:root{--color-primary:#c38c3b;--color-primary-dark:#8f6224;--color-secondary:#3f3b37;--color-dark:#1b1a17;--color-accent:#d2aa70;--color-light:#f7f1e6;--color-muted:#89837c;--gradient-hero:linear-gradient(135deg,rgba(28,26,23,0.9),rgba(64,54,45,0.7));--font-heading:'Poppins','Helvetica Neue',Arial,sans-serif;--font-body:'Roboto','Segoe UI',Tahoma,sans-serif;--transition-base:all 0.3s ease;--shadow-soft:0 20px 40px rgba(0,0,0,0.15);--shadow-card:0 12px 24px rgba(27,26,23,0.13);} *{box-sizing:border-box;} html{scroll-behavior:smooth;} body{font-family:var(--font-body);font-size:1rem;color:var(--color-secondary);background-color:#ffffff;line-height:1.7;} a{color:var(--color-primary);text-decoration:none;transition:var(--transition-base);} a:hover{color:var(--color-primary-dark);} img{max-width:100%;height:auto;display:block;} .section-padding{padding:5rem 0;} .section-title{max-width:720px;margin:0 auto 3rem;text-align:center;} .section-title h2{font-family:var(--font-heading);font-weight:600;font-size:2.5rem;margin-bottom:0.75rem;color:var(--color-dark);} .section-title p{color:var(--color-muted);margin-bottom:0;} .btn-primary-custom{background:var(--color-primary);border:none;color:#fff;font-weight:600;padding:0.75rem 1.9rem;border-radius:999px;transition:var(--transition-base);} .btn-primary-custom:hover,.btn-primary-custom:focus{background:var(--color-primary-dark);color:#fff;} .btn-outline-custom{border-radius:999px;border:2px solid rgba(255,255,255,0.65);color:#fff;padding:0.7rem 1.8rem;font-weight:500;} .btn-outline-custom:hover,.btn-outline-custom:focus{background-color:rgba(255,255,255,0.2);color:#fff;border-color:rgba(255,255,255,0.85);} .topbar{background-color:var(--color-dark);color:rgba(255,255,255,0.85);font-size:0.9rem;} .topbar .topbar-link{color:rgba(255,255,255,0.85);margin-right:1.5rem;} .topbar .social-link{color:rgba(255,255,255,0.7);margin-left:0.75rem;} .topbar .social-link:hover{color:#fff;} .navbar{padding:1.25rem 0;transition:background 0.3s ease,padding 0.3s ease;} .navbar.sticky{background:rgba(27,26,23,0.95);backdrop-filter:blur(4px);padding:0.7rem 0;} .navbar.invert-navbar{background:rgba(255,255,255,0.98);box-shadow:0 12px 30px rgba(27,26,23,0.08);} .invert-navbar .navbar-toggler{border-color:rgba(27,26,23,0.18);} .invert-navbar .navbar-toggler-icon{filter:invert(1);} .navbar-brand{font-family:var(--font-heading);font-weight:700;font-size:1.5rem;color:#fff;letter-spacing:0.04em;text-transform:uppercase;} .navbar-brand span{color:var(--color-accent);} .navbar-nav .nav-link{color:rgba(255,255,255,0.85);font-weight:500;margin-left:1.5rem;font-size:0.95rem;} .navbar-nav .nav-link:hover,.navbar-nav .nav-link:focus,.navbar-nav .nav-link.active{color:#fff;} .hero{position:relative;min-height:100vh;display:flex;align-items:center;background:var(--gradient-hero),url('../images/hero-mine.jpg') center/cover no-repeat;color:#fff;padding:0;} .hero::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(27,26,23,0.1) 0%,rgba(27,26,23,0.6) 100%);} .hero .container{position:relative;z-index:2;} .hero >.container{width:100%;max-width:100%;padding:7rem 5vw 6rem;} .hero h1{font-family:var(--font-heading);font-size:3.4rem;font-weight:600;margin-bottom:1.5rem;} .hero p{max-width:640px;color:rgba(255,255,255,0.85);} .hero-stats{margin-top:2.5rem;display:flex;flex-wrap:wrap;gap:1.5rem;} .hero-stat{padding:1.25rem 1.5rem;background:rgba(255,255,255,0.08);border-radius:16px;min-width:180px;} .hero-stat h4{font-size:2rem;font-weight:600;margin-bottom:0.35rem;} .hero-stat span{color:rgba(255,255,255,0.7);} .feature-card{padding:2.2rem 1.75rem;background:#fff;border-radius:18px;box-shadow:var(--shadow-card);height:100%;transition:transform 0.35s ease,box-shadow 0.35s ease;} .feature-card .icon{width:56px;height:56px;border-radius:16px;background:rgba(195,140,59,0.15);color:var(--color-primary);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:1.5rem;} .feature-card:hover{transform:translateY(-10px);box-shadow:0 24px 48px rgba(27,26,23,0.18);} .service-card{border-radius:20px;overflow:hidden;background:#fff;box-shadow:var(--shadow-card);height:100%;} .service-card img{width:100%;height:220px;object-fit:cover;object-position:center;} .service-card .service-body{padding:1.8rem;} .service-card h3{font-family:var(--font-heading);font-weight:600;margin-bottom:1rem;font-size:1.4rem;} .service-card p{color:var(--color-muted);margin-bottom:1.5rem;} .link-arrow{display:inline-flex;align-items:center;font-weight:600;color:var(--color-primary);} .link-arrow i{margin-left:0.5rem;} .metrics-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem;} .metric-card{padding:2.3rem 1.6rem;background:var(--color-dark);color:#fff;border-radius:18px;position:relative;overflow:hidden;} .metric-card::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,0.05),rgba(195,140,59,0.22));opacity:0;transition:opacity 0.3s ease;} .metric-card:hover::after{opacity:1;} .metric-card h3{font-size:2.4rem;font-weight:600;margin-bottom:0.5rem;} .metric-card span{color:rgba(255,255,255,0.7);} .portfolio-card{border-radius:20px;overflow:hidden;box-shadow:var(--shadow-card);background:#fff;} .portfolio-card img{width:100%;height:240px;object-fit:cover;object-position:center;} .portfolio-card .portfolio-body{padding:1.75rem;} .testimonial-card{background:#fff;padding:2.2rem;border-radius:18px;box-shadow:var(--shadow-card);} .testimonial-card p{font-size:1.05rem;color:var(--color-secondary);} .testimonial-card .client{margin-top:1.5rem;display:flex;align-items:center;gap:1rem;} .testimonial-card .client img{width:56px;height:56px;border-radius:50%;object-fit:cover;} .testimonial-card .client span{display:block;color:var(--color-muted);font-size:0.95rem;} .avatar-circle{width:56px;height:56px;border-radius:50%;background:var(--color-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-family:var(--font-heading);letter-spacing:0.03em;} .pricing-card{background:#fff;border-radius:18px;box-shadow:var(--shadow-card);padding:2.5rem 2rem;text-align:center;transition:transform 0.35s ease,box-shadow 0.35s ease;} .pricing-card.highlight{border:2px solid rgba(195,140,59,0.4);transform:translateY(-10px);} .pricing-card:hover{transform:translateY(-12px);box-shadow:0 28px 56px rgba(27,26,23,0.2);} .pricing-card h4{font-family:var(--font-heading);font-weight:600;margin-bottom:0.75rem;} .pricing-card .price{font-size:2.5rem;font-weight:600;color:var(--color-primary);margin-bottom:0.75rem;} .pricing-card ul{list-style:none;padding:0;margin:1.5rem 0;text-align:left;} .pricing-card ul li{margin-bottom:0.65rem;display:flex;align-items:center;gap:0.6rem;color:var(--color-secondary);} .pricing-card ul li i{color:var(--color-primary);} .blog-card{background:#fff;border-radius:18px;overflow:hidden;box-shadow:var(--shadow-card);height:100%;} .blog-card img{width:100%;height:220px;object-fit:cover;object-position:center;} .blog-card .blog-body{padding:1.75rem;} .blog-card .meta{font-size:0.85rem;letter-spacing:0.08em;font-weight:600;text-transform:uppercase;color:var(--color-primary);margin-bottom:0.75rem;} .blog-card h3{font-size:1.35rem;font-weight:600;margin-bottom:1rem;} .blog-card p{color:var(--color-muted);} .faq-item{border:1px solid rgba(195,140,59,0.3);border-radius:16px;padding:1.5rem;margin-bottom:1rem;background:#fff;} .faq-item h5{font-size:1.15rem;font-weight:600;margin-bottom:0.75rem;} .timeline{position:relative;padding-left:2.5rem;} .timeline::before{content:'';position:absolute;left:0.9rem;top:0.5rem;bottom:0.5rem;width:2px;background:rgba(195,140,59,0.35);} .timeline-item{position:relative;margin-bottom:2rem;} .timeline-item::before{content:'';position:absolute;left:-1.1rem;top:0;width:12px;height:12px;border-radius:50%;background:var(--color-primary);} .cta-banner{background:linear-gradient(120deg,rgba(27,26,23,0.96),rgba(63,59,55,0.88));color:#fff;border-radius:20px;padding:3.5rem;position:relative;overflow:hidden;} .cta-banner::after{content:'';position:absolute;inset:0;background:radial-gradient(circle at top right,rgba(195,140,59,0.2),transparent 50%);} .cta-banner .content{position:relative;z-index:2;} .contact-card{background:#fff;padding:2.5rem;border-radius:20px;box-shadow:var(--shadow-card);height:100%;} .contact-card h4{font-weight:600;margin-bottom:1.5rem;} .contact-card .info-item{display:flex;gap:1rem;margin-bottom:1.25rem;} .contact-card .info-item i{font-size:1.4rem;color:var(--color-primary);} .form-control-custom{border-radius:12px;border:1px