```css
/* css/ui.css */

/* ---------- Reset / base ---------- */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: #0b0c10;
  color: #e8eaed;
  line-height: 1.35;
}

a { color: inherit; }
::selection { background: rgba(255,255,255,0.12); }


/* ---------- Layout ---------- */
:root {
  --panel: #12131a;
  --panel-2: #0f1016;
  --stroke: rgba(255,255,255,0.10);
  --stroke-2: rgba(255,255,255,0.16);
  --text-dim: rgba(232,234,237,0.72);
  --shadow: 0 18px 50px rgba(0,0,0,0.45);
  --radius: 16px;
  --radius-sm: 12px;
  --pad: 16px;
  --pad-lg: 20px;
}

body {
  padding: 22px;
}

h1 {
  margin: 0 0 14px 0;
  font-size: 20px;
  letter-spacing: 0.2px;
  font-weight: 700;
}

h2 {
  margin: 0 0 10px 0;
  font-size: 14px;
  font-weight: 650;
  letter-spacing: 0.15px;
  color: rgba(232,234,237,0.92);
}

section {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: var(--pad-lg);
  margin: 14px 0;
  box-shadow: var(--shadow);
}

section:first-of-type {
  margin-top: 10px;
}

/* ---------- Controls ---------- */
input, textarea, button {
  font: inherit;
}

input, textarea {
  width: 100%;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--stroke);
  color: #e8eaed;
  border-radius: var(--radius-sm);
  padding: 0px;
  outline: none;
  transition: border-color 140ms ease, background 140ms ease, box-shadow 140ms ease;
}

input::placeholder, textarea::placeholder {
  color: rgba(232,234,237,0.40);
  padding: 10px;
}

input:focus, textarea:focus {
  border-color: rgba(255,255,255,0.22);
  background: rgba(255,255,255,0.05);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.06);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

#output {
  min-height: 340px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
               "Liberation Mono", "Courier New", monospace;
  font-size: 12.5px;
  line-height: 1.45;
}

/* ---------- Buttons ---------- */
button {
  appearance: none;
  border: 1px solid var(--stroke-2);
  background: rgba(255,255,255,0.06);
  color: #e8eaed;
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease, opacity 120ms ease;
}

button:hover {
  background: rgba(255,255,255,0.09);
  border-color: rgba(255,255,255,0.22);
}

button:active {
  transform: translateY(1px);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* Make the "primary" action look slightly stronger:
   (targets your existing build button by id) */
#build {
  background: rgba(255,255,255,0.10);
  border-color: rgba(255,255,255,0.26);
}

#build:hover {
  background: rgba(255,255,255,0.14);
}

/* ---------- Spacing inside sections ---------- */
section > input,
section > textarea,
section > button,
section > div {
  margin-top: 10px;
}

/* ---------- Blogs preview ---------- */
#blogsPreview {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

#blogsPreview > div {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--stroke);
  border-radius: 14px;
  padding: 12px;
}

#blogsPreview img {
  border: 1px solid rgba(255,255,255,0.12);
}

#blogsPreview a {
  text-decoration: none;
}

#blogsPreview a:hover strong {
  text-decoration: underline;
}

#blogsPreview small {
  color: var(--text-dim);
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  body { padding: 14px; }
  section { padding: 14px; border-radius: 14px; }
  h1 { font-size: 18px; }
  textarea { min-height: 130px; }
}

/* ---------- Optional: subtle page frame ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 500px at 20% 10%, rgba(255,255,255,0.06), transparent 55%),
    radial-gradient(700px 450px at 85% 20%, rgba(255,255,255,0.05), transparent 55%),
    radial-gradient(900px 700px at 60% 90%, rgba(255,255,255,0.04), transparent 60%);
  opacity: 1;
}
```