/* ============================================================
   RIL Minerals & Chemicals — Global Stylesheet
   Brand: #4574DB (primary)  #363739 (dark)  #93D7E1 (cyan)  #F9BA3B (gold)
   ============================================================ */
:root{
  --blue:#4574DB;
  --blue-dark:#2f4fa0;
  --dark:#363739;
  --dark-2:#2b2e34;
  --cyan:#93D7E1;
  --gold:#F9BA3B;
  --ink:#363739;
  --muted:#6a7384;
  --muted-2:#8a93a3;
  --bg:#f6f8fb;
  --line:rgba(54,55,57,.08);
  --radius:16px;
  --shadow:0 12px 30px rgba(54,55,57,.06);
  --shadow-lg:0 26px 50px rgba(54,55,57,.14);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Open Sans',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink);
  background:#fff;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{text-decoration:none;color:inherit;}
h1,h2,h3,h4,p{margin:0;}
img{max-width:100%;display:block;}
.container-x{max-width:1240px;margin:0 auto;padding:0 24px;}
.section{padding:clamp(60px,8vw,100px) 0;}
.bg-soft{background:var(--bg);}
.bg-dark{background:var(--dark);}

/* ---------- Reveal on scroll (progressive enhancement) ----------
   Visible by DEFAULT. JS adds .pre to hide, then .in to reveal on scroll.
   If JS fails to run, nothing is hidden and all content stays visible. */
.reveal{transition:opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1);}
.reveal.pre{opacity:0;transform:translateY(28px);}
.reveal.pre.in{opacity:1;transform:none;}

/* ---------- Eyebrow / headings ---------- */
.eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:3px;text-transform:uppercase;color:var(--blue);}
.eyebrow.light{color:var(--cyan);}
.h-section{font-size:clamp(28px,4vw,42px);font-weight:800;letter-spacing:-.6px;margin-top:14px;line-height:1.12;}
.lead{color:var(--muted);font-size:16.5px;line-height:1.7;margin-top:16px;}
.section-head{text-align:center;max-width:660px;margin:0 auto 50px;}

/* ---------- Buttons ---------- */
.btn-ril{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:15px;padding:14px 26px;border-radius:11px;border:none;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease,background .25s ease;}
.btn-gold{background:var(--gold);color:var(--dark-2);box-shadow:0 12px 26px rgba(249,186,59,.32);}
.btn-gold:hover{transform:translateY(-3px);color:var(--dark-2);}
.btn-blue{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(69,116,219,.3);}
.btn-blue:hover{transform:translateY(-2px);color:#fff;box-shadow:0 12px 26px rgba(69,116,219,.42);}
.btn-dark{background:var(--dark);color:#fff;}
.btn-dark:hover{background:var(--blue);color:#fff;}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.22);}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;}

/* ---------- Navbar ---------- */
.ril-nav{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:box-shadow .3s ease,background .3s ease;}
.ril-nav.scrolled{box-shadow:0 6px 24px rgba(54,55,57,.10);background:rgba(255,255,255,.93);}
.ril-nav .navbar-brand{display:flex;align-items:center;gap:12px;}
.ril-nav .brand-logo{width:130px;height:80px;}
.brand-name{display:flex;flex-direction:column;line-height:1.04;}
.brand-name .b1{font-weight:800;font-size:18px;letter-spacing:.4px;color:var(--dark);}
.brand-name .b2{font-weight:700;font-size:9.5px;letter-spacing:2.4px;color:var(--blue);text-transform:uppercase;}
.ril-nav .nav-link{padding:9px 15px;font-size:14.5px;font-weight:600;color:#5b6374;border-radius:9px;transition:color .2s,background .2s;}
.ril-nav .nav-link:hover{color:var(--blue);background:rgba(69,116,219,.07);}
.ril-nav .nav-link.active{color:var(--dark);font-weight:700;}
.call-pill{display:inline-flex;align-items:center;gap:9px;background:var(--blue);color:#fff;font-weight:700;font-size:14px;padding:11px 17px;border-radius:40px;box-shadow:0 8px 20px rgba(69,116,219,.3);transition:transform .25s,box-shadow .25s;}
.call-pill:hover{transform:translateY(-2px);color:#fff;box-shadow:0 12px 26px rgba(69,116,219,.42);}

