/* =============================================
   LAMIM — USER MANUAL STYLING
   Glassmorphism, Dark/Light Themes, Responsive TOC
   ============================================= */

/* Modal Backdrop */
.manual-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  padding: 16px;
  animation: manualFadeIn 0.25s ease;
  overflow: hidden;
}

[data-theme="light"] .manual-modal-overlay {
  background: rgba(15, 23, 42, 0.45);
}

/* Modal Card */
.manual-modal-card {
  background: var(--color-surface-card, #0f172a);
  border: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
  border-radius: 24px;
  width: 100%;
  max-width: 860px;
  height: 85vh;
  max-height: 720px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05);
  animation: manualScaleUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
  position: relative;
}

[data-theme="light"] .manual-modal-card {
  background: #ffffff;
  border-color: rgba(15, 23, 42, 0.08);
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.15), 0 0 0 1px rgba(15, 23, 42, 0.04);
}

/* Modal Header */
.manual-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-border, rgba(255, 255, 255, 0.08));
  background: rgba(255, 255, 255, 0.02);
  flex-shrink: 0;
}

[data-theme="light"] .manual-modal-header {
  background: #f8fafc;
  border-bottom-color: rgba(15, 23, 42, 0.06);
}

.manual-header-title-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.manual-header-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.15), rgba(99, 102, 241, 0.15));
  border: 1px solid rgba(168, 85, 247, 0.3);
  border-radius: 14px;
  flex-shrink: 0;
  color: #c084fc;
}

[data-theme="light"] .manual-header-icon {
  background: linear-gradient(135deg, rgba(147, 51, 234, 0.1), rgba(79, 70, 229, 0.1));
  border-color: rgba(147, 51, 234, 0.25);
  color: #7c3aed;
}

.manual-header-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text-primary, #ffffff);
  margin: 0;
  letter-spacing: -0.01em;
}

[data-theme="light"] .manual-header-title {
  color: #0f172a;
}

.manual-header-sub {
  font-size: 12px;
  color: var(--color-text-muted, #94a3b8);
  margin: 2px 0 0 0;
}

.manual-close-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
  color: var(--color-text-muted, #94a3b8);
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.manual-close-btn:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.3);
  color: #ef4444;
  transform: scale(1.05);
}

[data-theme="light"] .manual-close-btn {
  background: #f1f5f9;
  border-color: #e2e8f0;
}

/* Modal Body Layout */
.manual-modal-body {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* Sidebar TOC */
.manual-toc {
  width: 250px;
  border-right: 1px solid var(--color-border, rgba(255, 255, 255, 0.08));
  background: rgba(0, 0, 0, 0.12);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
}

[data-theme="light"] .manual-toc {
  background: #f8fafc;
  border-right-color: rgba(15, 23, 42, 0.06);
}

.manual-toc-title {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted, #94a3b8);
  padding: 16px 20px 8px;
}

.manual-toc-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 12px;
  overflow-y: auto;
  flex: 1;
  -webkit-overflow-scrolling: touch;
}

.manual-toc-list::-webkit-scrollbar {
  width: 4px;
}

.manual-toc-list::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

.manual-toc-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 12px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-text-secondary, #94a3b8);
  font-size: 13px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: all 0.18s ease;
  width: 100%;
}

.manual-toc-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-primary, #ffffff);
}

[data-theme="light"] .manual-toc-item:hover {
  background: #f1f5f9;
  color: #0f172a;
}

.manual-toc-item.active {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.15), rgba(99, 102, 241, 0.15));
  border-color: rgba(168, 85, 247, 0.35);
  color: #c084fc;
  box-shadow: 0 2px 8px rgba(168, 85, 247, 0.12);
}

[data-theme="light"] .manual-toc-item.active {
  background: linear-gradient(135deg, rgba(147, 51, 234, 0.1), rgba(79, 70, 229, 0.1));
  border-color: rgba(147, 51, 234, 0.3);
  color: #7c3aed;
}

.manual-toc-item-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: currentColor;
}

.manual-toc-item-text {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.manual-toc-item-num {
  font-size: 10.5px;
  font-weight: 700;
  opacity: 0.5;
}

/* Main Content Area */
.manual-chapter-content {
  flex: 1;
  padding: 24px 32px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.manual-chapter-content.anim-fade {
  animation: manualChapterFade 0.2s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes manualChapterFade {
  from {
    opacity: 0.35;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.manual-chapter-content::-webkit-scrollbar {
  width: 6px;
}

.manual-chapter-content::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 6px;
}

