/* ═══════════════════════════════════════════════════════════════
   Golden Pi Wiki — Premium Material Theme Override
   Sacred geometry, golden ratio aesthetics, mathematical elegance
   ═══════════════════════════════════════════════════════════════ */

/* ── Google Fonts: Playfair Display (headings) + Inter (body) ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&display=swap');

/* ── CSS Custom Properties ── */
:root {
  --gp-gold: #d4a843;
  --gp-gold-light: #f0d080;
  --gp-gold-dark: #a07830;
  --gp-gold-glow: rgba(212, 168, 67, 0.25);
  --gp-navy: #0a1628;
  --gp-navy-light: #132044;
  --gp-navy-mid: #0f1d35;
  --gp-cream: #f5f0e8;
  --gp-text: #e8e0d0;
  --gp-text-muted: #a09880;
  --gp-border: rgba(212, 168, 67, 0.2);
  --gp-border-strong: rgba(212, 168, 67, 0.35);
  --gp-gradient: linear-gradient(135deg, var(--gp-gold-dark), var(--gp-gold), var(--gp-gold-light));
  --gp-gradient-reverse: linear-gradient(135deg, var(--gp-gold-light), var(--gp-gold), var(--gp-gold-dark));
  --gp-glass: rgba(10, 22, 40, 0.85);
  --gp-glass-heavy: rgba(10, 22, 40, 0.95);
}

/* ── Typography Override ── */
body, .md-typeset {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

h1, h2, h3, h4, h5, h6,
.md-header__topic,
.md-nav__title,
.md-footer__title {
  font-family: 'Playfair Display', 'Georgia', 'Times New Roman', serif;
  font-weight: 600;
}

/* ── Header / Navbar ── */
.md-header {
  background: var(--gp-glass-heavy) !important;
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--gp-border);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  transition: background 0.3s ease;
}

.md-header[data-md-state="shadow"] {
  background: rgba(10, 22, 40, 0.98) !important;
}

.md-header__button.md-logo {
  padding: 6px 0;
}

.md-header__button.md-logo img {
  filter: drop-shadow(0 0 8px var(--gp-gold-glow));
  transition: filter 0.3s ease;
}

.md-header__button.md-logo img:hover {
  filter: drop-shadow(0 0 14px var(--gp-gold-glow));
}

.md-header__topic {
  font-size: 1.05rem;
  letter-spacing: 0.5px;
  color: var(--gp-gold-light);
  text-shadow: 0 0 20px rgba(212, 168, 67, 0.15);
}

.md-header__topic:first-child {
  font-weight: 600;
}

/* ── Navigation Tabs ── */
.md-tabs {
  background: linear-gradient(180deg, rgba(15, 29, 53, 0.98), rgba(10, 22, 40, 0.95));
  border-bottom: 1px solid var(--gp-border);
  backdrop-filter: blur(8px);
}

.md-tabs__link {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  opacity: 1;
  color: var(--gp-gold-light);
  transition: all 0.3s ease;
  position: relative;
}

.md-tabs__link:hover,
.md-tabs__link--active {
  opacity: 1;
  color: var(--gp-gold-light);
}

/* Force the active tab visible too — Material's
   `.md-tabs__item--active .md-tabs__link { color: inherit }` has higher
   specificity and inherits the dark text color on the dark navbar. */
.md-tabs__item--active .md-tabs__link {
  opacity: 1;
  color: var(--gp-gold-light) !important;
}

.md-tabs__link--active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: var(--gp-gradient);
  border-radius: 2px;
  animation: tabGlow 2s ease-in-out infinite;
}

@keyframes tabGlow {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* ── Sidebar Navigation ── */
.md-sidebar {
  background: transparent;
}

.md-nav--primary .md-nav__title {
  background: linear-gradient(135deg, var(--gp-navy-mid), var(--gp-navy));
  color: var(--gp-gold-light);
  font-size: 0.9rem;
  border-bottom: 1px solid var(--gp-border);
}

.md-nav__item .md-nav__link {
  color: var(--gp-text);
  font-size: 0.8rem;
  transition: all 0.25s ease;
  border-left: 2px solid transparent;
  padding-left: 12px;
}

.md-nav__item .md-nav__link:hover,
.md-nav__item .md-nav__link--active {
  color: var(--gp-gold-light);
  border-left-color: var(--gp-gold);
}

