/* ─────────────────────────────  projects.css  ───────────────────────────
   ABIK Engineering – Projects Gallery (hero + thumbs + lightbox)
   Mobile-first  •  Gold / Black brand palette  •  Scroll-reveal friendly
   ------------------------------------------------------------------ */

/* 0 ▸  Base palette & helpers */
:root{
  --gold:       #d4af37;
  --gold-dark:  #b88700;
  --black:      #000;
  --white:      #fff;
  --gray-50:    #fafafa;
  --gray-100:   #f1f1f1;
  --shadow-s:   0 3px 10px rgba(0,0,0,.05);
  --shadow-m:   0 8px 24px rgba(0,0,0,.08);
  --max-width:  1200px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:Poppins,sans-serif;
  background:var(--white);color:var(--black);
  line-height:1.65;overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}

.container{max-width:var(--max-width);margin:auto;padding:0 1rem}
.section-pad{padding:3.5rem 1rem}
.section-title{text-align:center;font-size:clamp(2rem,5vw,2.7rem);margin-bottom:2.2rem}

/* 1 ▸  Banner */
.banner{position:relative;height:clamp(420px,50vh,540px);overflow:hidden}
.banner img{width:100%;height:100%;object-fit:cover}
.banner-overlay{position:absolute;inset:0;background:rgba(0,0,0,.55);
                display:flex;justify-content:center;align-items:center}
.banner-overlay h1{color:var(--white);font-size:clamp(1.8rem,5.5vw,2.6rem)}

/* 2 ▸  Project grid */
.project-grid{
  display:grid;gap:2rem;
  grid-template-columns:repeat(auto-fit,minmax(min(300px,100%),1fr));
}

.project-card{
  display:flex;flex-direction:column;background:var(--gray-50);
  border-radius:10px;overflow:hidden;box-shadow:var(--shadow-s);
  transition:transform .26s,box-shadow .26s;
}
.project-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-m)}

/* 2A ▸ Media (hero + thumbs) */
.project-media{background:var(--gray-100)}
.hero-img{width:100%;aspect-ratio:4/3;object-fit:cover}
.thumb-bar{display:flex;gap:6px;padding:8px;background:var(--gray-100)}
.thumb{
  flex:1;border-radius:6px;aspect-ratio:1/1;object-fit:cover;
  cursor:pointer;transition:opacity .25s;box-shadow:var(--shadow-s);}
.thumb:hover{opacity:.8}

/* 2B ▸ Info block */
.project-info{padding:1.1rem 1.2rem;display:flex;flex-direction:column;gap:.5rem}
.proj-title{color:var(--gold-dark);font-size:1.1rem;font-weight:600;line-height:1.3}
.proj-desc{font-size:.9rem;color:#444;white-space:pre-line}
.proj-date{font-size:.8rem;color:var(--gold);letter-spacing:.5px}

/* 3 ▸  Lightbox */
.lightbox{
  position:fixed;inset:0;display:flex;justify-content:center;align-items:center;
  background:rgba(0,0,0,.93);z-index:3000;
}
.lightbox[hidden]{display:none}
.lightbox img{max-width:90vw;max-height:90vh;border-radius:6px;
              box-shadow:0 0 25px rgba(0,0,0,.4)}
.lb-btn{
  position:absolute;background:none;border:none;color:#fff;cursor:pointer;
  font-size:2.2rem;padding:.25em .6em;line-height:1;transition:opacity .25s}
.lb-btn:hover{opacity:.8}
.lb-close{top:3vh;right:2vw;font-size:2.7rem}
.lb-prev{left:2vw;top:50%;transform:translateY(-50%)}
.lb-next{right:2vw;top:50%;transform:translateY(-50%)}

/* 4 ▸  CTA */
.cta{
  position:relative;background:url('/images/hero.jpg') center/cover fixed;
  color:#fff;text-align:center;isolation:isolate}
.cta::before{content:'';position:absolute;inset:0;background:rgba(0,0,0,.55);
             z-index:-1}
.cta .container{padding:4rem 1rem;max-width:900px}
.cta h2{font-size:clamp(2rem,5vw,2.8rem);margin-bottom:1.2rem;color:var(--gold-dark)}
.cta p{max-width:580px;margin:0 auto 2rem}
.cta .btn{
  display:inline-flex;align-items:center;gap:.5rem;
  background:var(--gold);color:var(--black);font-weight:600;
  padding:.9rem 2.4rem;border-radius:50px;
  transition:transform .2s,box-shadow .3s}
.cta .btn::after{content:'→';transition:transform .3s}
.cta .btn:hover{transform:translateY(-3px);box-shadow:0 0 14px rgba(212,175,55,.45)}
.cta .btn:hover::after{transform:translateX(4px)}

/* 5 ▸  Responsive tweaks */
@media(max-width:580px){
  .section-pad{padding:2.6rem 1rem}
  .project-grid{gap:1.5rem}
  .hero-img{aspect-ratio:16/10}
  .thumb-bar{gap:5px;padding:6px}
}
@media(max-width:420px){
  .thumb-bar{gap:4px}
  .project-info{padding:1rem .9rem}
  .proj-title{font-size:1rem}
  .proj-desc{font-size:.85rem}
}