/* ── Color System ── */
:root {
  --bg-white: #ffffff;
  --bg-alt: #f8fafa;
  --bg-code: #f1f5f9;
  --text-primary: #1a1a2e;
  --text-secondary: #475569;
  --text-muted: #7c8db0;
  --accent: #0d9488;
  --accent-hover: #0f766e;
  --accent-light: #ccfbf1;
  --accent-subtle: #f0fdfa;
  --border: #e2e8f0;
}

/* ── Material Theme Overrides ── */
[data-md-color-scheme="default"] {
  --md-primary-fg-color: #0d9488;
  --md-primary-fg-color--light: #ccfbf1;
  --md-primary-fg-color--dark: #0f766e;
  --md-accent-fg-color: #0d9488;
  --md-typeset-font-size: 0.75rem;
}

/* ── Tighter headings ── */
.md-typeset h1 { font-size: 1.6rem; }
.md-typeset h2 { font-size: 1.25rem; }
.md-typeset h3 { font-size: 1.05rem; }
.md-typeset h4 { font-size: 0.95rem; }

/* ── Tighter code blocks ── */
.md-typeset code,
.md-typeset pre code {
  font-size: 0.72rem;
}
.md-typeset pre {
  line-height: 1.5;
}

/* ── API Reference: function/method name highlighting ── */
/* Function name in heading */
.md-typeset .doc.doc-heading .doc-function-name,
.md-typeset .doc.doc-heading .doc-class-name {
  color: #2563eb !important;
  font-family: var(--md-code-font-family);
}
/* Signature block: function name */
.md-typeset .doc-signature span.nf {
  color: #2563eb !important;
}
/* Signature block: parameter names — default text color */
.md-typeset .doc-signature span.n {
  color: var(--text-primary) !important;
}
/* Signature block: punctuation (parens, commas) */
.md-typeset .doc-signature span.p {
  color: #64748b !important;
}
/* Signature block: operators (=, *, **) */
.md-typeset .doc-signature span.o {
  color: #64748b !important;
}
/* Signature block: keywords (None, True, False) */
.md-typeset .doc-signature span.kc {
  color: #7c3aed !important;
}
/* Signature block: self parameter */
.md-typeset .doc-signature span.bp {
  color: #64748b !important;
}

/* ── API Reference: TOC styling ── */
/* Class-level TOC entries (h2) — bold, larger */
.md-sidebar--secondary .md-nav__list > .md-nav__item > .md-nav__link {
  font-weight: 600;
  font-size: 0.72rem;
  color: var(--text-primary);
}
/* Method-level TOC entries (h3) — normal weight, blue, indented */
.md-sidebar--secondary .md-nav__list > .md-nav__item > .md-nav > .md-nav__list > .md-nav__item > .md-nav__link {
  font-weight: 400;
  font-size: 0.65rem;
  color: #2563eb;
  padding-left: 0.75rem;
  border-left: 2px solid var(--border);
}
.md-sidebar--secondary .md-nav__list > .md-nav__item > .md-nav > .md-nav__list > .md-nav__item > .md-nav__link:hover {
  color: var(--accent-hover);
  border-left-color: var(--accent);
}

/* ── Source code syntax highlighting (matches signature colors) ── */
.md-typeset .highlight span.nf,
.md-typeset .highlight span.fm {
  color: #2563eb !important;
}
.md-typeset .highlight span.k,
.md-typeset .highlight span.kd {
  color: #7c3aed !important;
}
.md-typeset .highlight span.kc {
  color: #7c3aed !important;
}
.md-typeset .highlight span.bp {
  color: #64748b !important;
}
.md-typeset .highlight span.n {
  color: var(--text-primary) !important;
}
.md-typeset .highlight span.nb,
.md-typeset .highlight span.ne {
  color: var(--accent) !important;
}
.md-typeset .highlight span.o,
.md-typeset .highlight span.ow {
  color: #64748b !important;
}
.md-typeset .highlight span.s1,
.md-typeset .highlight span.s2,
.md-typeset .highlight span.sd {
  color: #16803a !important;
}
.md-typeset .highlight span.si {
  color: var(--accent) !important;
}
.md-typeset .highlight span.mi,
.md-typeset .highlight span.mf {
  color: #b45309 !important;
}
.md-typeset .highlight span.c1,
.md-typeset .highlight span.cm {
  color: var(--text-muted) !important;
  font-style: italic;
}
.md-typeset .highlight span.p {
  color: #64748b !important;
}
/* JS-applied class for function/method calls: name followed by ( */
.md-typeset .highlight span.n.fn-call {
  color: #2563eb !important;
}
/* JS-applied class for type names in annotations */
.md-typeset .highlight span.n.type-name {
  color: var(--accent) !important;
}