/* ---------- Hero carousel ---------- */
.hero{position:relative;height:clamp(540px,80vh,780px);background:#23262d;overflow:hidden;}
.hero .carousel,.hero .carousel-inner,.hero .carousel-item{height:100%;}
.hero-slide{position:relative;height:100%;display:flex;align-items:center;}
.hero-slide img.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(95deg,rgba(26,29,36,.93) 0%,rgba(26,29,36,.72) 46%,rgba(26,29,36,.28) 100%);}
.hero-cap{position:relative;width:100%;max-width:1240px;margin:0 auto;padding:0 26px;}
.hero-cap .inner{max-width:640px;}
.hero-tag{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:3px;text-transform:uppercase;color:var(--cyan);}
.hero-tag .bar{width:26px;height:2px;background:var(--gold);display:inline-block;}
.hero h1{font-size:clamp(36px,5.6vw,64px);font-weight:800;color:#fff;line-height:1.04;letter-spacing:-1px;margin-top:18px;}
.hero h1 .sub{font-weight:600;font-size:.52em;color:#cfd6e2;letter-spacing:0;}
.hero p{color:rgba(255,255,255,.82);font-size:clamp(15px,1.7vw,18px);line-height:1.7;margin-top:20px;max-width:520px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.carousel-control-prev,.carousel-control-next{width:64px;}
.carousel-control-prev-icon,.carousel-control-next-icon{width:46px;height:46px;border-radius:50%;border:1px solid rgba(255,255,255,.25);background-color:rgba(0,0,0,.22);background-size:42%;}
.carousel-indicators [data-bs-target]{width:9px;height:9px;border-radius:20px;border:none;transition:width .35s,background .35s;opacity:1;background:rgba(255,255,255,.4);}
.carousel-indicators .active{width:32px;background:var(--gold);}

/* ---------- Generic cards ---------- */
.card-feature{background:#fff;border-radius:18px;padding:30px;border:1px solid var(--line);transition:transform .3s,box-shadow .3s;height:100%;}
.card-feature:hover{transform:translateY(-6px);box-shadow:0 22px 44px rgba(54,55,57,.12);}
.icon-box{width:56px;height:56px;border-radius:15px;display:flex;align-items:center;justify-content:center;font-size:26px;}
.ic-blue{background:rgba(69,116,219,.1);color:var(--blue);}
.ic-cyan{background:rgba(147,215,225,.22);color:#2c9aac;}
.ic-gold{background:rgba(249,186,59,.18);color:#d99413;}
.card-feature h3{font-size:19px;font-weight:700;margin-top:20px;}
.card-feature p{color:var(--muted);font-size:14.5px;line-height:1.7;margin-top:10px;}

/* ---------- Product cards ---------- */
.product-card{background:#fff;border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;height:100%;}
.product-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);}
.product-card .media{aspect-ratio:16/10;overflow:hidden;position:relative;}
.product-card .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.product-card:hover .media img{transform:scale(1.05);}
.media .tag{position:absolute;left:12px;top:12px;font-size:11px;font-weight:700;background:#fff;padding:5px 11px;border-radius:30px;box-shadow:0 2px 8px rgba(0,0,0,.12);}
.tag.oxides{color:#2c9aac;}
.tag.alloys{color:var(--blue);}
.tag.cenosphere{color:#d99413;}
.product-card .body{padding:24px;}
.product-card .body h3{font-size:20px;font-weight:800;}
.product-card .body .sku{color:var(--muted-2);font-size:13px;font-weight:600;margin-top:3px;}
.product-card .body p{color:var(--muted);font-size:14.5px;line-height:1.7;margin-top:12px;}
.read-more{display:inline-flex;align-items:center;gap:7px;margin-top:16px;color:var(--blue);font-weight:700;font-size:14px;transition:gap .2s;}
.read-more:hover{gap:12px;color:var(--blue);}