.md-nav__item .md-nav__link--active {
  background: linear-gradient(90deg, rgba(212, 168, 67, 0.08), transparent);
}

/* Mobile nav drawer — force white text so it's never dark-on-dark */
.md-nav--primary .md-nav__link {
  color: var(--gp-text);
}

.md-nav--primary .md-nav__link:hover,
.md-nav--primary .md-nav__link--active {
  color: var(--gp-gold-light);
}

/* Table of Contents sidebar */
.md-sidebar--secondary .md-nav__item .md-nav__link {
  color: var(--gp-text-muted);
  border-left: none;
  padding-left: 0;
  font-size: 0.78rem;
}

.md-sidebar--secondary .md-nav__item .md-nav__link--active {
  color: var(--gp-gold-light);
  background: none;
  border-left: 2px solid var(--gp-gold);
  padding-left: 8px;
}

/* ── Main Content Typography ── */
.md-content {
  --md-typeset-a-color: var(--gp-gold);
  --md-typeset-color: var(--gp-text);
  --md-typeset-h1-color: var(--gp-gold-light);
  --md-typeset-h2-color: var(--gp-gold);
  --md-typeset-h3-color: var(--gp-gold);
  --md-typeset-kbd-color: var(--gp-gold-dark);
  --md-typeset-kbd-border-color: var(--gp-border-strong);
}

.md-typeset h1 {
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 0.5em;
  position: relative;
}

.md-typeset h1::after {
  content: '';
  display: block;
  width: 80px;
  height: 3px;
  background: var(--gp-gradient);
  border-radius: 3px;
  margin-top: 0.4em;
}

.md-typeset h2 {
  font-weight: 600;
  letter-spacing: -0.3px;
  position: relative;
  padding-bottom: 0.3em;
}

.md-typeset h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--gp-gradient);
  border-radius: 2px;
  opacity: 0.7;
}

.md-typeset h3 {
  font-weight: 600;
  color: var(--gp-gold);
}

.md-typeset a {
  color: var(--gp-gold);
  text-decoration: none;
  transition: all 0.2s ease;
  text-decoration-color: var(--gp-border-strong);
}

.md-typeset a:hover {
  color: var(--gp-gold-light);
  text-shadow: 0 0 12px var(--gp-gold-glow);
}

.md-typeset a:has(> code) {
  text-underline-offset: 2px;
}

/* ── Content Background / Container ── */
.md-main__inner {
  position: relative;
}

.md-content__inner {
  position: relative;
}

.md-content__inner::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(212, 168, 67, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(212, 168, 67, 0.02) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* ── Grid Cards (Home Page Cards) ── */
.grid.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  padding: 0;
  margin: 24px 0;
}

.md-typeset .grid.cards > ul,
.md-typeset .grid.cards > ol {
  display: contents;
  list-style: none;
  padding: 0;
  margin: 0;
}

.md-typeset .grid.cards > ul > li,
.md-typeset .grid.cards > ol > li {
  background: linear-gradient(145deg, rgba(15, 29, 53, 0.6), rgba(10, 22, 40, 0.8));
  border: 1px solid var(--gp-border);
  border-radius: 14px;
  padding: 28px 24px;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  list-style-type: none !important;
}

.md-typeset .grid.cards > ul > li::before,
.md-typeset .grid.cards > ol > li::before {
  display: none !important;
  content: none !important;
}

.md-typeset .grid.cards > ul > li::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gp-gradient);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.md-typeset .grid.cards > ul > li:hover::after {
  opacity: 1;
}

.md-typeset .grid.cards > ul > li:hover {
  transform: translateY(-4px);
  border-color: var(--gp-border-strong);
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.4),
    0 0 30px rgba(212, 168, 67, 0.08);
  background: linear-gradient(145deg, rgba(15, 29, 53, 0.8), rgba(10, 22, 40, 0.9));
}

.md-typeset .grid.cards > ul > li > p:first-child {
  font-size: 1.5rem;
  margin-bottom: 8px;
  color: var(--gp-gold-light);
}

.md-typeset .grid.cards > ul > li > p:first-child .twemoji,
.md-typeset .grid.cards > ul > li > p:first-child .md-icon {
  filter: drop-shadow(0 0 6px var(--gp-gold-glow));
}

.md-typeset .grid.cards > ul > li > p:nth-child(2) {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--gp-text);
  margin: 8px 0 16px;
  flex: 1;
}

