/* ── MeshCore color palette (matches meshcore.io) ─────────────────────────── */
:root,
[data-md-color-scheme="slate"] {
  --mc-bg:        #111827;
  --mc-surface:   #1f2937;
  --mc-border:    rgba(255, 255, 255, 0.08);
  --mc-border-h:  rgba(255, 255, 255, 0.20);
  --mc-text:      #f9fafb;
  --mc-muted:     #9ca3af;
  --mc-accent:    #38bdf8;   /* sky-400 — subtle blue accent */
  --mc-accent-h:  #7dd3fc;

  /* Material overrides */
  --md-primary-fg-color:        var(--mc-accent);
  --md-primary-bg-color:        var(--mc-bg);
  --md-accent-fg-color:         var(--mc-accent);
  --md-default-bg-color:        var(--mc-bg);
  --md-default-fg-color:        var(--mc-text);
  --md-code-bg-color:           var(--mc-surface);
  --md-typeset-a-color:         var(--mc-accent);
}

[data-md-color-scheme="default"] {
  --mc-bg:        #f9fafb;
  --mc-surface:   #f3f4f6;
  --mc-border:    rgba(0, 0, 0, 0.08);
  --mc-border-h:  rgba(0, 0, 0, 0.18);
  --mc-text:      #111827;
  --mc-muted:     #6b7280;
  --mc-accent:    #0ea5e9;
  --mc-accent-h:  #0284c7;
}

/* ── Dark mode: explicit text color overrides ──────────────────────────────── */
[data-md-color-scheme="slate"] {
  --md-typeset-color: #f9fafb;
}

[data-md-color-scheme="slate"] .md-typeset,
[data-md-color-scheme="slate"] .md-content__inner {
  color: #f9fafb;
}

[data-md-color-scheme="slate"] .md-typeset h1,
[data-md-color-scheme="slate"] .md-typeset h2,
[data-md-color-scheme="slate"] .md-typeset h3,
[data-md-color-scheme="slate"] .md-typeset h4,
[data-md-color-scheme="slate"] .md-typeset h5,
[data-md-color-scheme="slate"] .md-typeset h6 {
  color: #f9fafb;
}

[data-md-color-scheme="slate"] .md-typeset p,
[data-md-color-scheme="slate"] .md-typeset li,
[data-md-color-scheme="slate"] .md-typeset td,
[data-md-color-scheme="slate"] .md-typeset th,
[data-md-color-scheme="slate"] .md-typeset dt,
[data-md-color-scheme="slate"] .md-typeset dd,
[data-md-color-scheme="slate"] .md-typeset blockquote {
  color: #e5e7eb;
}

[data-md-color-scheme="slate"] .md-typeset strong {
  color: #f9fafb;
}

[data-md-color-scheme="slate"] .md-typeset table thead th {
  color: #f9fafb;
  background-color: #1f2937;
}

[data-md-color-scheme="slate"] .md-typeset table tbody tr:nth-child(even) {
  background-color: rgba(255,255,255,0.03);
}

/* nav & sidebar */
[data-md-color-scheme="slate"] .md-nav__link {
  color: #d1d5db;
}

[data-md-color-scheme="slate"] .md-nav__link--active,
[data-md-color-scheme="slate"] .md-nav__link:hover {
  color: var(--mc-accent);
}

[data-md-color-scheme="slate"] .md-nav__title {
  color: #9ca3af;
}

/* header & tabs */
[data-md-color-scheme="slate"] .md-header,
[data-md-color-scheme="slate"] .md-tabs {
  background-color: rgba(17, 24, 39, 0.95);
  border-bottom: 1px solid var(--mc-border);
  backdrop-filter: blur(8px);
}

[data-md-color-scheme="slate"] .md-header__title,
[data-md-color-scheme="slate"] .md-tabs__link,
[data-md-color-scheme="slate"] .md-tabs__link--active {
  color: #f9fafb;
}

/* Header icon buttons — SVGs inherit currentColor, so color = icon color */
[data-md-color-scheme="slate"] .md-header__button,
[data-md-color-scheme="slate"] .md-header__button.md-icon {
  color: #f9fafb;
}

[data-md-color-scheme="slate"] .md-header__button:hover {
  opacity: 0.75;
}

/* Search */
[data-md-color-scheme="slate"] .md-search__form {
  background-color: rgba(255, 255, 255, 0.08);
}

[data-md-color-scheme="slate"] .md-search__input {
  color: #f9fafb;
}

[data-md-color-scheme="slate"] .md-search__input::placeholder {
  color: #9ca3af;
}

