection-explore.btn-emprendedores {
  background: linear-gradient(135deg, #34D399 0%, #10B981 100%);
  color: #09070D;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.28);
}

.btn-collection-explore.btn-emprendedores:hover {
  background: #6EE7B7;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-collection-share {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--purple-border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.btn-collection-share:hover {
  background: var(--purple-soft);
  color: var(--purple-light);
  border-color: var(--purple-primary);
  transform: translateY(-2px);
}

.collections-carousel-dots {
  display: none;
  justify-content: center;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.85rem;
}

.c-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: var(--transition);
}

.c-dot.active {
  width: 22px;
  border-radius: var(--radius-pill);
  background: var(--purple-primary);
  box-shadow: 0 0 10px rgba(182, 106, 255, 0.5);
}

@media (max-width: 768px) {
  .special-collections-section {
    padding: 1.5rem 0 0.85rem;
  }
  .special-collections-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 0.75rem;
    padding: 0.2rem 0.25rem 0.5rem;
    scrollbar-width: none;
    margin-top: 0.85rem;
  }
  .special-collections-grid::-webkit-scrollbar {
    display: none;
  }
  .collection-card-item {
    flex: 0 0 84vw;
    max-width: 315px;
    scroll-snap-align: center;
    padding: 1.15rem 1rem;
    border-radius: var(--radius-md);
  }
  .collection-item-title {
    font-size: 1.15rem;
    margin-bottom: 0.35rem;
  }
  .collection-item-desc {
    font-size: 0.8rem;
    line-height: 1.4;
    margin-bottom: 0.65rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .collection-tags-row {
    gap: 0.28rem;
    flex-wrap: nowrap;
    overflow: hidden;
  }
  .collection-tag-chip {
    font-size: 0.66rem;
    padding: 0.12rem 0.38rem;
    white-space: nowrap;
  }
  .collection-card-actions {
    padding-top: 0.75rem;
    margin-top: 0.4rem;
    gap: 0.45rem;
  }
  .btn-collection-explore {
    padding: 0.52rem 0.85rem;
    font-size: 0.78rem;
  }
  .btn-collection-share {
    width: 32px;
    height: 32px;
  }
  .collections-carousel-dots {
    display: flex;
  }
}

.collection-highlight-banner {
  margin-bottom: 1.5rem;
  animation: fadeInDown 0.3s ease;
}

.harvard-collection-card {
  background: linear-gradient(135deg, #171020 0%, #21172C 100%);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.6rem;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.harvard-collection-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--purple-primary), transparent);
}

.hbr-banner-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.hbr-banner-badge-group {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.hbr-banner-badge {
  background: var(--purple-soft);
  border: 1px solid var(--purple-border);
  color: var(--purple-light);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-pill);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.hbr-banner-count {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.hbr-direct-link-badge {
  color: var(--purple-light);
  font-size: 0.78rem;
  font-family: monospace;
  text-decoration: none;
  background: var(--purple-soft);
  border: 1px dashed var(--purple-border);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-xs);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  transition: var(--transition);
}

.hbr-direct-link-badge:hover {
  background: var(--purple-primary);
  color: #ffffff;
  border-style: solid;
}

.hbr-banner-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.45rem;
}

.hbr-banner-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.55;
  margin-bottom: 1.2rem;
  max-width: 820px;
}

.hbr-share-box {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  background: rgba(9, 7, 13, 0.55);
  border: 1px solid var(--purple-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  flex-wrap: wrap;
}

.hbr-link-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 220px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-xs);
  padding: 0.4rem 0.65rem;
}

.hbr-link-icon {
  color: var(--purple-primary);
  font-size: 0.82rem;
}

.hbr-link-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--purple-light);
  font-family: monospace;
  font-size: 0.8rem;
}

.hbr-share-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.btn-hbr-copy, .btn-hbr-wa {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-xs);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-hbr-copy {
  background: var(--purple-primary);
  border: none;
  color: #ffffff;
}

.btn-hbr-copy:hover {
  background: var(--purple-light);
  transform: translateY(-1px);
}

.btn-hbr-wa {
  background: rgba(37, 211, 102, 0.15);
  border: 1px solid rgba(37, 211, 102, 0.35);
  color: #25D366;
}

.btn-hbr-wa:hover {
  background: #25D366;
  color: #ffffff;
  transform: translateY(-1px);
}

/* --- Coleccion Teologica Contemporanea (Sapphire / Royal Blue) --- */
.hero-featured-pill.pill-teologia:hover {
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.16);
}
.hero-featured-pill .pill-badge.badge-teologia {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.3);
}
.collection-card-item.card-teologia::before {
  background: linear-gradient(90deg, transparent, #3b82f6, transparent);
}
.collection-card-item.card-teologia:hover {
  border-color: rgba(59, 130, 246, 0.45);
  box-shadow: 0 10px 32px rgba(59, 130, 246, 0.16);
}
.collection-top-badge.badge-teologia {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.35);
}
.btn-collection-explore.btn-teologia {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
}
.btn-collection-explore.btn-teologia:hover {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
}

/* --- Coleccion Libros de Administracion (Executive Cyan / Sky Blue) --- */
.hero-featured-pill.pill-administracion:hover {
  border-color: rgba(14, 165, 233, 0.5);
  box-shadow: 0 4px 16px rgba(14, 165, 233, 0.16);
}
.hero-featured-pill .pill-badge.badge-administracion {
  background: rgba(14, 165, 233, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(14, 165, 233, 0.3);
}
.collection-card-item.card-administracion::before {
  background: linear-gradient(90deg, transparent, #0ea5e9, transparent);
}
.collection-card-item.card-administracion:hover {
  border-color: rgba(14, 165, 233, 0.45);
  box-shadow: 0 10px 32px rgba(14, 165, 233, 0.16);
}
.collection-top-badge.badge-administracion {
  background: rgba(14, 165, 233, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(14, 165, 233, 0.35);
}
.btn-collection-explore.btn-administracion {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  color: #ffffff;
}
.btn-collection-explore.btn-administracion:hover {
  background: linear-gradient(135deg, #0ea5e9, #0284c7);
}