/* ==========================================================================
   BPP Hub & Material Fresh Theme Override (Safe Layout Version)
   ========================================================================== */

:root {
  /* BPP colour reference */
  --bpp-dark-text: #3C3C3B;
  --bpp-purple: #6E368A;
  --bpp-academic-blue: #3763AD;
  --bpp-teal-green: #64BDB6;
  --bpp-warm-amber: #F9B149;
  --bpp-muted-text: #7A7A7A;
  --bpp-light-bg: #F9F7F7;
  --bpp-page-bg: #EFEFEF;
  --bpp-border: #E2E8F0;
}

/* ---- Header bar ---- */
.md-header {
  background-color: #3C3C3B;
}

/* ---- Make logo visible on dark header ---- */
.md-header .md-logo img,
.md-header .md-logo svg {
  filter: brightness(0) invert(1);
}

/* ---- Tab navigation bar (the purple topic bar) ---- */
.md-tabs {
  background-color: #6E368A;
}

.md-tabs__link {
  color: rgba(255, 255, 255, 0.7);
}

.md-tabs__link--active,
.md-tabs__link:hover {
  color: #FFFFFF;
}

/* ---- Left sidebar text styling ONLY ---- */
.md-sidebar--primary .md-nav__link {
  color: #3C3C3B;
}

.md-sidebar--primary .md-nav__link:hover {
  color: #6E368A;
}

.md-sidebar--primary .md-nav__item--active > .md-nav__link {
  color: #6E368A;
  font-weight: 600;
}

/* ---- Right TOC text styling ONLY ---- */
.md-sidebar--secondary .md-nav__link {
  color: #7A7A7A;
  font-size: 0.8rem;
}

.md-sidebar--secondary .md-nav__link--active {
  color: #6E368A;
  font-weight: 600;
}

/* ---- Main content typography ---- */
.md-typeset h1 {
  color: #3C3C3B;
}

.md-typeset h2,
.md-typeset h3 {
  color: #6E368A;
}

.md-typeset blockquote {
  border-left: 3px solid #6E368A;
  color: #7A7A7A;
}

/* ---- Table header ---- */
.md-typeset table:not([class]) th {
  background-color: #6E368A;
  color: #FFFFFF;
}

/* ---- Search bar ---- */
.md-search__input {
  background-color: rgba(255, 255, 255, 0.12);
}

.md-search__input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

/* ==========================================================================
   CARDS, CALLOUTS, AND REMAINING COSMETICS (No Layout Overrides)
   ========================================================================== */

/* Arrow Pattern for cards */
.md-typeset .grid.cards > ul > li {
  background-color: #FFFFFF;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  border: none;
  padding: 1.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.md-typeset .grid.cards > ul > li > a {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: inherit;
}

.md-typeset .grid.cards > ul > li h3 {
  color: #6B6B6B;
  font-size: 1.25rem;
  margin-top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.md-typeset .grid.cards > ul > li > a h3::after {
  content: " →";
  font-family: system-ui;
  margin-left: auto;
  color: var(--bpp-purple);
  transition: transform 0.2s;
}

.md-typeset .grid.cards > ul > li:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.md-typeset .grid.cards > ul > li:hover > a h3::after {
  transform: translateX(4px);
}

.md-typeset .grid.cards > ul > li:nth-child(4n+1) {
  border-top: 4px solid var(--bpp-purple);
}

.md-typeset .grid.cards > ul > li:nth-child(4n+2) {
  border-top: 4px solid var(--bpp-teal-green);
}

.md-typeset .grid.cards > ul > li:nth-child(4n+3) {
  border-top: 4px solid var(--bpp-warm-amber);
}

.md-typeset .grid.cards > ul > li:nth-child(4n+4) {
  border-top: 4px solid var(--bpp-academic-blue);
}

/* Callout Bars (Admonitions) */
.md-typeset .admonition,
.md-typeset details {
  background-color: #FFFFFF;
  border-radius: 0 8px 8px 0;
  border-left: 4px solid var(--bpp-purple);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.md-typeset .admonition-title,
.md-typeset summary {
  background-color: rgba(110, 54, 138, 0.05);
  color: var(--bpp-purple);
  font-weight: 700;
}

.md-typeset .admonition.tip {
  border-left-color: var(--bpp-teal-green);
}

.md-typeset .admonition.tip .admonition-title {
  color: var(--bpp-teal-green);
  background-color: rgba(100, 189, 182, 0.05);
}

.md-typeset .admonition.warning {
  border-left-color: var(--bpp-warm-amber);
}

.md-typeset .admonition.warning .admonition-title {
  color: #d69e00;
  background-color: rgba(249, 177, 73, 0.05);
}

.md-typeset .admonition.danger,
.md-typeset .admonition.caution {
  border-left-color: #D32F2F;
}

.md-typeset .admonition.danger .admonition-title {
  color: #D32F2F;
  background-color: rgba(211, 47, 47, 0.05);
}

/* Tables alternating rows */
.md-typeset table:not([class]) td {
  border-top: 1px solid #EFEFEF;
  border-bottom: none;
}

.md-typeset table:not([class]) tr:nth-child(even) td {
  background-color: var(--bpp-light-bg);
}

/* Button Styling */
.md-typeset .md-button--primary {
  background-color: var(--bpp-purple);
  border-radius: 4px;
}

.md-typeset .md-button--primary:hover {
  background-color: var(--bpp-dark-text);
}

/* ==========================================================================
   CODE BLOCK STYLING (SAFE)
   ========================================================================== */

/* ---- Code blocks ---- */
.md-typeset pre {
  background-color: #F8F8F8;
  border: 1px solid #E2E8F0;
  border-radius: 6px;
}

.md-typeset code {
  font-size: 0.85em;
}

/* ---- Inline code ---- */
.md-typeset :not(pre) > code {
  background-color: #F3EDF6;
  color: #6E368A;
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

/* ---- Code block copy button ---- */
.md-clipboard {
  color: #7A7A7A;
}

/* ---- Code block scrolling (SAFE — only affects the inner scroll, not layout) ---- */
.md-typeset pre > code {
  overflow-x: auto;
}