:root,
[data-bs-theme="dark"] {
  --rv-bg: #0b1220;
  --rv-bg-alt: #0f1930;
  --rv-surface: #14213a;
  --rv-surface-hover: #1a2a47;
  --rv-border: #22314f;
  --rv-text: #e5edf8;
  --rv-text-muted: #93a3bd;
  --rv-accent: #38bdf8;
  --rv-accent-strong: #0ea5e9;
  --rv-accent-soft: rgba(56, 189, 248, 0.12);
  --rv-success: #34d399;
  --rv-warning: #fbbf24;
  --rv-info: #60a5fa;
  --rv-muted: #94a3b8;

  --bs-body-bg: var(--rv-bg);
  --bs-body-color: var(--rv-text);
  --bs-border-color: var(--rv-border);
  --bs-primary: var(--rv-accent);
  --bs-primary-rgb: 56, 189, 248;
  --bs-link-color: var(--rv-accent);
  --bs-link-color-rgb: 56, 189, 248;
  --bs-link-hover-color: var(--rv-accent-strong);
  --bs-link-hover-color-rgb: 14, 165, 233;
}

html {
  position: relative;
  min-height: 100%;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  padding-top: 4rem;
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background-color: var(--rv-bg);
  color: var(--rv-text);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: #f1f5f9;
  font-weight: 700;
  letter-spacing: -0.01em;
}

a {
  text-decoration: none;
}

/* Navigation */
.site-navbar {
  background-color: rgba(11, 18, 32, 0.92);
  border-bottom: 1px solid var(--rv-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.site-navbar .navbar-brand {
  color: var(--rv-text);
  font-weight: 700;
}

.site-navbar .nav-link {
  color: var(--rv-text-muted);
  font-weight: 500;
}

.site-navbar .nav-link:hover,
.site-navbar .nav-link:focus {
  color: var(--rv-text);
}

.site-navbar .nav-link.active {
  color: var(--rv-accent);
}

.site-navbar .navbar-toggler {
  border-color: var(--rv-border);
}

.site-navbar .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(229,237,248,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.brand-mark {
  color: var(--rv-accent);
  font-family: ui-monospace, "Cascadia Code", Consolas, "Courier New", monospace;
  font-weight: 700;
}

/* Buttons */
.btn-accent {
  background-color: var(--rv-accent);
  border-color: var(--rv-accent);
  color: #06121f;
  font-weight: 600;
}

.btn-accent:hover,
.btn-accent:focus {
  background-color: var(--rv-accent-strong);
  border-color: var(--rv-accent-strong);
  color: #06121f;
}

.btn-outline-accent {
  border-color: var(--rv-accent);
  color: var(--rv-accent);
  font-weight: 600;
}

.btn-outline-accent:hover,
.btn-outline-accent:focus {
  background-color: var(--rv-accent-soft);
  border-color: var(--rv-accent);
  color: var(--rv-accent-strong);
}

.btn:focus-visible,
a:focus-visible {
  outline: 2px solid var(--rv-accent);
  outline-offset: 2px;
}

/* Sections */
.section {
  padding: 4.5rem 0;
}

.section-alt {
  background-color: var(--rv-bg-alt);
  border-top: 1px solid var(--rv-border);
  border-bottom: 1px solid var(--rv-border);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 2.5rem;
}

.section-heading h2 {
  margin-bottom: 0.75rem;
}

.section-lead {
  color: var(--rv-text-muted);
  font-size: 1.125rem;
  line-height: 1.7;
}

/* Hero */
.hero {
  position: relative;
  padding: 7rem 0 5rem;
  overflow: hidden;
  background:
    radial-gradient(1100px 460px at 50% -10%, rgba(56, 189, 248, 0.12), transparent 60%),
    var(--rv-bg);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at 50% 0%, black 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, black 0%, transparent 72%);
  pointer-events: none;
}

.hero-content {
  position: relative;
}

.eyebrow {
  display: inline-block;
  color: var(--rv-accent);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.hero-content h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-lead {
  color: var(--rv-text-muted);
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  line-height: 1.7;
  margin-bottom: 2rem;
}

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

/* Cards */
.card {
  background-color: var(--rv-surface);
  border: 1px solid var(--rv-border);
  border-radius: 0.75rem;
}

.capability-card {
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.capability-card:hover {
  border-color: rgba(56, 189, 248, 0.45);
  transform: translateY(-2px);
}

