/* ── Rivet Brand Colors ─────────────────────────────────── */

:root {
  --md-primary-fg-color: #1a1a2e;
  --md-primary-fg-color--light: #2d2d4a;
  --md-primary-fg-color--dark: #0f0f1a;
  --md-accent-fg-color: #6c63ff;
  --md-accent-fg-color--transparent: rgba(108, 99, 255, 0.1);

  /* Custom properties */
  --rivet-gradient-start: #6c63ff;
  --rivet-gradient-end: #3b82f6;
  --rivet-surface: #f8f9fc;
  --rivet-border: #e2e8f0;
  --rivet-text-muted: #64748b;
}

[data-md-color-scheme="slate"] {
  --md-primary-fg-color: #1a1a2e;
  --md-primary-fg-color--light: #2d2d4a;
  --md-primary-fg-color--dark: #0f0f1a;
  --md-accent-fg-color: #818cf8;
  --md-accent-fg-color--transparent: rgba(129, 140, 248, 0.1);

  --rivet-surface: #1e1e2e;
  --rivet-border: #313244;
  --rivet-text-muted: #94a3b8;
}

/* ── Header ────────────────────────────────────────────── */

.md-header {
  background: linear-gradient(135deg, var(--rivet-gradient-start), var(--rivet-gradient-end));
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.md-header__button.md-logo img {
  height: 2rem;
  width: auto;
}

.md-tabs {
  background: rgba(0, 0, 0, 0.15);
}

/* ── Hero Section (home page) ──────────────────────────── */

.hero-logo {
  display: block;
  margin: 0 auto 1.5rem;
  width: 180px;
  height: auto;
}

/* ── Hero Section (home page) ──────────────────────────── */

.hero {
  padding: 4rem 0 3rem;
  text-align: center;
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--rivet-gradient-start), var(--rivet-gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.hero p.subtitle {
  font-size: 1.25rem;
  color: var(--rivet-text-muted);
  max-width: 640px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

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

.hero-buttons .md-button {
  border-radius: 8px;
  padding: 0.7rem 2rem;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

.hero-buttons .md-button--primary {
  background: linear-gradient(135deg, var(--rivet-gradient-start), var(--rivet-gradient-end));
  border: none;
  color: white;
}

.hero-buttons .md-button--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(108, 99, 255, 0.4);
}

/* ── Feature Grid ──────────────────────────────────────── */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin: 2.5rem 0;
}

.feature-card {
  background: var(--rivet-surface);
  border: 1px solid var(--rivet-border);
  border-radius: 12px;
  padding: 1.75rem;
  transition: all 0.2s ease;
}

.feature-card:hover {
  border-color: var(--md-accent-fg-color);
  box-shadow: 0 4px 16px var(--md-accent-fg-color--transparent);
  transform: translateY(-2px);
}

.feature-card .twemoji,
.feature-card .feature-icon {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  display: block;
}

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--rivet-text-muted);
  margin: 0;
  line-height: 1.5;
}

/* ── Pillar Cards (concepts overview) ──────────────────── */

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
}

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

.pillar-card {
  background: var(--rivet-surface);
  border: 1px solid var(--rivet-border);
  border-radius: 12px;
  padding: 2rem 1.75rem;
  text-align: center;
  transition: all 0.2s ease;
}

.pillar-card:hover {
  border-color: var(--md-accent-fg-color);
  box-shadow: 0 4px 16px var(--md-accent-fg-color--transparent);
}

.pillar-card .pillar-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.pillar-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
}

.pillar-card .pillar-subtitle {
  font-size: 0.85rem;
  color: var(--md-accent-fg-color);
  font-weight: 600;
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pillar-card p:last-child {
  font-size: 0.9rem;
  color: var(--rivet-text-muted);
  margin: 0;
  line-height: 1.5;
}

/* ── Install Banner ────────────────────────────────────── */

.install-banner {
  background: var(--rivet-surface);
  border: 1px solid var(--rivet-border);
  border-radius: 12px;
  padding: 1.5rem 2rem;
  text-align: center;
  margin: 2rem 0;
}

.install-banner code {
  font-size: 1.1rem;
  font-weight: 600;
}

/* ── Content Tabs Fix ──────────────────────────────────── */

.md-typeset .tabbed-set {
  border-radius: 8px;
  overflow: hidden;
}

.md-typeset .tabbed-labels {
  border-bottom: 2px solid var(--rivet-border);
  gap: 0;
}

.md-typeset .tabbed-labels > label {
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.7rem 1.2rem;
  border-radius: 0;
  opacity: 0.6;
  transition: all 0.2s ease;
}

.md-typeset .tabbed-labels > label:hover {
  opacity: 0.85;
}

.md-typeset .tabbed-labels > label.tabbed-labels--active,
.md-typeset .tabbed-set > input:checked + label {
  opacity: 1;
  border-bottom: 2px solid var(--md-accent-fg-color);
  color: var(--md-accent-fg-color);
}

/* ── Code Blocks ───────────────────────────────────────── */

.md-typeset code {
  border-radius: 4px;
}

.md-typeset pre {
  border-radius: 8px;
}

.md-typeset pre > code {
  font-size: 0.82rem;
  line-height: 1.6;
}

/* ── Admonitions ───────────────────────────────────────── */

.md-typeset .admonition,
.md-typeset details {
  border-radius: 8px;
  border-left-width: 4px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
}

/* ── Tables ────────────────────────────────────────────── */

.md-typeset table:not([class]) {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--rivet-border);
  font-size: 0.88rem;
}

.md-typeset table:not([class]) th {
  background: var(--rivet-surface);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

/* ── Mermaid Diagrams ──────────────────────────────────── */

.md-typeset .mermaid {
  text-align: center;
  margin: 1.5rem 0;
}

/* ── Footer ────────────────────────────────────────────── */

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

/* ── Sidebar Navigation ────────────────────────────────── */

.md-nav__link {
  font-size: 0.85rem;
}

/* ── Quick Links Grid ──────────────────────────────────── */

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.link-card {
  display: block;
  background: var(--rivet-surface);
  border: 1px solid var(--rivet-border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}

.link-card:hover {
  border-color: var(--md-accent-fg-color);
  box-shadow: 0 4px 12px var(--md-accent-fg-color--transparent);
  transform: translateY(-1px);
  text-decoration: none;
  color: inherit;
}

.link-card strong {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
}

.link-card span {
  font-size: 0.82rem;
  color: var(--rivet-text-muted);
}

/* ── Comparison Table (plugins) ────────────────────────── */

.md-typeset .comparison-table th,
.md-typeset .comparison-table td {
  text-align: center;
  padding: 0.6rem 0.8rem;
}

.md-typeset .comparison-table td:first-child,
.md-typeset .comparison-table th:first-child {
  text-align: left;
}