/* CS Short Notes page (black & white cyberpunk) */
/* Link after CSS/style.css */

.hero.hero-min { min-height: 42vh; }

/* Section spacing */
.notes-section { padding: clamp(2rem, 5vw, 3rem) 0 clamp(3rem, 6vw, 4rem); }

/* Grid */
.notes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2.5vw, 1.4rem);
}
@media (max-width: 1100px) { .notes-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 780px)  { .notes-grid { grid-template-columns: 1fr; } }

/* Cards */
.note-card .thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-bottom: var(--border-w, 1px) solid var(--line, rgba(255,255,255,0.12));
  background: rgba(255,255,255,0.03);
}
.note-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: .6rem;
  filter: grayscale(1) contrast(1.05) brightness(0.9);
  transform: scale(1.01);
  transition: transform 260ms ease, filter 260ms ease, opacity 260ms ease;
  opacity: 0.92;
  cursor: zoom-in;
}
.note-card:hover .thumb img {
  transform: scale(1.03);
  filter: grayscale(1) contrast(1.15) brightness(1);
  opacity: 1;
}
.note-card .card-inner { padding: 1rem 1rem 1.1rem; }
.note-card .meta {
  color: var(--muted-weak, rgba(255,255,255,0.52));
  font-size: .88rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.note-card .title {
  margin: .35rem 0 .5rem;
  font-size: 1.15rem;
  line-height: 1.25;
}
.note-card .actions { display: flex; gap: .5rem; }

/* Back nav */
.post-nav { display: flex; justify-content: flex-end; margin-top: 1.2rem; gap: .5rem; }
@media (max-width: 600px) { .post-nav { justify-content: flex-start; } }

/* Lightbox */
.lightbox[hidden] { display: none !important; }
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1003;
  display: grid;
  place-items: center;
  background: rgba(0,0,0,0.9);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 180ms ease, transform 180ms ease;
  pointer-events: none;
}
.lightbox.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.lb-media {
  max-width: 94vw;
  max-height: 92vh;
  display: grid;
  gap: .5rem;
  justify-items: center;
}
.lb-media img {
  max-width: 94vw;
  max-height: 86vh;
  border-radius: 12px;
  border: var(--border-w, 1px) solid var(--line, rgba(255,255,255,0.12));
  background: rgba(255,255,255,0.03);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.08), 0 0 24px rgba(255,255,255,0.06);
}
#lbCap {
  color: var(--muted-weak, rgba(255,255,255,0.6));
  font-size: .92rem;
  text-align: center;
}
.lb-close {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: .35rem .6rem;
  border-radius: 8px;
  border: var(--border-w, 1px) solid var(--line, rgba(255,255,255,0.12));
  background: var(--glass, rgba(255,255,255,0.04));
  color: var(--fg, #fff);
  cursor: pointer;
  font-size: 1.1rem;
}
.lb-close:hover { background: rgba(255,255,255,0.08); }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .lightbox { transition: none !important; }
}