:root {
  --bg: #111;
  --surface: #1a1a1a;
  --surface-2: #151515;
  --border: #2a2a2a;
  --text: #e0e0e0;
  --muted: #666;
  --accent: #66bb6a;
  --accent-rgb: 102, 187, 106;
  --warn: #ffa726;
  --danger: #ef5350;
  --radius: 12px;
  font-family: "Courier New", monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.chrome {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.traffic {
  display: flex;
  gap: 6px;
}

.traffic span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: block;
}

.t-red { background: var(--danger); }
.t-amber { background: var(--warn); }
.t-green { background: var(--accent); }

.chrome-title {
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--accent);
}

.session-badge {
  margin-left: auto;
  font-size: 10px;
  color: var(--muted);
}

.main {
  flex: 1;
  display: grid;
  grid-template-columns: 220px 1fr 300px;
  overflow: hidden;
}

.panel {
  border-right: 1px solid var(--border);
  padding: 22px 16px;
  overflow-y: auto;
}

.right-panel {
  border-right: none;
  border-left: 1px solid var(--border);
}

.panel-kicker,
.step-tag,
.field-label,
.result-label {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
}

.step-list {
  list-style: none;
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.step-item {
  display: flex;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.02);
}

.step-item.is-active {
  border-color: rgba(var(--accent-rgb), 0.55);
}

.step-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 6px;
  flex-shrink: 0;
}

.step-label {
  font-size: 12px;
}

.step-note {
  margin-top: 4px;
  font-size: 10px;
  color: var(--muted);
  line-height: 1.5;
}

.center-panel {
  padding: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-card {
  width: min(760px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: grid;
  gap: 20px;
  box-shadow: 0 0 40px rgba(var(--accent-rgb), 0.08);
}

.action-label {
  font-size: 28px;
  line-height: 1.2;
  color: var(--accent);
}

.prompt-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
  border-left: 3px solid rgba(var(--accent-rgb), 0.5);
  padding-left: 14px;
}

.truth-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.truth-summary-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-2);
  padding: 14px;
  display: grid;
  gap: 8px;
}

.truth-summary-card p:last-child {
  font-size: 12px;
  line-height: 1.7;
  color: var(--text);
}

.form-section {
  display: grid;
  gap: 14px;
}

.truth-box {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255,255,255,0.02);
  padding: 14px;
  display: grid;
  gap: 12px;
}

.truth-banner {
  font-size: 12px;
  line-height: 1.6;
  color: var(--text);
}

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

.truth-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  background: var(--surface-2);
  display: grid;
  gap: 6px;
}

.truth-item span {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.truth-item strong {
  font-size: 12px;
  color: var(--text);
}

.truth-notes {
  padding-left: 18px;
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}

.field-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.field-help {
  margin-top: 6px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}

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

.field {
  display: grid;
  gap: 8px;
}

.input,
.select {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  padding: 12px;
  outline: none;
}

.input:focus,
.select:focus {
  border-color: rgba(var(--accent-rgb), 0.55);
}

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

.device-check,
.verify-check {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255,255,255,0.02);
  font-size: 12px;
}

.verify-check {
  font-size: 11px;
  line-height: 1.6;
}

.btn-row {
  display: flex;
  gap: 10px;
}

.btn {
  flex: 1;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  padding: 12px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.btn:hover {
  border-color: rgba(var(--accent-rgb), 0.45);
}

.btn.primary {
  background: rgba(var(--accent-rgb), 0.18);
  border-color: rgba(var(--accent-rgb), 0.6);
  color: var(--accent);
  font-weight: bold;
}

.result-empty {
  margin-top: 16px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
}

.result-content {
  margin-top: 16px;
  display: grid;
  gap: 14px;
}

.hidden { display: none; }

.result-block {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255,255,255,0.02);
}

.result-main {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--accent);
}

.result-main.small {
  color: var(--text);
  font-size: 12px;
}

.result-list {
  margin-top: 8px;
  padding-left: 18px;
  display: grid;
  gap: 6px;
  color: var(--text);
  font-size: 12px;
  line-height: 1.6;
}

.footer {
  border-top: 1px solid var(--border);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 11px;
  color: var(--muted);
}

@media (max-width: 980px) {
  .main {
    grid-template-columns: 1fr;
  }

  .panel,
  .right-panel {
    border: none;
    border-bottom: 1px solid var(--border);
  }

  .center-panel {
    padding: 18px;
  }
}

@media (max-width: 640px) {
  .truth-summary,
  .field-grid,
  .device-grid,
  .truth-grid,
  .btn-row {
    grid-template-columns: 1fr;
    display: grid;
  }

  .field-row {
    flex-direction: column;
    align-items: stretch;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}