/* Custom Typography & Reading Experience (Inspired by high-legibility editorial layouts / Justin Welsh style) */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --md-text-font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --md-code-font: 'JetBrains Mono', monospace;
  --md-typeset-font-size: 20px;
  --md-typeset-line-height: 1.7;
}

[data-md-color-scheme="slate"] {
  --md-default-bg-color: #0b0f19;
  --md-default-bg-color--light: #111827;
  --md-default-bg-color--lighter: #1e293b;
  --md-default-fg-color: #f8fafc;
  --md-default-fg-color--light: #e2e8f0;
  --md-default-fg-color--lighter: #94a3b8;
  --md-primary-fg-color: #6366f1;
  --md-accent-fg-color: #818cf8;
}

[data-md-color-scheme="default"] {
  --md-default-bg-color: #ffffff;
  --md-default-bg-color--light: #f8fafc;
  --md-default-bg-color--lighter: #e2e8f0;
  --md-default-fg-color: #0f172a;
  --md-default-fg-color--light: #334155;
  --md-default-fg-color--lighter: #64748b;
  --md-primary-fg-color: #4f46e5;
  --md-accent-fg-color: #6366f1;
}

/* Base Reading Typography */
.md-typeset {
  font-size: 20px !important;
  line-height: 1.75 !important;
  color: var(--md-default-fg-color) !important;
  letter-spacing: -0.011em;
}

.md-typeset h1 {
  font-size: 2.2rem !important;
  font-weight: 800 !important;
  letter-spacing: -0.03em !important;
  margin-bottom: 1.5rem !important;
  line-height: 1.25 !important;
  color: var(--md-default-fg-color) !important;
}

.md-typeset h2 {
  font-size: 1.65rem !important;
  font-weight: 700 !important;
  letter-spacing: -0.02em !important;
  margin-top: 2.5rem !important;
  margin-bottom: 1rem !important;
  color: var(--md-default-fg-color) !important;
}

.md-typeset h3 {
  font-size: 1.35rem !important;
  font-weight: 700 !important;
  margin-top: 2rem !important;
  color: var(--md-default-fg-color) !important;
}

.md-typeset h4 {
  font-size: 1.15rem !important;
  font-weight: 700 !important;
  color: var(--md-accent-fg-color) !important;
  margin-top: 1.75rem !important;
}

.md-typeset p {
  margin-bottom: 1.25rem !important;
  color: var(--md-default-fg-color) !important;
}

.md-typeset em {
  color: var(--md-default-fg-color--light) !important;
}

.md-typeset strong {
  color: var(--md-default-fg-color) !important;
}

/* Explicit Bullet List & Numbered List Styling */
.md-typeset ul {
  list-style-type: disc !important;
  margin: 1rem 0 1.5rem 1.5rem !important;
  padding: 0 !important;
}

.md-typeset ol {
  list-style-type: decimal !important;
  margin: 1rem 0 1.5rem 1.5rem !important;
  padding: 0 !important;
}

.md-typeset li {
  margin-bottom: 0.5rem !important;
  line-height: 1.7 !important;
  color: var(--md-default-fg-color) !important;
  display: list-item !important;
}

.md-typeset li::marker {
  color: var(--md-accent-fg-color, #818cf8) !important;
}

.deck-slide-card ul {
  list-style-type: disc !important;
  margin: 1.25rem 0 1.75rem 2rem !important;
  padding: 0 !important;
}

.deck-slide-card ol {
  list-style-type: decimal !important;
  margin: 1.25rem 0 1.75rem 2rem !important;
  padding: 0 !important;
}

.deck-slide-card li {
  margin-bottom: 0.75rem !important;
  line-height: 1.75 !important;
  font-size: 1.2rem !important;
  color: var(--md-default-fg-color) !important;
  display: list-item !important;
}

.deck-slide-card li::marker {
  color: var(--md-accent-fg-color, #818cf8) !important;
}

.md-typeset strong {
  font-weight: 700;
}

.md-typeset em {
  font-style: italic;
  color: var(--md-default-fg-color--light);
}

