:root {
  --navy: #1f3a5f;
  --navy-d: #16293f;
  --gold: #c8a45c;
  --bg: #f4f6f9;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e2e8f0;
  --danger: #b42318;
  --ok: #067647;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.view { min-height: 100vh; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(31, 58, 95, 0.08);
}
.auth-card {
  max-width: 380px;
  margin: 8vh auto;
  padding: 28px 26px;
}
.auth-card h1 { font-size: 19px; margin: 0 0 4px; color: var(--navy); }
.sub { color: var(--muted); font-size: 13px; margin: 0 0 18px; }
.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tab {
  flex: 1; padding: 8px; border: 1px solid var(--line); background: #fff;
  border-radius: 8px; cursor: pointer; color: var(--muted);
}
.tab.active { background: var(--navy); color: #fff; border-color: var(--navy); }
.auth-form { display: flex; flex-direction: column; gap: 10px; }
input, textarea, select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line);
  border-radius: 8px; font-size: 14px; font-family: inherit;
}
textarea { resize: vertical; }
.btn {
  padding: 10px 14px; border: none; border-radius: 8px; cursor: pointer;
  font-size: 14px; background: var(--navy); color: #fff;
}
.btn.primary { background: var(--navy); }
.btn.primary:hover { background: var(--navy-d); }
.btn.small { padding: 6px 10px; font-size: 12px; background: #fff; color: var(--navy); border: 1px solid var(--navy); }
.hint { font-size: 12px; color: var(--muted); margin: 4px 0; }
.msg { font-size: 13px; min-height: 18px; }
.msg.err { color: var(--danger); }
.msg.ok { color: var(--ok); }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 20px; background: var(--navy); color: #fff;
}
.brand { font-weight: 600; font-size: 15px; }
.topbar nav { display: flex; gap: 6px; flex-wrap: wrap; }
.nav-btn {
  background: transparent; border: 1px solid rgba(255,255,255,0.3); color: #fff;
  padding: 6px 12px; border-radius: 8px; cursor: pointer; font-size: 13px;
  text-decoration: none; display: inline-block;
}
.nav-btn.active { background: var(--gold); color: var(--navy-d); border-color: var(--gold); }
.content { max-width: 860px; margin: 20px auto; padding: 0 16px; }
.panel {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 18px; display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px;
}
.panel label { font-size: 13px; color: var(--muted); margin-top: 6px; }
.panel h3 { margin: 0 0 4px; color: var(--navy); }
.req { color: var(--danger); }
.report-box {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 16px; margin-top: 14px;
}
.report-actions { display: flex; gap: 8px; margin-bottom: 8px; }
#chat-text {
  white-space: pre-wrap; word-break: break-word; font-family: "PingFang SC", monospace;
  font-size: 13px; line-height: 1.7; margin: 0; max-height: 60vh; overflow: auto;
}
.reports-list { display: flex; flex-direction: column; gap: 10px; }
.report-item {
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 14px; display: flex; justify-content: space-between; align-items: center;
}
.report-item .t { font-weight: 500; }
.report-item .d { font-size: 12px; color: var(--muted); }
.report-item .acts { display: flex; gap: 6px; }
@media (max-width: 600px) {
  .topbar { flex-direction: column; gap: 8px; align-items: flex-start; }
}