@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;600&display=swap');

/* ---------- palette ---------- */
:root {
  --rp-rust: #ce412b;
  --rp-rust-bright: #e25640;
  --rp-amber: #e8a33d;
  --rp-link-dark: #f08a5c;
}

/* ---------- typography ---------- */
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

h1, h2, h3, h4, .navbar-brand {
  font-family: 'Oswald', 'Inter', sans-serif;
  letter-spacing: 0.01em;
}

code, pre, kbd, samp {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}

/* ---------- dark theme (default) ---------- */
[data-bs-theme="dark"] {
  --bs-body-bg: #171311;
  --bs-body-color: #d8d1c9;
  --bs-secondary-bg: #241e1a;
  --bs-tertiary-bg: #1f1a17;
  --bs-border-color: #3a312b;
  --bs-link-color-rgb: 240, 138, 92;
  --bs-link-hover-color-rgb: 232, 163, 61;
  --bs-primary-rgb: 206, 65, 43;
  --bs-code-color: var(--rp-amber);
}

[data-bs-theme="dark"] body,
[data-bs-theme="dark"] .bg-body {
  background-color: var(--bs-body-bg);
}

[data-bs-theme="dark"] pre {
  background-color: #1f1a17;
  border: 1px solid #3a312b;
}

/* ---------- light theme (warm paper) ---------- */
[data-bs-theme="light"] {
  --bs-body-bg: #faf6f1;
  --bs-body-color: #2e2723;
  --bs-secondary-bg: #f1eae2;
  --bs-tertiary-bg: #f5efe8;
  --bs-border-color: #ddd2c6;
  --bs-link-color-rgb: 178, 49, 27;
  --bs-link-hover-color-rgb: 206, 65, 43;
  --bs-primary-rgb: 206, 65, 43;
  --bs-code-color: #a3501f;
}

/* ---------- header / nav ---------- */
#logo,
header .navbar-brand img {
  height: 1.65rem;
  width: auto;
  margin-right: 0.6rem;
}

header .navbar-brand {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

header .navbar-brand:hover {
  color: var(--rp-rust-bright);
}

/* rust underline accent below the header */
header {
  border-bottom: 2px solid var(--rp-rust) !important;
}

/* ---------- buttons ---------- */
.btn-primary {
  --bs-btn-bg: var(--rp-rust);
  --bs-btn-border-color: var(--rp-rust);
  --bs-btn-hover-bg: var(--rp-rust-bright);
  --bs-btn-hover-border-color: var(--rp-rust-bright);
  --bs-btn-active-bg: var(--rp-rust-bright);
  --bs-btn-active-border-color: var(--rp-rust-bright);
}

/* ---------- hero (landing page) ---------- */
.rp-hero {
  text-align: center;
  padding: 4rem 1rem 3rem;
  background:
    radial-gradient(ellipse at 50% -20%, rgba(206, 65, 43, 0.18), transparent 60%),
    radial-gradient(ellipse at 80% 110%, rgba(232, 163, 61, 0.08), transparent 50%);
  border-radius: 1rem;
  margin-bottom: 2.5rem;
}

.rp-hero .rp-hero-logo {
  width: 96px;
  height: auto;
  margin-bottom: 1rem;
  filter: drop-shadow(0 0 24px rgba(206, 65, 43, 0.45));
}

.rp-hero .rp-badges img {
  width: auto;
  height: 20px;
  margin: 0 2px;
}

.rp-hero h1 {
  font-size: 3rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.rp-hero .rp-tagline {
  font-size: 1.2rem;
  opacity: 0.85;
  max-width: 42rem;
  margin: 0 auto 1.5rem;
}

.rp-hero .rp-cta {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.rp-hero .rp-cta .btn {
  padding: 0.6rem 1.6rem;
  font-weight: 600;
}

/* ---------- card grids ---------- */
.rp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2.5rem;
}

.rp-card {
  display: block;
  color: inherit;
  text-decoration: none;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.75rem;
  padding: 1.25rem;
  background: var(--bs-tertiary-bg);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.rp-card:hover {
  color: inherit;
  border-color: var(--rp-rust);
  box-shadow: 0 0 20px rgba(206, 65, 43, 0.25);
  transform: translateY(-2px);
}

.rp-card .rp-card-icon {
  font-size: 1.6rem;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.rp-card h3 {
  color: rgb(var(--bs-link-color-rgb));
  font-size: 1.05rem;
  margin: 0 0 0.4rem;
}

.rp-card p {
  font-size: 0.9rem;
  margin: 0;
  opacity: 0.85;
}

/* ---------- tables ---------- */
.table thead th {
  border-bottom: 2px solid var(--rp-rust);
}

/* ---------- misc ---------- */
/* underline h2 in conceptual articles only — not in generated API reference pages */
body:not([data-yaml-mime="ManagedReference"]) article h2 {
  border-bottom: 1px solid var(--bs-border-color);
  padding-bottom: 0.3rem;
  margin-top: 2.2rem;
}

@media (max-width: 576px) {
  .rp-hero h1 { font-size: 2.1rem; }
}