.md-typeset hr {
  margin: 2.5rem 0 !important;
  border-bottom: 1px solid rgba(150, 150, 150, 0.15) !important;
}

.md-content__inner {
  max-width: 880px !important;
  margin: 0 auto;
  padding-left: 1.5rem !important;
  padding-right: 1.5rem !important;
}

/* ==========================================================================
   PRESENTATION / SLIDE DECK MODE (TOGGLEABLE)
   ========================================================================== */

/* Toggle Button — small, tucked into the right TOC area, not blocking content */
.deck-toggle-btn {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--md-primary-fg-color, #6366f1);
  color: #ffffff;
  border: none;
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  font-family: var(--md-text-font);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s, background 0.2s;
}

.deck-toggle-btn:hover {
  opacity: 1;
  background: var(--md-accent-fg-color, #4f46e5);
}

.deck-toggle-btn svg {
  width: 14px;
  height: 14px;
}

/* Wikipedia-Style In-Page Contents Info Box */
.wiki-contents-box {
  background: var(--md-default-bg-color--light, #1e293b);
  border: 1px solid var(--md-default-bg-color--lighter, #334155);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0 2rem 0;
  display: inline-block;
  min-width: 280px;
  max-width: 100%;
}

[data-md-color-scheme="default"] .wiki-contents-box {
  background: #f1f5f9 !important;
  border: 1px solid #cbd5e1 !important;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.wiki-contents-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--md-default-fg-color);
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--md-default-bg-color--lighter, #334155);
  padding-bottom: 0.4rem;
}

[data-md-color-scheme="default"] .wiki-contents-header {
  border-bottom-color: #cbd5e1 !important;
  color: #0f172a !important;
}

.wiki-contents-toggle {
  background: none;
  border: none;
  color: var(--md-accent-fg-color, #6366f1);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 0;
  font-family: inherit;
  font-weight: 600;
}

.wiki-contents-list {
  list-style: none !important;
  margin: 0 !important;
  padding: 0 !important;
}

.wiki-contents-list li {
  margin: 0.35rem 0 !important;
  font-size: 0.9rem !important;
  line-height: 1.4 !important;
}

.wiki-contents-list li.depth-3 {
  padding-left: 1.2rem;
  font-size: 0.85rem !important;
}

.wiki-contents-list li.depth-4 {
  padding-left: 2rem;
  font-size: 0.8rem !important;
}

.wiki-contents-list a {
  color: var(--md-default-fg-color--light, #94a3b8);
  text-decoration: none;
  transition: color 0.15s;
}

[data-md-color-scheme="default"] .wiki-contents-list a {
  color: #334155 !important;
}

.wiki-contents-list a:hover {
  color: var(--md-accent-fg-color, #6366f1) !important;
  text-decoration: underline;
}



/* Link Contrast in Dark Mode */
[data-md-color-scheme="slate"] .md-typeset a {
  color: #93c5fd !important;
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: rgba(147, 197, 253, 0.4);
}

[data-md-color-scheme="slate"] .md-typeset a:hover {
  color: #dbeafe !important;
  text-decoration-color: #dbeafe;
}

/* Soft Blue Topbar (Light Mode) */
[data-md-color-scheme="default"] .md-header {
  background-color: #4a77b4 !important;
  color: #ffffff !important;
}

[data-md-color-scheme="default"] .md-header .md-header__title,
[data-md-color-scheme="default"] .md-header .md-header__button,
[data-md-color-scheme="default"] .md-header .header-fs-btn,
[data-md-color-scheme="default"] .md-header .header-export-btn {
  color: #ffffff !important;
}

/* Search Bar Icons - Fix back arrow & search icon visibility in light mode */
[data-md-color-scheme="default"] .md-header > .md-header__inner .md-search__icon {
  color: #ffffff !important;
}

[data-md-color-scheme="default"] .md-search__inner .md-search__icon,
[data-md-color-scheme="default"] .md-search__form .md-search__icon,
[data-md-color-scheme="default"] .md-search__input ~ .md-search__icon,
[data-md-color-scheme="default"] .md-search__input {
  color: #0f172a !important;
}

