/* ============================================================
   GALLERY PAGE — STYLES
   ------------------------------------------------------------
   Separate file from style.css on purpose: this only loads on
   gallery.html, and keeps index.html's stylesheet completely
   untouched. Uses the same design tokens (--navy, --coral, --teal,
   fonts, radius, shadows) defined in css/style.css, so it matches
   the rest of the site automatically.
   ============================================================ */

/* ---------- Gallery hero (smaller than the homepage hero) ---------- */
.gallery-hero{
  padding: 64px 0 40px;
  text-align: center;
  background: linear-gradient(180deg, var(--teal-light) 0%, var(--bg) 100%);
}
.gallery-hero h1{
  font-size: clamp(30px, 4.4vw, 44px);
  margin-bottom: 12px;
}
.gallery-hero p{
  max-width: 560px;
  margin: 0 auto;
  font-size: 17px;
}

/* ---------- Filter bar ---------- */
.filter-bar{
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  padding: 32px 0 8px;
}
.filter-btn{
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--card);
  color: var(--ink-soft);
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}
.filter-btn:hover{
  border-color: var(--teal);
  color: var(--teal);
}
.filter-btn.active{
  background: var(--coral);
  border-color: var(--coral);
  color: #fff;
}

/* ---------- Gallery grid ---------- */
.gallery-section{ padding-top: 24px; }
.gallery-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.gallery-item{
  position: relative;
  aspect-ratio: 4/3;
  border-radius: var(--radius-soft);
  overflow: hidden;
  cursor: pointer;
  box-shadow: var(--shadow-card);
  transition: transform .25s ease;
}
.gallery-item:hover{ transform: translateY(-4px); }
.gallery-item img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .3s ease;
}
.gallery-item:hover img{ transform: scale(1.06); }
.gallery-item-overlay{
  position: absolute;
  inset: 0;
  background: rgba(30, 75, 95, 0.35);
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity .2s ease;
}
.gallery-item:hover .gallery-item-overlay{ opacity: 1; }
.gallery-item-overlay svg{
  width: 34px;
  height: 34px;
  color: #fff;
}

/* Items filtered out are hidden (JS toggles this class) */
.gallery-item.gallery-hidden{ display: none; }

.gallery-empty{
  text-align: center;
  color: var(--ink-soft);
  padding: 40px 0;
  display: none;
}
.gallery-empty:not(.hidden){ display: block; }

/* ---------- Lightbox ---------- */
.lightbox-overlay{
  position: fixed;
  inset: 0;
  background: rgba(20, 30, 35, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 40px;
}
.lightbox-overlay.open{ display: flex; }
.lightbox-image{
  max-width: 90vw;
  max-height: 85vh;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.lightbox-close{
  position: absolute;
  top: 24px;
  right: 28px;
  background: none;
  border: none;
  color: #fff;
  font-size: 34px;
  line-height: 1;
  cursor: pointer;
  opacity: 0.85;
}
.lightbox-close:hover{ opacity: 1; }
.lightbox-nav{
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.12);
  border: none;
  color: #fff;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .18s ease;
}
.lightbox-nav:hover{ background: rgba(255,255,255,0.25); }
.lightbox-prev{ left: 24px; }
.lightbox-next{ right: 24px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .gallery-grid{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px){
  .gallery-grid{ grid-template-columns: 1fr; gap: 16px; }
  .lightbox-nav{ width: 40px; height: 40px; }
  .lightbox-prev{ left: 10px; }
  .lightbox-next{ right: 10px; }
  .lightbox-close{ top: 14px; right: 16px; }
}