/* spec accordion (custom) */
.spec-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;margin-top:18px;padding:13px 16px;border:1px solid rgba(54,55,57,.1);background:var(--bg);border-radius:12px;font-weight:700;font-size:14px;color:var(--ink);cursor:pointer;transition:background .2s,border-color .2s;}
.spec-toggle .chev{transition:transform .25s ease;}
.spec-toggle.open{background:rgba(69,116,219,.08);border-color:rgba(69,116,219,.3);}
.spec-toggle.open .chev{transform:rotate(180deg);}
.spec-panel{display:none;padding:6px 4px 0;}
.spec-panel.open{display:block;}
.spec-row{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid rgba(54,55,57,.07);font-size:13.5px;}
.spec-row:last-child{border-bottom:none;}
.spec-row .k{color:var(--muted-2);}
.spec-row .v{font-weight:700;text-align:right;}

/* filter chips */
.filters{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:44px;}
.chip{padding:11px 22px;border-radius:40px;border:1px solid rgba(54,55,57,.14);background:#fff;color:#5b6374;font-weight:700;font-size:14px;cursor:pointer;transition:all .2s ease;}
.chip.active{background:var(--blue);color:#fff;border-color:var(--blue);}

/* ---------- Counters ---------- */
.stat .num{font-size:clamp(34px,5vw,52px);font-weight:800;line-height:1;}
.stat .lbl{font-size:14px;margin-top:8px;font-weight:600;}
.stat-box{background:var(--bg);border-radius:16px;padding:20px;border:1px solid rgba(54,55,57,.06);text-align:left;}
.stat-box .num{font-size:34px;font-weight:800;color:var(--dark);}
.stat-box .lbl{font-size:13px;color:var(--muted);margin-top:4px;font-weight:600;}

/* ---------- Video ---------- */
.video-card{position:relative;border-radius:22px;overflow:hidden;aspect-ratio:16/8;box-shadow:0 30px 70px rgba(54,55,57,.22);background:#2b2e34;}
.video-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.video-card .vo{position:absolute;inset:0;background:linear-gradient(120deg,rgba(31,34,42,.8),rgba(31,34,42,.42));}
.play-wrap{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;}
.play-btn{position:relative;width:80px;height:80px;border-radius:50%;border:none;background:var(--gold);color:var(--dark-2);font-size:30px;cursor:pointer;display:flex;align-items:center;justify-content:center;padding-left:6px;box-shadow:0 14px 34px rgba(0,0,0,.32);transition:transform .25s;}
.play-btn:hover{transform:scale(1.08);}
.play-ping{position:absolute;width:88px;height:88px;border-radius:50%;background:rgba(249,186,59,.55);animation:ping 2.2s cubic-bezier(0,0,.2,1) infinite;}
@keyframes ping{0%{transform:scale(1);opacity:.5}70%{transform:scale(1.7);opacity:0}100%{opacity:0}}

/* ---------- Image frames ---------- */
.img-frame{border-radius:22px;overflow:hidden;position:relative;box-shadow:0 22px 50px rgba(54,55,57,.14);}
.img-frame img{width:100%;height:100%;object-fit:cover;aspect-ratio:5/4;}
.badge-float{position:absolute;border-radius:16px;padding:18px 22px;box-shadow:0 18px 40px rgba(0,0,0,.22);color:#fff;}

/* ---------- CTA banner ---------- */
.cta-banner{border-radius:26px;background:linear-gradient(120deg,#4574DB 0%,#3a63c2 55%,#2f4fa0 100%);position:relative;overflow:hidden;padding:clamp(40px,6vw,72px);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;box-shadow:0 30px 60px rgba(69,116,219,.3);}
.cta-banner::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 85% 20%,rgba(147,215,225,.35),transparent 50%);}
.cta-banner>*{position:relative;}
.cta-banner h2{font-size:clamp(26px,3.6vw,40px);font-weight:800;color:#fff;letter-spacing:-.6px;line-height:1.15;}
.cta-banner p{color:rgba(255,255,255,.85);font-size:16.5px;line-height:1.7;margin-top:14px;}