.md-typeset .grid.cards > ul > li > p:last-child {
  margin-top: auto;
}

.md-typeset .grid.cards > ul > li > p:last-child a {
  display: inline-block;
  padding: 8px 20px;
  background: transparent;
  color: var(--gp-gold);
  border: 1px solid var(--gp-border-strong);
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.3s ease;
  text-decoration: none;
}

.md-typeset .grid.cards > ul > li > p:last-child a:hover {
  background: var(--gp-gradient);
  color: var(--gp-navy);
  border-color: transparent;
  box-shadow: 0 4px 15px var(--gp-gold-glow);
}

/* ── Home Page Hero ── */
.md-typeset .gp-hero {
  text-align: center;
  padding: 40px 20px 30px;
  margin: 0 0 40px;
  position: relative;
  border-radius: 16px;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(212, 168, 67, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 50% 100%, rgba(212, 168, 67, 0.04) 0%, transparent 50%);
  border: 1px solid var(--gp-border);
  overflow: hidden;
}

.md-typeset .gp-hero::before {
  content: 'Φ';
  position: absolute;
  top: -40px;
  right: -20px;
  font-family: 'Playfair Display', serif;
  font-size: 200px;
  font-weight: 700;
  color: rgba(212, 168, 67, 0.04);
  line-height: 1;
  pointer-events: none;
}

.md-typeset .gp-hero .gp-hero-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 12px;
  filter: drop-shadow(0 0 20px var(--gp-gold-glow));
}

.md-typeset .gp-hero .gp-hero-icon .twemoji {
  filter: drop-shadow(0 0 20px var(--gp-gold-glow));
}

.md-typeset .gp-hero h1 {
  font-family: 'Playfair Display', 'Georgia', serif;
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -1px;
  margin: 0 0 8px;
  background: var(--gp-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
  line-height: 1.2;
}

.md-typeset .gp-hero h1::after {
  display: none;
}

.md-typeset .gp-hero .gp-hero-formula {
  font-family: 'Playfair Display', 'Georgia', serif;
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--gp-gold-light);
  margin: 16px 0;
  letter-spacing: 1px;
  text-shadow: 0 0 30px rgba(212, 168, 67, 0.3);
}

.md-typeset .gp-hero .gp-hero-formula span {
  display: inline-block;
  animation: formulaPulse 3s ease-in-out infinite;
}

@keyframes formulaPulse {
  0%, 100% { text-shadow: 0 0 20px rgba(212, 168, 67, 0.2); }
  50% { text-shadow: 0 0 40px rgba(212, 168, 67, 0.5), 0 0 60px rgba(212, 168, 67, 0.2); }
}

.md-typeset .gp-hero .gp-hero-subtitle {
  font-size: 1.1rem;
  color: var(--gp-text-muted);
  max-width: 600px;
  margin: 8px auto 0;
  line-height: 1.6;
}

.md-typeset .gp-hero .gp-hero-tagline {
  font-size: 1.15rem;
  color: var(--gp-gold);
  font-style: italic;
  font-family: 'Playfair Display', serif;
  margin: 16px 0 0;
  opacity: 0.85;
}

/* ── Quick Links Section ── */
.md-typeset .gp-quick-links {
  margin: 32px 0 16px;
}

.md-typeset .gp-quick-links h2 {
  text-align: center;
  position: relative;
  padding-bottom: 12px;
}

.md-typeset .gp-quick-links h2::after {
  left: 50%;
  transform: translateX(-50%);
}

.md-typeset .gp-quick-links ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

.md-typeset .gp-quick-links ul li {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

.md-typeset .gp-quick-links ul li::before {
  display: none !important;
  content: none !important;
}

.md-typeset .gp-quick-links ul li a {
  display: inline-block;
  padding: 10px 22px;
  background: linear-gradient(145deg, rgba(15, 29, 53, 0.5), rgba(10, 22, 40, 0.6));
  border: 1px solid var(--gp-border);
  border-radius: 25px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gp-text-muted);
  text-decoration: none;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.md-typeset .gp-quick-links ul li a:hover {
  color: var(--gp-gold-light);
  border-color: var(--gp-border-strong);
  background: rgba(212, 168, 67, 0.1);
  box-shadow: 0 0 20px rgba(212, 168, 67, 0.1);
  transform: translateY(-1px);
}

