:root {
  --bg: #ffffff;
  --panel: #f6f6f6;
  --text: #0a0a0a;
  --muted: #4a4a4a;
  --brand: #6B9441; /* green */
  --brand-2: #B6733F; /* copper */
  --card: #ffffff;
  --border: #e6e6e6;
  --focus: #cfe6b9;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

img { max-width: 100%; height: auto; }
 a { color: var(--text); text-decoration: none; }
 a[aria-disabled="true"] { opacity: .6; cursor: not-allowed; }

.container { width: min(1200px, 92%); margin: 0 auto; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: #ffffff;
}
.header-inner { 
  display: flex; 
  align-items: center; 
  justify-content: space-between; 
  height: 64px; 
  position: relative;
}
.brand { 
  display: inline-flex; 
  align-items: center; 
  gap: 10px; 
  font-weight: 700; 
  flex-shrink: 0;
  z-index: 51;
}
.brand img { 
  border: none; 
  outline: none; 
  display: block; 
  max-height: 64px; 
  height: auto; 
  width: auto;
}

.site-nav { display: flex; gap: 18px; align-items: center; }
.site-nav a { color: var(--muted); font-weight: 500; }
.site-nav a:hover { color: var(--text); }

.nav-toggle { 
  display: none; 
  background: none; 
  border: 0; 
  padding: 8px; 
  z-index: 51;
  position: relative;
}
.nav-toggle-bar { display: block; width: 22px; height: 2px; background: var(--text); margin: 4px 0; }

/* Buttons */
/* remove button chrome from nav; general buttons retain styling elsewhere */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 16px; border-radius: 8px; border: 1px solid var(--border); background: var(--card); color: var(--text); font-weight: 600; }
.btn:hover { border-color: var(--brand); }
.btn-sm { padding: 8px 12px; font-size: 14px; }
.btn-primary { background: var(--brand); border-color: transparent; color: #fff; }
.btn-primary:hover { filter: brightness(1.1); }
.btn-ghost { background: transparent; border-color: var(--border); }

/* Hero */
.hero {
  position: relative; min-height: 82vh; display: grid; place-items: center;
}
.hero-media {
  position: absolute; inset: 0;
  background:
    radial-gradient(60% 60% at 70% 10%, rgba(107,148,65,0.15), transparent 60%),
    radial-gradient(50% 50% at 20% 30%, rgba(182,115,63,0.15), transparent 70%),
    url('mining.jpg') center/cover no-repeat;
  filter: saturate(0.95) contrast(1.05) brightness(0.9);
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.3) 50%, rgba(0,0,0,0.1) 100%);
}
.hero-content {
  position: relative; z-index: 2; text-align: center; padding: 80px 0; color: #ffffff;
}
.hero h1 { 
  color: #ffffff; 
  font-size: clamp(28px, 5vw, 56px); line-height: 1.1; margin: 0 0 12px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.5);
}
.hero p {
  color: rgba(255,255,255,0.95); font-size: clamp(16px, 2.1vw, 20px); margin: 0 auto 20px; max-width: 760px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.hero-cta { display: flex; gap: 12px; justify-content: center; margin-top: 12px; }
.hero-stats {
  display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px;
  margin: 28px auto 0; padding: 0; list-style: none; max-width: 680px;
}
.hero-stats li { background: rgba(20,20,20,0.7); border: 1px solid var(--border); border-radius: 10px; padding: 12px; }
.stat { font-weight: 800; font-size: 18px; display: block; }
.label { color: var(--muted); font-size: 13px; }

/* scroll indicator removed */
.scroll-indicator { display: none; }

/* Sections */
.section { padding: 72px 0; background: var(--bg); }
.section.alt { background: var(--panel); }
.lead { color: var(--muted); margin-top: -4px; margin-bottom: 24px; }

.grid { display: grid; gap: 24px; }
.two-col { grid-template-columns: 1.2fr 1fr; }
.three-col { grid-template-columns: repeat(3, 1fr); }
.four-col { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 28px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.cards .card h3 { margin-top: 0; margin-bottom: 16px; color: var(--text); font-size: 20px; }
.card .icon { 
  color: var(--brand); 
  margin-bottom: 24px; 
  font-size: 48px; 
  text-align: center; 
  margin-left: auto; 
  margin-right: auto;
  display: flex; 
  align-items: center; 
  justify-content: center;
}
.card .icon i { display: block; }
.cards .card p { line-height: 1.7; color: var(--muted); }

