:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel-2: #1c2230;
  --border: #2a3140;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #2f81f7;
  --accent-2: #238636;
  --chip: #21262d;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.45;
}
a { color: var(--accent); text-decoration: none; }
header.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 10;
}
header.topbar h1 { font-size: 18px; margin: 0; }
header.topbar .logo span { color: var(--accent); }
.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 18px;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 18px;
}
@media (max-width: 820px) {
  .wrap { grid-template-columns: 1fr; }
}
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}
.panel h2 { font-size: 14px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin: 0 0 10px; }
input[type="text"], input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 15px;
}
input::placeholder { color: var(--muted); }
button {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
}
button.green { background: var(--accent-2); }
button.ghost { background: var(--chip); color: var(--text); border: 1px solid var(--border); }
button:disabled { opacity: .5; cursor: default; }
.row { display: flex; gap: 8px; }
.row > input { flex: 1; }
.btns { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.meta { color: var(--muted); font-size: 13px; margin: 6px 0 0; }

.history-item {
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  background: var(--panel-2);
}
.history-item:hover { border-color: var(--accent); }
.history-item .seed { font-weight: 600; }
.history-item .sub { color: var(--muted); font-size: 12px; display: flex; justify-content: space-between; margin-top: 2px; }
.history-item .matches { color: var(--accent); font-size: 12px; margin-top: 4px; }
.history-item .matches span { display: inline-block; background: var(--chip); padding: 1px 6px; border-radius: 4px; margin: 2px 3px 0 0; }

.groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.group h3 { font-size: 14px; margin: 0 0 8px; display: flex; justify-content: space-between; }
.group h3 .count { color: var(--muted); font-weight: 400; }
.group ul { list-style: none; margin: 0; padding: 0; max-height: 360px; overflow: auto; }
.group li { padding: 5px 8px; border-bottom: 1px solid var(--border); font-size: 14px; }
.group li:hover { background: var(--panel-2); }

.empty { color: var(--muted); padding: 20px; text-align: center; }
.spinner { color: var(--muted); padding: 20px; text-align: center; }
.totals { font-size: 16px; margin: 0 0 14px; }
.totals b { color: var(--accent); }

/* login */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  width: 100%;
  max-width: 360px;
}
.login-card h1 { margin: 0 0 4px; font-size: 22px; }
.login-card h1 span { color: var(--accent); }
.login-card p { color: var(--muted); margin: 0 0 18px; font-size: 14px; }
.login-card button { width: 100%; margin-top: 12px; }
.error { color: #f85149; font-size: 13px; margin-top: 10px; }