:root {
  --bg: #0f1115;
  --panel: #1a1d24;
  --border: #2b303b;
  --text: #e6e8ec;
  --muted: #9aa3b2;
  --accent: #4c8bf5;
  --ok: #2ecc71;
  --fail: #ff5c5c;
  --pending: #f5c14c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

h1 { margin: 0 0 4px; font-size: 18px; }
h2 { margin: 0 0 12px; font-size: 14px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.sub { margin: 0; color: var(--muted); max-width: 70ch; }
code { background: #000; padding: 1px 5px; border-radius: 4px; }

main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 16px 24px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.grid .wide { grid-column: 1 / -1; }
.grid .check { grid-column: 1 / -1; display: flex; align-items: center; gap: 8px; color: var(--muted); }
.grid .note { margin: -4px 0 4px; color: var(--muted); font-size: 12px; }

label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
input[type="text"] {
  background: #0b0d11;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 8px 10px;
  font: inherit;
}

.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
button {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 6px;
  padding: 9px 14px;
  font: inherit;
  cursor: pointer;
}
button.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }

.result, .log {
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  min-height: 60px;
  max-height: 260px;
  overflow: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
}
.result.ok { color: var(--ok); }
.result.fail { color: var(--fail); }
.result.pending { color: var(--pending); }

iframe {
  width: 100%;
  height: 520px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.diag .drow { display: flex; gap: 10px; padding: 4px 0; border-bottom: 1px solid var(--border); }
.diag .dk { color: var(--muted); min-width: 150px; }
.diag .dv { word-break: break-all; }

body.callback { padding: 24px; }
#out { white-space: pre-wrap; font-family: ui-monospace, monospace; }
#out.ok { color: var(--ok); }
#out.fail { color: var(--fail); }