/* Brand colours — N-Hub (NNNCo default). Fixed brand tokens; a per-deployment
 * colour override would mean editing this file. All values are brand tokens:
 *   Neura Teal       #00A5A3  primary accent, links/text on dark bg
 *   Accessible Teal  #025353  links/accent text on light bg (WCAG-AA)
 *   Deep Space Black #030304  header chrome, text on light bg
 *   Iridescent Pearl #F6F2F4  light surfaces, text on dark chrome
 */

:root {
  /* Header / top-nav chrome — Deep Space Black so the white logomark reads.
     The brand logo never sits on the teal swatch, so the header is not teal. */
  --md-primary-fg-color: #030304;
  --md-primary-fg-color--light: #025353;
  --md-primary-fg-color--dark: #030304;
  --md-primary-bg-color: #F6F2F4;
  --md-primary-bg-color--light: #F6F2F4;

  /* Accent (active nav, focus rings) — Neura Teal */
  --md-accent-fg-color: #00A5A3;
  --md-accent-fg-color--transparent: rgba(0, 165, 163, 0.1);

  --md-typeset-font-family: "Inter", "ui-sans-serif", "system-ui", sans-serif;
}

[data-md-color-scheme="slate"] {
  --md-primary-fg-color: #030304;
  --md-primary-bg-color: #F6F2F4;
  --md-default-bg-color: #1f2937;
  --md-default-bg-color--light: #111827;
}

/* Content links — Accessible Teal on light (WCAG-AA; Neura Teal fails as
   small text on light), Neura Teal on dark. */
.md-typeset a {
  color: #025353;
}

[data-md-color-scheme="slate"] .md-typeset a {
  color: #00A5A3;
}

/* -------------------------------------------------------------------------
 * Custom home page — hero, cards, capabilities, quick links
 * ------------------------------------------------------------------------- */

/* Hero banner */
.nhub-hero {
  background: linear-gradient(135deg, #00A5A3 0%, #025353 50%, #030304 100%);
  padding: 4rem 1rem;
  color: #ffffff;
}

.nhub-hero__content {
  max-width: 640px;
}

.nhub-hero__content h1 {
  font-size: 2.4rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: #ffffff;
}

.nhub-hero__content p {
  font-size: 1.15rem;
  opacity: 0.9;
  margin: 0 0 1.5rem;
  line-height: 1.6;
}

.nhub-hero__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.nhub-hero__actions .md-button {
  border-radius: 6px;
  font-weight: 600;
}

.nhub-hero__actions .md-button--primary {
  background: #F6F2F4;
  color: #025353;
  border-color: #F6F2F4;
}

.nhub-hero__actions .md-button--primary:hover {
  background: #ffffff;
  border-color: #ffffff;
}

.nhub-hero__actions .md-button:not(.md-button--primary) {
  border: 2px solid rgba(255, 255, 255, 0.6);
  color: #ffffff;
  background: transparent;
}

.nhub-hero__actions .md-button:not(.md-button--primary):hover {
  border-color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
}

/* Sections */
.nhub-section {
  padding: 3rem 1rem;
}

.nhub-section--alt {
  background: rgba(0, 165, 163, 0.04);
}

[data-md-color-scheme="slate"] .nhub-section--alt {
  background: rgba(0, 165, 163, 0.06);
}

.nhub-section__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 1.5rem;
  color: var(--md-default-fg-color);
}

/* Audience cards (3-column) */
.nhub-cards--audience {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

@media (max-width: 768px) {
  .nhub-cards--audience {
    grid-template-columns: 1fr;
  }
}

.nhub-card {
  display: block;
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  background: var(--md-default-bg-color);
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}

.nhub-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

[data-md-color-scheme="slate"] .nhub-card {
  border-color: #374151;
  background: #111827;
}

.nhub-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: rgba(0, 165, 163, 0.12);
  margin-bottom: 0.75rem;
}

.nhub-card__icon .twemoji svg {
  width: 22px;
  height: 22px;
  fill: #00A5A3;
}

.nhub-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--md-default-fg-color);
}

.nhub-card p {
  font-size: 0.9rem;
  margin: 0;
  color: var(--md-default-fg-color--light);
  line-height: 1.5;
}

/* Capabilities grid (3x2) */
.nhub-cards--capabilities {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

@media (max-width: 768px) {
  .nhub-cards--capabilities {
    grid-template-columns: 1fr;
  }
}

.nhub-cap {
  padding: 1.25rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: var(--md-default-bg-color);
}

[data-md-color-scheme="slate"] .nhub-cap {
  border-color: #374151;
  background: #111827;
}

