/* =============================================
   SRT MINING GROUP — Main Stylesheet
   ============================================= */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:       #0c2340;
  --navy-mid:   #1a3a5c;
  --navy-light: #2a5080;
  --teal:       #0a7ea4;
  --gold:       #e8a020;
  --light:      #f5f7fa;
  --white:      #ffffff;
  --text:       #1a2332;
  --text-mid:   #4a5568;
  --text-light: #8aaac0;
  --border:     #d0dce8;
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --font-sans:  'Helvetica Neue', Arial, sans-serif;
  --max-w:      1200px;
  --section-pad: 90px 24px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--white);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ---- UTILITY ---- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}
.btn {
  display: inline-block;
  padding: 14px 32px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
}
.btn-primary { background: var(--gold); color: var(--navy); border-color: var(--gold); }
.btn-primary:hover { background: transparent; color: var(--gold); }
.btn-outline { background: transparent; color: var(--white); border-color: var(--white); }
.btn-outline:hover { background: var(--white); color: var(--navy); }
.btn-dark { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-dark:hover { background: var(--navy); color: var(--white); }

/* ---- NAVIGATION ---- */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
#navbar.scrolled {
  background: var(--navy);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
#navbar.scrolled .nav-logo-text { color: var(--white); }

.nav-logo { display: flex; align-items: center; gap: 12px; }
.nav-logo svg { height: 44px; width: auto; }
.nav-logo-text {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--white);
  line-height: 1.2;
}
.nav-logo-text span {
  display: block;
  font-weight: 300;
  letter-spacing: 4px;
  font-size: 13px;
}

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  color: rgba(255,255,255,0.85);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 8px 12px;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--gold); }
.nav-links .nav-cta {
  background: var(--gold);
  color: var(--navy);
  padding: 8px 18px;
  margin-left: 8px;
  font-weight: 700;
}
.nav-links .nav-cta:hover { background: var(--white); color: var(--navy); }

.nav-hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-hamburger span { width: 24px; height: 2px; background: var(--white); transition: all 0.3s; }

/* ---- HERO ---- */
#hero {
  height: 100vh;
  min-height: 680px;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--navy);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(12,35,64,0.97) 0%, rgba(26,58,92,0.85) 50%, rgba(10,126,164,0.4) 100%);
  z-index: 1;
}

/* Subtle geometric pattern */
.hero-pattern {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.06;
  background-image:
    repeating-linear-gradient(60deg, #fff 0, #fff 1px, transparent 0, transparent 50%),
    repeating-linear-gradient(-60deg, #fff 0, #fff 1px, transparent 0, transparent 50%);
  background-size: 60px 60px;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
  padding-top: 80px;
}

.hero-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp 0.8s 0.3s forwards;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(38px, 5vw, 68px);
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
  max-width: 820px;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 0.8s 0.5s forwards;
}

.hero-title em { color: var(--gold); font-style: normal; }

.hero-sub {
  font-size: 17px;
  color: rgba(255,255,255,0.75);
  max-width: 540px;
  margin-bottom: 44px;
  line-height: 1.8;
  opacity: 0;
  animation: fadeUp 0.8s 0.7s forwards;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.8s 0.9s forwards;
}

.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: bounce 2s infinite;
}
.hero-scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.3);
}

/* ---- STATS BAR ---- */
#stats-bar {
  background: var(--gold);
  padding: 0;
}
.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: var(--max-w);
  margin: 0 auto;
}
.stat-item {
  padding: 36px 32px;
  border-right: 1px solid rgba(12,35,64,0.15);
  text-align: center;
}
.stat-item:last-child { border-right: none; }
.stat-number {
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgba(12,35,64,0.65);
}

/* ---- ABOUT ---- */
#about {
  padding: var(--section-pad);
  background: var(--white);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  max-width: var(--max-w);
  margin: 0 auto;
}
.about-text h2 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
  margin-bottom: 24px;
}
.about-text p { color: var(--text-mid); margin-bottom: 18px; font-size: 15.5px; }
.about-text p:last-of-type { margin-bottom: 32px; }
.about-visual {
  background: var(--navy);
  border-radius: 2px;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.about-visual-inner {
  text-align: center;
  color: rgba(255,255,255,0.15);
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.about-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(45deg, rgba(232,160,32,0.05) 0, rgba(232,160,32,0.05) 1px, transparent 0, transparent 50%);
  background-size: 30px 30px;
}
.about-badge {
  position: absolute;
  bottom: 24px;
  right: 24px;
  background: var(--gold);
  color: var(--navy);
  padding: 16px 20px;
  text-align: center;
}
.about-badge strong { display: block; font-size: 22px; font-family: var(--font-serif); }
.about-badge span { font-size: 10px; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; }

