/* ===================== Base ===================== */
:root{
  --bg: #0a1120;
  --bg-alt: #0d1626;
  --card: #131f34;
  --card-2: #16233c;
  --border: rgba(212,175,55,0.14);
  --border-soft: rgba(255,255,255,0.07);
  --gold: #d4af37;
  --gold-light: #f0cf6b;
  --gold-deep: #b8862c;
  --text: #eef1f6;
  --text-muted: #9fb0c3;
  --text-dim: #6c7a91;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 20px 50px rgba(0,0,0,0.35);
  --container: 1180px;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: 'Cairo', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.85;
  overflow-x: hidden;
}
img,svg{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3,h4{ margin:0; font-weight:800; line-height:1.35; }
p{ margin:0; color: var(--text-muted); }

.container{
  width:100%;
  max-width: var(--container);
  margin:0 auto;
  padding:0 24px;
}
.text-gold{ color: var(--gold); }

/* ===================== Loader ===================== */
.loader{
  position:fixed; inset:0; background:var(--bg);
  display:flex; align-items:center; justify-content:center;
  z-index:9999; transition: opacity .6s ease, visibility .6s ease;
}
.loader.hide{ opacity:0; visibility:hidden; }
.loader-mark{ animation: pulse 1.4s ease-in-out infinite; }
@keyframes pulse{ 0%,100%{ transform:scale(1); opacity:1;} 50%{ transform:scale(1.15); opacity:.6;} }

/* ===================== Buttons ===================== */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 14px 30px; border-radius: 999px; font-weight:700; font-size:15px;
  border: 1px solid transparent; cursor:pointer; transition: all .3s ease;
  white-space:nowrap;
}
.btn-gold{ background: linear-gradient(135deg, var(--gold-light), var(--gold-deep)); color:#181206; box-shadow: 0 10px 30px rgba(212,175,55,.25); }
.btn-gold:hover{ transform: translateY(-3px); box-shadow: 0 16px 36px rgba(212,175,55,.4); }
.btn-outline{ border-color: rgba(255,255,255,.25); color: var(--text); }
.btn-outline:hover{ border-color: var(--gold); color: var(--gold); transform: translateY(-3px); }
/* ===================== Top bar ===================== */
.topbar{ background: #060a13; border-bottom:1px solid var(--border-soft); font-size:11px; }
.topbar-inner{ display:flex; align-items:center; justify-content:space-between; height:26px; color: var(--text-dim); }
.topbar-info{ display:flex; gap:16px; }
.tb-item{ display:flex; align-items:center; gap:5px; }
.tb-item svg{ width:11px; height:11px; color: var(--gold); flex:none; }
.topbar-social{ display:flex; align-items:center; gap:5px; }
.social-dot{
  width:17px; height:17px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background: rgba(212,175,55,.08); color: var(--gold); font-size:9px; font-weight:700; transition:.3s;
}
.social-dot:hover{ background: var(--gold); color:#0a1120; transform: translateY(-2px); }

/* ===================== Navbar ===================== */
.navbar{
  position:sticky; top:0; z-index:1000;
  border-bottom: 1px solid var(--border-soft);
  transition: background .3s ease;
  isolation: isolate;
}
.navbar::before{
  content:""; position:absolute; inset:0; z-index:-1;
  background: rgba(10,17,32,.72);
  backdrop-filter: blur(14px);
}
.nav-inner{ display:flex; align-items:center; justify-content:space-between; height:78px; gap: 20px; }
.brand{ display:flex; align-items:center; gap:10px; }
.brand-text{ display:flex; flex-direction:column; line-height:1.2; gap:4px; }
.brand-text strong{ font-size:19px; letter-spacing:.5px; }
.brand-text small{ font-size:11px; color: var(--text-dim); }

.nav-links{ display:flex; align-items:center; gap:32px; }
.nav-links a{ font-size:15px; font-weight:600; color: var(--text-muted); position:relative; padding:6px 0; transition:.3s; }
.nav-links a::after{
  content:""; position:absolute; right:0; bottom:0; height:2px; width:0; background: var(--gold);
  transition: width .3s ease;
}
.nav-links a:hover, .nav-links a.active{ color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after{ width:100%; }

.nav-toggle{ display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:6px; }
.nav-toggle span{ width:24px; height:2px; background: var(--gold); border-radius:2px; transition:.3s; }

