:root {
  --bg: #0d1117;
  --card: #161b22;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #3fb950;
  --border: #30363d;
  --danger: #f85149;
  --link: #58a6ff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
.layout { display: flex; min-height: 100vh; }
aside {
  width: 220px;
  padding: 1.25rem;
  border-right: 1px solid var(--border);
  background: #010409;
}
.brand { font-weight: 700; margin-bottom: 1.25rem; font-size: 0.95rem; }
nav { display: flex; flex-direction: column; gap: 0.35rem; }
nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.4rem 0.55rem;
  border-radius: 6px;
}
nav a:hover, nav a.active { background: var(--card); color: var(--text); }
.aside-note { font-size: 0.75rem; color: var(--muted); margin-top: 1.5rem; }
.aside-link { display: block; margin-top: 1rem; font-size: 0.8rem; color: var(--link); }
main { flex: 1; padding: 1.5rem 2rem; max-width: 720px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}
h1 { font-size: 1.35rem; margin: 0 0 0.75rem; }
h2 { font-size: 1rem; margin: 0 0 0.5rem; }
.muted { color: var(--muted); }
.err { color: var(--danger); font-size: 0.9rem; }
.hidden { display: none !important; }
label { display: block; margin: 0.75rem 0 0.35rem; font-size: 0.85rem; color: var(--muted); }
input, select {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0d1117;
  color: var(--text);
}
button, .btn {
  margin-top: 0.75rem;
  background: var(--accent);
  color: #0d1117;
  border: none;
  font-weight: 600;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  cursor: pointer;
}
button.ghost, .btn.ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  width: 100%;
}
button.btn-disabled,
button:disabled {
  background: #21262d !important;
  color: var(--muted) !important;
  border: 1px solid var(--border);
  cursor: not-allowed;
  opacity: 0.75;
}
.plan-points {
  margin: 1rem 0;
  padding-left: 0;
  list-style: none;
  color: var(--text);
  font-size: 0.95rem;
}
.plan-points li { margin: 0.4rem 0; color: var(--muted); }
.top { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; }
.badge {
  font-size: 0.75rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  text-transform: uppercase;
}
.bar {
  height: 8px;
  background: #21262d;
  border-radius: 4px;
  overflow: hidden;
  margin: 0.5rem 0 1rem;
}
.bar > i { display: block; height: 100%; background: var(--accent); }
.row { display: flex; justify-content: space-between; gap: 1rem; margin: 0.35rem 0; font-size: 0.95rem; }
.ok { color: var(--accent); font-size: 0.85rem; }
code { font-size: 0.85em; background: #21262d; padding: 0.1rem 0.3rem; border-radius: 4px; }
.key-row {
  display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap;
  margin: 0.35rem 0 0.75rem; padding: 0.5rem 0.65rem;
  background: #0d1117; border: 1px solid var(--border); border-radius: 8px;
}
.key-row .hint { font-family: ui-monospace, monospace; font-size: 0.9rem; flex: 1; word-break: break-all; }
.key-row button.eye {
  margin: 0; padding: 0.35rem 0.55rem; background: #21262d; color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; font-size: 0.85rem;
}
.key-row button.eye:hover { border-color: var(--accent); }
.banner-ok { background: rgba(63,185,80,0.12); border: 1px solid var(--accent); border-radius: 8px; padding: 0.65rem 0.85rem; margin: 0.5rem 0 1rem; }
.banner-warn { background: rgba(248,81,73,0.1); border: 1px solid var(--danger); border-radius: 8px; padding: 0.65rem 0.85rem; margin: 0.5rem 0 1rem; }
@media (max-width: 700px) {
  .layout { flex-direction: column; }
  aside { width: 100%; border-right: none; border-bottom: 1px solid var(--border); }
}