/* ============================================================
   Centre for Educational Technology — Lab Notebook Theme
   A technical, tool-first design with blueprint aesthetics
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Mono:ital,wght@0,400;0,700;1,400&family=Instrument+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

/* --- Palette ------------------------------------------------ */
:root,
[data-md-color-scheme="default"] {
  --md-primary-fg-color: #0c1222;
  --md-primary-fg-color--light: #1a2540;
  --md-primary-fg-color--dark: #060a14;
  --md-primary-bg-color: #f0f0ec;
  --md-accent-fg-color: #0d9373;
  --md-accent-fg-color--transparent: #0d93731a;
  --md-default-bg-color: #f5f5f0;
  --md-default-fg-color: #1a1e28;
  --md-default-fg-color--light: #4a5060;
  --md-default-fg-color--lighter: #7a8090;
  --md-typeset-color: #2a2e38;
  --md-code-bg-color: #0c1222;
  --md-code-fg-color: #a8e6cf;

  --lab-teal: #0d9373;
  --lab-teal-dim: #0d937340;
  --lab-navy: #0c1222;
  --lab-navy-mid: #152038;
  --lab-slate: #e8e8e2;
  --lab-paper: #f5f5f0;
  --lab-ink: #1a1e28;
  --lab-muted: #6a7080;
  --lab-border: #d0d0c8;
  --lab-grid: #c8c8c0;
  --lab-red: #d14b4b;
  --lab-amber: #c89020;
}

/* --- Typography --------------------------------------------- */
body,
.md-typeset {
  font-family: 'Instrument Sans', system-ui, sans-serif;
  font-size: 0.9rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4 {
  font-family: 'Space Mono', monospace;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--lab-navy);
}

.md-typeset h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin-bottom: 0.5em;
}

.md-typeset h2 {
  font-size: 1.3rem;
  margin-top: 2.4em;
  padding-bottom: 0.4em;
  border-bottom: 2px solid var(--lab-navy);
}

.md-typeset h3 {
  font-size: 1rem;
  color: var(--lab-teal);
  letter-spacing: 0;
}

.md-typeset code,
.md-typeset pre code {
  font-family: 'Space Mono', monospace;
  font-size: 0.8em;
}

.md-typeset pre {
  border: 1px solid var(--lab-border);
  border-radius: 0;
}

/* --- Hide logo & TOC sidebar -------------------------------- */
.md-header__button.md-logo {
  display: none;
}

.md-sidebar--secondary {
  display: none;
}

/* --- Header ------------------------------------------------- */
.md-header {
  background: var(--lab-navy);
  box-shadow: none;
}

.md-header__title {
  font-family: 'Space Mono', monospace;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: -0.02em;
}

.md-tabs {
  background: var(--lab-navy-mid);
}

.md-tabs__link {
  font-family: 'Space Mono', monospace;
  font-weight: 400;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.5;
  transition: opacity 0.15s;
}

.md-tabs__link:hover,
.md-tabs__link--active {
  opacity: 1;
}

/* --- Hero (home page) --------------------------------------- */
.lab-hero {
  background: var(--lab-navy);
  margin: -1.2rem -1.2rem 2.5rem;
  padding: 4rem 2rem 3.5rem;
  position: relative;
  overflow: hidden;
}

/* blueprint grid */
.lab-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(13,147,115,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13,147,115,0.07) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

/* corner markers */
.lab-hero::after {
  content: '';
  position: absolute;
  top: 24px;
  left: 24px;
  width: 40px;
  height: 40px;
  border-top: 2px solid var(--lab-teal);
  border-left: 2px solid var(--lab-teal);
  opacity: 0.4;
  pointer-events: none;
}

.lab-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.lab-hero-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--lab-teal);
  margin-bottom: 1.5rem;
  display: inline-block;
  padding: 0.3em 0.7em;
  border: 1px solid var(--lab-teal-dim);
}

.lab-hero h1 {
  font-family: 'Space Mono', monospace;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--lab-paper);
  line-height: 1.2;
  margin: 0 0 1.2rem;
  letter-spacing: -0.03em;
}

.lab-hero h1 em {
  color: var(--lab-teal);
  font-style: normal;
}

.lab-hero-desc {
  font-family: 'Instrument Sans', sans-serif;
  font-size: 1.05rem;
  color: rgba(245,245,240,0.55);
  line-height: 1.7;
  max-width: 560px;
}

/* --- Tool Cards --------------------------------------------- */
.lab-tools-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 2rem 0;
  border: 1px solid var(--lab-border);
}

.lab-tool {
  display: grid;
  grid-template-columns: 200px 1fr;
  border-bottom: 1px solid var(--lab-border);
  transition: background 0.15s;
}

.lab-tool:last-child {
  border-bottom: none;
}

.lab-tool:hover {
  background: rgba(13,147,115,0.03);
}

.lab-tool-meta {
  padding: 1.6rem;
  background: rgba(0,0,0,0.015);
  border-right: 1px solid var(--lab-border);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.lab-tool-meta p {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
}

.lab-tool-body {
  padding: 1.6rem 2rem;
}

.lab-tool-body h3 {
  font-family: 'Space Mono', monospace;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--lab-ink);
  margin: 0 0 0.5rem;
  padding: 0;
  border: none;
}

.lab-tool-body p {
  font-size: 0.88rem;
  color: var(--lab-muted);
  margin: 0 0 0.8rem;
  line-height: 1.6;
}

.lab-badge {
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.04em;
  padding: 0.2em 0.55em;
  display: inline-block;
  width: fit-content;
}

