:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --ink: #20262d;
  --muted: #6d7782;
  --border: #d7dde3;
  --accent: #005a7a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at 15% 0%, #dfeef3 0%, var(--bg) 55%);
  color: var(--ink);
  font-family: "IBM Plex Sans", "Noto Sans Arabic", sans-serif;
}

.layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  gap: 14px;
}

.header h1 {
  margin: 0;
  font-size: 1.5rem;
}

.header p {
  margin: 4px 0 0;
  color: var(--muted);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: end;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
}

.toolbar label {
  display: grid;
  gap: 4px;
  font-size: 0.85rem;
}

input,
select,
button,
textarea {
  font: inherit;
}

input,
select {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 8px;
  min-width: 180px;
}

button {
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  padding: 7px 10px;
  cursor: pointer;
}

button:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.editor textarea {
  width: 100%;
  min-height: 300px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fcfcfd;
  padding: 10px;
  font-family: "IBM Plex Mono", "Noto Sans Arabic", monospace;
  line-height: 1.4;
}

.panels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.panels article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  min-height: 220px;
}

.panels h2 {
  margin: 0;
  font-size: 0.9rem;
  padding: 10px;
  border-bottom: 1px solid var(--border);
}

.panels pre {
  margin: 0;
  padding: 10px;
  max-height: 300px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: "IBM Plex Mono", "Noto Sans Arabic", monospace;
}

@media (max-width: 900px) {
  .panels {
    grid-template-columns: 1fr;
  }
}