[data-md-color-scheme="default"] .md-tabs {
  background-color: #3d669e !important;
  color: #f1f5f9 !important;
}

.md-header__custom-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: auto;
  margin-right: 0.5rem;
  z-index: 10;
}

.header-fs-btn, .header-export-btn {
  background: transparent;
  border: none;
  color: currentColor !important;
  text-decoration: none !important;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 100%;
  opacity: 0.9;
  transition: opacity 0.2s, background-color 0.2s;
  box-sizing: border-box;
}

.header-fs-btn:hover, .header-export-btn:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.2);
}

[data-md-color-scheme="default"] .header-fs-btn:hover,
[data-md-color-scheme="default"] .header-export-btn:hover {
  background: rgba(0, 0, 0, 0.12);
}

/* Clickable Page Title */
.md-header__title {
  cursor: pointer !important;
}

/* Gamma-Style Segmented Navigation Bar (Positioned along bottom above controls) */
.deck-gamma-segments {
  position: fixed;
  bottom: 3.4rem;
  left: 0;
  right: 0;
  height: 18px;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0 16vw;
  z-index: 1005;
  background: transparent;
  box-sizing: border-box;
}

@media (max-width: 768px) {
  .deck-gamma-segments {
    padding: 0 4vw;
  }
}

.deck-segment-pill {
  flex: 1;
  height: 5px;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

[data-md-color-scheme="default"] .deck-segment-pill {
  background: rgba(0, 0, 0, 0.18);
}

.deck-segment-pill:hover {
  height: 8px;
  background: var(--md-accent-fg-color, #6366f1);
  transform: translateY(-1px);
}

.deck-segment-pill.active {
  height: 6px;
  background: var(--md-accent-fg-color, #6366f1);
  box-shadow: 0 0 8px var(--md-accent-fg-color, #6366f1);
}

.deck-segment-pill.passed {
  background: var(--md-primary-fg-color, #818cf8);
  opacity: 0.7;
}

/* Slide Deck Active — hide all chrome */
body.deck-mode-active {
  overflow: hidden !important;
}

body.deck-mode-active .md-header,
body.deck-mode-active .md-tabs,
body.deck-mode-active .md-sidebar,
body.deck-mode-active .md-footer {
  display: none !important;
}

body.deck-mode-active .md-main__inner,
body.deck-mode-active .md-content,
body.deck-mode-active .md-content__inner {
  max-width: 100vw !important;
  margin: 0 !important;
  padding: 0 !important;
  height: 100vh !important;
  width: 100vw !important;
}

/* Deck Container — true full viewport, inherits dynamic light/dark theme background */
.deck-container {
  display: none;
}

body.deck-mode-active .deck-container {
  display: flex;
  flex-direction: column;
  width: 100vw;
  height: 100vh;
  background: var(--md-default-bg-color, #0b0f19);
  color: var(--md-default-fg-color, #111827);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
}

/* Side Click Nav Zones (Left/Right 12% width) */
.deck-click-zone {
  position: fixed;
  top: 0;
  bottom: 3.5rem;
  width: 12vw;
  z-index: 1000;
  cursor: pointer;
}

.deck-click-zone.left {
  left: 0;
}

.deck-click-zone.right {
  right: 0;
}

/* Individual Slide — full screen with generous bottom padding so controls never obscure text */
.deck-slide-card {
  width: 100vw;
  height: 100vh;
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 3rem 14vw 6.5rem 14vw;
  box-sizing: border-box;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  display: none;
  animation: fadeInSlide 0.2s ease-out;
}

@media (max-width: 768px) {
  .deck-slide-card {
    padding: 2rem 1.25rem 6.5rem 1.25rem;
  }
}

.deck-slide-card.active {
  display: block;
}

@keyframes fadeInSlide {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Slide Typography — inherits theme colors directly */
.deck-slide-card h1 {
  font-size: 2.2rem !important;
  margin-bottom: 1.25rem !important;
  color: var(--md-default-fg-color) !important;
}

