/* Ditholo Consulting Engineers — Brand Design System */
:root {
  --green: #2d8f3c;
  --green-light: #3cb34d;
  --green-dark: #1f6b2b;
  --charcoal: #2a2a2a;
  --charcoal-soft: #3d3d3d;
  --gray-900: #1a1a1a;
  --gray-700: #4a4a4a;
  --gray-500: #737373;
  --gray-300: #c4c4c4;
  --gray-100: #f0f2f0;
  --white: #ffffff;
  --off-white: #f7f9f7;
  --gradient-brand: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
  --gradient-dark: linear-gradient(180deg, var(--charcoal) 0%, var(--gray-900) 100%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.18);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --font-display: "Outfit", system-ui, sans-serif;
  --font-body: "Plus Jakarta Sans", system-ui, sans-serif;
  --header-height: 84px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--gray-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

ul, ol { list-style: none; }

.container { width: min(1200px, 92vw); margin-inline: auto; }

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  padding: 0.75rem 1.25rem;
  background: var(--green);
  color: var(--white);
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.skip-link:focus { top: 1rem; }

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1002;
  height: var(--header-height);
  background: rgba(42, 42, 42, 0.97);
  border-bottom: 1px solid rgba(45, 143, 60, 0.2);
  transition: box-shadow var(--transition);
}

.header.scrolled { box-shadow: var(--shadow-md); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo img {
  width: 52px;
  height: auto;
  object-fit: contain;
}

.logo-text { display: flex; flex-direction: column; line-height: 1.2; }

.logo-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--green-light);
  letter-spacing: 0.04em;
}

.logo-tag {
  font-size: 0.68rem;
  color: var(--gray-300);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
}

.nav-links a:hover,
.nav-links a.active { color: var(--green-light); }

.nav-cta {
  padding: 0.6rem 1.25rem !important;
  background: var(--green);
  color: var(--white) !important;
  border-radius: var(--radius-sm);
  font-weight: 600 !important;
}

.nav-cta:hover { background: var(--green-light); color: var(--white) !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: var(--transition);
}

/* Hero */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(26, 26, 26, 0.92) 0%, rgba(26, 26, 26, 0.55) 55%, rgba(26, 26, 26, 0.35) 100%);
}

.hero-accent {
  position: absolute;
  top: 0;
  right: 0;
  width: 45%;
  height: 100%;
  background: linear-gradient(135deg, transparent 40%, rgba(45, 143, 60, 0.15) 100%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  z-index: 1;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
  padding-block: 4rem;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green-light);
  margin-bottom: 1rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 1.25rem;
}

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

.hero-lead {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.82);
  max-width: 540px;
  margin-bottom: 2rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.5rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--green);
  color: var(--white);
  border-color: var(--green);
}

.btn-primary:hover {
  background: var(--green-light);
  border-color: var(--green-light);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
  border-color: var(--green-light);
  color: var(--green-light);
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.hero-stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--green-light);
}

.hero-stat span {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.65);
}

.hero-visual { position: relative; }

.hero-card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.hero-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.hero-mini-card {
  background: rgba(45, 143, 60, 0.12);
  border: 1px solid rgba(45, 143, 60, 0.25);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: center;
}

.hero-mini-card svg {
  width: 32px;
  height: 32px;
  color: var(--green-light);
  margin: 0 auto 0.75rem;
}

.hero-mini-card h3 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--white);
}

/* Sections */
section { padding-block: 5rem; }

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--charcoal);
  margin-bottom: 1rem;
}

.section-lead { color: var(--gray-500); }

.bg-light { background: var(--off-white); }
.bg-dark { background: var(--gradient-dark); color: rgba(255, 255, 255, 0.85); }
.bg-dark .section-title { color: var(--white); }
.bg-dark .section-eyebrow { color: var(--green-light); }

/* Services grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--white);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: all var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(45, 143, 60, 0.25);
}

.service-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(45, 143, 60, 0.1);
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
}

.service-icon svg { width: 26px; height: 26px; color: var(--green); }

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.75rem;
}

.service-card p { font-size: 0.92rem; color: var(--gray-500); }

/* About split */
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  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 h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--charcoal);
  margin-bottom: 1.25rem;
}

