:root {
  --bg: #0b1220;
  --card: #141e30;
  --ink: #e8eef8;
  --muted: #9aabbf;
  --accent: #5eead4;
  --accent2: #60a5fa;
  --warn: #fbbf24;
  --line: rgba(255,255,255,.08);
  --danger: #f87171;
  font-family: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(1000px 500px at 10% -10%, #1a2a44, var(--bg));
  color: var(--ink);
  min-height: 100vh;
}
a { color: var(--accent); }
.wrap { max-width: 920px; margin: 0 auto; padding: 20px 16px 64px; }
.banner {
  background: rgba(94,234,212,.08);
  border: 1px solid rgba(94,234,212,.3);
  border-radius: 14px;
  padding: 12px 14px;
  margin-bottom: 16px;
  font-size: .95rem;
  line-height: 1.45;
}
.banner strong { color: var(--accent); }
.tag {
  display: inline-block;
  font-size: .72rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(96,165,250,.18);
  color: #bfdbfe;
  margin-bottom: 10px;
}
.hero h1 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); margin: 0 0 6px; }
.lead { color: var(--muted); line-height: 1.5; margin: 0 0 14px; }
.privacy {
  background: rgba(251,191,36,.08);
  border: 1px solid rgba(251,191,36,.35);
  border-radius: 12px;
  padding: 12px 14px;
  color: var(--muted);
  font-size: .9rem;
  margin-bottom: 16px;
}
.privacy strong { color: var(--warn); }
.chat-shell {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 420px;
}
.chat-log {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
  max-height: 480px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.msg {
  max-width: 85%;
  padding: 10px 12px;
  border-radius: 12px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: .95rem;
}
.msg.user { align-self: flex-end; background: rgba(96,165,250,.2); border: 1px solid rgba(96,165,250,.3); }
.msg.bot { align-self: flex-start; background: rgba(255,255,255,.04); border: 1px solid var(--line); }
.msg.sys { align-self: center; color: var(--muted); font-size: .85rem; background: transparent; border: 0; max-width: 100%; }
.msg.err { align-self: stretch; background: rgba(248,113,113,.1); border: 1px solid rgba(248,113,113,.35); color: #fecaca; }
.composer {
  display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--line); background: rgba(0,0,0,.2);
}
.composer textarea {
  flex: 1; min-height: 48px; max-height: 120px; resize: vertical;
  background: #0d1524; color: var(--ink); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 12px; font: inherit;
}
.btn {
  display: inline-block; padding: 10px 16px; border-radius: 999px;
  background: var(--accent); color: #042f2e; text-decoration: none;
  font-weight: 600; border: 0; cursor: pointer; font: inherit;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.muted { color: var(--muted); }
.small { font-size: .88rem; }
.meta-bar { display: flex; flex-wrap: wrap; gap: 12px; margin: 10px 0 14px; font-size: .85rem; color: var(--muted); }
.meta-bar span strong { color: var(--ink); font-weight: 600; }
.xlog {
  margin-top: 22px; padding: 14px; border-radius: 14px;
  border: 1px solid var(--line); background: rgba(255,255,255,.03);
}
.xlog h2 { margin: 0 0 8px; font-size: 1.1rem; }
.xlog-list { list-style: none; padding: 0; margin: 0; max-height: 220px; overflow-y: auto; }
.xlog-list li {
  padding: 8px 10px; border-radius: 10px; margin-bottom: 6px;
  background: rgba(0,0,0,.2); border: 1px solid var(--line); font-size: .88rem;
}
.xlog-list .kind { color: var(--accent2); font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; }
.notice { margin-top: 14px; padding: 12px 14px; border-radius: 12px; background: rgba(255,255,255,.05); border: 1px solid var(--line); }
label { display: block; margin: 8px 0 4px; font-size: .9rem; color: var(--muted); }
input[type=text], input[type=password] {
  width: 100%; max-width: 360px; padding: 8px 10px; border-radius: 8px;
  border: 1px solid var(--line); background: #0d1524; color: var(--ink); font: inherit;
}
pre.ov { white-space: pre-wrap; font-size: .82rem; background: rgba(0,0,0,.25); padding: 12px; border-radius: 10px; overflow-x: auto; }
.admin-list { list-style: none; padding: 0; }
.admin-list li { padding: 10px 12px; border-radius: 10px; background: var(--card); margin-bottom: 8px; border: 1px solid var(--line); font-size: .88rem; }
.admin-list .row-actions { margin-top: 6px; display: flex; gap: 8px; }
.admin-list button { font-size: .8rem; padding: 4px 10px; }

.model-switch {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  margin: 0 0 12px; font-size: .88rem;
}
.model-switch-label { color: var(--muted); margin-right: 4px; }
.model-btn {
  padding: 6px 14px; border-radius: 999px; cursor: pointer; font: inherit;
  background: transparent; color: var(--ink); border: 1px solid var(--line);
}
.model-btn.active {
  background: rgba(94,234,212,.18); border-color: rgba(94,234,212,.45); color: var(--accent);
  font-weight: 600;
}
.model-btn:focus-visible { outline: 2px solid var(--accent2); outline-offset: 2px; }