:root {
  --bg: #090d12;
  --card: #10171f;
  --card-2: #131c26;
  --line: #1f2a36;
  --line-2: #2b3947;
  --text: #dde6ee;
  --muted: #8c9cab;
  --faint: #63727f;
  --accent: #35d6c4;
  --accent-bg: #0f2723;
  --warn: #f0b445;
  --warn-bg: #241c0e;
  --warn-line: #4a3a1a;
  --danger: #f26d7d;
  --danger-bg: #241216;
  --good: #4ade9a;
  --good-bg: #0d241a;
  --mono: "Cascadia Code", "JetBrains Mono", "SF Mono", ui-monospace, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
/* The `hidden` attribute must always win, even over class selectors that set
   `display` (e.g. .overlay{display:flex}). Without this, hidden overlays show. */
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.top {
  display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap;
  padding: 22px 24px; border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; font-size: 1.15rem; letter-spacing: -.01em; }
.brand .lock { margin-right: 4px; }
.crumb { font-family: var(--mono); font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: var(--accent); }

.wrap { max-width: 720px; margin: 0 auto; padding: 24px 20px 60px; display: flex; flex-direction: column; gap: 18px; }

.banner {
  margin: 0; padding: 12px 14px; border-radius: 10px; font-size: .92rem;
  border: 1px solid var(--line-2);
}
.banner.ok { color: var(--good); background: var(--good-bg); border-color: #1d4634; }
.banner.bad { color: var(--danger); background: var(--danger-bg); border-color: #4d2029; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 20px 20px;
}
.card-label {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--faint); margin-bottom: 12px; font-weight: 600;
}
.card-label.warn { color: var(--warn); }
.warncard { background: var(--warn-bg); border-color: var(--warn-line); }

.uname {
  font-family: var(--mono); font-size: 1.7rem; font-weight: 600; letter-spacing: -.01em;
  color: var(--accent); word-break: break-word; margin-bottom: 14px;
}
.field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 14px; }
.field .k { font-family: var(--mono); font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: var(--faint); }
.safety { font-family: var(--mono); font-size: .95rem; color: var(--text); letter-spacing: .05em; word-break: break-all; }
code { background: var(--card-2); border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; display: block; }

.meta-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.pill {
  font-family: var(--mono); font-size: .7rem; padding: 3px 10px; border-radius: 999px;
  border: 1px solid var(--accent); color: var(--accent); background: var(--accent-bg);
}
.muted { color: var(--muted); }
.adv { margin-top: 6px; }
.adv summary { cursor: pointer; color: var(--faint); font-size: .85rem; font-family: var(--mono); }
.pubhex { margin-top: 8px; font-family: var(--mono); font-size: .78rem; color: var(--muted); word-break: break-all; }

.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.btn {
  font-family: var(--sans); font-size: .92rem; font-weight: 600;
  padding: 10px 16px; border-radius: 9px; cursor: pointer;
  background: var(--accent); color: #04201c; border: 1px solid var(--accent);
}
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--accent); }
.btn.danger { background: transparent; color: var(--danger); border-color: #4d2029; }
.btn.danger:hover { background: var(--danger-bg); }
.btn:focus-visible, .choice:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.choices { display: flex; flex-direction: column; gap: 10px; }
.choice {
  text-align: left; cursor: pointer; display: flex; flex-direction: column; gap: 3px;
  background: var(--card-2); border: 1px solid var(--line-2); border-radius: 11px; padding: 14px 15px;
  color: var(--text);
}
.choice:hover { border-color: var(--accent); }
.choice-t { font-weight: 650; }
.choice-d { color: var(--muted); font-size: .88rem; }

.mnemonic {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px 14px;
  list-style: none; padding: 0; margin: 8px 0 0; counter-reset: w;
}
.mnemonic li {
  font-family: var(--mono); font-size: .95rem; padding: 8px 10px;
  background: var(--card); border: 1px solid var(--line-2); border-radius: 8px;
  counter-increment: w; display: flex; gap: 8px;
}
.mnemonic li::before { content: counter(w); color: var(--faint); min-width: 1.6em; text-align: right; }
@media (max-width: 520px) { .mnemonic { grid-template-columns: repeat(2, 1fr); } }

.ta, .inp {
  width: 100%; font-family: var(--mono); font-size: .9rem; color: var(--text);
  background: var(--card-2); border: 1px solid var(--line-2); border-radius: 9px; padding: 10px 12px;
  resize: vertical;
}
.ta:focus, .inp:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.err { color: var(--danger); font-size: .88rem; margin: 8px 0 0; }

.petform { display: flex; gap: 8px; flex-wrap: wrap; }
.petform .inp { flex: 1 1 180px; width: auto; }
.petlist { list-style: none; padding: 0; margin: 14px 0 0; display: flex; flex-direction: column; gap: 8px; }
.petlist li {
  display: flex; align-items: center; gap: 10px; justify-content: space-between;
  background: var(--card-2); border: 1px solid var(--line); border-radius: 9px; padding: 8px 12px;
}
.petlist .pn { font-weight: 600; }
.petlist .pk { font-family: var(--mono); font-size: .72rem; color: var(--faint); word-break: break-all; }
.petlist .rm { background: none; border: none; color: var(--danger); cursor: pointer; font-size: 1.2rem; line-height: 1; }

.testout { list-style: none; padding: 0; margin: 14px 0 0; display: flex; flex-direction: column; gap: 6px; }
.testout li { font-family: var(--mono); font-size: .85rem; display: flex; gap: 10px; }
.testout li.ok::before { content: "ok"; color: var(--good); }
.testout li.bad::before { content: "FAIL"; color: var(--danger); }
.testout li.info { color: var(--muted); }

.foot { text-align: center; color: var(--faint); font-family: var(--mono); font-size: .72rem; padding: 24px; border-top: 1px solid var(--line); }