[data-theme="light"] .manual-chapter-content::-webkit-scrollbar-thumb {
  background: rgba(15, 23, 42, 0.15);
}

.manual-chapter-header {
  margin-bottom: 18px;
}

.manual-chapter-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #a855f7;
  background: rgba(168, 85, 247, 0.1);
  border: 1px solid rgba(168, 85, 247, 0.25);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.manual-chapter-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text-primary, #ffffff);
  margin: 0 0 4px 0;
  letter-spacing: -0.015em;
}

[data-theme="light"] .manual-chapter-title {
  color: #0f172a;
}

.manual-chapter-subtitle {
  font-size: 13.5px;
  color: var(--color-text-muted, #94a3b8);
}

.manual-chapter-summary-box {
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid #8b5cf6;
  padding: 14px 16px;
  border-radius: 0 12px 12px 0;
  margin-bottom: 22px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-primary, #e2e8f0);
}

[data-theme="light"] .manual-chapter-summary-box {
  background: #f8fafc;
  color: #334155;
}

.manual-chapter-section {
  margin-bottom: 20px;
}

.manual-section-heading {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-primary, #ffffff);
  margin: 0 0 10px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

[data-theme="light"] .manual-section-heading {
  color: #0f172a;
}

.manual-section-list {
  margin: 0;
  padding-left: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.manual-section-list li {
  position: relative;
  padding-left: 20px;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--color-text-secondary, #cbd5e1);
}

[data-theme="light"] .manual-section-list li {
  color: #475569;
}

.manual-section-list li::before {
  content: '•';
  position: absolute;
  left: 4px;
  color: #8b5cf6;
  font-size: 18px;
  line-height: 1;
}

.manual-section-list li strong {
  color: var(--color-text-primary, #ffffff);
}

[data-theme="light"] .manual-section-list li strong {
  color: #0f172a;
}

/* Callouts */
.manual-callout-tip {
  display: flex;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 14px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #34d399;
  font-size: 13px;
  line-height: 1.5;
  margin-top: 18px;
}

[data-theme="light"] .manual-callout-tip {
  background: #ecfdf5;
  border-color: #a7f3d0;
  color: #047857;
}

.manual-callout-warn {
  display: flex;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 14px;
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.25);
  color: #fbbf24;
  font-size: 13px;
  line-height: 1.5;
  margin-top: 12px;
}

[data-theme="light"] .manual-callout-warn {
  background: #fffbeb;
  border-color: #fde68a;
  color: #b45309;
}

.manual-callout-icon {
  font-size: 18px;
  flex-shrink: 0;
}

.manual-callout-content {
  flex: 1;
}

/* Footer Navigation */
.manual-modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-top: 1px solid var(--color-border, rgba(255, 255, 255, 0.08));
  background: rgba(255, 255, 255, 0.02);
  flex-shrink: 0;
  gap: 16px;
}

[data-theme="light"] .manual-modal-footer {
  background: #f8fafc;
  border-top-color: rgba(15, 23, 42, 0.06);
}

.manual-footer-progress {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 140px;
}

.manual-footer-progress span {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-muted, #94a3b8);
}

.manual-progress-track {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
}

[data-theme="light"] .manual-progress-track {
  background: #e2e8f0;
}

.manual-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #8b5cf6, #3b82f6);
  border-radius: 999px;
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.manual-footer-btns {
  display: flex;
  align-items: center;
  gap: 10px;
}

.manual-btn {
  padding: 10px 18px;
  border-radius: 12px;
  font-size: 13.5px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.manual-btn-prev {
  background: transparent;
  border: 1px solid var(--color-border, rgba(255, 255, 255, 0.12));
  color: var(--color-text-secondary, #cbd5e1);
}

.manual-btn-prev:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.manual-btn-prev:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

[data-theme="light"] .manual-btn-prev {
  border-color: #cbd5e1;
  color: #475569;
}

.manual-btn-next {
  background: linear-gradient(135deg, #8b5cf6, #6366f1);
  border: none;
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(139, 92, 246, 0.3);
}

.manual-btn-next:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(139, 92, 246, 0.4);
}

.manual-btn-finish {
  background: linear-gradient(135deg, #10b981, #059669);
  border: none;
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.manual-btn-finish:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(16, 185, 129, 0.4);
}

/* Home Page Manual Pill Button */
.home-manual-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.15), rgba(99, 102, 241, 0.15));
  border: 1px solid rgba(168, 85, 247, 0.3);
  color: #c084fc;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 2px 8px rgba(168, 85, 247, 0.1);
  margin-top: 6px;
}

