:root {
  --primary: #E85A4F;
  --primary-press: #cf4a3f;
  --primary-soft: #FDEFEE;
  --ink: #18120f;
  --text: #3a312c;
  --muted: #6f6258;
  --line: #EEEEEE;
  --surface: #ffffff;
  --bg: #fffdf9;
  --link: #cf4a3f;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
  position: sticky; top: 0; z-index: 2;
}
header .wrap {
  max-width: 820px; margin: 0 auto; padding: 0 16px;
  display: flex; align-items: center; gap: 14px;
}
.logo { height: 40px; width: auto; }
header h1 { font-size: 1.05rem; color: var(--ink); margin: 0; }
header .sub { font-size: .78rem; color: var(--muted); margin: 2px 0 0; }
main {
  flex: 1;
  max-width: 820px; width: 100%; margin: 0 auto;
  padding: 20px 16px 12px;
  display: flex; flex-direction: column; gap: 14px;
}
#log {
  flex: 1;
  max-height: 56vh; min-height: 300px;
  overflow-y: auto;
  display: flex; flex-direction: column; gap: 12px;
  padding: 4px 2px;
}
.msg {
  max-width: 78%;
  padding: 12px 16px;
  border-radius: 16px;
  line-height: 1.5;
  font-size: .95rem;
  word-break: break-word;
}
.bot {
  background: var(--surface);
  border: 1px solid var(--line);
  border-bottom-left-radius: 6px;
  box-shadow: 0 1px 3px rgba(24, 18, 15, .05);
  align-self: flex-start;
}
.user {
  background: var(--primary);
  color: #fff;
  border-bottom-right-radius: 6px;
  align-self: flex-end;
  box-shadow: 0 4px 14px rgba(232, 90, 79, .25);
}
.msg a { color: var(--link); word-break: break-all; }
.user a { color: #fff; text-decoration: underline; }
.disclaimer {
  font-size: .72rem; color: var(--muted);
  margin-top: 10px; padding-top: 8px;
  border-top: 1px solid var(--line);
}
.suggest { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--text); font-size: .82rem;
  padding: 8px 14px; border-radius: 999px;
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
}
.chip:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }
form {
  display: flex; gap: 4px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 6px 6px 20px;
  box-shadow: 0 4px 16px rgba(24, 18, 15, .07);
}
input {
  flex: 1; border: 0; outline: none; background: transparent;
  font-size: .95rem; color: var(--ink); padding: 10px 0;
}
button {
  border: 0; border-radius: 999px;
  background: var(--primary); color: #fff;
  padding: 12px 26px; font-size: .92rem; font-weight: 600;
  cursor: pointer;
  transition: background .15s ease;
}
button:hover { background: var(--primary-press); }
.sources { color: var(--muted); font-size: .76rem; word-break: break-all; }
.sources a { color: var(--muted); }