/* =============================================
   AVsoft ERP Digital Book Brochure — Base Layout
   ============================================= */

/* Book Viewport Container */
.book-wrapper {
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  background: var(--grad-hero);
  overflow: hidden;
}

/* Glass Header Bar */
.book-header {
  height: 64px;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-glass-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
}

#navLogo,
.book-header__logo img,
.navbar__logo img {
  max-height: 42px !important;
  height: 42px !important;
  max-width: 220px !important;
  width: auto !important;
  object-fit: contain !important;
  display: block !important;
}

.book-header__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Main Book Stage */
.book-stage {
  flex: 1;
  position: relative;
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  overflow: hidden;
  perspective: 1200px;
}

/* Page Sheet Frame */
.book-page {
  position: absolute;
  inset: 1.25rem 1.5rem;
  background: var(--bg-surface);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2.5rem;
  box-shadow: var(--shadow-glass);
  opacity: 0;
  visibility: hidden;
  transform: rotateY(20deg) scale(0.96);
  transition: opacity var(--duration-page) var(--ease-page),
              transform var(--duration-page) var(--ease-page),
              visibility var(--duration-page);
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow-y: auto;
}

/* Active Page Turned */
.book-page.active {
  opacity: 1;
  visibility: visible;
  transform: rotateY(0deg) scale(1);
  z-index: 10;
}

/* Past Page Turned (Left Side) */
.book-page.past {
  opacity: 0;
  visibility: hidden;
  transform: rotateY(-20deg) scale(0.96);
  z-index: 1;
}

/* Glass Footer Controls */
.book-footer {
  height: 64px;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-glass-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--border-subtle);
  z-index: 100;
}

/* Header & Section Helpers */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 1.75rem;
}

.pill-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.95rem;
  background: var(--color-teal-glow);
  border: 1px solid var(--border-accent);
  color: var(--color-teal-light);
  font-size: var(--fs-xs);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius-pill);
  margin-bottom: 0.75rem;
}

[data-theme="light"] .pill-label {
  color: var(--color-teal-dark);
}

.section-header h2 {
  font-size: var(--fs-h2);
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.section-header .subtitle {
  font-size: var(--fs-body);
  color: var(--text-secondary);
  line-height: 1.5;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-teal) 0%, var(--color-teal-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="light"] .text-gradient {
  background: linear-gradient(135deg, var(--color-teal-dark) 0%, var(--color-teal) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#footerLogo { max-height: 42px !important; width: auto !important; }

/* Capa de profundidad y orientación dentro del libro */
.book-wrapper { isolation: isolate; }
.book-wrapper::before, .book-wrapper::after { content: ''; position: absolute; width: 32vw; aspect-ratio: 1; border-radius: 50%; filter: blur(14px); opacity: .36; pointer-events: none; z-index: -1; }
.book-wrapper::before { background: var(--accent-magenta); top: 15%; right: -12%; }
.book-wrapper::after { background: var(--color-teal); bottom: -20%; left: -12%; }
.book-progress { height: 3px; position: absolute; top: 64px; left: 0; right: 0; background: rgba(255,255,255,.08); z-index: 101; }
.book-progress span { display: block; width: 100%; height: 100%; background: var(--color-teal); box-shadow: 0 0 16px var(--color-teal); transform: scaleX(.1); transform-origin: left center; transition: transform 420ms var(--ease-page); }
.book-page { scrollbar-width: thin; scrollbar-color: var(--color-teal) transparent; }
:focus-visible { outline: 3px solid var(--color-teal); outline-offset: 3px; }
body.modal-open { overflow: hidden !important; }
@media (min-width: 768px) {
  .book-footer { gap: 1.5rem; }
  .page-btn { min-height: 46px; padding-inline: 1.65rem; }
}