/* ══════════════════════════════════════════════════════════════
   FAMAIL — Custom Theme for MkDocs Material
   Color palette drawn from project presentations
   ══════════════════════════════════════════════════════════════ */

/* ── Color Scheme Definition ─────────────────────────────────── */
[data-md-color-scheme="famail"] {
  --md-primary-fg-color:        #A6192E;
  --md-primary-fg-color--light: #c4394e;
  --md-primary-fg-color--dark:  #8a1526;
  --md-accent-fg-color:         #008080;
  --md-accent-fg-color--transparent: rgba(0, 128, 128, 0.1);

  --md-default-fg-color:                 #2D2828;
  --md-default-fg-color--light:          #5a5555;
  --md-default-fg-color--lighter:        #8a8585;
  --md-default-fg-color--lightest:       #CDCDC8;

  --md-default-bg-color:                 #FFFFFF;
  --md-default-bg-color--light:          #f8f8f7;
  --md-default-bg-color--lighter:        #fafafa;
  --md-default-bg-color--lightest:       #f5f5f4;

  --md-typeset-color:           #2D2828;
  --md-typeset-a-color:         #008080;

  --md-code-bg-color:           #f8f7f6;
  --md-code-fg-color:           #2D2828;

  /* Footer */
  --md-footer-bg-color:         #2D2828;
  --md-footer-bg-color--dark:   #1a1717;
  --md-footer-fg-color:         #CDCDC8;
  --md-footer-fg-color--light:  #e0e0dc;
  --md-footer-fg-color--lighter:#9e9e99;
}

/* ── Layout Grid — left-aligned, wider ─────────────────────────
/* Override Material's centred 61 rem grid so content hugs the left
   edge. The search-box right side automatically aligns with the
   content right side because both live inside .md-grid containers. */
.md-grid {
  max-width: 65rem;          
  margin-left: 2.5rem;       
  margin-right: 2.0rem;
  margin-right: auto;        
} */

/* Centre the header and tab grids so logo/search span full width */
.md-header .md-grid,
.md-tabs .md-grid {
  margin-left: auto;
  margin-right: auto;
}

/* ── Search Box Fix ──────────────────────────────────────────── */
/* Ensure search box stays visible and functional on hover */
.md-search {
  pointer-events: auto !important;
  visibility: visible !important;
  right: 3.0rem;
}

/* .md-search__form,
.md-search__input,
.md-search__icon {
  pointer-events: auto !important;
  visibility: visible !important;
}

.md-search:hover,
.md-search__form:hover,
.md-search__input:hover {
  opacity: 1 !important;
  visibility: visible !important;
  display: block !important;
} */

/* ── Header ──────────────────────────────────────────────────── */
.md-header {
  background: var(--md-default-bg-color);
  border-bottom: 3px solid var(--md-primary-fg-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  color: var(--md-typeset-color)
}

/* Header logo size control */
.md-header .md-logo img {
  width: 5.0rem;           /* Adjust this value to resize logo */
  height: 2.3rem;          /* Keep width and height equal for square logos */
  display: block;
}

/* University logo in upper-right corner */
.university-logo {
  position: absolute;
  top: 1.7rem;
  /* top: 50%; */
  right: 0.9rem;
  /* right: 1rem; */
  transform: translateY(-50%);
  z-index: 10;
  /* z-index: 3; */
  display: flex;
  align-items: center;
}

.university-logo img {
  height: 1.4rem;          /* Adjust height to match desired size */
  width: auto;             /* Maintain aspect ratio */
  display: block;
}

.md-header[data-md-state="shadow"] {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
}

.md-header__title {
  color: var(--md-primary-fg-color);
  font-weight: 700;
}

.md-header__topic {
  color: var(--md-primary-fg-color);
  font-weight: 700;
}

.md-header__topic + .md-header__topic {
  color: var(--md-default-fg-color--light);
}

/* Header nav tabs */
.md-tabs {
  background: var(--md-default-bg-color);
  border-bottom: 1px solid #e8e8e5;
}

.md-tabs__link {
  color: var(--md-default-fg-color--light);
  font-weight: 500;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

.md-tabs__link--active,
.md-tabs__item--active > .md-tabs__link,
.md-tabs__link:hover {
  color: var(--md-primary-fg-color) !important;
}

/* ── Navigation Sidebar ──────────────────────────────────────── */
.md-nav__link {
  color: var(--md-default-fg-color--light);
  font-size: 0.88rem;
}

.md-nav__link--active,
.md-nav__item--active > .md-nav__link {
  color: var(--md-primary-fg-color);
  font-weight: 600;
}