/* ── Admonitions / Callouts ── */
.md-typeset .admonition,
.md-typeset details {
  border: 1px solid var(--gp-border-strong);
  border-radius: 12px;
  background: rgba(15, 29, 53, 0.5);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  font-size: 0.9rem;
}

.md-typeset .admonition>.admonition-title,
.md-typeset details>.admonition-title,
.md-typeset details>summary {
  background: rgba(212, 168, 67, 0.08);
  border-bottom: 1px solid var(--gp-border);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.3px;
}

.md-typeset .admonition.note,
.md-typeset details.note {
  border-color: var(--gp-border-strong);
}

.md-typeset .admonition.note>.admonition-title,
.md-typeset details.note>summary {
  background: rgba(212, 168, 67, 0.1);
}

.md-typeset .admonition.warning,
.md-typeset details.warning {
  border-color: rgba(255, 152, 0, 0.4);
}

.md-typeset .admonition.danger,
.md-typeset details.danger {
  border-color: rgba(244, 67, 54, 0.4);
}

.md-typeset .admonition.tip,
.md-typeset details.tip {
  border-color: rgba(76, 175, 80, 0.4);
}

/* ── Code Blocks ── */
.md-typeset pre > code {
  background: rgba(10, 22, 40, 0.8);
  border: 1px solid var(--gp-border);
  border-radius: 10px;
  font-size: 0.8rem;
}

.md-typeset code {
  background: rgba(212, 168, 67, 0.08);
  color: var(--gp-gold-light);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
}

.md-typeset pre > code::-webkit-scrollbar {
  height: 6px;
}

.md-typeset pre > code::-webkit-scrollbar-track {
  background: var(--gp-navy);
  border-radius: 3px;
}

.md-typeset pre > code::-webkit-scrollbar-thumb {
  background: var(--gp-gold-dark);
  border-radius: 3px;
}

/* ── Inline code in headers ── */
.md-typeset h1 code,
.md-typeset h2 code,
.md-typeset h3 code {
  background: transparent;
  color: inherit;
  padding: 0;
}

/* ── Tables ── */
.md-typeset table:not([class]) {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--gp-border);
}

.md-typeset table:not([class]) th {
  background: linear-gradient(135deg, rgba(212, 168, 67, 0.15), rgba(212, 168, 67, 0.08));
  color: var(--gp-gold-light);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.md-typeset table:not([class]) td {
  border-top: 1px solid var(--gp-border);
}

.md-typeset table:not([class]) tr:hover {
  background: rgba(212, 168, 67, 0.03);
}

/* ── Keyboard Shortcuts ── */
.md-typeset kbd {
  padding: 3px 8px;
  border-radius: 6px;
  background: linear-gradient(145deg, rgba(15, 29, 53, 0.8), rgba(10, 22, 40, 0.9));
  border: 1px solid var(--gp-border-strong);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  font-size: 0.8rem;
  color: var(--gp-gold-light);
}

/* ── Task Lists ── */
.md-typeset .task-list-control .task-list-indicator::before {
  background: var(--gp-navy-mid);
  border: 1px solid var(--gp-border-strong);
  border-radius: 4px;
}

.md-typeset [type=checkbox]:checked + .task-list-indicator::before {
  background: var(--gp-gold-dark);
  border-color: var(--gp-gold);
}

/* ── Details / Collapsible ── */
.md-typeset details {
  border-radius: 12px;
}

.md-typeset details>summary::before {
  color: var(--gp-gold);
}

.md-typeset details[open]>summary {
  border-bottom: 1px solid var(--gp-border);
}

/* ── Content Tabs ── */
.md-typeset .tabbed-set {
  border-radius: 12px;
  overflow: hidden;
}

.md-typeset .tabbed-set>input:first-child:checked~.tabbed-labels {
  border-bottom: 2px solid var(--gp-gold);
}

.md-typeset .tabbed-set>.tabbed-labels {
  background: rgba(10, 22, 40, 0.5);
}

.md-typeset .tabbed-set>.tabbed-labels>label {
  color: var(--gp-text-muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

.md-typeset .tabbed-set>.tabbed-labels>label:hover {
  color: var(--gp-gold-light);
}

.md-typeset .tabbed-set>input:checked+label {
  color: var(--gp-gold-light);
}

/* ── Footer ── */
.md-footer {
  background: linear-gradient(180deg, var(--gp-navy), rgba(8, 18, 34, 0.99));
  border-top: 1px solid var(--gp-border);
  position: relative;
}