/* ===================== Hero ===================== */
.hero{ position:relative; padding-top: 150px; min-height: 92vh; display:flex; flex-direction:column; overflow:hidden; }
.hero-bg{ position:absolute; inset:0; z-index:0; }
.hero-svg{ width:100%; height:100%; }
.hero-content{ position:relative; z-index:2; max-width: 780px; flex:1; display:flex; flex-direction:column; justify-content:center; padding-bottom: 90px; }
.eyebrow{
  display:inline-block; font-size:13px; font-weight:700; color: var(--gold);
  padding:7px 16px; border:1px solid var(--border); border-radius:999px; background: rgba(212,175,55,.06);
  margin-bottom:20px;
}
.hero h1{ font-size: clamp(34px, 5vw, 58px); margin-bottom:22px; }
.hero-text{ font-size:17px; max-width: 640px; margin-bottom: 34px; }
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; }

/* ===================== Sections ===================== */
.section{ padding: 100px 0; }
.section-alt{ background: var(--bg-alt); }
.section-head{ text-align:center; max-width: 640px; margin: 0 auto 56px; }
.section-head h2{ font-size: clamp(26px, 3.4vw, 38px); margin: 14px 0 16px; }

/* ===================== About ===================== */
.about-grid{ display:grid; grid-template-columns: 0.9fr 1.1fr; gap: 70px; align-items:center; }
.about-media{ position:relative; }
.badge-float{
  margin-top:20px; width:100%;
  background: var(--card); border:1px solid var(--border); border-radius: var(--radius-sm);
  padding:18px 20px; box-shadow: var(--shadow);
}
.badge-float strong{ display:block; color: var(--gold-light); margin-bottom:6px; font-size:14px; }
.badge-float span{ font-size:12.5px; color: var(--text-muted); }

.about-text h2{ font-size: clamp(26px, 3.4vw, 36px); margin: 12px 0 20px; }
.about-text p{ margin-bottom:16px; }

.values{ display:grid; grid-template-columns: repeat(3,1fr); gap:16px; margin-top:32px; }
.value-item{ background: var(--card); border:1px solid var(--border-soft); border-radius: var(--radius-sm); padding:20px 16px; text-align:center; transition:.3s; }
.value-item:hover{ border-color: var(--border); transform: translateY(-4px); }
.value-ic{ width:44px; height:44px; margin:0 auto 12px; }
.value-item strong{ display:block; font-size:14.5px; margin-bottom:6px; }
.value-item span{ font-size:12px; color: var(--text-dim); }

/* ===================== Services ===================== */
.services-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:28px; }
.service-card{
  background: linear-gradient(160deg, var(--card-2), var(--card));
  border:1px solid var(--border-soft); border-radius: var(--radius); padding: 40px 30px;
  transition: all .35s ease; position:relative; overflow:hidden;
}
.service-card::before{
  content:""; position:absolute; inset:0; opacity:0; transition:.35s;
  background: radial-gradient(500px circle at 50% 0%, rgba(212,175,55,.12), transparent 60%);
}
.service-card:hover::before{ opacity:1; }
.service-card:hover{ transform: translateY(-8px); border-color: var(--border); box-shadow: var(--shadow); }
.service-ic{ width:64px; height:64px; color: var(--gold); margin-bottom:22px; }
.service-card h3{ font-size:21px; margin-bottom:12px; }
.service-card p{ font-size:14.5px; }

/* ===================== Minerals ===================== */
.minerals-grid{ display:grid; grid-template-columns: repeat(4,1fr); gap:16px; }
.mineral-item{
  display:flex; align-items:center; gap:12px; background: var(--card);
  border:1px solid var(--border-soft); border-radius: var(--radius-sm); padding:18px 20px;
  font-weight:700; font-size:15px; transition:.3s;
}
.mineral-item:hover{ border-color: var(--gold); background: var(--card-2); transform: translateX(-4px); }
.m-ic{ color: var(--gold); font-size:14px; }

/* ===================== Gallery ===================== */
.gallery-grid{ display:grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: 220px; gap:20px; }
.g-card{
  position:relative; margin:0; border-radius: var(--radius); overflow:hidden;
  border:1px solid var(--border-soft); grid-row: span 1;
}
.g-tall{ grid-row: span 2; }
.g-card svg{ width:100%; height:100%; object-fit:cover; transition: transform .5s ease; }
.g-card:hover svg{ transform: scale(1.08); }
.g-card figcaption{
  position:absolute; inset-inline:0; bottom:0; padding:22px 20px;
  background: linear-gradient(0deg, rgba(6,10,19,.92), transparent);
  display:flex; flex-direction:column; gap:4px;
}
.g-card figcaption strong{ font-size:15px; }
.g-card figcaption span{ font-size:12.5px; color: var(--text-muted); }