.md-nav__link:hover {
  color: var(--md-accent-fg-color);
}

/* ── Typography ──────────────────────────────────────────────── */
.md-typeset h1 {
  color: var(--md-primary-fg-color);
  font-weight: 700;
  font-size: 2rem;
  border-bottom: 2px solid var(--md-primary-fg-color);
  padding-bottom: 0.4rem;
  margin-bottom: 1.2rem;
}

.md-typeset h2 {
  color: var(--md-primary-fg-color);
  font-weight: 600;
  font-size: 1.5rem;
  margin-top: 2rem;
}

.md-typeset h3 {
  color: var(--md-accent-fg-color);
  font-weight: 600;
  font-size: 1.2rem;
  margin-top: 1.5rem;
}

.md-typeset h4 {
  color: var(--md-default-fg-color);
  font-weight: 600;
  font-size: 1.05rem;
}

/* Body text */
.md-typeset {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--md-default-fg-color);
}

/* ── Tables (presentation-style) ─────────────────────────────── */
.md-typeset table:not([class]) {
  border: none;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  border-radius: 6px;
  overflow: hidden;
  font-size: 0.88rem;
}

.md-typeset table:not([class]) th {
  background: var(--md-primary-fg-color);
  color: #FFFFFF;
  font-weight: 600;
  padding: 0.7rem 1rem;
  min-width: auto;
}

.md-typeset table:not([class]) td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid #eae9e6;
}

.md-typeset table:not([class]) tr:nth-child(even) td {
  background: #fafaf9;
}

.md-typeset table:not([class]) tr:hover td {
  background: rgba(0, 128, 128, 0.04);
}

/* ── Admonitions (info boxes, teal accent like the presentation) ── */
.md-typeset .admonition,
.md-typeset details {
  border-left: 4px solid var(--md-accent-fg-color);
  border-radius: 4px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  font-size: 0.9rem;
}

.md-typeset .admonition.info,
.md-typeset details.info {
  border-left-color: var(--md-accent-fg-color);
}

.md-typeset .admonition.info > .admonition-title,
.md-typeset details.info > summary {
  background-color: rgba(0, 128, 128, 0.08);
}

.md-typeset .admonition.question > .admonition-title,
.md-typeset details.question > summary {
  background-color: rgba(0, 128, 128, 0.08);
}

.md-typeset .admonition.question,
.md-typeset details.question {
  border-left-color: var(--md-accent-fg-color);
}

.md-typeset .admonition.abstract,
.md-typeset details.abstract {
  border-left-color: var(--md-primary-fg-color);
}

.md-typeset .admonition.abstract > .admonition-title,
.md-typeset details.abstract > summary {
  background-color: rgba(166, 25, 46, 0.06);
  color: var(--md-primary-fg-color);
}

/* ── Code blocks ─────────────────────────────────────────────── */
.md-typeset code {
  background: #f4f3f1;
  color: var(--md-accent-fg-color);
  font-size: 0.85em;
  padding: 0.1em 0.4em;
  border-radius: 3px;
}

.md-typeset pre > code {
  color: var(--md-default-fg-color);
}

.md-typeset pre {
  border: 1px solid #e8e8e5;
  border-radius: 6px;
  background: #fafaf9;
}

/* ── Links ───────────────────────────────────────────────────── */
.md-typeset a {
  color: var(--md-accent-fg-color);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-bottom-color 0.15s;
}

.md-typeset a:hover {
  border-bottom-color: var(--md-accent-fg-color);
}

/* ── Footer ──────────────────────────────────────────────────── */
.md-footer {
  background: var(--md-footer-bg-color);
}

.md-footer-meta {
  background: var(--md-footer-bg-color--dark);
}

/* Footer prev/next navigation */
.md-footer__link {
  color: var(--md-footer-fg-color--light);
}

.md-footer__title {
  color: var(--md-footer-fg-color);
}

.md-footer__direction {
  color: var(--md-footer-fg-color--lighter);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Hero Section (home page) ────────────────────────────────── */
.hero {
  text-align: center;
  padding: 3rem 2rem 2.5rem;
  margin: -0.6rem -0.6rem 2rem;
  background: linear-gradient(
    160deg,
    #fafaf9 0%,
    #f5f5f4 40%,
    rgba(0, 128, 128, 0.03) 100%
  );
  border: 3px solid var(--md-primary-fg-color);
  /* border-bottom: 3px solid var(--md-primary-fg-color); */
  border-radius: 8px;
  /* border-radius: 0 0 8px 8px; */
}

