/* Thuli Drilling — matches Thulisizwe Group structure, industrial yellow accent */
:root {
  --primary: #1a1a1a;
  --primary-mid: #2a2a2a;
  --primary-light: #3d3d3d;
  --accent: #e8b923;
  --accent-hover: #f5c93a;
  --accent-dark: #c49a14;
  --text: #1a1a1a;
  --text-muted: #5a5a5a;
  --bg: #ffffff;
  --bg-alt: #f5f5f5;
  --bg-dark: #111111;
  --border: #e0e0e0;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
  --radius: 10px;
  --radius-lg: 16px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  line-height: 1.65;
  background: var(--bg);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s, opacity 0.2s; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--primary);
}
h1 { font-size: clamp(2.2rem, 4.5vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.35rem); margin-bottom: 0.9rem; }
h3 { font-size: 1.3rem; }
p { color: var(--text-muted); }

.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 0.7rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
}
.btn-primary {
  background: var(--accent);
  color: #111;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(232, 185, 35, 0.4);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.75);
}
.btn-outline:hover {
  background: #fff;
  color: #111;
}
.btn-dark {
  background: var(--primary);
  color: #fff;
}
.btn-dark:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(17, 17, 17, 0.97);
  backdrop-filter: blur(14px);
  transition: box-shadow 0.3s;
}
.header.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,0.35); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.logo img {
  height: 64px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav a {
  color: rgba(255,255,255,0.88);
  font-size: 0.93rem;
  font-weight: 500;
}
.nav a:hover,
.nav a.active { color: var(--accent); }
.nav .btn { padding: 10px 18px; font-size: 0.88rem; }

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.45rem;
  cursor: pointer;
}

.page-banner {
  position: relative;
  height: 340px;
  margin-top: 78px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.page-banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.page-banner-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(17,17,17,0.88) 0%, rgba(17,17,17,0.65) 100%);
}
.page-banner .container { position: relative; z-index: 1; }
.page-banner h1 { color: #fff; margin-bottom: 0.5rem; }
.page-banner p {
  color: rgba(255,255,255,0.85);
  font-size: 1.1rem;
  max-width: 560px;
}
.breadcrumb {
  display: flex;
  gap: 8px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 12px;
}
.breadcrumb a { color: var(--accent); }
.breadcrumb span { opacity: 0.6; }

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 78px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(17,17,17,0.88) 0%, rgba(17,17,17,0.7) 55%, rgba(30,30,30,0.65) 100%),
              url('../images/banner-hero.jpg') center/cover no-repeat;
  z-index: 0;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 580px;
  margin-left: auto;
  padding: 70px 0;
}
.hero h1 { color: #fff; margin-bottom: 1.1rem; }
.hero h1 span { color: var(--accent); }
.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.88);
  margin-bottom: 1.8rem;
  max-width: 520px;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-stat strong {
  display: block;
  font-size: 1.5rem;
  color: var(--accent);
  font-weight: 700;
}
.hero-stat span {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.7);
}

section { padding: 90px 0; }
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 50px;
}
.section-header p { font-size: 1.05rem; }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px 26px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}
.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: transparent;
}
.service-card:hover::before { transform: scaleY(1); }
.service-icon {
  width: 54px; height: 54px;
  background: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 1.35rem;
}
.service-card h3 { margin-bottom: 10px; }
.service-card p { font-size: 0.94rem; }

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.pillar {
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
}
.pillar h3 {
  color: var(--accent-dark);
  margin-bottom: 10px;
  font-size: 1.1rem;
}
.pillar p { font-size: 0.93rem; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.list-block h3 {
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}
.list-block ul li {
  padding: 8px 0;
  padding-left: 28px;
  position: relative;
  color: var(--text-muted);
  font-size: 0.95rem;
}
.list-block ul li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-dark);
  font-weight: 700;
}

.stats {
  background: var(--bg-dark);
  color: #fff;
  padding: 70px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
  text-align: center;
}
.stat-item strong {
  display: block;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}
.stat-item p {
  color: rgba(255,255,255,0.8);
  font-size: 0.95rem;
  max-width: 260px;
  margin: 0 auto;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}
.about-content .section-label { text-align: left; }
.about-content p {
  margin-bottom: 1.1rem;
  font-size: 1.02rem;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.why-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  transition: all 0.3s ease;
}
.why-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.why-card h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  color: var(--accent-dark);
}
.why-card p { font-size: 0.92rem; }

.hseq-banner {
  background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
  color: #fff;
  padding: 60px 0;
  text-align: center;
}
.hseq-banner h2 { color: #fff; margin-bottom: 0.5rem; }
.hseq-banner .tagline {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.9rem;
  margin-bottom: 1.2rem;
}
.hseq-banner p {
  color: rgba(255,255,255,0.85);
  max-width: 640px;
  margin: 0 auto 1.5rem;
}

.cta-banner {
  background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
  padding: 70px 0;
  text-align: center;
}
.cta-banner h2 { color: #fff; margin-bottom: 0.8rem; }
.cta-banner p {
  color: rgba(255,255,255,0.85);
  font-size: 1.1rem;
  max-width: 500px;
  margin: 0 auto 1.6rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 44px;
}
.contact-info h2 { margin-bottom: 0.9rem; }
.contact-info > p { margin-bottom: 1.8rem; }
.contact-details { display: flex; flex-direction: column; gap: 18px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.contact-item i {
  width: 42px; height: 42px;
  background: var(--bg-alt);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-dark);
  font-size: 1.05rem;
  flex-shrink: 0;
}
.contact-item strong {
  display: block;
  font-size: 0.88rem;
  color: var(--text);
  margin-bottom: 2px;
}
.contact-item span, .contact-item a {
  font-size: 0.93rem;
  color: var(--text-muted);
}
.contact-item a:hover { color: var(--accent-dark); }

.contact-form {
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 5px;
  color: var(--text);
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.93rem;
  background: #fff;
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(232, 185, 35, 0.2);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.form-message {
  padding: 14px 18px;
  border-radius: 8px;
  margin-bottom: 18px;
  font-size: 0.93rem;
  display: none;
}
.form-message.success {
  display: block;
  background: #e8f5e9;
  color: #1b5e20;
  border: 1px solid #a5d6a7;
}
.form-message.error {
  display: block;
  background: #fce8e6;
  color: #b71c1c;
  border: 1px solid #ef9a9a;
}

.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.75);
  padding: 60px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 44px;
}
.footer-brand img {
  height: 56px;
  margin-bottom: 14px;
}
.footer-brand p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  max-width: 280px;
}
.footer h4 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 14px;
}
.footer ul li { margin-bottom: 9px; }
.footer ul a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.62);
}
.footer ul a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
}
.socials { display: flex; gap: 10px; }
.socials a {
  width: 34px; height: 34px;
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: background 0.2s;
}
.socials a:hover { background: var(--accent); color: #111; }

@media (max-width: 1024px) {
  .services-grid { grid-template-columns: 1fr 1fr; }
  .pillars, .why-grid { grid-template-columns: 1fr 1fr; }
  .about-grid, .two-col { grid-template-columns: 1fr; gap: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav { display: none; }
  .nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 78px; left: 0; right: 0;
    background: #111;
    padding: 22px;
    gap: 14px;
  }
  .mobile-toggle { display: block; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .services-grid,
  .pillars,
  .stats-grid,
  .why-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 14px; text-align: center; }
  section { padding: 60px 0; }
  .page-banner { height: 260px; }
}