:root {
  color-scheme: light dark;
  --bg: #f7f7fb;
  --card: #ffffff;
  --text: #1a1a1c;
  --muted: #707080;
  --accent: #5c6bff;
  --danger: #d2435c;
  --border: #e2e2ea;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0e12;
    --card: #1a1a20;
    --text: #f1f1f4;
    --muted: #9a9aa6;
    --border: #2b2b34;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.container {
  width: 100%;
  max-width: 520px;
  padding: 32px 20px;
}
.state {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px 24px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
}
.hidden { display: none !important; }

h1, h2 { margin: 0 0 8px; font-size: 22px; }
p { line-height: 1.4; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
code {
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
}

.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  margin: 0 auto 16px;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.card-header { margin-bottom: 18px; }
.fields { display: flex; flex-direction: column; gap: 12px; }
.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.field > span {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--muted);
}
.field-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, monospace;
  word-break: break-all;
}
.field-row .value { flex: 1; }
.field-row .secret { letter-spacing: 4px; }

button {
  font: inherit;
  cursor: pointer;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 6px 12px;
  border-radius: 8px;
}
button:hover { background: var(--bg); }
button.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  padding: 10px 18px;
  margin-top: 12px;
}
button.primary:hover { filter: brightness(1.08); }

input[type=text] {
  font: inherit;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
}
input[type=text]:focus {
  outline: none;
  border-color: var(--accent);
}
.error { color: var(--danger); font-size: 14px; }