:root {
  --bg: #0d1117;
  --bg-subtle: #161b22;
  --card-bg: #1c2128;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #d29922;
  --accent-light: #f1e05a;
  --link: #58a6ff;
  --link-hover: #79c0ff;
  --success: #3fb950;
  --warning: #d29922;
  --danger: #f85149;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-badge {
  font-size: 1.5rem;
}

.brand .eyebrow {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

.brand .sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  transition: all 0.15s ease;
}

nav a:hover {
  color: var(--text);
  background-color: var(--card-bg);
}

nav a.is-current {
  color: var(--accent-light);
  background-color: var(--card-bg);
  border: 1px solid var(--border);
}

.external-links {
  display: flex;
  gap: 0.5rem;
}

.btn-external {
  display: inline-block;
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--accent-light);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn-external:hover {
  border-color: var(--accent);
  background-color: #262c36;
}

main {
  max-width: 1040px;
  width: 100%;
  margin: 2rem auto;
  padding: 0 1.5rem;
  flex: 1;
}

h1 {
  font-size: 2.2rem;
  margin-bottom: 0.75rem;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
}

h3 {
  font-size: 1.2rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--accent-light);
}

p {
  margin-bottom: 1rem;
}

p.lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  color: var(--link-hover);
}

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0 2.5rem 0;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.card h3 {
  margin-top: 0;
  font-size: 1.1rem;
  color: var(--text);
}

.card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.card a {
  font-size: 0.85rem;
  font-weight: 600;
}

.table-container {
  overflow-x: auto;
  margin: 1.5rem 0;
  border-radius: 8px;
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  text-align: left;
}

th, td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
}

th {
  background-color: var(--bg-subtle);
  color: var(--text-muted);
  font-weight: 600;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

pre {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  overflow-x: auto;
  margin: 1rem 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.5;
}

code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background-color: var(--card-bg);
  padding: 0.2em 0.4em;
  border-radius: 4px;
}

pre code {
  background-color: transparent;
  padding: 0;
}

li {
  margin-left: 1.5rem;
  margin-bottom: 0.35rem;
}

blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  color: var(--text-muted);
  margin: 1rem 0;
}

.alert {
  border-left: 4px solid var(--border);
  background-color: var(--bg-subtle);
  padding: 1rem;
  border-radius: 0 6px 6px 0;
  margin: 1.5rem 0;
}

.alert-title {
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.alert-note {
  border-left-color: var(--link);
}
.alert-note .alert-title {
  color: var(--link);
}

.alert-tip {
  border-left-color: var(--success);
}
.alert-tip .alert-title {
  color: var(--success);
}

.alert-important, .alert-warning {
  border-left-color: var(--warning);
}
.alert-important .alert-title, .alert-warning .alert-title {
  color: var(--warning);
}

.badge {
  display: inline-block;
  padding: 0.15em 0.5em;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
  text-transform: uppercase;
}

.badge-simulated {
  background-color: rgba(63, 185, 80, 0.2);
  color: var(--success);
  border: 1px solid rgba(63, 185, 80, 0.4);
}

.badge-live {
  background-color: rgba(88, 166, 255, 0.2);
  color: var(--link);
  border: 1px solid rgba(88, 166, 255, 0.4);
}

.badge-unknown {
  background-color: rgba(139, 148, 158, 0.2);
  color: var(--text-muted);
  border: 1px solid rgba(139, 148, 158, 0.4);
}

.badge-planned {
  background-color: rgba(210, 153, 34, 0.2);
  color: var(--warning);
  border: 1px solid rgba(210, 153, 34, 0.4);
}

footer {
  background-color: var(--bg-subtle);
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 3rem;
}

footer p {
  margin-bottom: 0.35rem;
}