/* ---------- Page hero (inner pages) ---------- */
.page-hero{position:relative;background:#23262d;padding:clamp(64px,10vw,110px) 24px;overflow:hidden;}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 82% 25%,rgba(147,215,225,.3),transparent 55%),linear-gradient(118deg,#1f222a 0%,#363739 60%,#2a2d34 100%);}
.page-hero.blue::before{background:radial-gradient(circle at 82% 25%,rgba(69,116,219,.34),transparent 55%),linear-gradient(118deg,#1f222a 0%,#363739 60%,#2a2d34 100%);}
.page-hero .inner{position:relative;max-width:1240px;margin:0 auto;}
.crumb{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--cyan);font-weight:600;}
.crumb a{color:var(--cyan);}
.crumb .sep{font-size:10px;opacity:.6;}
.crumb .cur{color:rgba(255,255,255,.7);}
.page-hero h1{font-size:clamp(34px,5.4vw,58px);font-weight:800;color:#fff;letter-spacing:-1px;margin-top:16px;}
.page-hero p{color:rgba(255,255,255,.78);font-size:clamp(15px,1.7vw,18px);line-height:1.75;margin-top:16px;max-width:640px;}

/* ---------- Timeline ---------- */
.timeline{position:relative;padding-left:34px;border-left:2px solid #e4eaf4;display:flex;flex-direction:column;gap:36px;}
.timeline .item{position:relative;}
.timeline .dot{position:absolute;left:-43px;top:2px;width:18px;height:18px;border-radius:50%;border:4px solid #fff;}
.timeline .yr{font-size:14px;font-weight:800;letter-spacing:1px;}
.timeline h3{font-size:20px;font-weight:700;margin-top:6px;}
.timeline p{color:var(--muted);font-size:15px;line-height:1.75;margin-top:8px;}

/* ---------- Avatars (leadership) ---------- */
.avatar{aspect-ratio:4/3;position:relative;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#3a4150,#2b2e34);}
.avatar span{width:96px;height:96px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:34px;font-weight:800;color:#fff;letter-spacing:1px;box-shadow:0 12px 28px rgba(0,0,0,.3);}

/* ---------- Marquee (partners) ---------- */
.marquee-section{position:relative;overflow:hidden;}
.marquee-section::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 15% 0%,rgba(147,215,225,.18),transparent 42%),radial-gradient(circle at 85% 100%,rgba(69,116,219,.1),transparent 45%);pointer-events:none;}
.marquee-viewport{position:relative;}
.marquee-fade{position:absolute;top:0;bottom:0;width:clamp(40px,8vw,110px);z-index:2;pointer-events:none;}
.marquee-fade.l{left:0;background:linear-gradient(90deg,var(--bg) 20%,rgba(246,248,251,0));}
.marquee-fade.r{right:0;background:linear-gradient(270deg,var(--bg) 20%,rgba(246,248,251,0));}
.marquee-track{display:flex;width:max-content;animation:marquee 36s linear infinite;will-change:transform;padding:14px 0;}
.marquee-viewport:hover .marquee-track{animation-play-state:paused;}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.logo-tile{flex:0 0 auto;margin-right:26px;width:190px;height:108px;background:#fff;border-radius:16px;border:1px solid var(--line);box-shadow:0 10px 24px rgba(54,55,57,.05);display:flex;align-items:center;justify-content:center;padding:24px;}
.logo-tile img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;filter:grayscale(100%);opacity:.7;transition:filter .3s,opacity .3s;}
.logo-tile img:hover{filter:grayscale(0);opacity:1;}