/* ---- OPERATIONS ---- */
#operations {
  padding: var(--section-pad);
  background: var(--light);
}
.operations-inner { max-width: var(--max-w); margin: 0 auto; }
.section-header { margin-bottom: 56px; }
.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3vw, 40px);
  color: var(--navy);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-header p { color: var(--text-mid); max-width: 640px; font-size: 15.5px; }

.ops-hero-card {
  background: var(--navy);
  padding: 56px 64px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}
.ops-hero-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(45deg, rgba(10,126,164,0.04) 0, rgba(10,126,164,0.04) 1px, transparent 0, transparent 40px);
}
.ops-hero-card h3 {
  font-family: var(--font-serif);
  font-size: 30px;
  color: var(--white);
  font-weight: 700;
  margin-bottom: 6px;
}
.ops-hero-card .ops-location {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}
.ops-hero-card p { color: rgba(255,255,255,0.7); font-size: 15px; margin-bottom: 20px; }
.ops-hero-card .ops-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}
.ops-spec { border-left: 3px solid var(--gold); padding-left: 14px; }
.ops-spec strong { display: block; color: var(--white); font-size: 20px; font-family: var(--font-serif); }
.ops-spec span { font-size: 11px; color: rgba(255,255,255,0.5); letter-spacing: 1px; text-transform: uppercase; }

.ops-visual {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.ops-visual-label {
  color: rgba(255,255,255,0.15);
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.ops-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 0;
}
.ops-card {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 32px 28px;
  transition: box-shadow 0.25s, transform 0.25s;
}
.ops-card:hover { box-shadow: 0 8px 32px rgba(12,35,64,0.1); transform: translateY(-3px); }
.ops-card-icon {
  width: 44px;
  height: 44px;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.ops-card-icon svg { width: 22px; height: 22px; stroke: var(--gold); fill: none; stroke-width: 1.5; }
.ops-card h4 { font-family: var(--font-serif); font-size: 19px; color: var(--navy); margin-bottom: 12px; }
.ops-card p { color: var(--text-mid); font-size: 14px; line-height: 1.7; }

/* ---- SUSTAINABILITY ---- */
#sustainability {
  background: var(--navy);
  padding: var(--section-pad);
  position: relative;
  overflow: hidden;
}
#sustainability::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-45deg, rgba(10,126,164,0.05) 0, rgba(10,126,164,0.05) 1px, transparent 0, transparent 40px);
}
.sust-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.sust-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-bottom: 72px;
}
.sust-top h2 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3vw, 44px);
  color: var(--white);
  font-weight: 700;
  line-height: 1.2;
}
.sust-top p { color: rgba(255,255,255,0.65); font-size: 15.5px; margin-bottom: 28px; }
.sust-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.sust-pillar {
  border-top: 3px solid var(--gold);
  padding-top: 28px;
}
.sust-pillar h4 { color: var(--white); font-size: 17px; margin-bottom: 12px; font-family: var(--font-serif); }
.sust-pillar p { color: rgba(255,255,255,0.55); font-size: 14px; line-height: 1.7; }

/* ---- COMMUNITY ---- */
#community {
  padding: var(--section-pad);
  background: var(--white);
}
.community-inner { max-width: var(--max-w); margin: 0 auto; }
.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 56px;
}
.community-card {
  border: 1px solid var(--border);
  overflow: hidden;
  transition: box-shadow 0.25s;
}
.community-card:hover { box-shadow: 0 8px 32px rgba(12,35,64,0.1); }
.community-card-img {
  background: var(--navy-mid);
  height: 180px;
  position: relative;
  overflow: hidden;
}
.community-card-img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.community-card-img .img-label {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-light);
}
.community-card-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  opacity: 0.08;
}
.community-card-body { padding: 24px; }
.community-card-body .card-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 10px;
}
.community-card-body h4 { font-family: var(--font-serif); font-size: 18px; color: var(--navy); margin-bottom: 10px; }
.community-card-body p { font-size: 13.5px; color: var(--text-mid); line-height: 1.7; }