[data-md-color-scheme="slate"] .md-search__icon,
[data-md-color-scheme="slate"] .md-search__icon.md-icon {
  color: #f9fafb;
}

[data-md-color-scheme="slate"] .md-search-result__meta,
[data-md-color-scheme="slate"] .md-search-result__title,
[data-md-color-scheme="slate"] .md-search-result__teaser {
  color: #e5e7eb;
}

/* Sidebar & drawer */
[data-md-color-scheme="slate"] .md-sidebar {
  background-color: #111827;
}

[data-md-color-scheme="slate"] .md-nav__button,
[data-md-color-scheme="slate"] .md-nav__button.md-icon {
  color: #f9fafb;
}

/* TOC (secondary nav) */
[data-md-color-scheme="slate"] .md-nav--secondary .md-nav__link {
  color: #9ca3af;
}

[data-md-color-scheme="slate"] .md-nav--secondary .md-nav__link--active,
[data-md-color-scheme="slate"] .md-nav--secondary .md-nav__link:hover {
  color: var(--mc-accent);
}

/* Footer */
[data-md-color-scheme="slate"] .md-footer {
  background-color: #0f172a;
}

[data-md-color-scheme="slate"] .md-footer-meta {
  background-color: #0a101e;
}

[data-md-color-scheme="slate"] .md-footer__link,
[data-md-color-scheme="slate"] .md-footer-meta__inner {
  color: #6b7280;
}

[data-md-color-scheme="slate"] .md-footer__title,
[data-md-color-scheme="slate"] .md-footer__direction {
  color: #9ca3af;
}

/* Breadcrumb */
[data-md-color-scheme="slate"] .md-header__topic {
  color: #f9fafb;
}

/* Back-to-top button */
[data-md-color-scheme="slate"] .md-top {
  background-color: #1f2937;
  color: #f9fafb;
}

/* admonitions */
[data-md-color-scheme="slate"] .md-typeset .admonition,
[data-md-color-scheme="slate"] .md-typeset details {
  color: #e5e7eb;
}

[data-md-color-scheme="slate"] .md-typeset .admonition-title,
[data-md-color-scheme="slate"] .md-typeset summary {
  color: #f9fafb;
}

/* ── Hero banner ───────────────────────────────────────────────────────────── */
.hero {
  padding: 4rem 2rem;
  text-align: center;
  background: linear-gradient(160deg, #0f172a 0%, #111827 60%, #1a2744 100%);
  color: var(--mc-text);
  margin: -0.8rem -0.8rem 2rem -0.8rem;
  border-radius: 0 0 8px 8px;
  border-bottom: 1px solid var(--mc-border);
  position: relative;
  overflow: hidden;
}

/* subtle grid overlay like meshcore.io's mesh canvas */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(56,189,248,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,189,248,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.hero h1 {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: #ffffff;
  position: relative;
}

.hero p {
  font-size: 1.15rem;
  color: #d1d5db;
  max-width: 640px;
  margin: 0 auto 2rem auto;
  position: relative;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

.hero-btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
  font-size: 1rem;
  transition: opacity 0.2s, transform 0.15s;
}

.hero-btn:hover {
  opacity: 0.88;
  transform: translateY(-1px);
  text-decoration: none;
}

.hero-btn-primary {
  background: var(--mc-accent);
  color: #0f172a !important;
}

.hero-btn-secondary {
  background: rgba(255,255,255,0.08);
  color: #f9fafb !important;
  border: 1px solid rgba(255,255,255,0.2);
}

/* ── Feature grid ──────────────────────────────────────────────────────────── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}

.feature-card {
  background: var(--mc-surface);
  border-radius: 8px;
  padding: 1.5rem;
  border: 1px solid var(--mc-border);
  transition: border-color 0.2s, transform 0.15s;
}

.feature-card:hover {
  border-color: var(--mc-border-h);
  transform: translateY(-2px);
}

.feature-card h3 {
  margin-top: 0;
  font-size: 1rem;
  color: var(--mc-text);
}

.feature-card p {
  margin-bottom: 0;
  font-size: 0.9rem;
  color: var(--mc-muted);
}

/* ── Code block font — ensures box-drawing chars are reliably monospace ───── */
.md-typeset pre,
.md-typeset code,
.md-typeset pre > code {
  font-family: 'Consolas', 'Cascadia Code', 'Source Code Pro',
               'Lucida Console', 'DejaVu Sans Mono', monospace;
}

/* ── Light mode hero fallback ──────────────────────────────────────────────── */
[data-md-color-scheme="default"] .hero {
  background: linear-gradient(160deg, #0f172a 0%, #1e3a5f 100%);
}