:root {
  --bg: #f4f4f4;
  --panel: #ffffff;
  --text: #111111;
  --muted: #666666;
  --line: #dddddd;
  --soft: #eeeeee;
  --danger-bg: #fff7f7;
  --danger-line: #e0b8b8;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body { min-height: 100vh; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 16px;
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--line);
}

h1, h2, p { margin-top: 0; }

h1 {
  font-size: 20px;
  margin-bottom: 2px;
  letter-spacing: 0.02em;
}

h2 {
  font-size: 16px;
  margin-bottom: 12px;
}

.subtitle, .note, footer p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
  margin-bottom: 0;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 14px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 14px;
}

.dangerPanel {
  background: var(--danger-bg);
  border-color: var(--danger-line);
}

.buttonRow {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 10px 0;
}

.gridButtons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

button {
  border: 1px solid #cfcfcf;
  background: #f8f8f8;
  color: #111;
  border-radius: 9px;
  padding: 10px 12px;
  font-size: 14px;
  min-height: 42px;
}

button.primary {
  background: #111111;
  border-color: #111111;
  color: #ffffff;
}

button:disabled {
  opacity: 0.42;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.badge.ok {
  color: #0b4f20;
  border-color: #95c59d;
  background: #edf8ef;
}

.badge.bad {
  color: #7a1f1f;
  border-color: #d7a0a0;
  background: #fff3f3;
}

.statusGrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 10px 0 0;
}

.statusGrid div {
  padding: 10px;
  background: var(--soft);
  border-radius: 9px;
}

dt {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 4px;
}

dd {
  margin: 0;
  overflow-wrap: anywhere;
  font-size: 14px;
}

.monoBox, .logBox {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background: #111;
  color: #f3f3f3;
  border-radius: 9px;
  padding: 12px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.monoBox.small { font-size: 12px; }

.logBox {
  min-height: 240px;
  max-height: 50vh;
  font-size: 12px;
}

.checkLine {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 12px;
  font-size: 14px;
}

footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 14px 24px;
}

@media (max-width: 520px) {
  .statusGrid { grid-template-columns: 1fr; }
  .gridButtons { grid-template-columns: 1fr; }
  .topbar { align-items: flex-start; }
}