:root {
  --simic-ink: #1f2933;
  --simic-muted: #52616b;
  --simic-navy: #19598e;
  --simic-blue: #0072b2;
  --simic-purple: #5b4587;
  --simic-red: #c7352f;
  --simic-accent: var(--simic-blue);
  --simic-accent-soft: #e8f1f8;
  --simic-border: #cdd9e4;
  --simic-surface: #eef5fb;
  --simic-white: #ffffff;
}

body {
  color: var(--simic-ink);
  background: var(--simic-surface);
  font-size: 1rem;
  line-height: 1.65;
}

a {
  color: var(--simic-accent);
}

a:hover,
a:focus {
  color: #005b8f;
}

.navbar {
  border-bottom: 0;
  box-shadow: 0 2px 10px rgba(31, 41, 51, 0.08);
}

.navbar,
.navbar .dropdown-menu {
  background: var(--simic-navy) !important;
}

.navbar a,
.navbar-title,
.navbar-nav .nav-link {
  color: var(--simic-white) !important;
}

.navbar-title {
  font-weight: 700;
}

.navbar-nav .nav-link.active,
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
  color: #dbefff !important;
}

main.content {
  max-width: 1060px;
  padding: 2rem 2.2rem 3rem;
  background: var(--simic-white);
  border: 1px solid var(--simic-border);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(31, 41, 51, 0.06);
}

.quarto-title-block .title {
  color: var(--simic-navy);
  font-size: 2.8rem;
  font-weight: 800;
  text-align: center;
}

.lead {
  max-width: 900px;
  margin: 0 auto 1.75rem;
  color: var(--simic-muted);
  font-size: 1.25rem;
  font-weight: 600;
  text-align: center;
}

.graphical-abstract {
  display: flex;
  justify-content: center;
  margin: 1.75rem auto 2.75rem;
}

.graphical-abstract img {
  width: min(100%, 1040px);
  height: auto;
  padding: 0;
  border: 1px solid var(--simic-border);
  border-radius: 8px;
  background: var(--simic-white);
  box-shadow: 0 8px 24px rgba(31, 41, 51, 0.12);
}

.component-grid,
.tutorial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}

.component-card,
.tutorial-card {
  padding: 1.2rem;
  border: 1px solid var(--simic-border);
  border-radius: 8px;
  background: var(--simic-white);
}

.component-card h3,
.tutorial-card h3 {
  margin-top: 0;
  font-size: 1.2rem;
  font-weight: 800;
}

.pipeline-card {
  border-top: 5px solid var(--simic-purple);
}

.pipeline-card h3 {
  color: var(--simic-purple);
}

.viz-card {
  border-top: 5px solid var(--simic-red);
}

.viz-card h3 {
  color: var(--simic-red);
}

.tutorial-frame {
  width: 100%;
  min-height: 760px;
  border: 1px solid var(--simic-border);
  border-radius: 8px;
  background: var(--simic-white);
}

h2 {
  margin-top: 2.4rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--simic-border);
  color: var(--simic-ink);
}

table {
  width: 100%;
  border: 1px solid var(--simic-border);
  background: var(--simic-white);
}

thead {
  background: var(--simic-accent-soft);
}

th {
  color: var(--simic-ink);
}

td,
th {
  vertical-align: top;
}

code {
  color: var(--simic-ink);
}

.package-tabs {
  margin: 2rem 0;
}

.package-tabs .nav-tabs {
  border-bottom: 1px solid var(--simic-border);
}

.package-tabs .nav-tabs .nav-link {
  color: var(--simic-ink);
  border: 1px solid transparent;
  font-weight: 700;
}

.package-tabs .nav-tabs .nav-link.active {
  color: var(--simic-white);
  background: var(--simic-navy);
  border-color: var(--simic-navy);
}

.package-tabs .tab-content {
  padding: 1.4rem;
  border: 1px solid var(--simic-border);
  border-top: 0;
  border-radius: 0 0 8px 8px;
  background: var(--simic-white);
}

.package-panel {
  padding: 0.2rem 0 0;
}

.pipeline-panel {
  border-top: 5px solid var(--simic-purple);
}

.viz-panel {
  border-top: 5px solid var(--simic-red);
}

.btn {
  margin-top: 0.5rem;
  border-radius: 6px;
  font-weight: 700;
}

.btn-primary {
  background: var(--simic-purple);
  border-color: var(--simic-purple);
}

.btn-primary:hover,
.btn-primary:focus {
  background: #49366f;
  border-color: #49366f;
}

.btn-danger {
  background: var(--simic-red);
  border-color: var(--simic-red);
}

.btn-danger:hover,
.btn-danger:focus {
  background: #a92d28;
  border-color: #a92d28;
}

.btn-outline-primary {
  color: var(--simic-purple);
  border-color: var(--simic-purple);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
  color: var(--simic-white);
  background: var(--simic-purple);
  border-color: var(--simic-purple);
}

.btn-outline-danger {
  color: var(--simic-red);
  border-color: var(--simic-red);
}

.btn-outline-danger:hover,
.btn-outline-danger:focus {
  color: var(--simic-white);
  background: var(--simic-red);
  border-color: var(--simic-red);
}

.page-footer {
  color: var(--simic-muted);
  border-top: 1px solid var(--simic-border);
  background: var(--simic-white);
}