:root {
  /* Color system (Green Dark Theme - High Contrast) */
  --bg: #0f1814;
  --card: #1a2f26;
  --muted: #e8f5f0;
  --text: #ffffff;
  --brand: #34d399;
  --brand-2: #10b981;
  --accent: #d1fae5;
  --danger: #ff6b6b;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: linear-gradient(135deg, #1a2f26 0%, #0f1814 50%, #0a0f0c 100%);
  font-weight: 400;
}

.container { width: min(1100px, 92%); margin: 0 auto; }
/* Layout primitives */
.grid { display: grid; gap: 1.5rem; }
.two-col { grid-template-columns: 1.1fr 0.9fr; }
.three-col { grid-template-columns: repeat(3, 1fr); }
.four-col { grid-template-columns: repeat(4, 1fr); }

.site-header { position: sticky; top: 0; z-index: 10; background: rgba(17,26,22,0.9); backdrop-filter: blur(10px); border-bottom: 1px solid #1c3a30; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 0.75rem 0; }
.logo { color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: 0.4px; }
.site-nav .menu { display: flex; align-items: center; list-style: none; gap: 1rem; margin: 0; padding: 0; }
.site-nav a { color: var(--muted); text-decoration: none; padding: 0.5rem 0.75rem; border-radius: 8px; }
.site-nav a:hover, .site-nav a.active { color: var(--text); background: #163226; }
.nav-toggle { display: none; background: transparent; color: var(--text); border: 1px solid #294d41; border-radius: 8px; padding: 0.4rem 0.6rem; }

.btn { background: linear-gradient(90deg, var(--brand), var(--brand-2)); color: #042315; border: none; border-radius: 10px; padding: 0.7rem 1rem; text-decoration: none; display: inline-block; font-weight: 700; box-shadow: 0 6px 18px rgba(0,0,0,0.25); }
.btn:hover { filter: brightness(1.05); }
.btn-outline { background: transparent; border: 1px solid var(--brand); color: var(--text); }
.btn-small { padding: 0.5rem 0.75rem; font-weight: 600; }

.hero { padding: 4rem 0 2rem; }
.hero h1 { font-size: clamp(2rem, 3.2vw, 2.8rem); margin: 0 0 0.6rem; }
.hero p { color: var(--muted); max-width: 52ch; }
.hero .actions { margin-top: 1rem; display: flex; gap: 0.75rem; }
.hero-visual .illustration { width: 100%; height: 300px; border-radius: 16px; background: #102019; border: 1px solid #224237; overflow: hidden; box-shadow: 0 12px 32px rgba(0,0,0,0.35); }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; display: block; filter: saturate(1.08) contrast(1.08); animation: subtle-float 6s ease-in-out infinite; }

.section { padding: 3rem 0; }
.section.alt { background: #0d1814; border-top: 1px solid #17332a; border-bottom: 1px solid #17332a; }
.section-title { margin: 0 0 1rem; }

.cards { }
.card { background: var(--card); border: 1px solid #2d4a3a; padding: 1rem; border-radius: 12px; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; box-shadow: 0 6px 18px rgba(0,0,0,0.3); }
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(0,0,0,0.4); border-color: #34d399; }
.card .card-media { width: 100%; height: 140px; border-radius: 10px; overflow: hidden; margin-bottom: 0.75rem; border: 1px solid #1c352b; }
.card .card-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card h3 { margin-top: 0; }
.card-link { color: var(--accent); text-decoration: none; font-weight: 600; }

.impact { text-align: center; }
.impact-number { font-size: 2rem; font-weight: 700; margin: 0; background: linear-gradient(90deg, var(--accent), #e9fbf2); -webkit-background-clip: text; background-clip: text; color: transparent; }
.impact-label { color: var(--muted); margin: 0; }