.md-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gp-gold-dark), var(--gp-gold), var(--gp-gold-dark), transparent);
}

.md-footer-meta {
  background: rgba(0, 0, 0, 0.2);
  border-top: 1px solid var(--gp-border);
}

.md-footer-meta .md-footer-social {
  padding: 12px 0;
}

.md-footer-meta .md-footer-social a {
  color: var(--gp-text-muted);
  transition: all 0.3s ease;
}

.md-footer-meta .md-footer-social a:hover {
  color: var(--gp-gold-light);
  transform: translateY(-2px);
}

.md-footer-copyright {
  color: var(--gp-text-muted);
  font-size: 0.78rem;
  opacity: 0.8;
}

.md-footer-copyright a {
  color: var(--gp-gold);
}

.md-footer-copyright a:hover {
  color: var(--gp-gold-light);
}

/* ── Back-to-top Button ── */
.md-top {
  background: linear-gradient(135deg, var(--gp-navy-mid), var(--gp-navy));
  color: var(--gp-gold) !important;
  border: 1px solid var(--gp-border-strong);
  border-radius: 30px;
  padding: 10px 18px;
  font-size: 0.8rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.md-top:hover {
  background: var(--gp-gradient);
  color: var(--gp-navy) !important;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(212, 168, 67, 0.3);
}

.md-top .md-icon {
  filter: none;
}

.md-top:hover .md-icon {
  filter: brightness(0.2);
}

/* ── Search ── */
.md-search__overlay {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.md-search__inner {
  border-radius: 12px;
}

.md-search__form {
  background: var(--gp-navy-mid);
  border: 1px solid var(--gp-border);
  border-radius: 10px;
}

.md-search__form:hover {
  border-color: var(--gp-border-strong);
}

.md-search__input {
  color: var(--gp-text);
}

.md-search__input::placeholder {
  color: var(--gp-text-muted);
}

[data-md-toggle="search"]:checked ~ .md-header .md-search__form {
  border-color: var(--gp-gold-dark);
  box-shadow: 0 0 20px rgba(212, 168, 67, 0.1);
}

.md-search-result__article {
  border-bottom: 1px solid var(--gp-border);
}

.md-search-result__more summary {
  color: var(--gp-gold);
}

.md-search-result__more summary:hover {
  color: var(--gp-gold-light);
}

.md-search-result__teaser {
  color: var(--gp-text-muted);
}

/* ── Blog Cards (Grid) ── */
.md-typeset .grid.cards.blog > ul > li {
  padding: 24px 20px;
}

.md-typeset .grid.cards.blog > ul > li .blog-date {
  font-size: 0.8rem;
  color: var(--gp-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.md-typeset .grid.cards.blog > ul > li > p:first-child {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

/* ── Math / Arithmatex ── */
.md-typeset .MathJax, .md-typeset .MathJax_CHTML {
  color: var(--gp-gold-light);
}

.md-typeset .MathJax * {
  color: inherit;
}

/* ── Dividers ── */
.md-typeset hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gp-gold-dark), var(--gp-gold), var(--gp-gold-dark), transparent);
  margin: 2em 0;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gp-navy);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--gp-gold-dark), var(--gp-gold));
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gp-gold);
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--gp-gold-dark) var(--gp-navy);
}

/* ── Selection ── */
::selection {
  background: rgba(212, 168, 67, 0.3);
  color: var(--gp-gold-light);
}

/* ── Animated Decorations ── */

/* Subtle amber glow on the page */
.md-main__inner:hover .md-content {
  --gp-aura-glow: rgba(212, 168, 67, 0.02);
}

/* ── Image Styling ── */
.md-typeset img {
  border-radius: 10px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.md-typeset img:hover {
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.45), 0 0 30px rgba(212, 168, 67, 0.06);
}

.md-typeset img[align] {
  border-radius: 8px;
}

/* ── Blockquote ── */
.md-typeset blockquote {
  border-left: 3px solid var(--gp-gold-dark);
  color: var(--gp-text-muted);
  padding: 8px 20px;
  margin: 16px 0;
  background: rgba(212, 168, 67, 0.03);
  border-radius: 0 8px 8px 0;
  font-style: italic;
}

.md-typeset blockquote strong {
  color: var(--gp-text);
}

/* ── Button styling for any .md-button ── */
.md-typeset .md-button {
  border-radius: 8px;
  padding: 10px 24px;
  font-weight: 500;
  font-size: 0.85rem;
  transition: all 0.3s ease;
  border: 1px solid var(--gp-border-strong);
}

