/* ==========================================================================
   TwoGees Modern Clear White & Blue Design System & Library CSS Engine
   Expansive Canvas · High Cognitive Clarity · Modern Tech/SaaS Precision
   ========================================================================== */

:root {
  /* ── Canvas & Pure White Card Surfaces ── */
  --tg-bg: #F8FAFC;
  --tg-surface-card: #FFFFFF;
  --tg-surface-elevated: #F1F5F9;
  --tg-surface-subtle: #F8FAFC;
  --tg-surface-nav: rgba(255, 255, 255, 0.90);

  /* ── Modern Cool Slate Borders ── */
  --tg-border: #E2E8F0;
  --tg-border-strong: #CBD5E1;
  --tg-border-focus: #2563EB;

  /* ── High-Contrast Modern Typography ── */
  --tg-text: #0F172A;
  --tg-text-secondary: #475569;
  --tg-text-muted: #64748B;
  --tg-text-subtle: #94A3B8;

  /* ── Modern Royal & Sapphire Blue Brand ── */
  --tg-brand: #2563EB;
  --tg-brand-hover: #1D4ED8;
  --tg-brand-active: #1E40AF;
  --tg-brand-glow: rgba(37, 99, 235, 0.22);
  --tg-brand-surface: #EFF6FF;
  --tg-brand-border: #BFDBFE;

  /* ── Auxiliary Status Colors ── */
  --tg-emerald: #059669;
  --tg-emerald-surface: #ECFDF5;
  --tg-emerald-border: #A7F3D0;
  --tg-indigo: #4F46E5;
  --tg-cyan: #0284C7;

  /* ── Soft Modern Shadows ── */
  --tg-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --tg-shadow-card: 0 4px 20px -2px rgba(37, 99, 235, 0.05), 0 2px 6px -1px rgba(0, 0, 0, 0.04);
  --tg-shadow-hover: 0 14px 32px -4px rgba(37, 99, 235, 0.12), 0 4px 10px -2px rgba(0, 0, 0, 0.04);
}

/* ── Custom Sleek Scrollbars ─────────────────────────────────────────────── */
.custom-scrollbar::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
.custom-scrollbar::-webkit-scrollbar-track {
  background: transparent;
}
.custom-scrollbar::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 999px;
}
.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background: #2563EB;
}

/* Hide scrollbar for clean horizontal swipe */
.no-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.no-scrollbar::-webkit-scrollbar {
  display: none;
}

/* ── Desktop Sidebar & Layout ────────────────────────────────────────────── */
.library-sidebar {
  position: sticky;
  top: 96px;
  height: calc(100vh - 110px);
  overflow-y: auto;
}

.sidebar-nav-item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 9px 13px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
  color: #475569;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  background: transparent;
}

.sidebar-nav-item:hover {
  color: #0F172A;
  background: #F1F5F9;
  transform: translateX(2px);
}

.sidebar-nav-item.active {
  color: #FFFFFF !important;
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%) !important;
  box-shadow: 0 4px 14px -3px rgba(37, 99, 235, 0.45);
}

.sidebar-nav-item.active .badge-count {
  background: rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
}

/* Series Item in Sidebar */
.series-sidebar-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 6px 10px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 500;
  color: #64748B;
  transition: all 0.15s ease;
  text-align: left;
}

.series-sidebar-btn:hover {
  background: #F1F5F9;
  color: #0F172A;
}

.series-sidebar-btn.active {
  background: #EFF6FF;
  color: #2563EB;
  font-weight: 700;
  border-left: 3px solid #2563EB;
}

/* ── Horizontal Series Snap Rails ────────────────────────────────────────── */
.series-rail-track {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-left: 4px;
  padding-bottom: 14px;
  padding-top: 4px;
}

.series-rail-card {
  flex: 0 0 280px;
  scroll-snap-align: start;
}

@media (min-width: 640px) {
  .series-rail-card {
    flex: 0 0 310px;
  }
}

@media (min-width: 1280px) {
  .series-rail-card {
    flex: 0 0 330px;
  }
}

@media (min-width: 1600px) {
  .series-rail-card {
    flex: 0 0 345px;
  }
}

/* Rail Navigation Arrow Buttons */
.rail-nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  color: #0F172A;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}

.rail-nav-btn:hover:not(:disabled) {
  background: #2563EB;
  color: #FFFFFF;
  border-color: #2563EB;
  transform: scale(1.08);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.rail-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ── Category Bento Navigator ────────────────────────────────────────────── */
.category-bento-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

@media (min-width: 640px) {
  .category-bento-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .category-bento-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 14px;
  }
}

.category-bento-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 15px 16px;
  border-radius: 18px;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  box-shadow: 0 2px 8px -2px rgba(0, 0, 0, 0.04);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  user-select: none;
  text-align: left;
  overflow: hidden;
}

.category-bento-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 18px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.6), transparent 60%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.category-bento-card:hover {
  transform: translateY(-2px);
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: 0 10px 24px -6px rgba(37, 99, 235, 0.12);
}

