.coding-screen-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--surface, #ffffff);
}

/* ── Toolbar ── */
.coding-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-bottom: 1px solid var(--border, #d7e1eb);
  background: var(--surface, #ffffff);
  flex-shrink: 0;
}

.run-btn {
  margin-left: auto;
  padding: 4px 13px;
  background: var(--bg, #f1f5f9);
  color: var(--text, #0f172a);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  flex-shrink: 0;
}

.run-btn:hover    { background: var(--surface, #ffffff); border-color: var(--text-muted, #94a3b8); }
.run-btn:disabled { background: #93c5fd; cursor: not-allowed; }

/* ── Editor ── */
.code-editor-area {
  flex: 1;
  overflow: hidden;
  position: relative;
  min-height: 0;
}

.code-editor {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 12px 14px;
  box-sizing: border-box;
  font-family: var(--code-font, "JetBrains Mono", "Courier New", monospace);
  font-size: 0.85rem;
  line-height: 1.65;
  border: none;
  outline: none;
  resize: none;
  background: var(--code-bg, #f8fafc);
  color: var(--text, #102040);
  tab-size: 4;
  -moz-tab-size: 4;
}

.code-editor::placeholder {
  color: var(--text-muted, #425366);
  opacity: 0.45;
}