:root {
  --bg: #f8f5fb;
  --surface: #ffffff;
  --ink: #2a2433;
  --muted: #6a6475;
  --line: #e2d9ee;
  --accent: #774db1;
  --accent-dark: #5f3a94;
  --accent-soft: #efe7f8;
  --user: #e9defa;
  --head: #5f3a94;
  --gold: #b2aa7b;
  --error: #a3261c;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #16131b;
    --surface: #211d29;
    --ink: #f0ebf5;
    --muted: #aaa3b6;
    --line: #3a3347;
    --accent: #774db1;
    --accent-dark: #8a62c4;
    --accent-soft: #2d2340;
    --user: #2f2740;
    --head: #e4ff66;
    --gold: #b2aa7b;
    --error: #ff8a7d;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.preview-banner {
  background: var(--accent-soft);
  color: var(--ink);
  text-align: center;
  padding: 8px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--line);
}
.wrap { max-width: 720px; margin: 0 auto; padding: 24px 16px 48px; }
.brand { text-align: center; margin: 8px 0 24px; }
.brand-mark { color: var(--head); font: 600 22px/1.2 Georgia, "Times New Roman", serif; margin: 0; letter-spacing: .01em; }
.brand-by { margin: 4px 0 0; color: var(--muted); font-size: 14px; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
  border-radius: var(--radius);
  padding: 28px 24px;
}
h1 { color: var(--head); font: 600 28px/1.25 Georgia, "Times New Roman", serif; margin: 0 0 12px; }
h2 { color: var(--head); font: 600 17px/1.3 Georgia, "Times New Roman", serif; margin: 0 0 8px; }
.lede { font-size: 18px; }
p { margin: 0 0 14px; }
label { display: block; font-weight: 600; font-size: 15px; margin: 18px 0 6px; }
input[type="text"], input[type="email"], input[type="password"], textarea {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
}
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
#code { letter-spacing: .08em; text-transform: uppercase; }
#code::placeholder { letter-spacing: 0; text-transform: none; }

.btn {
  display: inline-block;
  margin-top: 20px;
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 10px;
  padding: 12px 22px;
  font: 600 16px/1 inherit;
  cursor: pointer;
}
.btn:hover { background: var(--accent-dark); }
.btn:disabled { opacity: .55; cursor: default; }
.btn:focus-visible { outline: 3px solid var(--accent-soft); outline-offset: 2px; }
.error { color: var(--error); font-size: 15px; margin: 12px 0 0; }

.privacy {
  margin-top: 22px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
  font-size: 15px;
}
.privacy-line { margin: 22px 0 0; font-size: 15px; }
.privacy { margin-top: 10px; padding: 12px 18px; }
.privacy summary { cursor: pointer; font-weight: 600; }
.privacy[open] summary { margin-bottom: 12px; }
.privacy ul { margin: 0; padding-left: 20px; }
.privacy li { margin: 0 0 8px; }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; margin-top: 18px; }
.check input { margin-top: 5px; width: 18px; height: 18px; flex: none; accent-color: var(--accent); }

/* Chat */
.saved { text-align: center; color: var(--muted); font-size: 14px; margin: 0 0 16px; }
.log { display: flex; flex-direction: column; gap: 14px; }
.msg { max-width: 88%; padding: 14px 18px; border-radius: var(--radius); word-wrap: break-word; overflow-wrap: anywhere; }
.msg.ai { align-self: flex-start; background: var(--surface); border: 1px solid var(--line); }
.msg.user { align-self: flex-end; background: var(--user); white-space: pre-wrap; }
.msg.ai p:last-child, .msg.ai ul:last-child, .msg.ai ol:last-child { margin-bottom: 0; }
.msg.ai h3, .msg.ai h4 { color: var(--head); font: 600 17px/1.3 Georgia, serif; margin: 18px 0 8px; }
.msg.ai h3:first-child, .msg.ai h4:first-child { margin-top: 0; }
.msg.ai ul, .msg.ai ol { padding-left: 22px; margin: 0 0 14px; }
.msg.ai hr { border: 0; border-top: 1px solid var(--line); margin: 16px 0; }
.typing { display: inline-flex; gap: 5px; padding: 6px 2px; }
.typing span { width: 7px; height: 7px; border-radius: 50%; background: var(--muted); animation: blink 1.2s infinite ease-in-out; }
.typing span:nth-child(2) { animation-delay: .2s; }
.typing span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 80%, 100% { opacity: .25; } 40% { opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .typing span { animation: none; opacity: .6; } }

.composer { display: flex; gap: 10px; align-items: flex-end; margin-top: 22px; position: sticky; bottom: 0; background: var(--bg); padding: 10px 0 4px; }
.composer textarea { resize: none; max-height: 220px; min-height: 48px; }
.composer .btn { margin: 0; height: 48px; }
.hint { color: var(--muted); font-size: 13px; margin: 6px 0 0; }
.complete { margin-top: 20px; text-align: center; background: var(--accent-soft); }

@media (max-width: 520px) {
  body { font-size: 16px; }
  .card { padding: 22px 18px; }
  h1 { font-size: 24px; }
  .msg { max-width: 94%; padding: 12px 14px; }
}

@media print {
  body { background: #fff; color: #000; font-size: 12pt; }
  .preview-banner, .composer, .hint, .saved, #ready, #complete, .brand-by, #chat-error { display: none !important; }
  .msg { max-width: 100%; border: 0; background: none !important; padding: 6px 0; break-inside: avoid; }
  .msg.user { font-style: italic; }
  .wrap { padding: 0; }
}