.category-bento-card .bento-eyebrow {
  font-size: 9.5px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #2563EB;
}

.category-bento-card .bento-title {
  font-size: 13.5px;
  font-weight: 800;
  color: #0F172A;
  line-height: 1.25;
}

.category-bento-card .bento-desc {
  font-size: 11px;
  font-weight: 500;
  color: #475569;
  line-height: 1.35;
}

.category-bento-card .bento-count {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 999px;
  background: #F1F5F9;
  border: 1px solid #E2E8F0;
  color: #334155;
}

.category-bento-card .bento-icon-box {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  background: #EFF6FF;
  border: 1px solid #DBEAFE;
  color: #2563EB;
  transition: transform 0.2s ease;
}

.category-bento-card:hover .bento-icon-box {
  transform: scale(1.08);
}

.category-bento-card.active {
  background: linear-gradient(140deg, #1E40AF 0%, #1D4ED8 45%, #0284C7 100%);
  border-color: #60A5FA;
  color: #FFFFFF !important;
  box-shadow: 0 10px 28px -4px rgba(37, 99, 235, 0.4), 0 0 0 1.5px #2563EB;
}

.category-bento-card.active .bento-title {
  color: #FFFFFF !important;
}

.category-bento-card.active .bento-desc {
  color: rgba(255, 255, 255, 0.88) !important;
}

.category-bento-card.active .bento-eyebrow {
  color: #BFDBFE !important;
}

.category-bento-card.active .bento-count {
  background: rgba(255, 255, 255, 0.22);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.35);
}

.category-bento-card.active .bento-icon-box {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.35);
  color: #FFFFFF;
  transform: scale(1.08);
}

/* ── Contextual Sub-Series Ribbon ────────────────────────────────────────── */
.sub-series-ribbon-wrap {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding: 6px 2px;
  scroll-behavior: smooth;
}

.sub-series-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 700;
  white-space: nowrap;
  border: 1px solid #E2E8F0;
  background: #FFFFFF;
  color: #475569;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  flex-shrink: 0;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.sub-series-pill:hover {
  border-color: #2563EB;
  color: #2563EB;
  transform: translateY(-1px);
}

.sub-series-pill.active {
  background: #2563EB;
  border-color: #2563EB;
  color: #FFFFFF !important;
  box-shadow: 0 4px 14px -3px rgba(37, 99, 235, 0.45);
}

.sub-series-pill.active .pill-count {
  background: rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
}

/* ── Category Spotlight Banner ───────────────────────────────────────────── */
.category-spotlight-bar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 18px 24px;
  border-radius: 22px;
  background: linear-gradient(135deg, #EFF6FF 0%, #F0F9FF 100%);
  border: 1px solid #BFDBFE;
  box-shadow: 0 4px 20px -4px rgba(37, 99, 235, 0.08);
  margin-bottom: 24px;
  animation: fadeIn 0.25s ease-out;
}

@media (min-width: 640px) {
  .category-spotlight-bar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.category-spotlight-bar .spotlight-title {
  color: #0F172A;
}

.category-spotlight-bar .spotlight-desc {
  color: #475569;
}

.category-spotlight-bar .spotlight-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.25);
  color: #2563EB;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.category-spotlight-bar .spotlight-reset-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 12px;
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  color: #1E293B;
  font-size: 12px;
  font-weight: 700;
  transition: all 0.2s ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.category-spotlight-bar .spotlight-reset-btn:hover {
  border-color: #2563EB;
  color: #2563EB;
  background: #F8FAFC;
}

/* ── Luxury Book Cover Stage ─────────────────────────────────────────────── */
.book-cover-stage {
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12), 0 8px 24px -4px rgba(0, 0, 0, 0.2);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.book-spine-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 10px;
  width: 2px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.05));
  box-shadow: 1px 0 3px rgba(0, 0, 0, 0.3);
  z-index: 10;
  pointer-events: none;
}

/* ── Filter Chips ────────────────────────────────────────────────────────── */
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid #E2E8F0;
  background: #FFFFFF;
  color: #475569;
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  white-space: nowrap;
}

.filter-chip:hover {
  border-color: #2563EB;
  color: #2563EB;
}

.filter-chip.active {
  background: #2563EB;
  border-color: #2563EB;
  color: #FFFFFF;
  box-shadow: 0 3px 10px -2px rgba(37, 99, 235, 0.4);
}

/* ── View Switcher Segmented Control ─────────────────────────────────────── */
.view-switcher {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  border-radius: 14px;
  background: #F1F5F9;
  border: 1px solid #E2E8F0;
}

.view-btn {
  padding: 6px 14px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 700;
  color: #64748B;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.18s ease;
  cursor: pointer;
}

.view-btn:hover {
  color: #0F172A;
}

.view-btn.active {
  background: #FFFFFF;
  color: #2563EB;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.12);
}

/* ── High-Clarity Structured Modern Data Table (List View) ────────────────── */
.modern-data-table-wrap {
  width: 100%;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}

