/* ============================================================
   BANNER
   ============================================================ */
.banner {
  width: 100%;
  aspect-ratio: 21/8;
  position: relative;
  overflow: hidden;
  background: var(--rule);
}

.banner__slides {
  display: flex;
  height: 100%;
  transition: transform 0.55s cubic-bezier(0.16, 1, 0.3, 1);
}

.banner__slide {
  min-width: 100%;
  height: 100%;
  position: relative;
}

.banner__slide img { width: 100%; height: 100%; object-fit: cover; }

.banner__fallback {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: var(--text-tertiary);
}

.banner__dots {
  position: absolute;
  bottom: 1rem; left: 50%;
  transform: translateX(-50%);
  display: flex; gap: 5px;
}

.banner__dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: rgba(255,255,255,0.45);
  cursor: pointer;
  border: none;
  transition: background 0.2s, transform 0.2s;
}

.banner__dot.active { background: #fff; transform: scale(1.3); }

/* ============================================================
   PROJECT HEADER
   ============================================================ */
.proj-header {
  padding: 3rem 0 2.5rem;
  border-bottom: 1px solid var(--rule);
}

.back-link {
  display: inline-block;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  margin-bottom: 1.5rem;
  transition: color 0.15s;
}
.back-link:hover { color: var(--text-primary); }

.proj-meta {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 0.75rem;
}

/* ============================================================
   WHY / HOW / WHAT
   ============================================================ */
.whq-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 3rem 0;
}

.whq-item {
  padding: 2rem;
  border-right: 1px solid var(--rule);
}

.whq-item:last-child { border-right: none; }

.whq-label { margin-bottom: 0.75rem; }

.whq-headline {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.45;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

/* ============================================================
   KEY DESIGN CONSIDERATIONS — expandable
   ============================================================ */
.considerations-wrap {
  margin: 3rem 0;
}

.considerations-wrap > p.label {
  margin-bottom: 0;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--rule);
}

/* Each consideration is a <details> block */
.considerations-wrap details {
  border-bottom: 1px solid var(--rule);
}

.considerations-wrap details summary {
  padding: 1.25rem 0;
}

.considerations-wrap details summary .summary-title {
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0;
}

.considerations-wrap details summary .summary-icon {
  border: none;
  border-radius: 0;
}

.consideration-body {
  padding-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.consideration-desc { max-width: 680px; }

/* Asset: image */
.asset-image {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--rule);
}

.asset-image img { width: 100%; height: auto; }

/* Asset: code */
.asset-code {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--rule);
  background: var(--surface);
}

.code-label {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  border-bottom: 1px solid var(--rule);
  background: var(--rule-light);
}

pre {
  padding: 1.25rem;
  overflow-x: auto;
  font-size: 0.8125rem;
  line-height: 1.7;
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', monospace;
  color: var(--text-primary);
}

code { font-family: inherit; }

/* ============================================================
   PROJECT NAV
   ============================================================ */
.project-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2.5rem 0;
  border-top: 1px solid var(--rule);
  gap: 1rem;
  flex-wrap: wrap;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .whq-grid {
    grid-template-columns: 1fr;
  }
  .whq-item { border-right: none; border-bottom: 1px solid var(--rule); }
  .whq-item:last-child { border-bottom: none; }
  .banner { aspect-ratio: 4/3; }
}

@media (max-width: 640px) {
  .banner { aspect-ratio: 1/1; }
  .proj-meta { flex-direction: column; gap: 0.25rem; }
  .proj-meta__sep { display: none; }
}

/* ============================================================
   SPACING BETWEEN PARAGRAPHS
   ============================================================ */
.consideration-desc li {
  margin-bottom: 12px;
}

.consideration-desc li:last-child {
  margin-bottom: 0;
}