:root {
  --bg: #0f172a;
  --panel-bg: #1e293b;
  --panel-border: #334155;
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-hover: #0284c7;
  --pass: #10b981;
  --fail: #ef4444;
  --warn: #f59e0b;
  --code-bg: #0b1120;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

header.topbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px 22px;
  background: #0b1120;
  border-bottom: 1px solid var(--panel-border);
}

header.topbar h1 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
}

header.topbar .subtitle {
  font-size: 0.85rem;
  color: var(--muted);
}

.layout-grid {
  display: grid;
  grid-template-columns: 380px 1fr 410px;
  gap: 14px;
  padding: 14px;
  min-height: calc(100vh - 64px);
}

@media (max-width: 1280px) {
  .layout-grid {
    grid-template-columns: 1fr;
  }
}

.col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 14px 16px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.panel h2 {
  margin: 0 0 10px 0;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--accent);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.field-row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}

.field-row label {
  font-size: 0.8rem;
  color: var(--muted);
  min-width: 95px;
}

input[type="text"],
input[type="number"],
select,
textarea {
  width: 100%;
  background: var(--code-bg);
  color: var(--text);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 6px 9px;
  font-size: 0.84rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

textarea {
  min-height: 110px;
  resize: vertical;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

button {
  background: #2563eb;
  color: #fff;
  border: 1px solid #3b82f6;
  border-radius: 6px;
  padding: 7px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

button:hover {
  background: #1d4ed8;
}

button.primary-cta {
  background: linear-gradient(135deg, #059669, #0284c7);
  border-color: #10b981;
  width: 100%;
  padding: 10px 14px;
  font-size: 0.9rem;
}

button.secondary {
  background: #334155;
  border-color: #475569;
}

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

button.warn {
  background: #b45309;
  border-color: #f59e0b;
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 12px;
}

.status-card {
  background: var(--code-bg);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 10px 12px;
}

.status-card .label {
  font-size: 0.74rem;
  color: var(--muted);
  font-family: ui-monospace, monospace;
}

.status-badge {
  display: inline-block;
  margin-top: 4px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  font-family: ui-monospace, monospace;
  background: #334155;
  color: #f8fafc;
}

.status-badge.pass {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid #10b981;
}

.status-badge.fail {
  background: rgba(239, 68, 68, 0.22);
  color: #f87171;
  border: 1px solid #ef4444;
}

.status-badge.warn {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border: 1px solid #f59e0b;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 8px;
}

.tab-btn {
  background: var(--code-bg);
  border: 1px solid var(--panel-border);
  color: var(--muted);
  padding: 5px 11px;
  font-size: 0.8rem;
}

.tab-btn.active {
  background: #0284c7;
  color: #fff;
  border-color: #38bdf8;
}

.canvas {
  background: #0b1120;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px;
  overflow: auto;
}

.canvas svg {
  max-width: 100%;
  height: auto;
  background: #ffffff;
  border-radius: 6px;
}

.canvas svg.interactive-plan {
  background: #0f172a;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
  margin-top: 6px;
}

table.data-table th,
table.data-table td {
  border-bottom: 1px solid var(--panel-border);
  padding: 5px 7px;
  text-align: left;
  font-family: ui-monospace, monospace;
}

table.data-table th {
  color: var(--muted);
  font-weight: 600;
}

.mono-box {
  background: var(--code-bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 8px 10px;
  font-family: ui-monospace, monospace;
  font-size: 0.76rem;
  max-height: 210px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.pill {
  font-size: 0.72rem;
  padding: 2px 7px;
  border-radius: 4px;
  background: #334155;
  color: var(--accent);
  font-family: ui-monospace, monospace;
}