:root {
  --bg: #f7f7f8;
  --fg: #1a1a1a;
  --border: #ddd;
  --accent: #2563eb;
  --ok: #16a34a;
  --bad: #dc2626;
  --muted: #6b7280;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.topbar-left { display: flex; align-items: center; gap: 24px; }

.brand { font-weight: 600; text-decoration: none; color: var(--fg); }

nav a {
  margin-right: 16px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}
nav a:hover { color: var(--accent); }

.topbar-right { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--muted); }
.topbar-right a { color: var(--accent); text-decoration: none; }

main { padding: 24px; max-width: 1200px; margin: 0 auto; }

h1 { font-size: 20px; margin-bottom: 16px; }

table.grid {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--border);
}
table.grid th, table.grid td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 13px;
}
table.grid th { background: #fafafa; font-weight: 600; }
tr.row-ok td:nth-child(2) { color: var(--ok); font-weight: 600; }
tr.row-bad td:nth-child(2) { color: var(--bad); font-weight: 600; }

.tabs { margin-bottom: 16px; }
.tab {
  display: inline-block;
  padding: 6px 12px;
  margin-right: 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  text-decoration: none;
  color: var(--muted);
  font-size: 13px;
  background: #fff;
}
.tab-active { color: #fff; background: var(--accent); border-color: var(--accent); }

.log-view {
  background: #0f172a;
  color: #e2e8f0;
  padding: 16px;
  border-radius: 6px;
  overflow-x: auto;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  line-height: 1.5;
  max-height: 75vh;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.lines-form, .search-form { margin-bottom: 14px; display: flex; gap: 10px; align-items: center; }
.lines-form input, .search-form input {
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
}
.lines-form button, .search-form button {
  padding: 6px 12px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  cursor: pointer;
}
.total-count { color: var(--muted); font-size: 13px; margin-left: auto; }

.mono { font-family: monospace; font-size: 12px; }

h2 { font-size: 15px; margin: 24px 0 8px; color: var(--muted); }

.flashes { margin-bottom: 16px; }
.flash { padding: 8px 12px; border-radius: 6px; margin-bottom: 6px; font-size: 13px; }
.flash-ok { background: #dcfce7; color: #166534; }
.flash-error { background: #fee2e2; color: #991b1b; }
.flash-info { background: #e0e7ff; color: #3730a3; }

.static-users { list-style: none; padding: 0; font-size: 13px; }
.static-users li { padding: 4px 0; }
.static-users .muted { color: var(--muted); }

.btn-danger {
  padding: 4px 10px;
  border: 1px solid var(--bad);
  background: #fff;
  color: var(--bad);
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
}
.btn-danger:hover { background: var(--bad); color: #fff; }

.add-user-form { display: flex; gap: 8px; margin-bottom: 8px; }
.add-user-form input {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  min-width: 260px;
}
.add-user-form button {
  padding: 6px 14px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  cursor: pointer;
}

.pager { margin-top: 16px; display: flex; gap: 16px; align-items: center; font-size: 13px; }
.pager a { color: var(--accent); text-decoration: none; }

.login-box {
  max-width: 420px;
  margin: 80px auto;
  text-align: center;
  background: #fff;
  padding: 40px;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.google-btn {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 20px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111318;
    --fg: #e5e7eb;
    --border: #2a2d34;
  }
  body { background: var(--bg); color: var(--fg); }
  .topbar, table.grid, .login-box, .tab { background: #1a1d24; }
  table.grid th { background: #20232b; }
}