.md-typeset .md-button--primary {
  background: var(--gp-gradient);
  color: var(--gp-navy) !important;
  border: none;
  font-weight: 600;
}

.md-typeset .md-button--primary:hover {
  box-shadow: 0 6px 24px var(--gp-gold-glow);
  transform: translateY(-2px);
  color: var(--gp-navy) !important;
}

.md-typeset .md-button:not(.md-button--primary) {
  background: transparent;
  color: var(--gp-gold) !important;
}

.md-typeset .md-button:not(.md-button--primary):hover {
  background: rgba(212, 168, 67, 0.1);
  border-color: var(--gp-gold);
  color: var(--gp-gold-light) !important;
}

/* ── Definiton Lists ── */
.md-typeset dl dt {
  color: var(--gp-gold-light);
  font-weight: 600;
}

.md-typeset dl dd {
  color: var(--gp-text);
  margin-bottom: 12px;
}

/* ── Foot Notes ── */
.md-typeset .footnote {
  color: var(--gp-text-muted);
  font-size: 0.85rem;
}

.md-typeset .footnote-ref {
  color: var(--gp-gold);
}

.md-typeset .footnote-ref:hover {
  color: var(--gp-gold-light);
}

/* ── Highlight / Mark ── */
.md-typeset mark {
  background: rgba(212, 168, 67, 0.2);
  color: var(--gp-gold-light);
  padding: 1px 4px;
  border-radius: 3px;
}

/* ── Progress Bars (pymdownx.progress) ── */
.md-typeset .progress-label {
  color: var(--gp-text-muted);
}

.md-typeset .progress-bar {
  background: var(--gp-navy-mid);
  border: 1px solid var(--gp-border);
  border-radius: 10px;
  overflow: hidden;
}

.md-typeset .progress-bar .progress {
  background: var(--gp-gradient);
  border-radius: 10px;
}

/* ── GISCUS Comments compat ── */
.giscus, .giscus-frame {
  width: 100%;
  margin: 40px 0;
}

/* ── Keys styling ── */
.md-typeset .keys kbd {
  background: linear-gradient(145deg, rgba(15, 29, 53, 0.8), rgba(10, 22, 40, 0.9));
  border: 1px solid var(--gp-border-strong);
  border-radius: 6px;
  padding: 3px 8px;
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.3);
  color: var(--gp-text);
}

/* ── Animated Entry for Cards ── */
.md-typeset .grid.cards > ul > li {
  animation: cardFadeIn 0.6s ease-out both;
}

.md-typeset .grid.cards > ul > li:nth-child(1) { animation-delay: 0.05s; }
.md-typeset .grid.cards > ul > li:nth-child(2) { animation-delay: 0.1s; }
.md-typeset .grid.cards > ul > li:nth-child(3) { animation-delay: 0.15s; }
.md-typeset .grid.cards > ul > li:nth-child(4) { animation-delay: 0.2s; }
.md-typeset .grid.cards > ul > li:nth-child(5) { animation-delay: 0.25s; }
.md-typeset .grid.cards > ul > li:nth-child(6) { animation-delay: 0.3s; }
.md-typeset .grid.cards > ul > li:nth-child(7) { animation-delay: 0.35s; }
.md-typeset .grid.cards > ul > li:nth-child(8) { animation-delay: 0.4s; }
.md-typeset .grid.cards > ul > li:nth-child(9) { animation-delay: 0.45s; }
.md-typeset .grid.cards > ul > li:nth-child(10) { animation-delay: 0.5s; }

@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Responsive Adjustments ── */
@media screen and (max-width: 76.2344em) {
  .md-header__topic {
    font-size: 0.95rem;
  }

  .md-typeset .gp-hero h1 {
    font-size: 2rem;
  }

  .md-typeset .gp-hero .gp-hero-formula {
    font-size: 1.6rem;
  }

  .md-typeset .gp-hero .gp-hero-subtitle {
    font-size: 1rem;
  }

  .grid.cards {
    grid-template-columns: 1fr;
  }

  .md-typeset .gp-quick-links ul li a {
    font-size: 0.8rem;
    padding: 8px 16px;
  }
}

@media screen and (max-width: 60em) {
  .md-typeset .gp-hero {
    padding: 30px 16px 20px;
  }