/* ===================== Contact ===================== */
.contact-card{
  background: linear-gradient(120deg, var(--gold-deep), var(--gold-light));
  border-radius: var(--radius); padding: 38px 34px; text-align:center; box-shadow: var(--shadow);
}
.eyebrow-dark{ color:#181206; background: rgba(24,18,6,.12); border-color: rgba(24,18,6,.22); }
.contact-card h2{ color:#181206; font-size: clamp(19px,2.2vw,24px); margin:10px 0 10px; }
.contact-card > p{ color:#3a2c0a; max-width:560px; margin:0 auto; font-size:13.5px; }

.info-grid{ display:grid; grid-template-columns: repeat(4,1fr); gap:14px; margin-top:28px; }
.info-item{
  background: rgba(10,17,32,.1); border:1px solid rgba(10,17,32,.16); border-radius: var(--radius-sm);
  padding: 18px 12px; display:flex; flex-direction:column; align-items:center; gap:7px;
}
.info-ic-dark{ width:36px; height:36px; flex:none; background:#181206; border-radius:50%; display:flex; align-items:center; justify-content:center; }
.info-ic-dark svg{ width:16px; height:16px; }
.info-item strong{ font-size:13px; color:#181206; }
.info-item span{ font-size:11.5px; color:#3a2c0a; }

/* ===================== Footer ===================== */
.footer{ background:#060a13; border-top:1px solid var(--border-soft); padding-top: 70px; }
.footer-grid{ display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:50px; }
.footer-brand{ margin-bottom:16px; }
.footer p{ font-size:13.5px; margin-bottom:18px; }
.footer h4{ font-size:15px; margin-bottom:18px; color: var(--gold-light); }
.footer ul{ display:flex; flex-direction:column; gap:11px; }
.footer ul a, .footer-contact li{ font-size:13.5px; color: var(--text-muted); transition:.3s; }
.footer ul a:hover{ color: var(--gold); padding-right:4px; }
.footer-social{ display:flex; gap:10px; }

.footer-bottom{ border-top:1px solid var(--border-soft); padding: 20px 0; }
.footer-bottom-inner{ text-align:center; font-size:13px; color: var(--text-dim); }

/* ===================== To top ===================== */
.to-top{
  position:fixed; bottom:26px; left:26px; width:46px; height:46px; border-radius:50%;
  background: var(--gold); color:#0a1120; border:none; font-size:18px; font-weight:900; cursor:pointer;
  display:flex; align-items:center; justify-content:center; box-shadow: var(--shadow);
  opacity:0; visibility:hidden; transform: translateY(10px); transition: all .3s ease; z-index:900;
}
.to-top.show{ opacity:1; visibility:visible; transform:translateY(0); }
.to-top:hover{ transform: translateY(-4px); }

/* ===================== Reveal animation ===================== */
.reveal{ opacity:0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in{ opacity:1; transform: translateY(0); }

/* ===================== Responsive ===================== */
@media (max-width: 992px){
  .about-grid{ grid-template-columns:1fr; }
  .services-grid{ grid-template-columns: 1fr 1fr; }
  .minerals-grid{ grid-template-columns: repeat(2,1fr); }
  .gallery-grid{ grid-template-columns: repeat(2,1fr); }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .info-grid{ grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 768px){
  .topbar-info span:last-child{ display:none; }
  .nav-links{
    position:fixed; inset: 78px 0 0 0; background: rgba(6,10,19,.98); backdrop-filter: blur(10px);
    flex-direction:column; justify-content:flex-start; padding: 40px 24px; gap:22px;
    transform: translateX(100%); transition: transform .35s ease; z-index:999;
  }
  .nav-links.open{ transform: translateX(0); }
  .nav-toggle{ display:flex; }
  .hero{ padding-top:120px; }
  .services-grid{ grid-template-columns:1fr; }
  .minerals-grid{ grid-template-columns: repeat(2,1fr); }
  .gallery-grid{ grid-template-columns: 1fr; }
  .g-tall{ grid-row: span 1; }
  .contact-card{ padding: 28px 20px; }
  .info-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns:1fr; }
}