/* Навчальний сайт — нейтральний «внутрішній портал», візуально окремий від лабораторії. */
* { box-sizing: border-box; }
body { margin: 0; background: #f3f4f6; color: #1f2937; font: 15px/1.55 system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif; }
.lab-banner { background: #111827; color: #d1d5db; font: 12px/1.4 ui-monospace, Consolas, monospace; padding: 6px 14px; }
.lab-head { background: #fff; border-bottom: 1px solid #e5e7eb; padding: 12px 20px; }
.lab-logo { font-weight: 700; color: #374151; }
.lab-main { padding: 0; }
.lab-card { max-width: 760px; margin: 22px auto; background: #fff; border: 1px solid #e5e7eb; border-radius: 8px; padding: 22px 26px; }
.lab-card h1 { font-size: 22px; margin: 0 0 6px; }
.lab-card h2 { font-size: 15px; margin: 20px 0 6px; color: #374151; }
.lab-row { display: flex; align-items: center; gap: 10px; justify-content: space-between; flex-wrap: wrap; }
.lab-muted { color: #6b7280; }
.lab-list { list-style: none; padding: 0; margin: 10px 0 0; }
.lab-list li { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid #f0f1f3; }
.lab-tag { font-size: 12px; color: #4b5563; background: #f3f4f6; border-radius: 999px; padding: 1px 8px; }
button, select { font: inherit; padding: 7px 14px; border-radius: 6px; border: 1px solid #d1d5db; background: #fff; cursor: pointer; }
button:hover { background: #f9fafb; }
button.primary { background: #2563eb; color: #fff; border-color: #2563eb; }
input, textarea { font: inherit; width: 100%; padding: 8px 10px; border: 1px solid #d1d5db; border-radius: 6px; margin: 4px 0 12px; }
label { font-size: 13px; color: #374151; }
.lab-doc table { border-collapse: collapse; width: 100%; margin: 8px 0 14px; }
.lab-doc th, .lab-doc td { border-bottom: 1px solid #e5e7eb; padding: 6px 8px; text-align: left; font-size: 14px; }
.lab-doc pre, .lab-doc code { font: 13px/1.5 ui-monospace, Consolas, monospace; background: #f3f4f6; border-radius: 4px; }
.lab-doc pre { padding: 10px 12px; overflow: auto; white-space: pre-wrap; word-break: break-all; }
.lab-doc code { padding: 1px 4px; word-break: break-all; }
.lab-badge { display: inline-block; font-size: 12px; background: #fef3c7; color: #92400e; border-radius: 999px; padding: 2px 10px; }
.lab-down { max-width: 560px; margin: 60px auto; text-align: center; }
.lab-down h1 { font-size: 64px; margin: 0; color: #9ca3af; }
[hidden] { display: none !important; }