.home-manual-btn:hover {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.25), rgba(99, 102, 241, 0.25));
  border-color: rgba(168, 85, 247, 0.5);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(168, 85, 247, 0.2);
}

[data-theme="light"] .home-manual-btn {
  background: linear-gradient(135deg, rgba(147, 51, 234, 0.1), rgba(79, 70, 229, 0.1));
  border-color: rgba(147, 51, 234, 0.3);
  color: #7c3aed;
}

/* First-time Welcome Modal */
.manual-welcome-overlay {
  z-index: 100000;
}

.manual-welcome-card {
  background: var(--color-surface-card, #0f172a);
  border: 1px solid rgba(168, 85, 247, 0.3);
  border-radius: 26px;
  width: 100%;
  max-width: 480px;
  padding: 32px 28px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7), 0 0 40px rgba(168, 85, 247, 0.15);
  animation: manualScaleUp 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] .manual-welcome-card {
  background: #ffffff;
  border-color: rgba(147, 51, 234, 0.25);
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.15), 0 0 30px rgba(147, 51, 234, 0.1);
}

.manual-welcome-glow {
  position: absolute;
  top: -50px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

.manual-welcome-icon-wrap {
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.manual-welcome-logo {
  height: 52px;
  width: auto;
  object-fit: contain;
  display: block;
  margin: 0 auto;
  filter: drop-shadow(0 4px 14px rgba(168, 85, 247, 0.45));
}

.manual-welcome-title {
  font-size: 21px;
  font-weight: 800;
  color: var(--color-text-primary, #ffffff);
  margin: 0 0 8px 0;
  letter-spacing: -0.02em;
}

[data-theme="light"] .manual-welcome-title {
  color: #0f172a;
}

.manual-welcome-sub {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--color-text-muted, #94a3b8);
  margin: 0 0 22px 0;
}

[data-theme="light"] .manual-welcome-sub {
  color: #475569;
}

.manual-welcome-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border, rgba(255, 255, 255, 0.08));
  border-radius: 16px;
  padding: 14px 16px;
  margin-bottom: 24px;
  text-align: left;
}

[data-theme="light"] .manual-welcome-features {
  background: #f8fafc;
  border-color: #e2e8f0;
}

.manual-wf-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary, #cbd5e1);
}

[data-theme="light"] .manual-wf-item {
  color: #1e293b;
}

.manual-wf-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  color: #c084fc;
}

[data-theme="light"] .manual-wf-icon {
  color: #7c3aed;
}

.manual-welcome-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.manual-welcome-btn {
  width: 100%;
  padding: 13px;
  border-radius: 14px;
  font-size: 14px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.manual-welcome-btn.primary {
  background: linear-gradient(135deg, #8b5cf6, #6366f1);
  border: none;
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.35);
}

.manual-welcome-btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.45);
}

.manual-welcome-btn.secondary {
  background: transparent;
  border: 1px solid var(--color-border, rgba(255, 255, 255, 0.12));
  color: var(--color-text-muted, #94a3b8);
}

.manual-welcome-btn.secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-primary, #ffffff);
}

[data-theme="light"] .manual-welcome-btn.secondary {
  border-color: #cbd5e1;
  color: #334155;
}

[data-theme="light"] .manual-welcome-btn.secondary:hover {
  background: #f1f5f9;
  color: #0f172a;
}

/* Animations */
@keyframes manualFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

/* Mobile & Tablet Responsiveness */
@media (max-width: 768px) {
  .manual-modal-card {
    height: 90vh;
    max-height: none;
    border-radius: 20px;
  }

  .manual-modal-body {
    flex-direction: column;
  }

  .manual-toc {
    width: 100%;
    height: auto;
    max-height: 120px;
    border-right: none;
    border-bottom: 1px solid var(--color-border, rgba(255, 255, 255, 0.08));
  }

  .manual-toc-title {
    display: none;
  }

  .manual-toc-list {
    flex-direction: row;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 10px 12px;
    gap: 8px;
  }

  .manual-toc-item {
    width: auto;
    padding: 6px 12px;
    border-radius: 10px;
  }

  .manual-chapter-content {
    padding: 18px 20px;
  }

  .manual-chapter-title {
    font-size: 19px;
  }

  .manual-modal-footer {
    padding: 12px 18px;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .manual-footer-btns {
    width: 100%;
    justify-content: space-between;
  }

  .manual-btn {
    flex: 1;
  }
}