:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #dbe3ee;
  --accent: #2563eb;
  --ok: #166534;
  --warn: #92400e;
  --err: #b91c1c;
  --console: #0b1220;
  --console-text: #d1e5ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Avenir Next", "Segoe UI", "Inter", sans-serif;
  background: linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
}

.topbar {
  width: min(1280px, 96vw);
  margin: 1rem auto 0;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.brand {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}

.tagline {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

button.tool {
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 0.5rem 0.85rem;
  background: #fff;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
}

button.tool.primary {
  background: var(--accent);
  border-color: #1d4ed8;
  color: #fff;
}

button.tool:hover {
  filter: brightness(0.98);
}

.layout {
  width: min(1280px, 96vw);
  margin: 0.8rem auto 1rem;
  display: grid;
  grid-template-columns: minmax(0, 2.15fr) minmax(280px, 0.85fr);
  gap: 1rem;
}

.panel {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.04);
}

.panel-editor {
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
}

#editor {
  width: 100%;
  height: min(70vh, 760px);
  border-radius: 10px;
  border: 1px solid var(--border);
}

.status {
  margin-top: 0.6rem;
  font-size: 0.92rem;
  font-weight: 700;
}

.status-ok {
  color: var(--ok);
}

.status-busy {
  color: var(--warn);
}

.status-error {
  color: var(--err);
}

.panel-side {
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem;
  background: #fff;
}

.card h2 {
  margin: 0 0 0.5rem;
  font-size: 0.96rem;
  letter-spacing: 0.01em;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.87rem;
}

.robot-status {
  margin: 0 0 0.35rem;
  font-weight: 700;
  color: var(--warn);
}

ul {
  margin: 0;
  padding-left: 1.1rem;
}

li {
  margin: 0.35rem 0;
}

code {
  font-family: "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 0.84rem;
}

.console-card {
  display: flex;
  flex-direction: column;
  min-height: 280px;
}

pre {
  margin: 0;
  flex: 1;
  overflow: auto;
  border-radius: 8px;
  border: 1px solid #1f2937;
  background: var(--console);
  color: var(--console-text);
  padding: 0.65rem;
  font-size: 0.84rem;
}

.ace_error-line {
  position: absolute;
  background: rgba(248, 113, 113, 0.22);
}

@media (max-width: 980px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  #editor {
    height: 56vh;
  }
}