.lab-badge--status {
  border: 1px solid var(--lab-teal);
  color: var(--lab-teal);
}

.lab-badge--stack {
  border: 1px solid var(--lab-border);
  color: var(--lab-muted);
}

.lab-badge--domain {
  border: 1px solid var(--lab-amber);
  color: var(--lab-amber);
}

.lab-tool-link {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--lab-teal);
  text-decoration: none;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: gap 0.15s;
}

.lab-tool-link:hover {
  gap: 0.6rem;
}

.lab-tool-link::after {
  content: '→';
}

/* --- Tool Detail Page --------------------------------------- */
.lab-detail-header {
  background: var(--lab-navy);
  margin: -1.2rem -1.2rem 2.5rem;
  padding: 3rem 2rem;
  position: relative;
}

.lab-detail-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(13,147,115,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13,147,115,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.lab-detail-header > * {
  position: relative;
  z-index: 1;
}

.lab-detail-header h1 {
  font-family: 'Space Mono', monospace;
  color: var(--lab-paper);
  margin-bottom: 0.8rem;
}

.lab-detail-badges {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.lab-detail-badges .lab-badge {
  background: transparent;
}

.lab-detail-badges .lab-badge--status {
  border-color: var(--lab-teal);
  color: var(--lab-teal);
}

.lab-detail-badges .lab-badge--stack {
  border-color: rgba(245,245,240,0.2);
  color: rgba(245,245,240,0.5);
}

.lab-detail-desc {
  font-family: 'Instrument Sans', sans-serif;
  font-size: 1rem;
  color: rgba(245,245,240,0.55);
  max-width: 600px;
  line-height: 1.65;
}

.lab-detail-link,
.lab-detail-link:link,
.lab-detail-link:visited {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  font-weight: 700;
  color: rgba(245,245,240,0.85) !important;
  text-decoration: none;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  padding: 0.4em 0.8em;
  border: 1px solid rgba(245,245,240,0.2);
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.lab-detail-link:hover {
  border-color: var(--lab-teal);
  background: rgba(13,147,115,0.1);
  color: var(--lab-teal) !important;
}

.lab-detail-link::before {
  content: '↗';
}

/* --- Spec Table --------------------------------------------- */
.lab-specs {
  border: 1px solid var(--lab-border);
  margin: 2rem 0;
}

.lab-spec-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  border-bottom: 1px solid var(--lab-border);
}

.lab-spec-row:last-child {
  border-bottom: none;
}

.lab-spec-key {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--lab-muted);
  padding: 0.9rem 1.2rem;
  background: rgba(0,0,0,0.015);
  border-right: 1px solid var(--lab-border);
}

.lab-spec-val {
  font-size: 0.88rem;
  color: var(--lab-ink);
  padding: 0.9rem 1.2rem;
}

/* --- Section Divider ---------------------------------------- */
.lab-section-num {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--lab-teal);
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 0.2rem;
}

/* --- Approach Blocks ---------------------------------------- */
.lab-approach {
  padding: 1.8rem 0;
  border-bottom: 1px solid var(--lab-border);
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 1rem;
  align-items: start;
}

.lab-approach:last-child {
  border-bottom: none;
}

.lab-approach-id {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--lab-paper);
  background: var(--lab-navy);
  padding: 0.35em 0.6em;
  text-align: center;
  letter-spacing: 0.06em;
  margin-top: 0.15rem;
}

.lab-approach-body h3 {
  font-family: 'Space Mono', monospace;
  font-size: 0.95rem;
  color: var(--lab-ink);
  margin: 0 0 0.4rem;
  padding: 0;
  border: none;
}

.lab-approach-body p {
  font-size: 0.88rem;
  color: var(--lab-muted);
  line-height: 1.6;
  margin: 0;
}

/* --- Publications ------------------------------------------- */
.lab-pub {
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--lab-border);
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 1rem;
}

.lab-pub:last-child {
  border-bottom: none;
}

.lab-pub-year {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--lab-teal);
  padding-top: 0.15rem;
}

.lab-pub-info .lab-pub-title {
  font-family: 'Space Mono', monospace;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--lab-ink);
  display: block;
  line-height: 1.4;
  margin-bottom: 0.25rem;
}

.lab-pub-info .lab-pub-authors {
  font-size: 0.82rem;
  color: var(--lab-muted);
  font-style: italic;
  display: block;
}

.lab-pub-info .lab-pub-venue {
  font-size: 0.78rem;
  color: var(--lab-muted);
  display: block;
  margin-top: 0.15rem;
}

/* --- Footer ------------------------------------------------- */
.md-footer {
  background: var(--lab-navy);
}

.md-footer-meta__inner.md-grid {
  display: flex;
}

.md-footer-meta .md-copyright {
  display: none;
}

/* --- Responsive --------------------------------------------- */
@media (max-width: 768px) {
  .lab-hero {
    padding: 2.5rem 1.2rem 2.5rem;
  }

  .lab-hero h1 {
    font-size: 1.6rem;
  }

  .lab-tool {
    grid-template-columns: 1fr;
  }

  .lab-tool-meta {
    border-right: none;
    border-bottom: 1px solid var(--lab-border);
    flex-direction: row;
    flex-wrap: wrap;
  }

  .lab-spec-row {
    grid-template-columns: 1fr;
  }

  .lab-spec-key {
    border-right: none;
    border-bottom: 1px solid var(--lab-border);
  }

  .lab-approach,
  .lab-pub {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
}