.about-content p { margin-bottom: 1rem; }

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.check-list li::before {
  content: "";
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 0.15rem;
  background: var(--green);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpath d='M5 12l5 5L19 7'/%3E%3C/svg%3E");
  background-size: 12px;
  background-repeat: no-repeat;
  background-position: center;
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.project-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.project-card-body { padding: 1.5rem; }

.project-card-body h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.5rem;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.project-tag {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.6rem;
  background: rgba(45, 143, 60, 0.1);
  color: var(--green-dark);
  border-radius: 4px;
}

.project-card-body p { font-size: 0.88rem; color: var(--gray-500); }

/* Stats bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  padding: 3rem;
  background: var(--charcoal);
  border-radius: var(--radius-lg);
}

.stat-item { text-align: center; }

.stat-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--green-light);
}

.stat-item span {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.65);
}

/* Team */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.team-card {
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 0, 0, 0.06);
}

.team-avatar {
  width: 72px;
  height: 72px;
  margin: 0 auto 1rem;
  background: var(--gradient-brand);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
}

.team-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.25rem;
}

.team-card p {
  font-size: 0.85rem;
  color: var(--green);
  font-weight: 500;
}

/* Accreditations */
.accred-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.accred-badge {
  padding: 0.85rem 1.5rem;
  background: rgba(45, 143, 60, 0.08);
  border: 1px solid rgba(45, 143, 60, 0.2);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--charcoal);
}

/* Page hero */
.page-hero {
  padding-top: calc(var(--header-height) + 4rem);
  padding-bottom: 4rem;
  background: var(--gradient-dark);
  text-align: center;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 1rem;
}

.page-hero p {
  color: rgba(255, 255, 255, 0.75);
  max-width: 600px;
  margin: 0 auto;
}

/* Service detail */
.service-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.service-detail-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 2rem;
  border-left: 4px solid var(--green);
  box-shadow: var(--shadow-sm);
}

.service-detail-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 1rem;
}

.service-detail-card ul li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
  font-size: 0.92rem;
  color: var(--gray-700);
}

.service-detail-card ul li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: bold;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info-card {
  padding: 2rem;
  background: var(--off-white);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}

.contact-info-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.75rem;
}

.contact-info-card p,
.contact-info-card a {
  font-size: 0.92rem;
  color: var(--gray-700);
  line-height: 1.8;
}

.contact-info-card a:hover { color: var(--green); }

.contact-form {
  background: var(--white);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.form-group { margin-bottom: 1.25rem; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--green);
}

.form-group textarea { min-height: 140px; resize: vertical; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* CTA */
.cta-section {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--gradient-brand);
  border-radius: var(--radius-lg);
  color: var(--white);
}

.cta-section h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.cta-section p {
  opacity: 0.9;
  max-width: 520px;
  margin: 0 auto 2rem;
}

.cta-section .btn-outline {
  border-color: var(--white);
  color: var(--white);
}

.cta-section .btn-outline:hover {
  background: var(--white);
  color: var(--green-dark);
}

/* Footer */
.footer {
  background: var(--charcoal);
  color: rgba(255, 255, 255, 0.75);
  padding-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
}

.footer-brand img {
  width: 48px;
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.footer h4 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--green-light);
  margin-bottom: 1.25rem;
}

.footer-links li { margin-bottom: 0.6rem; }

.footer-links a {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.7);
}

.footer-links a:hover { color: var(--green-light); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
  color: var(--green-light);
}

.footer-bottom a:hover {
  color: var(--white);
}

/* Projects table */
.projects-table-wrap { overflow-x: auto; }

.projects-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.projects-table th,
.projects-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.projects-table th {
  background: var(--charcoal);
  color: var(--white);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.projects-table tr:hover td { background: rgba(45, 143, 60, 0.04); }

.status-current {
  color: var(--green);
  font-weight: 600;
}

.status-completed { color: var(--gray-500); }

/* Responsive */
@media (max-width: 960px) {
  .hero-inner,
  .about-split,
  .contact-grid { grid-template-columns: 1fr; }

  .hero-visual { display: none; }

  .stats-bar { grid-template-columns: repeat(2, 1fr); }

  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--charcoal);
    padding: 1.5rem;
    gap: 1rem;
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition);
    border-bottom: 1px solid rgba(45, 143, 60, 0.2);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
  }

  .form-row { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; }
}