.table-header-row {
  display: grid;
  grid-template-columns: minmax(320px, 3.2fr) minmax(180px, 1.6fr) minmax(130px, 1.2fr) minmax(110px, 1fr) 130px;
  align-items: center;
  gap: 16px;
  padding: 14px 24px;
  background: #F8FAFC;
  border-bottom: 1px solid #E2E8F0;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #64748B;
}

.table-data-row {
  display: grid;
  grid-template-columns: minmax(320px, 3.2fr) minmax(180px, 1.6fr) minmax(130px, 1.2fr) minmax(110px, 1fr) 130px;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid #F1F5F9;
  background: #FFFFFF;
  transition: all 0.18s ease;
}

.table-data-row:last-child {
  border-bottom: none;
}

.table-data-row:hover {
  background: #F8FAFC;
  box-shadow: 0 4px 16px -4px rgba(37, 99, 235, 0.08);
  border-color: #E2E8F0;
}

/* Mobile Fallback for Table Rows */
@media (max-width: 1023px) {
  .table-header-row {
    display: none;
  }
  .table-data-row {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 16px;
  }
}

/* ── Floating Mobile Trigger ─────────────────────────────────────────────── */
.mobile-filter-fab {
  position: fixed;
  bottom: 84px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 999px;
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 800;
  box-shadow: 0 8px 24px -4px rgba(37, 99, 235, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.25);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-filter-fab:hover {
  transform: translateX(-50%) scale(1.04);
  box-shadow: 0 12px 28px -4px rgba(37, 99, 235, 0.6);
}

/* ── Dark Theme Overrides (High-Tech Obsidian & Sapphire) ────────────────── */
[data-theme="dark"] {
  --tg-bg: #070B12;
  --tg-surface-card: #0E1626;
  --tg-surface-elevated: #152238;
  --tg-border: rgba(255, 255, 255, 0.08);
  --tg-text: #F8FAFC;
  --tg-text-secondary: #94A3B8;
  --tg-text-muted: #64748B;
}

[data-theme="dark"] .category-bento-card {
  background: rgba(14, 22, 38, 0.85);
  border-color: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

[data-theme="dark"] .category-bento-card:hover {
  border-color: rgba(96, 165, 250, 0.5);
  box-shadow: 0 10px 28px -6px rgba(0, 0, 0, 0.5), 0 0 16px -2px rgba(37, 99, 235, 0.3);
}

[data-theme="dark"] .category-bento-card.active {
  background: linear-gradient(145deg, #1E40AF 0%, #0F172A 100%);
  border-color: #60A5FA;
  box-shadow: 0 8px 30px -4px rgba(37, 99, 235, 0.5), 0 0 0 1.5px #38BDF8;
}

[data-theme="dark"] .category-bento-card .bento-title {
  color: #FAFAF9;
}

[data-theme="dark"] .category-bento-card .bento-desc {
  color: #94A3B8;
}

[data-theme="dark"] .category-bento-card .bento-count {
  background: rgba(255, 255, 255, 0.08);
  color: #E2E8F0;
  border-color: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .category-bento-card .bento-icon-box {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .sub-series-pill {
  background: rgba(14, 22, 38, 0.85);
  border-color: rgba(255, 255, 255, 0.08);
  color: #CBD5E1;
}

[data-theme="dark"] .sub-series-pill:hover {
  border-color: #60A5FA;
  color: #FFFFFF;
}

[data-theme="dark"] .sub-series-pill .pill-count {
  background: rgba(255, 255, 255, 0.08);
  color: #94A3B8;
}

[data-theme="dark"] .category-spotlight-bar {
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.3) 0%, rgba(15, 23, 42, 0.8) 100%);
  border-color: rgba(96, 165, 250, 0.3);
  box-shadow: 0 8px 30px -8px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .category-spotlight-bar .spotlight-title {
  color: #FAFAF9;
}

[data-theme="dark"] .category-spotlight-bar .spotlight-desc {
  color: #CBD5E1;
}

[data-theme="dark"] .category-spotlight-bar .spotlight-icon-wrap {
  background: rgba(37, 99, 235, 0.2);
  border-color: rgba(96, 165, 250, 0.4);
  color: #60A5FA;
}

[data-theme="dark"] .category-spotlight-bar .spotlight-reset-btn {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: #E2E8F0;
}

[data-theme="dark"] .category-spotlight-bar .spotlight-reset-btn:hover {
  background: rgba(255, 255, 255, 0.16);
  color: #FFFFFF;
}

[data-theme="dark"] .view-switcher {
  background: rgba(15, 23, 42, 0.8);
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .view-btn.active {
  background: #1E293B;
  color: #60A5FA;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .modern-data-table-wrap {
  background: #0E1626;
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .table-header-row {
  background: rgba(15, 23, 42, 0.8);
  border-color: rgba(255, 255, 255, 0.08);
  color: #94A3B8;
}

[data-theme="dark"] .table-data-row {
  background: #0E1626;
  border-color: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .table-data-row:hover {
  background: rgba(30, 41, 59, 0.6);
  border-color: rgba(96, 165, 250, 0.2);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}