.hero h1 {
  color: var(--md-primary-fg-color) !important;
  font-size: 2.4rem !important;
  font-weight: 700;
  margin-bottom: 0.3rem !important;
  border: none !important;
  padding-bottom: 0 !important;
}

.hero .tagline {
  color: var(--md-default-fg-color--light);
  font-size: 1.15rem;
  font-style: italic;
  margin-bottom: 1.5rem;
  font-weight: 400;
}

.hero .affiliation {
  color: var(--md-default-fg-color--lighter);
  font-size: 0.9rem;
  margin-top: 1rem;
  letter-spacing: 0.02em;
}

.hero .summary {
  max-width: 780px;
  margin: 0 auto 1.5rem;
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--md-default-fg-color);
  text-align: left;
}

/* ── Feature Cards (home page) ───────────────────────────────── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.feature-card {
  background: #FFFFFF;
  border: 1px solid #e8e8e5;
  border-left: 4px solid var(--md-accent-fg-color);
  border-radius: 6px;
  padding: 1.4rem 1.5rem;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
  transition: box-shadow 0.2s, transform 0.2s;
}

.feature-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.feature-card .card-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.feature-card h3 {
  color: var(--md-default-fg-color) !important;
  font-size: 1.05rem !important;
  font-weight: 600;
  margin: 0 0 0.5rem !important;
}

.feature-card p {
  color: var(--md-default-fg-color--light);
  font-size: 0.88rem;
  line-height: 1.6;
  margin: 0;
}

.feature-card a {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--md-accent-fg-color);
}

/* ── Pipeline Diagram (home page) ────────────────────────────── */
.pipeline {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0;
  margin: 2rem 0;
  flex-wrap: wrap;
}

.pipeline-step {
  flex: 1;
  min-width: 200px;
  max-width: 280px;
  background: #FFFFFF;
  border: 1px solid #e8e8e5;
  border-radius: 6px;
  padding: 1.2rem 1.3rem;
  text-align: center;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
  position: relative;
}

.pipeline-step .step-number {
  display: inline-block;
  width: 28px;
  height: 28px;
  line-height: 28px;
  border-radius: 50%;
  background: var(--md-primary-fg-color);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 0.6rem;
}

.pipeline-step h4 {
  color: var(--md-default-fg-color) !important;
  font-size: 0.95rem;
  margin: 0 0 0.4rem !important;
}

.pipeline-step p {
  font-size: 0.83rem;
  color: var(--md-default-fg-color--light);
  margin: 0;
  line-height: 1.5;
}

.pipeline-arrow {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  color: var(--md-primary-fg-color);
  padding: 0 0.6rem;
  font-weight: 700;
}

@media (max-width: 820px) {
  .pipeline {
    flex-direction: column;
    align-items: center;
  }
  .pipeline-arrow {
    transform: rotate(90deg);
    padding: 0.4rem 0;
  }
  .pipeline-step {
    max-width: 100%;
  }
}

/* ── Equation Highlight Box ──────────────────────────────────── */
.equation-box {
  background: #fafaf9;
  border: 1px solid #e8e8e5;
  border-left: 4px solid var(--md-accent-fg-color);
  border-radius: 6px;
  padding: 1.2rem 1.5rem;
  margin: 1.5rem 0;
  text-align: center;
}

/* ── Algorithm Box ───────────────────────────────────────────── */
.algorithm-box {
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 0.85rem;
  background: #fafaf9;
  border: 1px solid #e0e0dc;
  border-radius: 6px;
  padding: 1.5rem 2rem;
  line-height: 1.9;
  color: var(--md-default-fg-color);
  white-space: pre-wrap;
  margin: 1.5rem 0;
  overflow-x: auto;
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 76.25em) {
  .hero h1 {
    font-size: 1.8rem !important;
  }
  .hero .tagline {
    font-size: 1rem;
  }
}
/* ── KaTeX MathML Accessibility Layer (must be hidden) ────────── */
/* KaTeX renders a .katex-mathml element for screen readers that
   should be visually hidden. If KaTeX CSS doesn't load or loses
   a specificity battle, this defensive rule ensures it stays hidden. */
.katex-mathml {
  position: absolute !important;
  clip: rect(1px, 1px, 1px, 1px) !important;
  padding: 0 !important;
  border: 0 !important;
  height: 1px !important;
  width: 1px !important;
  overflow: hidden !important;
}
/* ── Print ───────────────────────────────────────────────────── */
@media print {
  .hero {
    border-bottom: 2px solid #A6192E;
    background: none;
  }
}