/* =========================
   GALLERIA 3.0 — sidebar + lightbox
   ========================= */

:root{
  --gl-bg:#fff;
  --gl-soft:#f6f7f7;

  --gl-text:#141416;
  --gl-muted:#5b5b61;

  --gl-accent:#0d4f4f;
  --gl-accent2:#0a3f3f;

  --gl-border: rgba(0,0,0,.08);
  --gl-shadow: 0 14px 40px rgba(0,0,0,.10);

  --gl-radius: 18px;
  --gl-max: 1120px;
}

*{ box-sizing:border-box; }
body{
  margin:0;
  font-family:"Montserrat", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--gl-text);
  background:var(--gl-bg);
  line-height:1.5;
}

.gl-container{
  max-width:var(--gl-max);
  margin:0 auto;
  padding:0 16px;
}

/* HERO */
.gl-hero{
  padding: 54px 0 26px;
  background:
    radial-gradient(900px 420px at 18% 30%, rgba(13,79,79,.14), transparent 60%),
    linear-gradient(180deg, #fff, var(--gl-soft));
  border-bottom: 1px solid var(--gl-border);
}
.gl-kicker{
  margin:0 0 10px;
  color:var(--gl-muted);
  font-weight:800;
  letter-spacing:.12px;
  text-transform:uppercase;
  font-size:.86rem;
}
.gl-hero h1{
  margin:0 0 10px;
  font-size: clamp(34px, 4.2vw, 54px);
  line-height:1.05;
  letter-spacing:-.6px;
}
.gl-subtitle{
  margin:0;
  color:var(--gl-muted);
  max-width: 95ch;
}

/* BODY */
.gl-body{
  padding: 34px 0 58px;
  background: linear-gradient(180deg, var(--gl-soft), #fff 30%);
}
.gl-layout{
  display:grid;
  grid-template-columns: 320px 1fr;
  gap: 18px;
}

/* ASIDE */
.gl-asideBox{
  position: sticky;
  top: 90px;
  background: rgba(255,255,255,.9);
  border: 1px solid var(--gl-border);
  border-radius: var(--gl-radius);
  box-shadow: var(--gl-shadow);
  padding: 16px;
}
.gl-asideTitle{
  font-weight:900;
  letter-spacing:-.2px;
  margin-bottom: 10px;
}
.gl-nav{
  display:grid;
  gap: 8px;
}
.gl-navLink{
  display:flex;
  text-decoration:none;
  color: var(--gl-text);
  font-weight:850;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(0,0,0,.06);
  background: rgba(255,255,255,.85);
  transition: background 160ms ease, transform 160ms ease, border-color 160ms ease;
}
.gl-navLink:hover{
  background: rgba(13,79,79,.06);
  border-color: rgba(13,79,79,.18);
  transform: translateY(-1px);
}
.gl-navLink.is-active{
  background: rgba(13,79,79,.10);
  border-color: rgba(13,79,79,.28);
  color: var(--gl-accent2);
}

.gl-asideMini{
  margin-top: 12px;
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
}
.gl-miniBtn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 10px 12px;
  border-radius: 999px;
  text-decoration:none;
  font-weight: 900;
  border: 1px solid rgba(13,79,79,.22);
  background: rgba(13,79,79,.10);
  color: var(--gl-accent2);
}
.gl-miniBtn--ghost{ background:#fff; }

/* SECTIONS */
.gl-section{
  padding: 18px;
  border-radius: var(--gl-radius);
  border: 1px solid var(--gl-border);
  box-shadow: 0 10px 24px rgba(0,0,0,.06);
  background: #fff;
  margin-bottom: 16px;
}
.gl-head h2{
  margin: 0 0 8px;
  font-size: clamp(22px, 2.4vw, 32px);
  letter-spacing:-.3px;
}
.gl-head p{
  margin:0;
  color: var(--gl-muted);
}

/* GRID IMMAGINI */
.gl-grid{
  margin-top: 14px;
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 10px;
}

.gl-item{
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(0,0,0,.10);
  border: 1px solid rgba(0,0,0,.08);
  transition: transform 160ms ease;
}

.gl-item:hover{ transform: translateY(-2px); }

.gl-item img{
  display:block;
  width:100%;
  height: 220px;
  object-fit: cover;
}

/* layout “mosaico” leggero */
.gl-grid .gl-item:nth-child(1){ grid-column: span 6; }
.gl-grid .gl-item:nth-child(2){ grid-column: span 6; }
.gl-grid .gl-item:nth-child(3){ grid-column: span 4; }
.gl-grid .gl-item:nth-child(4){ grid-column: span 8; }
.gl-grid .gl-item:nth-child(5){ grid-column: span 6; }
.gl-grid .gl-item:nth-child(6){ grid-column: span 6; }

/* se poche foto, non importa: si adatta */
@media (max-width: 980px){
  .gl-layout{ grid-template-columns: 1fr; }
  .gl-asideBox{ position: static; }
  .gl-item img{ height: 210px; }

  .gl-grid .gl-item:nth-child(n){
    grid-column: span 12;
  }
}

/* LIGHTBOX */
.gl-modal{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.72);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
  z-index: 5000;

  display:flex;
  align-items:center;
  justify-content:center;
  padding: 16px;
}

.gl-modal.is-open{
  opacity: 1;
  pointer-events: auto;
}

.gl-modalInner{
  width: min(1100px, 96vw);
  height: min(740px, 86vh);
  background: rgba(20,20,22,.90);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 18px;
  box-shadow: 0 30px 90px rgba(0,0,0,.45);
  position: relative;

  display:flex;
  align-items:center;
  justify-content:center;
}

.gl-figure{
  margin: 0;
  width: 100%;
  height: 100%;
  padding: 16px 64px;
  display:flex;
  flex-direction: column;
  align-items:center;
  justify-content:center;
  gap: 10px;
}

.gl-modalImg{
  max-width: 100%;
  max-height: calc(100% - 44px);
  object-fit: contain;
  border-radius: 12px;
}

.gl-caption{
  color: rgba(255,255,255,.82);
  font-weight: 750;
  text-align: center;
  font-size: .95rem;
  margin: 0;
  min-height: 18px;
}

.gl-close{
  position:absolute;
  top: 12px;
  right: 12px;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: #fff;
  font-size: 30px;
  line-height: 1;
  cursor:pointer;
}

.gl-navBtn{
  position:absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 56px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: #fff;
  cursor:pointer;
  font-size: 26px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.gl-navBtn.prev{ left: 10px; }
.gl-navBtn.next{ right: 10px; }

@media (max-width: 700px){
  .gl-figure{ padding: 14px 54px; }
  .gl-navBtn{ width: 44px; height: 52px; }
}