.capability-title {
  font-size: 1.15rem;
  margin: 0 0 0.5rem;
}

.capability-description {
  color: var(--rv-text-muted);
  font-size: 0.95rem;
}

.capability-highlights {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.capability-highlights li {
  background-color: var(--rv-accent-soft);
  color: var(--rv-accent);
  border-radius: 999px;
  font-size: 0.8rem;
  padding: 0.25rem 0.75rem;
}

/* Status badges */
.status-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  white-space: nowrap;
}

.status-completed {
  background-color: rgba(52, 211, 153, 0.14);
  color: var(--rv-success);
}

.status-inprogress {
  background-color: rgba(251, 191, 36, 0.14);
  color: var(--rv-warning);
}

.status-planned {
  background-color: rgba(96, 165, 250, 0.14);
  color: var(--rv-info);
}

.status-consideration {
  background-color: rgba(148, 163, 184, 0.14);
  color: var(--rv-muted);
}

/* Workflow */
.workflow {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.workflow-step {
  position: relative;
  counter-increment: step;
}

.workflow-step::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  color: var(--rv-accent);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.workflow-step-body {
  background-color: var(--rv-surface);
  border: 1px solid var(--rv-border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  height: 100%;
}

.workflow-step-title {
  display: block;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.workflow-step-description {
  color: var(--rv-text-muted);
  font-size: 0.9rem;
}

@media (min-width: 992px) {
  .workflow {
    flex-direction: row;
    align-items: stretch;
  }

  .workflow-step {
    flex: 1;
  }

  .workflow-step:not(:last-child)::after {
    content: "\2192";
    position: absolute;
    top: 50%;
    right: -0.55rem;
    transform: translateY(-50%);
    color: var(--rv-accent);
    font-size: 1.25rem;
    z-index: 1;
  }
}

/* Feature list */
.feature-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}

.feature-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--rv-text-muted);
}

.feature-list li::before {
  content: "\203A";
  position: absolute;
  left: 0;
  color: var(--rv-accent);
  font-weight: 700;
}

/* Footer */
.site-footer {
  background-color: var(--rv-bg-alt);
  border-top: 1px solid var(--rv-border);
  margin-top: 3rem;
}

.footer-brand {
  color: var(--rv-text);
  font-size: 1.15rem;
  font-weight: 700;
}

.footer-tagline {
  color: var(--rv-text-muted);
  max-width: 30rem;
}

.footer-heading {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--rv-text-muted);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  color: var(--rv-text);
}

.footer-links a:hover,
.footer-links a:focus {
  color: var(--rv-accent);
}

.footer-bottom {
  border-top: 1px solid var(--rv-border);
  padding: 1.5rem 0;
  color: var(--rv-text-muted);
  font-size: 0.9rem;
}

/* Inner page hero */
.page-hero {
  padding: 5rem 0 3rem;
  background:
    radial-gradient(900px 400px at 50% -20%, rgba(56, 189, 248, 0.08), transparent 60%),
    var(--rv-bg);
  border-bottom: 1px solid var(--rv-border);
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 0.75rem;
}

.page-lead {
  color: var(--rv-text-muted);
  font-size: 1.15rem;
  max-width: 44rem;
}

/* Roadmap */
.roadmap-notice {
  background-color: var(--rv-accent-soft);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  color: var(--rv-text);
  margin-bottom: 2rem;
}

.roadmap-notice p {
  margin: 0;
}

.roadmap-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.roadmap-category {
  margin-bottom: 3rem;
}

.roadmap-category h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--rv-border);
}

.roadmap-item-title {
  font-size: 1.05rem;
  margin: 0;
}

.roadmap-item-description {
  color: var(--rv-text-muted);
  font-size: 0.95rem;
  margin-top: 0.5rem;
  margin-bottom: 0;
}

.milestone {
  display: inline-block;
  margin-top: 0.75rem;
  color: var(--rv-text-muted);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.8rem;
}

/* Prose */
.prose h2 {
  font-size: 1.5rem;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p {
  color: var(--rv-text-muted);
  line-height: 1.75;
}

/* Documentation */
.doc-topic {
  color: inherit;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.doc-topic:hover,
.doc-topic:focus {
  border-color: rgba(56, 189, 248, 0.45);
  transform: translateY(-2px);
  color: inherit;
}

.doc-topic-title {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.doc-topic-description {
  color: var(--rv-text-muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.doc-topic-cta {
  color: var(--rv-accent);
  font-weight: 600;
  font-size: 0.9rem;
}

.section-note {
  color: var(--rv-text-muted);
  font-size: 0.9rem;
  margin-top: 2rem;
}

/* Error */
.error-code {
  color: var(--rv-accent);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}