:root {
  --bg: #0f1115;
  --panel: #171a21;
  --text: #e7e9ee;
  --muted: #9aa3b2;
  --accent: #4c8dff;
  --ok: #2ecc71;
  --border: #262b36;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

.topbar {
  display: flex;
  align-items: center;
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.brand {
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
  letter-spacing: 0.2px;
}

.tag {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
  margin-left: 0.4rem;
  vertical-align: middle;
}

.container {
  flex: 1;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.25rem;
}

.hero h1 { margin: 0 0 0.25rem; font-size: 1.8rem; }

.muted { color: var(--muted); }

.btn {
  appearance: none;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  padding: 0.55rem 1rem;
  margin-top: 1rem;
}
.btn:hover { filter: brightness(1.08); }

.input {
  display: block;
  width: 100%;
  max-width: 320px;
  margin: 0.4rem 0;
  padding: 0.5rem 0.6rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0c0e13;
  color: var(--text);
  font: inherit;
}
.error { color: #ff6b6b; }

.ping-out { margin-top: 0.9rem; min-height: 1.25rem; }
.ok { color: var(--ok); font-weight: 600; }

.footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border);
  background: var(--panel);
  font-size: 0.85rem;
}