  .md-typeset .gp-hero h1 {
    font-size: 1.6rem;
  }

  .md-typeset .gp-hero .gp-hero-formula {
    font-size: 1.3rem;
  }
}

/* ──────────────────────────────────────────────
   Gallery Page Styles
   ────────────────────────────────────────────── */

.gp-gallery-intro {
  text-align: center;
  margin-bottom: 24px;
  font-size: 1.05rem;
  color: var(--gp-text);
  line-height: 1.7;
}

.gp-gallery-intro strong {
  color: var(--gp-gold-light);
}

.gp-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin: 32px 0;
}

.gp-gallery-item {
  background: linear-gradient(145deg, rgba(15, 29, 53, 0.6), rgba(10, 22, 40, 0.8));
  border: 1px solid var(--gp-border);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  animation: cardFadeIn 0.6s ease-out both;
  display: flex;
  flex-direction: column;
}

.gp-gallery-item:nth-child(1)  { animation-delay: 0.02s; }
.gp-gallery-item:nth-child(2)  { animation-delay: 0.04s; }
.gp-gallery-item:nth-child(3)  { animation-delay: 0.06s; }
.gp-gallery-item:nth-child(4)  { animation-delay: 0.08s; }
.gp-gallery-item:nth-child(5)  { animation-delay: 0.10s; }
.gp-gallery-item:nth-child(6)  { animation-delay: 0.12s; }
.gp-gallery-item:nth-child(7)  { animation-delay: 0.14s; }
.gp-gallery-item:nth-child(8)  { animation-delay: 0.16s; }
.gp-gallery-item:nth-child(9)  { animation-delay: 0.18s; }
.gp-gallery-item:nth-child(10) { animation-delay: 0.20s; }
.gp-gallery-item:nth-child(11) { animation-delay: 0.22s; }
.gp-gallery-item:nth-child(12) { animation-delay: 0.24s; }
.gp-gallery-item:nth-child(13) { animation-delay: 0.26s; }
.gp-gallery-item:nth-child(14) { animation-delay: 0.28s; }
.gp-gallery-item:nth-child(15) { animation-delay: 0.30s; }

.gp-gallery-item:hover {
  transform: translateY(-6px);
  border-color: var(--gp-border-strong);
  box-shadow:
    0 16px 48px rgba(0, 0, 0, 0.45),
    0 0 40px rgba(212, 168, 67, 0.08);
}

.gp-gallery-item p {
  margin: 0;
}

.gp-gallery-item p:first-child {
  line-height: 0;
}

.gp-gallery-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 14px 14px 0 0;
  box-shadow: none;
  transition: transform 0.5s ease, filter 0.5s ease;
  display: block;
}

.gp-gallery-item:hover img {
  transform: scale(1.04);
  filter: brightness(1.1);
}

.gp-gallery-item p:last-child {
  padding: 14px 16px 16px;
  font-size: 0.82rem;
  color: var(--gp-text-muted);
  line-height: 1.5;
  flex: 1;
}

.gp-gallery-item p:last-child strong {
  color: var(--gp-gold-light);
  font-size: 0.85rem;
  display: block;
  margin-bottom: 4px;
}

/* Gallery footer */
.gp-gallery-footer {
  text-align: center;
  font-size: 0.9rem;
  color: var(--gp-text-muted);
  margin-top: 32px;
}

.gp-gallery-footer a {
  color: var(--gp-gold);
  transition: color 0.2s ease;
}

.gp-gallery-footer a:hover {
  color: var(--gp-gold-light);
}

/* Gallery responsive */
@media screen and (max-width: 76.2344em) {
  .gp-gallery {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
  }
}

@media screen and (max-width: 60em) {
  .gp-gallery {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }

  .gp-gallery-item img {
    height: 180px;
  }
}

@media screen and (max-width: 40em) {
  .gp-gallery {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .gp-gallery-item img {
    height: 150px;
  }

  .gp-gallery-item p:last-child {
    font-size: 0.75rem;
    padding: 10px 12px 12px;
  }
}

/* ── Print styles ── */
@media print {
  .md-header,
  .md-tabs,
  .md-sidebar,
  .md-footer,
  .md-top {
    display: none !important;
  }

  .md-content__inner::before {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .gp-gallery {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .gp-gallery-item {
    break-inside: avoid;
    page-break-inside: avoid;
  }
}