:root {
  --bg: #0f1216;
  --card: #1a2027;
  --fg: #e8edf2;
  --muted: #9aa7b4;
  --accent: #4f9cf9;
  --error: #ff6b6b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
  display: flex;
  justify-content: center;
  padding: 2rem 1rem;
}
.card { max-width: 34rem; width: 100%; }
h1 { font-size: 1.4rem; }
h2 { font-size: 1.05rem; margin-bottom: 0.25rem; }
.lede { color: var(--fg); }
.subject { color: var(--muted); }
.door {
  background: var(--card);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
}
.tag {
  font-size: 0.7rem;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 0 0.3rem;
  vertical-align: middle;
}
p { color: var(--muted); line-height: 1.45; }
button {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  cursor: pointer;
}
button:hover { filter: brightness(1.1); }
button.copy { padding: 0.2rem 0.6rem; font-size: 0.8rem; margin-left: 0.5rem; }
input {
  width: 100%;
  padding: 0.5rem;
  margin: 0.5rem 0;
  border-radius: 6px;
  border: 1px solid #2c3641;
  background: #10151b;
  color: var(--fg);
}
code {
  background: #10151b;
  padding: 0.3rem 0.5rem;
  border-radius: 5px;
  word-break: break-all;
  display: inline-block;
  margin-top: 0.3rem;
}
progress { width: 100%; height: 0.6rem; margin: 0.5rem 0; }
.error { color: var(--error); }
.fine { font-size: 0.8rem; color: var(--muted); }
footer { margin-top: 2rem; }