.deck-slide-card h2, .deck-slide-card h3 {
  font-size: 1.5rem !important;
  color: var(--md-default-fg-color) !important;
  margin-top: 1.5rem !important;
}

.deck-slide-card h4 {
  font-size: 1.25rem !important;
  color: var(--md-accent-fg-color, #6366f1) !important;
  margin-top: 1.25rem !important;
  margin-bottom: 0.75rem !important;
}

.deck-slide-card p, .deck-slide-card li {
  font-size: 1.15rem !important;
  line-height: 1.75 !important;
  color: var(--md-default-fg-color) !important;
}

.deck-slide-card em {
  color: var(--md-default-fg-color--light) !important;
}

.deck-slide-card strong {
  color: var(--md-default-fg-color) !important;
}

.deck-slide-card blockquote {
  border-left: 3px solid var(--md-accent-fg-color, #6366f1);
  padding-left: 1.25rem;
  color: var(--md-default-fg-color--light) !important;
}

.deck-slide-card hr {
  display: none;
}

/* Slide Controls Bar */
.deck-controls-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  background: var(--md-default-bg-color, #111827);
  border-top: 1px solid var(--md-default-bg-color--lighter, #374151);
  padding: 0.4rem 1rem;
  z-index: 1002;
  opacity: 0.85;
  transition: opacity 0.2s;
  height: 3.2rem;
  box-sizing: border-box;
}

.deck-controls-bar:hover {
  opacity: 1;
}

.deck-ctrl-btn {
  background: transparent;
  border: 1px solid var(--md-default-bg-color--lighter, #374151);
  color: var(--md-default-fg-color, #ffffff);
  font-size: 0.9rem;
  cursor: pointer;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: color 0.15s, background 0.15s;
}

.deck-ctrl-btn:hover {
  background: var(--md-default-bg-color--lighter, #374151);
}

.deck-progress-indicator {
  font-family: var(--md-code-font);
  font-size: 0.85rem;
  color: var(--md-default-fg-color, #9ca3af);
  font-weight: 600;
}

/* Gamma-style Side Drawer — ONLY in deck mode */
.deck-hover-trigger {
  display: none;
}

body.deck-mode-active .deck-hover-trigger {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  width: 20px;
  height: 100vh;
  z-index: 1003;
}

.deck-side-drawer {
  display: none;
}

body.deck-mode-active .deck-side-drawer {
  display: block;
  position: fixed;
  top: 0;
  left: -320px;
  width: 300px;
  height: 100vh;
  background: var(--md-default-bg-color, #0f172a);
  border-right: 1px solid var(--md-default-bg-color--lighter, #334155);
  z-index: 1004;
  padding: 1.5rem 1rem;
  box-sizing: border-box;
  overflow-y: auto;
  transition: left 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 4px 0 24px rgba(0,0,0,0.25);
}

body.deck-mode-active .deck-side-drawer.open,
body.deck-mode-active .deck-hover-trigger:hover + .deck-side-drawer,
body.deck-mode-active .deck-side-drawer:hover {
  left: 0;
}

.deck-drawer-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--md-default-fg-color--lighter, #94a3b8);
  margin-bottom: 0.75rem;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.deck-card-preview-item {
  padding: 0.6rem 0.8rem;
  border-radius: 6px;
  background: var(--md-default-bg-color--light, #1e293b);
  border: 1px solid var(--md-default-bg-color--lighter, #334155);
  margin-bottom: 0.5rem;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--md-default-fg-color, #cbd5e1);
  transition: all 0.15s;
}

.deck-card-preview-item:hover {
  border-color: var(--md-accent-fg-color, #6366f1);
  color: var(--md-accent-fg-color, #6366f1);
}

.deck-card-preview-item.active {
  border-color: var(--md-accent-fg-color, #6366f1);
  background: rgba(99, 102, 241, 0.12);
  color: var(--md-accent-fg-color, #818cf8);
  font-weight: 600;
}