:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel-border: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --danger: #ef4444;
  --danger-bg: #450a0a;
  --warning: #f59e0b;
  --success: #10b981;
  --success-bg: #064e3b;
  --code: #fbbf24;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--panel-border);
  background: var(--panel);
}

header h1 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

header .status {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 4px;
  background: #334155;
}

header .status.ok {
  background: var(--success-bg);
  color: var(--success);
}
header .status.err {
  background: var(--danger-bg);
  color: var(--danger);
}
header .status.warn {
  background: #422006;
  color: var(--warning);
}

main {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 16px;
  padding: 16px;
  max-width: 1600px;
  margin: 0 auto;
}

@media (max-width: 1100px) {
  main {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

label {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  color: var(--muted);
}

input[type="text"],
input[type="number"],
select {
  width: 100%;
  padding: 6px 8px;
  background: #0f172a;
  border: 1px solid var(--panel-border);
  border-radius: 4px;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
}

input[type="text"]:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
}

.row {
  display: flex;
  gap: 8px;
}

.row > * {
  flex: 1;
}

.row .narrow {
  flex: 0 0 60px;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text);
  margin-bottom: 8px;
  cursor: pointer;
}

button {
  background: var(--accent);
  color: white;
  border: 0;
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  transition: background 0.1s;
}

button:hover {
  background: var(--accent-hover);
}

button.secondary {
  background: #475569;
}
button.secondary:hover {
  background: #64748b;
}

button.danger {
  background: var(--danger);
}
button.danger:hover {
  background: #dc2626;
}

.scenarios {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.scenarios button {
  padding: 8px;
  font-size: 12px;
  text-align: left;
}

.scenarios .group-label {
  grid-column: 1 / -1;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-top: 6px;
}

.iframe-wrap {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.iframe-toolbar {
  padding: 8px 12px;
  border-bottom: 1px solid var(--panel-border);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

iframe {
  width: 100%;
  height: 720px;
  border: 0;
  background: white;
}

.log {
  background: #0a0f1f;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  padding: 10px 12px;
  height: 280px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
  margin-top: 16px;
}

.log .l-ts {
  color: var(--muted);
}
.log .l-out {
  color: var(--accent);
}
.log .l-in {
  color: var(--success);
}
.log .l-err {
  color: var(--danger);
}
.log .l-warn {
  color: var(--warning);
}
.log .l-info {
  color: var(--muted);
}

.muted {
  color: var(--muted);
  font-size: 12px;
}

.kbd {
  display: inline-block;
  padding: 1px 5px;
  border: 1px solid var(--panel-border);
  border-radius: 3px;
  font-family: ui-monospace, monospace;
  font-size: 11px;
  background: #0f172a;
  color: var(--code);
}

.signing-key-row {
  display: flex;
  gap: 6px;
  align-items: center;
}

.signing-key-row input {
  flex: 1;
  font-family: ui-monospace, monospace;
}

.signing-key-row button {
  flex: 0 0 auto;
  padding: 6px 10px;
}

.divider {
  border-top: 1px solid var(--panel-border);
  margin: 12px 0;
}