:root {
  --bg: #0c0e11;
  --bg-elev: #14181d;
  --bg-panel: #1a1f26;
  --border: #2c333c;
  --text: #e6e9ed;
  --muted: #9aa3ad;
  --accent: #8ec8b8;
  --warn: #d4a84b;
  --focus: #e8c56b;
  --danger: #d37a7a;
  --font-sans: "Segoe UI", system-ui, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", Consolas, monospace;
  --max: 68rem;
  --gap: 0.75rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.45;
  color: var(--text);
  background: var(--bg);
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  z-index: 20;
  padding: 0.4rem 0.7rem;
  background: var(--bg-panel);
  color: var(--text);
  border: 1px solid var(--focus);
  text-decoration: none;
}

.skip-link:focus {
  top: 0.75rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.85em;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

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

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.7rem 1rem;
}

.brand {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
  text-decoration: none;
}

.brand:hover {
  color: var(--accent);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
}

.site-nav a[aria-current="page"] {
  box-shadow: inset 0 -2px 0 var(--accent);
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.25rem 1rem 2.5rem;
}

.page-console main {
  max-width: none;
  padding: 0;
}

h1,
h2,
h3 {
  margin: 0 0 0.5rem;
  font-weight: 600;
  line-height: 1.25;
}

h1 {
  font-size: 1.5rem;
}

h2 {
  font-size: 1.15rem;
}

h3 {
  font-size: 1rem;
}

p {
  margin: 0 0 0.75rem;
}

.lede,
.muted {
  color: var(--muted);
}

.hero {
  display: grid;
  gap: 0.75rem;
  padding: 1.25rem 0 0.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  color: var(--text);
  font: inherit;
  text-decoration: none;
  cursor: pointer;
}

.btn:hover {
  border-color: var(--accent);
  color: var(--text);
}

.btn-primary {
  border-color: var(--accent);
}

.grid {
  display: grid;
  gap: var(--gap);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

.card,
.panel,
.empty {
  border: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 0.85rem 1rem;
}

.card.featured {
  border-color: var(--accent);
}

.card h3 {
  font-family: var(--font-mono);
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 0.6rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.1rem 0.4rem;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  color: var(--text);
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

.badge-icon {
  line-height: 1;
}

.kvs {
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: 0.35rem 0.75rem;
  margin: 0;
}

.kvs dt {
  color: var(--muted);
  font-size: 0.8rem;
}

.kvs dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th,
td {
  padding: 0.45rem 0.65rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--bg-elev);
}

tbody tr:last-child td {
  border-bottom: 0;
}

.diagram {
  border: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 0.75rem;
}

.diagram svg {
  display: block;
  width: 100%;
  height: auto;
}

.empty {
  color: var(--muted);
}

.empty strong {
  display: block;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.banner-demo {
  padding: 0.4rem 1rem;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--warn);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.env-bar {
  padding: 0.35rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.console-shell {
  display: grid;
  grid-template-columns: 14rem 1fr;
  min-height: calc(100vh - 10rem);
}

.console-nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.75rem;
  border-right: 1px solid var(--border);
  background: var(--bg-elev);
}

.console-nav button {
  display: block;
  width: 100%;
  padding: 0.45rem 0.55rem;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.85rem;
  text-align: left;
  cursor: pointer;
}

.console-nav button:hover {
  color: var(--text);
  border-color: var(--border);
}

.console-nav button[aria-current="page"] {
  color: var(--text);
  border-color: var(--accent);
  background: var(--bg-panel);
}

.console-panel {
  padding: 1rem 1.25rem 2rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.site-footer p {
  max-width: var(--max);
  margin: 0 auto 0.35rem;
}

.page-error main {
  min-height: 50vh;
  display: grid;
  align-content: center;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.65);
  padding: 1rem;
  z-index: 30;
}

.modal-backdrop[hidden] {
  display: none;
}

.modal {
  width: min(32rem, 100%);
  border: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 1rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.75rem;
}

@media (max-width: 720px) {
  .console-shell {
    grid-template-columns: 1fr;
  }

  .console-nav {
    border-right: 0;
    border-bottom: 1px solid var(--border);
    flex-direction: row;
    flex-wrap: wrap;
  }

  .kvs {
    grid-template-columns: 1fr;
  }
}

.headroom-result {
  margin-top: var(--gap);
  padding: 0.75rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
}

.warn {
  color: var(--warn);
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}

@media print {
  .skip-link,
  .site-nav,
  .console-nav,
  .hero-actions,
  .banner-demo {
    display: none;
  }

  body {
    background: #fff;
    color: #111;
  }
}