/* ---- NEWS ---- */
#news {
  padding: var(--section-pad);
  background: var(--light);
}
.news-inner { max-width: var(--max-w); margin: 0 auto; }
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 56px;
}
.news-card {
  background: var(--white);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: box-shadow 0.25s, transform 0.25s;
}
.news-card:hover { box-shadow: 0 8px 32px rgba(12,35,64,0.1); transform: translateY(-3px); }
.news-card-top {
  height: 8px;
  background: var(--navy);
}
.news-card-body { padding: 28px; }
.news-date {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 12px;
}
.news-card-body h4 {
  font-family: var(--font-serif);
  font-size: 19px;
  color: var(--navy);
  line-height: 1.3;
  margin-bottom: 12px;
}
.news-card-body p { font-size: 14px; color: var(--text-mid); line-height: 1.7; margin-bottom: 20px; }
.news-link {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s;
}
.news-link:hover { gap: 10px; }

/* ---- GOVERNANCE STRIP ---- */
#governance {
  background: var(--navy-mid);
  padding: 56px 24px;
}
.gov-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.gov-text h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  color: var(--white);
  margin-bottom: 8px;
}
.gov-text p { color: rgba(255,255,255,0.6); font-size: 15px; }

/* ---- FOOTER ---- */
footer {
  background: var(--navy);
  padding: 72px 24px 0;
}
.footer-top {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 280px 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand svg { height: 50px; width: auto; margin-bottom: 16px; }
.footer-brand p { color: rgba(255,255,255,0.45); font-size: 13px; line-height: 1.8; }
.footer-col h5 {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,0.5); font-size: 13.5px; transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--white); }
.footer-contact { color: rgba(255,255,255,0.5); font-size: 13.5px; line-height: 2; }
.footer-contact strong { color: rgba(255,255,255,0.8); display: block; margin-bottom: 4px; }

.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p { color: rgba(255,255,255,0.3); font-size: 12px; }
.footer-bottom-links { display: flex; gap: 24px; }
.footer-bottom-links a { color: rgba(255,255,255,0.3); font-size: 12px; transition: color 0.2s; }
.footer-bottom-links a:hover { color: rgba(255,255,255,0.7); }

/* ---- HERO IMAGE ---- */
.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
  opacity: 0.35;
}

/* ---- RECORD BANNER ---- */
.record-banner {
  background: #b5370a;
  padding: 14px 24px;
  color: white;
}
.record-banner .container {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.record-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  background: rgba(255,255,255,0.15);
  padding: 4px 10px;
  flex-shrink: 0;
}
.record-text { font-size: 13.5px; flex: 1; }
.record-text strong { font-weight: 700; }
.record-link {
  font-size: 12px;
  font-weight: 700;
  color: rgba(255,255,255,0.75);
  white-space: nowrap;
  transition: color 0.2s;
}
.record-link:hover { color: white; }

/* ---- PERFORMANCE STRIP ---- */
.perf-strip {
  background: var(--navy);
  padding: 48px 24px;
}
.perf-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  justify-items: center;
}
.perf-item {
  text-align: center;
  padding: 0 32px;
  width: 100%;
}
.perf-num {
  font-family: var(--font-serif);
  font-size: 44px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 6px;
}
.perf-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
}
.perf-divider {
  width: 1px;
  height: 56px;
  background: rgba(255,255,255,0.12);
  flex-shrink: 0;
}

/* ---- PEOPLE STRIP ---- */
.people-strip {
  display: grid;
  grid-template-columns: 1fr 420px;
  min-height: 480px;
}
.people-img-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr;
  overflow: hidden;
}
.people-img-item {
  overflow: hidden;
  background: var(--navy-mid);
}
.people-img-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: brightness(0.85);
  transition: transform 0.5s ease;
}
.people-img-item:hover img { transform: scale(1.04); }
.people-img-tall { grid-row: span 1; }
.people-text {
  background: var(--navy);
  padding: 64px 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.people-text h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  color: var(--white);
  margin-bottom: 16px;
  line-height: 1.3;
}
.people-text p { color: rgba(255,255,255,0.6); font-size: 15px; line-height: 1.8; }

/* ---- ANIMATIONS ---- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  :root { --section-pad: 64px 20px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .ops-hero-card { grid-template-columns: 1fr; padding: 36px 28px; }
  .ops-cards { grid-template-columns: 1fr 1fr; }
  .sust-top { grid-template-columns: 1fr; gap: 32px; }
  .sust-pillars { grid-template-columns: 1fr 1fr; }
  .stats-inner { grid-template-columns: 1fr 1fr; }
  .community-grid, .news-grid { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  #navbar { padding: 0 20px; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .hero-content { padding: 0 20px; padding-top: 80px; }
  .ops-cards { grid-template-columns: 1fr; }
  .sust-pillars { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: 1fr 1fr; }
  .community-grid, .news-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .gov-inner { flex-direction: column; }
}