.steps { counter-reset: step; }
.step { background: var(--card); border: 1px solid #1e3f32; border-radius: 12px; padding: 1rem; box-shadow: 0 6px 18px rgba(0,0,0,0.22); }
.step h3 { margin: 0.5rem 0; }
.step-num { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 50%; background: #1a332a; border: 1px solid #244e40; font-weight: 700; }

.page-hero { padding: 3rem 0 1rem; border-bottom: 1px solid #17332a; background: #0f1814; }
.lead { color: var(--muted); }

.checklist { padding-left: 1em; }
.checklist li { margin-bottom: 0.4rem; }

.service-block { background: var(--card); border: 1px solid #183229; border-radius: 12px; padding: 1rem; margin-bottom: 1rem; }
.service-block .media { width: 100%; height: 180px; border-radius: 10px; overflow: hidden; border: 1px solid #1c352b; margin-bottom: 0.6rem; }
.service-block .media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.service-block .media.icon { display: flex; align-items: center; justify-content: center; background: radial-gradient(80% 80% at 50% 20%, #17362b, #0e1512); }
.service-block .media.icon svg { filter: drop-shadow(0 4px 10px rgba(0,0,0,0.35)); }
.cta { text-align: center; }

.contact-form .field { margin-bottom: 0.9rem; }
.contact-form label { display: block; margin-bottom: 0.25rem; }
.contact-form input, .contact-form select, .contact-form textarea { width: 100%; padding: 0.6rem 0.7rem; border-radius: 10px; border: 1px solid #2a4a3e; background: #0e1613; color: var(--text); }
.contact-form .error { color: var(--danger); min-height: 1.2em; display: inline-block; }

.site-footer { border-top: 1px solid #1c3a30; margin-top: 2rem; padding: 1.25rem 0; background: #0f1c16; }
.footer-inner { display: grid; grid-template-columns: 1fr auto 1fr; grid-template-rows: auto auto; align-items: center; gap: 1rem; }
.footer-menu { list-style: none; display: flex; gap: 0.75rem; margin: 0; padding: 0; }
.footer-menu a { color: var(--muted); text-decoration: none; }
.footer-menu a:hover, .footer-menu a.active { color: var(--text); }
.footer-brand { color: var(--muted); }
.footer-copy { grid-column: 1 / -1; text-align: center; color: var(--muted); margin-top: 0.25rem; }

/* Social */
.social-links { display: flex; gap: 0.6rem; align-items: center; }
.social-links a { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: #122019; border: 1px solid #1c352b; transition: transform .2s ease, border-color .2s ease, background-color .2s ease; }
.social-links a:hover { transform: translateY(-2px); border-color: #255243; }
.social-links svg { width: 20px; height: 20px; fill: #a3f7b5; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(8px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: .1s; }
.reveal[data-delay="2"] { transition-delay: .2s; }
.reveal[data-delay="3"] { transition-delay: .3s; }
.reveal[data-delay="4"] { transition-delay: .4s; }

@keyframes subtle-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* Responsive */
@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; }
  .three-col { grid-template-columns: repeat(2, 1fr); }
  .four-col { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-copy { text-align: center; grid-column: 1; }
  .social-links { justify-content: center; }
}

@media (max-width: 640px) {
  .site-nav .menu { position: absolute; right: 4%; top: 56px; background: #0f1814; border: 1px solid #183229; border-radius: 12px; padding: 0.5rem; display: none; flex-direction: column; width: min(92vw, 320px); }
  .site-nav .menu.open { display: flex; }
  .nav-toggle { display: inline-block; }
}

/* Details/summary polish */
details { background: var(--card); border: 1px solid #183229; border-radius: 10px; padding: 0.6rem 0.8rem; margin-bottom: 0.6rem; }
details > summary { cursor: pointer; font-weight: 600; }
details[open] { border-color: #255243; }

/* Image utility */
.img-cover { width: 100%; height: 100%; object-fit: cover; display: block; border-radius: 12px; }

/* Light theme defaults already applied above */
/* Footer tweaks for light theme */
.footer-menu a { color: #334155; }