/* OffRouter site — quiet dark console. Flat surfaces, hairline seams,
   one rationed amber accent reserved for focus and action. */

:root {
  --bg: #0a0a0c;
  --surface: #0e0e12;
  --fg: #ececf1;
  --muted: #a5a5ae;
  --border: #1f1f26;
  --border-strong: #34343e;
  --accent: #f0b429;
  --accent-hover: #f5c14e;
  --accent-ink: #0a0a0c;
  --max-width: 768px;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  --mono: ui-monospace, "SF Mono", "SFMono-Regular", Menlo, Consolas,
    "Liberation Mono", monospace;
}

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

html { color-scheme: dark; }

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--fg);
  background: var(--bg);
  padding: 0 1.25rem;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--accent);
  color: var(--accent-ink);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 10;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.5rem 1rem;
  text-decoration: none;
}

.skip:focus {
  left: 0;
}

/* ---------- Typography ---------- */

h1, h2, h3, h4 {
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 600;
}

h1 { font-size: 1.9rem; font-weight: 700; }

h2 {
  font-size: 1.3rem;
  margin: 3.5rem 0 1rem;
}

h3 {
  font-size: 1.05rem;
  margin: 1.75rem 0 0.5rem;
}

h4 {
  font-size: 0.95rem;
  margin: 1.5rem 0 0.5rem;
}

p { margin-bottom: 0.75rem; }

ul, ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

li { margin-bottom: 0.4rem; }

strong { font-weight: 600; }

a {
  color: var(--fg);
  text-decoration-color: var(--border-strong);
  text-underline-offset: 3px;
}

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

/* ---------- Header & nav ---------- */

header {
  padding: 3.5rem 0 0;
  margin-bottom: 2rem;
}

header p {
  color: var(--muted);
  margin-top: 0.5rem;
  font-size: 1.05rem;
}

nav {
  margin-bottom: 2.5rem;
  font-size: 0.9rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-right: 1.25rem;
}

nav a:hover {
  color: var(--fg);
}

/* Landing top bar */

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

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 60px;
  padding: 0.75rem 0;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--fg);
  font-weight: 650;
  letter-spacing: -0.01em;
  text-decoration: none;
}

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

.brand-mark {
  width: 9px;
  height: 9px;
  background: var(--accent);
  flex: none;
}

.site-header nav {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
}

.site-header nav a:last-child { margin-right: 0; }

/* ---------- Hero ---------- */

.hero {
  padding: 5rem 0 1rem;
}

.hero h1 {
  font-size: clamp(2.25rem, 6vw, 3.25rem);
  letter-spacing: -0.035em;
}

.hero .lede {
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.55;
  margin-top: 1rem;
  max-width: 32rem;
}

.hero .actions {
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ---------- Buttons (the amber action) ---------- */

.btn {
  display: inline-block;
  padding: 0.6rem 1.15rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  font-size: 0.925rem;
  text-decoration: none;
  border: 1px solid var(--accent);
}

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

.btn-secondary {
  background: transparent;
  color: var(--fg);
  border-color: var(--border-strong);
  font-weight: 500;
}

.btn-secondary:hover {
  border-color: var(--muted);
  color: var(--fg);
}

/* ---------- Command line block ---------- */

.command {
  font-family: var(--mono);
  font-size: 0.9rem;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.7rem 1rem;
  color: var(--fg);
  white-space: nowrap;
  overflow-x: auto;
}

.command .prompt {
  color: var(--accent);
  user-select: none;
}

/* ---------- Code ---------- */

code {
  font-family: var(--mono);
  font-size: 0.875em;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.1em 0.35em;
}

pre {
  font-family: var(--mono);
  font-size: 0.875rem;
  line-height: 1.6;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1rem 1.25rem;
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
}

pre code {
  background: none;
  border: 0;
  padding: 0;
  font-size: inherit;
}

/* ---------- Notice ---------- */

.honesty {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  padding: 0.875rem 1.125rem;
  margin: 2rem 0;
  font-size: 0.925rem;
  color: var(--muted);
}

.honesty strong {
  color: var(--fg);
  font-weight: 600;
}

/* ---------- Landing sections ---------- */

.section {
  padding: 2.5rem 0 1rem;
}

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

.section > p {
  max-width: 40rem;
}

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

/* Hairline-seamed card grid */

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin: 1.75rem 0 1rem;
}

.card {
  background: var(--bg);
  padding: 1.5rem;
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.925rem;
}

/* A lone card in the last row spans the full width */
.card:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

/* Numbered steps with hairline separators */

.steps {
  list-style: none;
  padding: 0;
  margin: 1.75rem 0 1rem;
  border-top: 1px solid var(--border);
  counter-reset: step;
}

.steps li {
  counter-increment: step;
  display: flex;
  gap: 1.25rem;
  padding: 1.1rem 0.25rem;
  margin: 0;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.95rem;
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  color: var(--fg);
  font-weight: 600;
  font-size: 0.85rem;
  padding-top: 0.2rem;
  flex: none;
}

.steps strong {
  color: var(--fg);
  font-weight: 600;
}

/* Documentation link rows */

.doc-list {
  list-style: none;
  padding: 0;
  margin: 1.75rem 0 1rem;
  border-top: 1px solid var(--border);
}

.doc-list li {
  margin: 0;
  border-bottom: 1px solid var(--border);
}

.doc-list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.85rem 0.25rem;
  text-decoration: none;
}

.doc-list .doc-title {
  color: var(--fg);
  font-weight: 500;
  flex: none;
}

.doc-list .doc-desc {
  color: var(--muted);
  font-size: 0.875rem;
  text-align: right;
}

.doc-list a:hover .doc-title {
  color: var(--accent);
}

/* ---------- Table ---------- */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0 1.5rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
}

th, td {
  text-align: left;
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  font-weight: 600;
  background: var(--surface);
}

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

/* ---------- Misc ---------- */

blockquote {
  border-left: 2px solid var(--border-strong);
  padding-left: 1rem;
  margin: 1rem 0;
  color: var(--muted);
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

footer {
  margin-top: 5rem;
  padding: 1.75rem 0 3rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.875rem;
}

footer a {
  color: var(--muted);
  text-decoration-color: var(--border-strong);
}

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

.site-footer {
  margin-top: 5rem;
  border-top: 1px solid var(--border);
  padding: 0;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1.75rem 0 3rem;
  color: var(--muted);
  font-size: 0.875rem;
}

.site-footer p { margin: 0; }

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }

  .hero { padding: 3.5rem 0 1rem; }

  .doc-list a {
    flex-direction: column;
    gap: 0.15rem;
  }

  .doc-list .doc-desc { text-align: left; }
}