/* Leadership section */
.leadership-card { text-align: center; }
.leadership-avatar {
  width: 120px; height: 120px; margin: 0 auto 16px;
  border-radius: 50%; border: 2px solid var(--border);
  overflow: hidden; background: var(--panel);
}
.leadership-avatar img {
  width: 100%; height: 100%; object-fit: cover; object-position: center top; display: block;
}
.leadership-card h3 { margin-top: 0; }
.leadership-card p { text-align: left; }

.checklist { padding-left: 18px; }
.checklist li { margin: 6px 0; }

.badges { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; list-style: none; }
.badges li {
  border: 1px solid var(--border); border-radius: 999px; padding: 6px 10px; background: rgba(255,255,255,0.03);
  font-size: 13px; color: var(--muted);
}

/* KPIs */
.kpis { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; align-content: start; }
.kpi {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px; background: rgba(255,255,255,0.02);
}
.kpi-label { color: var(--muted); }
.kpi-value { font-weight: 800; }

/* News cards links */
.links { padding-left: 18px; }
.links li { margin: 8px 0; }

/* Contact */
#contact h2 { color: var(--brand); margin-bottom: 12px; font-size: 32px; }
#contact > .container > div > p {
  font-size: 18px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 500px;
}
.contact-form { 
  background: var(--card); 
  padding: 32px; 
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  border: 2px solid var(--border);
  border-radius: 16px;
}
.contact-form .form-row { display: grid; gap: 10px; margin-bottom: 20px; }
.contact-form label {
  font-weight: 600;
  color: var(--text);
  font-size: 14px;
  margin-bottom: 4px;
}
input, textarea {
  background: #ffffff; border: 2px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 14px 18px; font: inherit;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  font-size: 15px;
}
input:focus, textarea:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(107, 148, 65, 0.12);
  outline: none;
}
textarea { resize: vertical; min-height: 120px; }
.form-note { color: var(--muted); margin-top: 12px; min-height: 20px; font-size: 14px; }
.form-note.success { color: var(--brand); font-weight: 500; }
.form-note.error { color: #d32f2f; font-weight: 500; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: #fafafa; color: var(--muted); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; }
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-brand img { height: 26px; width: auto; opacity: 0.35; filter: grayscale(1); }
.footer-nav { display: flex; gap: 16px; }
.footer-nav a { color: var(--muted); }
.footer-nav a:hover { color: var(--text); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* Social sidebar */
.social-bar {
  position: fixed; top: 40%; left: 18px; z-index: 60;
  display: flex; flex-direction: column; gap: 10px;
}
.social-bar a {
  width: 36px; height: 36px; border-radius: 999px; display: grid; place-items: center;
  background: var(--card); border: 1px solid var(--border); color: var(--muted);
}
.social-bar a:hover { color: var(--text); border-color: var(--brand); }

/* Responsive */
@media (max-width: 960px) {
  .two-col { grid-template-columns: 1fr; }
  .three-col { grid-template-columns: 1fr 1fr; }
  .four-col { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .site-header { 
    height: auto; 
    min-height: 64px; 
    position: sticky;
    top: 0;
    z-index: 50;
  }
  .header-inner { 
    height: auto; 
    min-height: 64px; 
    padding: 8px 0; 
    flex-wrap: nowrap;
  }
  .brand { 
    flex-shrink: 0;
    max-width: calc(100% - 50px);
  }
  .brand img { 
    height: 48px !important; 
    max-height: 48px; 
    width: auto;
  }
  .site-nav { 
    display: none;
    position: fixed; 
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98); 
    backdrop-filter: blur(8px);
    flex-direction: column; 
    align-items: flex-start; 
    gap: 12px; 
    padding: 16px; 
    border-bottom: 1px solid var(--border); 
    transform: translateY(-110%); 
    transition: transform .25s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    z-index: 49;
  }
  .site-nav.open { 
    display: flex;
    transform: translateY(0%); 
  }
  .nav-toggle { display: inline-block; }
  .three-col { grid-template-columns: 1fr; }
  .four-col { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr; }
  .social-bar { left: 10px; top: auto; bottom: 18px; flex-direction: row; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
  .footer-nav { flex-wrap: wrap; justify-content: center; }
}