/* =====================================================
   HAWTHORNE PUBLISHERS — portfolio.css
   Page: Portfolio (portfolio.php)
===================================================== */

/* ── HERO ── */
.port-hero {
  background: linear-gradient(rgba(20,35,18,.82), rgba(20,35,18,.82)),
              url('../images/books_cta.png') center/cover no-repeat;
  padding: 8.5rem 0 3.5rem;
  text-align: center;
}
.port-hero-badge {
  display: inline-block;
  border: 1px solid rgba(40,167,69,.45);
  background: rgba(40,167,69,.12);
  color: #7fe396;
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  border-radius: 50px;
  padding: .28rem .9rem;
  margin-bottom: .9rem;
}
.port-hero-h {
  font-family: var(--ff-serif);
  font-size: clamp(1.7rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  max-width: 700px;
  margin: 0 auto 1rem;
}
.port-hero-sub {
  color: rgba(255,255,255,.75);
  font-size: .95rem;
  line-height: 1.65;
  max-width: 560px;
  margin: 0 auto 2rem;
}
.port-hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}
.port-stat-num {
  font-family: var(--ff-serif);
  font-size: 1.9rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}
.port-stat-label {
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
  margin-top: .2rem;
}

/* ── BOOKS SECTION ── */
.port-books-section {
  background: #fff;
  padding: 3.5rem 0 5rem;
}
.port-books-h {
  font-family: var(--ff-serif);
  font-size: clamp(1.5rem, 2.8vw, 1.9rem);
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 2rem;
}

/* Left category sidebar */
.port-sidebar {
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  overflow: hidden;
  overflow-y: auto;
}
.port-sidebar::-webkit-scrollbar { width: 3px; }
.port-sidebar::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 2px; }
.port-cat-item {
  display: block;
  padding: .55rem 0;
  font-size: .88rem;
  color: var(--c-text);
  text-decoration: none;
  border-bottom: 1px solid var(--c-border);
  transition: color 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
  cursor: pointer;
}
.port-cat-item:hover { transform: translateX(4px); }
.port-cat-item:hover { color: var(--c-green-btn); }
.port-cat-item.active {
  color: var(--c-green-btn);
  font-weight: 700;
  border-bottom-color: var(--c-green-btn);
}

/* Books grid — 3D tilted book thumbnails */
.port-books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 16px;
}
.port-book-item {
  cursor: pointer;
  transition: var(--tr);
  filter: drop-shadow(3px 6px 12px rgba(0,0,0,.18));
}
.port-book-item:hover {
  transform: translateY(-6px) scale(1.04);
  filter: drop-shadow(4px 10px 18px rgba(0,0,0,.28));
}
.port-book-item img {
  width: 100%;
  display: block;
  border-radius: 4px;
  aspect-ratio: 2/3;
  object-fit: cover;
}