.nhub-cap__icon {
  display: inline-flex;
  margin-bottom: 0.5rem;
}

.nhub-cap__icon svg {
  width: 28px;
  height: 28px;
  fill: #00A5A3;
}

.nhub-cap h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: #00A5A3;
}

.nhub-cap p {
  font-size: 0.85rem;
  margin: 0;
  color: var(--md-default-fg-color--light);
  line-height: 1.5;
}

/* Quick links — compact grid */
.nhub-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

@media (max-width: 768px) {
  .nhub-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

.nhub-link {
  display: block;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: var(--md-default-bg-color);
  text-decoration: none;
  transition: border-color 0.15s;
}

.nhub-link:hover {
  border-color: #00A5A3;
}

[data-md-color-scheme="slate"] .nhub-link {
  border-color: #374151;
  background: #111827;
}

.nhub-link strong {
  display: block;
  font-size: 0.8rem;
  color: #00A5A3;
  margin-bottom: 0.15rem;
}

.nhub-link span {
  font-size: 0.7rem;
  color: var(--md-default-fg-color--light);
  line-height: 1.3;
}

/* -------------------------------------------------------------------------
 * Mermaid diagram theming — brand-aligned
 * Material for MkDocs injects these as Mermaid theme variables.
 * ------------------------------------------------------------------------- */

/* Light mode */
:root {
  /* Node fills */
  --md-mermaid-node-bg-color: #e6f7f7;
  --md-mermaid-node-fg-color: #030304;

  /* Edges / lines */
  --md-mermaid-edge-color: #00A5A3;

  /* Labels */
  --md-mermaid-label-bg-color: #ffffff;
  --md-mermaid-label-fg-color: #030304;

  /* Sequence diagrams */
  --md-mermaid-sequence-actor-bg-color: #00A5A3;
  --md-mermaid-sequence-actor-fg-color: #ffffff;
  --md-mermaid-sequence-actor-border-color: #025353;
  --md-mermaid-sequence-actorman-bg-color: #e6f7f7;
  --md-mermaid-sequence-actorman-line-color: #00A5A3;
  --md-mermaid-sequence-number-bg-color: #00A5A3;
  --md-mermaid-sequence-number-fg-color: #ffffff;
  --md-mermaid-sequence-box-bg-color: rgba(0, 165, 163, 0.08);
  --md-mermaid-sequence-box-border-color: #00A5A3;
  --md-mermaid-sequence-message-fg-color: #030304;
  --md-mermaid-sequence-message-line-color: #00A5A3;
  --md-mermaid-sequence-note-bg-color: #e6f7f7;
  --md-mermaid-sequence-note-fg-color: #030304;
  --md-mermaid-sequence-note-border-color: #00A5A3;
  --md-mermaid-sequence-loop-bg-color: rgba(0, 165, 163, 0.06);
  --md-mermaid-sequence-loop-border-color: #00A5A3;
  --md-mermaid-sequence-loop-fg-color: #030304;
}

/* Dark mode overrides */
[data-md-color-scheme="slate"] {
  --md-mermaid-node-bg-color: #1a3a3a;
  --md-mermaid-node-fg-color: #e0f0f0;
  --md-mermaid-edge-color: #00A5A3;
  --md-mermaid-label-bg-color: #1f2937;
  --md-mermaid-label-fg-color: #e0f0f0;

  --md-mermaid-sequence-actor-bg-color: #025353;
  --md-mermaid-sequence-actor-fg-color: #ffffff;
  --md-mermaid-sequence-actor-border-color: #00A5A3;
  --md-mermaid-sequence-actorman-bg-color: #1a3a3a;
  --md-mermaid-sequence-actorman-line-color: #00A5A3;
  --md-mermaid-sequence-number-bg-color: #025353;
  --md-mermaid-sequence-number-fg-color: #ffffff;
  --md-mermaid-sequence-box-bg-color: rgba(0, 165, 163, 0.12);
  --md-mermaid-sequence-box-border-color: #00A5A3;
  --md-mermaid-sequence-message-fg-color: #e0f0f0;
  --md-mermaid-sequence-message-line-color: #00A5A3;
  --md-mermaid-sequence-note-bg-color: #1a3a3a;
  --md-mermaid-sequence-note-fg-color: #e0f0f0;
  --md-mermaid-sequence-note-border-color: #025353;
  --md-mermaid-sequence-loop-bg-color: rgba(0, 165, 163, 0.08);
  --md-mermaid-sequence-loop-border-color: #00A5A3;
  --md-mermaid-sequence-loop-fg-color: #e0f0f0;
}