:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface2: #243044;
  --text: #e8eaed;
  --muted: #9aa5b1;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #34d399;
  --error: #f87171;
  --border: #2d3a4d;
  --radius: 10px;
  font-family:
    "Segoe UI",
    system-ui,
    -apple-system,
    sans-serif;
}

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

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

header.site .inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.brand {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.95rem;
}

nav a {
  color: var(--muted);
}

nav a:hover,
nav a[aria-current="page"] {
  color: var(--text);
  text-decoration: none;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 0.5rem;
}

.page-lead {
  color: var(--muted);
  margin: 0 0 2rem;
  font-size: 1.05rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  margin-bottom: 1.6rem;
}

.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
}

.card p {
  margin: 0 0 0.75rem;
  color: var(--muted);
}

.card p:last-child {
  margin-bottom: 0;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  counter-reset: step;
}

.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem 1.35rem 3.5rem;
  position: relative;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 1.1rem;
  top: 1.25rem;
  width: 1.75rem;
  height: 1.75rem;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.step ul,
.step ol {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
  color: var(--muted);
}

.step li {
  margin-bottom: 0.35rem;
}

.step code,
p code {
  font-size: 0.88em;
  background: var(--surface2);
  padding: 0.15em 0.45em;
  border-radius: 4px;
  color: #a5d8ff;
}

pre code {
  font-size: 0.82rem;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
}

.table-wrap {
  overflow-x: auto;
  margin: 0.75rem 0;
}

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

th,
td {
  text-align: left;
  padding: 0.5rem 0.65rem;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-weight: 600;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: #2d3a4f;
}

label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  max-width: 420px;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.form-group {
  margin-bottom: 1.25rem;
}

.hint {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.35rem;
}

.result-box {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface2);
  display: none;
}

.result-box.visible {
  display: block;
}

.result-box.success {
  border-color: rgba(52, 211, 153, 0.35);
}

.result-box.error {
  border-color: rgba(248, 113, 113, 0.4);
}

.result-box pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.88rem;
}

.result-title {
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
  color: var(--muted);
}

.result-box.success .result-title {
  color: var(--success);
}

.result-box.error .result-title {
  color: var(--error);
}

details {
  margin-top: 0.75rem;
  margin-bottom: 0.5rem;
  color: var(--muted);
}

details summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
}

.landing-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 560px) {
  .landing-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.landing-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--surface);
}

.landing-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.landing-card p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.h-small {
  font-size: 1rem;
  margin: 0 0 0.5rem;
}

.banner-ok {
  border-color: rgba(52, 211, 153, 0.45) !important;
  background: rgba(52, 211, 153, 0.08);
}

.banner-error {
  border-color: rgba(248, 113, 113, 0.45) !important;
  background: rgba(248, 113, 113, 0.08);
}

.optional-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  margin-bottom: 0.65rem;
}

select {
  width: 100%;
  max-width: 420px;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem 1.25rem 2rem;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}