solid rgba(27,26,23,0.15);padding:0.9rem 1.1rem;background:rgba(255,255,255,0.9);transition:border 0.3s ease,box-shadow 0.3s ease;} .form-control-custom:focus{border-color:var(--color-primary);box-shadow:0 0 0 0.25rem rgba(195,140,59,0.2);} .footer{background:#0f0e0b;color:rgba(255,255,255,0.75);padding:4rem 0 2rem;} .footer h5{font-weight:600;color:#fff;margin-bottom:1.5rem;} .footer .footer-link{color:rgba(255,255,255,0.75);margin-bottom:0.6rem;display:block;} .footer .footer-link:hover{color:var(--color-accent);} .footer-logo{font-family:var(--font-heading);font-size:1.3rem;font-weight:700;letter-spacing:0.05em;color:#fff;margin-bottom:1rem;} .footer .social-link{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,0.1);display:inline-flex;align-items:center;justify-content:center;margin-right:0.5rem;color:#fff;} .footer .social-link:hover{background:var(--color-primary);} .footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding-top:1.5rem;margin-top:2.5rem;text-align:center;font-size:0.9rem;} .page-hero{background:var(--gradient-hero),var(--page-hero,url('../images/Open_pit_mine.jpg')) center/cover no-repeat;padding:6rem 0 5rem;position:relative;color:#fff;} .page-hero::after{content:'';position:absolute;inset:0;background:rgba(27,26,23,0.6);} .page-hero .container{position:relative;z-index:2;} .page-hero h1{font-family:var(--font-heading);font-weight:600;font-size:3rem;margin-bottom:0.75rem;} .breadcrumb{margin-bottom:0;background:none;padding:0;color:rgba(255,255,255,0.8);} .breadcrumb a{color:rgba(255,255,255,0.8);} .invert-navbar .navbar-brand,.invert-navbar .navbar-nav .nav-link{color:var(--color-dark);} .invert-navbar .navbar-nav .nav-link:hover,.invert-navbar .navbar-nav .nav-link:focus,.invert-navbar .navbar-nav .nav-link.active{color:var(--color-primary);} .table-custom thead{background:rgba(195,140,59,0.15);} .table-custom th{font-weight:600;color:var(--color-secondary);} .table-custom tbody tr:hover{background:rgba(247,241,230,0.45);} .badge-soft{background:rgba(195,140,59,0.2);color:var(--color-primary);padding:0.4rem 0.85rem;border-radius:999px;font-weight:500;} .values-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem;} .value-card{border:1px solid rgba(195,140,59,0.25);border-radius:16px;padding:1.75rem;background:#fff;transition:transform 0.3s ease,border 0.3s ease;} .value-card:hover{transform:translateY(-8px);border-color:rgba(195,140,59,0.5);} .sustainability-card{background:#fff;border-radius:18px;padding:2rem;box-shadow:var(--shadow-card);height:100%;} .stat-highlight{font-size:3rem;font-weight:600;color:var(--color-primary);} .list-check{list-style:none;padding:0;margin:0;} .list-check li{display:flex;align-items:center;gap:0.75rem;margin-bottom:0.65rem;} .list-check li i{color:var(--color-primary);} .map-wrapper iframe{border:0;width:100%;min-height:320px;border-radius:18px;box-shadow:var(--shadow-card);} .back-to-top{position:fixed;right:1.5rem;bottom:1.5rem;width:48px;height:48px;border-radius:50%;background:var(--color-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.4rem;box-shadow:var(--shadow-card);opacity:0;visibility:hidden;transition:var(--transition-base);z-index:1050;} .back-to-top.show{opacity:1;visibility:visible;} @media (max-width:1199.98px){.navbar-nav .nav-link{margin-left:0;padding:0.75rem 0;color:var(--color-secondary);} .navbar{background:rgba(255,255,255,0.98);} .navbar.sticky{background:rgba(27,26,23,0.98);} .navbar.sticky .nav-link{color:rgba(255,255,255,0.85);}} @media (max-width:991.98px){.hero{min-height:auto;} .hero >.container{padding:5rem 2rem 4rem;} .hero h1{font-size:2.75rem;} .hero-stats{gap:1rem;} .hero-stat{min-width:45%;} .section-padding{padding:4rem 0;} .section-title h2{font-size:2.2rem;}} @media (max-width:767.98px){.topbar{text-align:center;} .topbar .d-flex{flex-direction:column;gap:0.5rem;} .hero h1{font-size:2.3rem;} .hero-stat{min-width:100%;} .pricing-card{padding:2rem 1.5rem;} .cta-banner{padding:2.5rem 2rem;} .page-hero{padding:4.5rem 0 3.5rem;} .page-hero h1{font-size:2.2rem;}} @media (max-width:575.98px){body{font-size:0.98rem;} .section-padding{padding:3.5rem 0;} .hero{padding:5rem 0 4rem;} .hero-stat h4{font-size:1.7rem;} .metrics-grid{grid-template-columns:1fr;}}