/* ── API Reference: parameter/return tables ── */
.doc-contents table {
  margin: 0.5rem 0;
  font-size: 0.72rem;
}
.doc-contents table th {
  font-weight: 600;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  background: var(--bg-alt);
}
/* Parameter name (first column) — teal */
.doc-contents .doc-section-item td:first-child code {
  color: var(--accent) !important;
  background: none;
}
/* Type annotation (second column) */
.doc-contents .doc-section-item td:nth-child(2) {
  color: var(--text-secondary);
  word-break: break-word;
}
/* Section title (Parameters:, Returns:) */
.doc-section-title {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.75rem;
}
/* Fallback pre blocks (unparsed docstrings) */
.doc-contents .highlight pre {
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.6;
  padding: 0.75rem 1rem;
  font-size: 0.72rem;
}

/* ── Hero ── */
.hero {
  padding: 3.5rem 2rem 3rem;
  text-align: center;
  max-width: 1100px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.hero h1 span {
  color: var(--accent);
}

.hero p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 1.5rem;
}

.cta-row {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary,
.btn-primary:link,
.btn-primary:visited {
  background: var(--accent-hover);
  color: #fff !important;
}

.btn-primary:hover {
  background: #115e59;
  color: #fff !important;
}

.btn-secondary {
  background: var(--bg-code);
  color: var(--text-primary);
  border: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
}

.btn-secondary:hover {
  border-color: var(--accent);
}
.btn-secondary .copy-icon {
  vertical-align: -2px;
  opacity: 0.5;
  transition: opacity 0.2s;
}
.btn-secondary:hover .copy-icon {
  opacity: 1;
}

/* ── Code block in hero ── */
.hero-code {
  max-width: 860px;
  margin: 2rem auto 0;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-align: left;
  padding: 1.25rem 1.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  line-height: 1.6;
  overflow-x: auto;
}

.hero-code .kw { color: #7c3aed; }
.hero-code .fn { color: #2563eb; }
.hero-code .str { color: #059669; }
.hero-code .num { color: #d97706; }
.hero-code .cm { color: var(--text-muted); }
.hero-code .op { color: #64748b; }

/* ── Features ── */
.features {
  background: var(--bg-alt);
  padding: 3rem 2rem;
}

.features-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: var(--accent);
}

.feature-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-subtle);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--accent);
  font-size: 1.2rem;
}

.feature-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.feature-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ── Benchmarks ── */
.benchmarks {
  padding: 3rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-benchmarks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.hero-benchmarks .chart {
  margin: 0;
  padding: 1rem 1.25rem;
}

.hero-benchmarks .chart-title {
  font-size: 0.78rem;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 0.85rem;
}

.bench-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.bench-table th {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 2px solid var(--border);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.bench-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
}

.bench-bar {
  height: 8px;
  border-radius: 4px;
  background: var(--accent-light);
  display: inline-block;
  vertical-align: middle;
  margin-right: 0.5rem;
}

.bench-bar.tafra { background: var(--accent); }
.bench-bar.pandas { background: #e2e8f0; }
.bench-bar.polars { background: #cbd5e1; }
.bench-fastest { color: var(--accent); font-weight: 600; }

/* ── Comparison ── */
.comparison {
  background: var(--bg-alt);
  padding: 3rem 2rem;
}

.comparison-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.comparison-block {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.comparison-block.highlight {
  border-color: var(--accent);
}

.comparison-block .label {
  padding: 0.75rem 1.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.comparison-block.highlight .label {
  color: var(--accent);
}

.comparison-block pre {
  padding: 1rem 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  line-height: 1.5;
  overflow-x: auto;
  margin: 0;
}

/* ── Landing Footer ── */
.landing-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.landing-footer a,
.landing-footer a:link,
.landing-footer a:visited {
  color: var(--accent);
  text-decoration: none;
}

.landing-footer a:hover {
  text-decoration: underline;
}

/* ── Wider content area ── */
.md-grid {
  max-width: 1800px;
}

.md-content__inner {
  max-width: none;
}


/* ── API Reference spacing ── */
.doc-object:not(.doc-object .doc-object) {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 2px solid var(--border);
}

.doc-object:not(.doc-object .doc-object):first-child {
  border-top: none;
  margin-top: 0;
  padding-top: 0;
}

/* Method-level objects within a class */
.doc-object .doc-object {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--bg-alt);
}

/* Give method signatures more visual weight */
.doc-heading {
  font-size: 1rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg-code);
  border-radius: 4px;
  border-left: 3px solid var(--accent);
  margin-bottom: 1rem;
}

/* More breathing room for doc content */
.doc-contents {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

/* ── Inline bar charts ── */
.chart {
  margin: 1.5rem 0;
  padding: 1.5rem;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.chart-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
  text-align: center;
}

.chart-row {
  display: flex;
  align-items: center;
  margin-bottom: 0.5rem;
}

.chart-row:last-child {
  margin-bottom: 0;
}

.chart-label {
  width: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-align: right;
  padding-right: 0.75rem;
  flex-shrink: 0;
}

.chart-bar-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.chart-bar {
  height: 20px;
  border-radius: 4px;
  background: var(--border);
  min-width: 4px;
  transition: width 0.3s;
}

.chart-bar.fastest {
  background: var(--accent);
}

.chart-value {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  white-space: nowrap;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
  .comparison-grid {
    grid-template-columns: 1fr;
  }
  .hero h1 {
    font-size: 1.6rem;
  }
}