:root {
  color-scheme: dark;
  --bg: #0d1117;
  --card: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #2f81f7;
  --ok: #3fb950;
  --error: #f85149;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 1.5rem;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 ui-sans-serif, system-ui, -apple-system, sans-serif;
}

header {
  max-width: 900px;
  margin: 0 auto 1.5rem;
}

h1 {
  margin: 0 0 0.25rem;
}

h2 {
  margin-top: 0;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

a {
  color: var(--accent);
}

main {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 1rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
}

.hint {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0.35rem 0;
}

.error {
  color: var(--error);
  font-size: 0.9rem;
  margin: 0.5rem 0;
  overflow-wrap: anywhere;
}

.alert {
  background: #3d2b00;
  border: 1px solid #9e6a03;
  color: #f0d58c;
  border-radius: 8px;
  padding: 0.7rem 1rem;
  margin: 0;
  font-size: 0.92rem;
}

.alert b {
  color: #ffd97d;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

button {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 6px;
  padding: 0.45rem 0.9rem;
  font-size: 0.95rem;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.1);
}

button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

input {
  flex: 1 1 24rem;
  min-width: 12rem;
  background: #0d1117;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.45rem 0.6rem;
  font-family: ui-monospace, monospace;
}

code {
  font-family: ui-monospace, monospace;
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem 0.5rem;
  word-break: break-all;
}

#peer-list .peer {
  font-family: ui-monospace, monospace;
  font-size: 0.85rem;
  word-break: break-all;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 0.2rem 0;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-weight: 500;
  width: 12rem;
}

td {
  font-family: ui-monospace, monospace;
}

.log {
  max-height: 14rem;
  overflow-y: auto;
  font-family: ui-monospace, monospace;
  font-size: 0.82rem;
  color: var(--muted);
}

.log .ok {
  color: var(--ok);
}

.log .error {
  color: var(--error);
}

.diag {
  margin: 0.6rem 0 0;
  max-height: 16rem;
  overflow: auto;
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.6rem;
  font-size: 0.78rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}