:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #1565c0;
  --accent-fg: #ffffff;
  --danger: #b91c1c;
  --warn: #92400e;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f17;
    --surface: #111827;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --border: #1f2937;
    --accent: #60a5fa;
    --accent-fg: #0b0f17;
    --danger: #f87171;
    --warn: #fbbf24;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 24px 16px;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.card {
  width: 100%;
  max-width: 440px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: 0 1px 3px rgb(0 0 0 / 6%);
}

.wordmark { margin: 0 0 20px; font-weight: 700; font-size: 18px; letter-spacing: -0.01em; }
.wordmark span { color: var(--accent); }
h1 { font-size: 20px; margin: 0 0 8px; }
p { margin: 0 0 12px; }
.muted, .foot { color: var(--muted); font-size: 14px; }
.foot { margin: 0; }
.host { word-break: break-all; }
.target {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 13px;
  color: var(--muted);
  word-break: break-all;
}
.warn { color: var(--warn); font-size: 14px; }
.error { color: var(--danger); font-size: 14px; margin-top: 8px; }

label { display: block; font-size: 14px; margin: 12px 0 6px; }
input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

button, .button {
  display: inline-block;
  margin-top: 12px;
  padding: 10px 16px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-fg);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.sandbox {
  margin-left: 6px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--warn);
  color: var(--surface);
  font-size: 12px;
  font-style: normal;
  font-weight: 600;
  vertical-align: middle;
}
.sandbox-note { color: var(--warn); font-size: 14px; }