:root {
  --bg: #0f1115;
  --panel: #171a21;
  --ink: #e8eaed;
  --muted: #9aa0aa;
  --accent: #7c9cff;
  --line: #262b35;
  --stub: #5a606b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
}
header, main, footer { max-width: 940px; margin: 0 auto; padding: 0 20px; }
header { padding-top: 48px; padding-bottom: 12px; }
h1 { font-size: 2.4rem; margin: 0; letter-spacing: -0.02em; }
.tagline { font-size: 1.15rem; color: var(--ink); margin: 8px 0 4px; }
.sub { color: var(--muted); max-width: 640px; }
h2 { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 36px 0 14px; }

.picker-help { color: var(--muted); font-size: 0.9rem; margin: -4px 0 18px; max-width: 640px; }
.picker-help a { color: var(--accent); }
.picker-help-alt { display: block; font-size: 0.82rem; margin-top: 4px; }

.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
@media (max-width: 720px) { .grid { grid-template-columns: repeat(2, 1fr); } }
.card {
  text-align: left; background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; padding: 14px; cursor: pointer; color: var(--ink);
  display: flex; flex-direction: column; gap: 4px; transition: border-color .15s, transform .05s;
}
.card:hover { border-color: var(--accent); }
.card:active { transform: translateY(1px); }
.card.active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.card .emoji { font-size: 1.7rem; line-height: 1; }
.card .mbti { font-weight: 700; font-size: 1.1rem; letter-spacing: 0.04em; }
.card .nick { color: var(--accent); font-size: 0.9rem; }
.card .blurb { color: var(--muted); font-size: 0.8rem; }
.card.stub { opacity: 0.55; cursor: not-allowed; }
.card .soon { font-size: 0.7rem; color: var(--stub); text-transform: uppercase; letter-spacing: 0.06em; }

.output-type { font-size: 1.5rem; font-weight: 700; margin: 8px 0 4px; letter-spacing: -0.01em; }

.modes { display: flex; gap: 12px; flex-wrap: wrap; }
.mode {
  position: relative; flex: 1; min-width: 220px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; padding: 14px; cursor: pointer; display: flex; flex-direction: column; gap: 4px;
  transition: border-color .15s, transform .05s;
}
.mode:hover { border-color: var(--accent); }
.mode:active { transform: translateY(1px); }
.mode input { position: absolute; opacity: 0; pointer-events: none; margin: 0; }
.mode:has(input:checked) { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.mode:has(input:checked) .mode-title { color: var(--accent); }
.mode:has(input:focus-visible) { outline: 2px solid var(--accent); outline-offset: 2px; }
.mode-title { font-weight: 600; }
.mode-desc { color: var(--muted); font-size: 0.85rem; }

.actions { display: flex; align-items: center; gap: 10px; margin: 18px 0; flex-wrap: wrap; }
button {
  background: var(--accent); color: #0b0d12; border: 0; border-radius: 9px;
  padding: 9px 16px; font-weight: 600; cursor: pointer; font-size: 0.95rem;
}
button:hover { filter: brightness(1.08); }
#download { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.status { color: var(--muted); font-size: 0.85rem; }

pre {
  background: #0b0d12; border: 1px solid var(--line); border-radius: 12px;
  padding: 18px; overflow-x: auto; white-space: pre-wrap; word-break: break-word;
  font: 13px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace; color: #d7dbe2;
}
.example { margin-top: 34px; }
.ex-note { color: var(--muted); font-size: 0.85rem; margin: -6px 0 14px; }
.exchange { display: flex; flex-direction: column; gap: 10px; }
.bubble {
  border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px;
  display: flex; flex-direction: column; gap: 5px; max-width: 88%;
}
.bubble .who { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.07em; color: var(--muted); }
.bubble.user { background: var(--panel); align-self: flex-start; }
.bubble.ai { background: #0b0d12; border-color: var(--accent); align-self: flex-end; }
.bubble.ai .who { color: var(--accent); }

.howto { margin-top: 34px; }
.howto-lead { color: var(--muted); font-size: 0.85rem; margin: -6px 0 14px; }
.howto-list { margin: 0 0 14px; padding-left: 20px; }
.howto-list li { margin: 7px 0; }
.howto-list code {
  background: #0b0d12; border: 1px solid var(--line); border-radius: 6px;
  padding: 1px 6px; font: 0.85em ui-monospace, SFMono-Regular, Menlo, monospace; color: #d7dbe2;
}
.howto-note { color: var(--muted); font-size: 0.85rem; margin: 0; }

footer { color: var(--muted); font-size: 0.8rem; padding: 40px 20px 60px; }