:root {
  --bg: #0f1419;
  --bg-card: #1a1f26;
  --bg-input: #0c1014;
  --border: #2a3140;
  --border-strong: #3a4555;
  --text: #e7ecf3;
  --text-muted: #8a96a8;
  --accent: #339af0;
  --accent-hover: #4dabf7;
  --accent-fg: #ffffff;
  --error: #fa5252;
  --success: #51cf66;
  --code-bg: #06080b;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: var(--font-body); line-height: 1.5; }

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle at 20% -10%, rgba(51, 154, 240, 0.12), transparent 50%),
    radial-gradient(circle at 80% 10%, rgba(51, 154, 240, 0.06), transparent 40%),
    var(--bg);
}

.hero {
  padding: 64px 24px 32px;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.logo h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}
.tagline {
  font-size: 17px;
  color: var(--text-muted);
  margin: 0;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 24px 48px;
  flex: 1;
  width: 100%;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  margin-bottom: 20px;
}
.card h2 {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 12px;
}

.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin: -8px -8px 20px;
  padding: 0 8px;
}
.tab {
  background: none;
  border: none;
  color: var(--text-muted);
  font: 600 14px/1 var(--font-body);
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.tab:hover:not(.active) { color: var(--text); }

.auth-form { display: none; flex-direction: column; gap: 14px; }
.auth-form.active { display: flex; }
.auth-form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; }
.auth-form label em { color: var(--text-muted); font-style: normal; font-weight: 400; }
.auth-form input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text);
  font: 400 14px var(--font-body);
}
.auth-form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(51, 154, 240, 0.18);
}

button.primary, button.secondary {
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font: 600 14px var(--font-body);
  cursor: pointer;
  transition: background-color 80ms;
}
button.primary {
  background: var(--accent);
  color: var(--accent-fg);
  margin-top: 6px;
}
button.primary:hover { background: var(--accent-hover); }
button.primary:active { transform: translateY(1px); }
button.secondary {
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border-strong);
}
button.secondary:hover { background: #161b22; }

.result {
  margin-top: 20px;
  padding: 18px;
  background: var(--bg-input);
  border: 1px solid var(--success);
  border-radius: 8px;
}
.result h3 { margin: 0 0 8px; font-size: 15px; font-weight: 600; }
.result .muted { margin: 0 0 12px; }

.token-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
  margin: 8px 0;
}
.token-row code {
  flex: 1;
  padding: 10px 12px;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  word-break: break-all;
  user-select: all;
}

.muted { color: var(--text-muted); font-size: 13px; }

code {
  font-family: var(--font-mono);
  background: var(--code-bg);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.92em;
  color: #fcc419;
}

.setup ol { margin: 0; padding-left: 22px; }
.setup li { margin: 0 0 10px; }

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 13px;
}
pre code {
  background: transparent;
  padding: 0;
  color: var(--text);
}

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

.error {
  margin-top: 14px;
  padding: 10px 12px;
  background: rgba(250, 82, 82, 0.1);
  border: 1px solid var(--error);
  border-radius: 6px;
  color: #ffa8a8;
  font-size: 13px;
}

.hidden { display: none !important; }

footer {
  text-align: center;
  padding: 24px;
  color: var(--text-muted);
  font-size: 13px;
}

.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
}
.topnav .brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
}
.wordmark {
  letter-spacing: -0.01em;
}
.wordmark .dot {
  color: var(--accent);
  font-weight: 800;
}
.topnav .navlinks {
  display: flex;
  gap: 20px;
  font-size: 14px;
}
.topnav .navlinks a {
  color: var(--text-muted);
}
.topnav .navlinks a:hover {
  color: var(--text);
  text-decoration: none;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(81, 207, 102, 0.14);
  color: #69db7c;
  border: 1px solid rgba(81, 207, 102, 0.35);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}

.micro-print {
  font-size: 13px;
  color: var(--text-muted);
  margin: 14px 0 0;
}

.self-host h2 {
  margin: 0 0 8px;
}
.self-host p {
  margin: 0 0 8px;
  color: var(--text-muted);
  font-size: 14px;
}
.self-host p:last-child { margin-bottom: 0; }

.hero-narrow {
  max-width: 760px;
  padding: 56px 24px 24px;
}
.hero-narrow h1 {
  font-size: clamp(34px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0 0 18px;
}

.cta {
  display: inline-block;
  margin-top: 18px;
  padding: 12px 22px;
  background: var(--accent);
  color: var(--accent-fg);
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: background-color 80ms, transform 80ms;
}
.cta:hover {
  background: var(--accent-hover);
  text-decoration: none;
}
.cta:active {
  transform: translateY(1px);
}

.features-main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 24px 48px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  margin-bottom: 36px;
}

.feature {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  transition: border-color 120ms, transform 120ms;
}
.feature:hover {
  border-color: var(--border-strong);
  transform: translateY(-1px);
}
.feature h2 {
  font-size: 17px;
  font-weight: 600;
  margin: 14px 0 8px;
  letter-spacing: -0.01em;
}
.feature p {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
}
.feature p code {
  color: #fcc419;
}
.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: rgba(51, 154, 240, 0.12);
  color: var(--accent);
}

.cta-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 36px 28px;
  text-align: center;
}
.cta-card h2 {
  margin: 0 0 8px;
  font-size: 22px;
  font-weight: 600;
}
.cta-card .muted {
  font-size: 14px;
  margin: 0 0 6px;
}

@media (max-width: 540px) {
  .hero { padding: 40px 16px 24px; }
  main { padding: 16px; }
  .card { padding: 20px; }
  .logo h1 { font-size: 26px; }
}