/* ---------- Contact info cards ---------- */
.info-card{background:#fff;border-radius:18px;padding:28px;border:1px solid rgba(54,55,57,.07);box-shadow:var(--shadow);height:100%;}
.info-card h3{font-size:18px;font-weight:700;margin-top:18px;}
.info-card a,.info-card p{color:#5b6374;font-size:15px;margin-top:8px;}
.info-card a:hover{color:var(--blue);}
.info-card .note{color:var(--muted-2);font-size:14px;margin-top:4px;}

/* ---------- FAQ accordion ---------- */
.faq-item{border:1px solid rgba(54,55,57,.1);border-radius:14px;overflow:hidden;}
.faq-q{display:flex;align-items:center;justify-content:space-between;width:100%;padding:18px 20px;border:none;background:#fff;font-weight:700;font-size:15.5px;color:var(--ink);cursor:pointer;text-align:left;}
.faq-q .ico{transition:transform .25s ease;flex-shrink:0;margin-left:14px;}
.faq-q.open{color:var(--blue);}
.faq-q.open .ico{transform:rotate(45deg);}
.faq-a{display:none;padding:0 20px 18px;color:var(--muted);font-size:14.5px;line-height:1.75;}
.faq-a.open{display:block;}

/* ---------- Footer ---------- */
.ril-footer{background:var(--dark-2);color:#cfd6e2;padding:clamp(54px,7vw,80px) 24px 28px;}
.ril-footer h4{font-size:14px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:#fff;}
.ril-footer .links{display:flex;flex-direction:column;gap:11px;margin-top:18px;font-size:14.5px;}
.ril-footer .links a:hover{color:var(--cyan);}
.ril-footer .muted{color:#9aa3b2;}
.soc{display:flex;gap:10px;margin-top:20px;}
.soc a{width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.06);display:flex;align-items:center;justify-content:center;color:#cfd6e2;font-size:16px;transition:background .25s,color .25s;}
.soc a:hover{background:var(--blue);color:#fff;}
.foot-bottom{max-width:1240px;margin:38px auto 0;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#7c8696;}

/* ---------- Back to top ---------- */
.to-top{position:fixed;right:22px;bottom:22px;z-index:900;width:50px;height:50px;border-radius:14px;border:none;background:var(--blue);color:#fff;font-size:20px;cursor:pointer;box-shadow:0 12px 28px rgba(69,116,219,.4);opacity:0;transform:translateY(16px);pointer-events:none;transition:opacity .3s,transform .3s;display:flex;align-items:center;justify-content:center;}
.to-top.show{opacity:1;transform:translateY(0);pointer-events:auto;}

/* ---------- Loader ---------- */
.loader{position:fixed;inset:0;z-index:9999;background:#2b2e34;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;transition:opacity .5s ease;}
.loader.hide{opacity:0;visibility:hidden;}
.loader img{width:62px;height:62px;animation:floaty 2s ease-in-out infinite;}
.loader .spin{width:42px;height:42px;border:3px solid rgba(255,255,255,.14);border-top-color:var(--gold);border-radius:50%;animation:spin .85s linear infinite;}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}

/* ---------- Forms ---------- */
.field label{display:block;font-size:13px;font-weight:700;color:#5b6374;margin-bottom:7px;}
.field input,.field select,.field textarea{width:100%;padding:13px 15px;border:1px solid rgba(54,55,57,.16);border-radius:12px;font-size:14.5px;color:var(--ink);background:#fbfcfe;font-family:inherit;transition:border-color .2s,box-shadow .2s;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(69,116,219,.12);}

/* ---------- Utilities ---------- */
.text-blue{color:var(--blue)!important;}
.text-gold{color:var(--gold)!important;}
.fw-800{font-weight:800;}
.muted{color:var(--muted);}
.divider-gold{width:46px;height:3px;border-radius:3px;background:var(--gold);margin:18px auto 0;}

@media (max-width:991px){
  .ril-nav .call-pill .label{display:none;}
}
@media (max-width:575px){
  .container-x{padding:0 18px;}
}