:root {
  --tenk-blue: #1f4e8c;
  --tenk-blue-dark: #163c6e;
  --bg: #f5f7fa;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #667085;
  --ok: #067647;
  --err: #b42318;
  --border: #e4e7ec;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
}

body {
  padding: env(safe-area-inset-top) env(safe-area-inset-right)
    calc(16px + env(safe-area-inset-bottom)) env(safe-area-inset-left);
}

header {
  background: var(--tenk-blue);
  color: #fff;
  padding: 14px 16px;
  margin: 0 0 12px;
}

h1 { font-size: 18px; margin: 0 0 4px; }
h2 { font-size: 14px; margin: 0 0 8px; color: var(--tenk-blue-dark); }

.env { font-size: 12px; opacity: 0.9; word-break: break-all; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin: 0 12px 12px;
  padding: 12px 14px;
  font-size: 14px;
  word-break: break-word;
}

.btn-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.btn-row { display: flex; gap: 8px; margin-bottom: 8px; }

button {
  appearance: none;
  border: none;
  border-radius: 8px;
  background: var(--tenk-blue);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 10px;
  min-height: 44px;
  cursor: pointer;
}
button:active { background: var(--tenk-blue-dark); }
button.warn { background: #fff; color: var(--err); border: 1px solid var(--err); }
button.small { min-height: 36px; padding: 6px 12px; font-size: 13px; }

.hint { font-weight: 400; font-size: 11px; color: var(--muted); }

.ok { color: var(--ok); font-weight: 600; }
.err { color: var(--err); font-weight: 600; }

#log {
  margin: 0;
  padding: 10px;
  background: #0f172a;
  color: #d7e3f4;
  border-radius: 8px;
  font-family: ui-monospace, Menlo, monospace;
  font-size: 11px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 45vh;
  overflow-y: auto;
}

dl { margin: 0; }
dt { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.03em; }
dd { margin: 0 0 8px; }