/* ── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary:    #1a6b3c;
  --primary-dk: #134f2d;
  --accent:     #f5a623;
  --dark:       #1a1a2e;
  --text:       #444;
  --text-light: #777;
  --bg-light:   #f7f9f7;
  --white:      #ffffff;
  --radius:     10px;
  --shadow:     0 4px 24px rgba(0,0,0,0.08);
  --transition: 0.3s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

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

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}
.btn-primary  { background: var(--primary); color: var(--white); }
.btn-primary:hover  { background: var(--primary-dk); transform: translateY(-2px); }
.btn-outline  { background: transparent; color: var(--white); border-color: var(--white); }
.btn-outline:hover  { background: var(--white); color: var(--primary); }
.btn-secondary { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-secondary:hover { background: var(--primary); color: var(--white); }
.full-width { width: 100%; text-align: center; }

/* ── Section helpers ──────────────────────────────────────────────────────── */
.section-tag {
  display: inline-block;
  background: #e8f5ee;
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
}
.section-tag.center, .section-title.center, .section-sub.center { text-align: center; display: block; }
.section-title { font-size: 2rem; color: var(--dark); font-weight: 700; margin-bottom: 12px; line-height: 1.3; }
.section-sub   { color: var(--text-light); max-width: 560px; margin: 0 auto 48px; }

/* ── Header / Nav ─────────────────────────────────────────────────────────── */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--white);
  border-bottom: 1px solid #eee;
  transition: box-shadow var(--transition);
}
#header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.1); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav-logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.5px;
}
.nav-logo span { color: var(--primary); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  transition: all var(--transition);
}
.nav-link:hover { color: var(--primary); background: #f0f7f3; }
.nav-cta {
  background: var(--primary);
  color: var(--white) !important;
  padding: 9px 20px;
}
.nav-cta:hover { background: var(--primary-dk) !important; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ─────────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0f3d23 0%, #1a6b3c 50%, #2d9e5f 100%);
  padding: 120px 0 80px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}
.hero-tag {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  color: #a8e6c1;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 20px;
}
.hero-content h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  color: var(--white);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}
.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.85);
  max-width: 560px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ── Stats ────────────────────────────────────────────────────────────────── */
.stats { background: var(--dark); padding: 40px 0; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item h2 { font-size: 2.4rem; color: var(--accent); font-weight: 800; }
.stat-item p  { color: rgba(255,255,255,0.7); font-size: 0.9rem; margin-top: 4px; }

/* ── About ────────────────────────────────────────────────────────────────── */
.about { padding: 100px 0; background: var(--white); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text h2 { font-size: 2rem; color: var(--dark); margin-bottom: 16px; line-height: 1.3; }
.about-text p  { color: var(--text-light); margin-bottom: 16px; }
.about-text .btn { margin-top: 8px; }
.about-cards { display: flex; flex-direction: column; gap: 16px; }
.about-card {
  background: var(--bg-light);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: box-shadow var(--transition);
}
.about-card:hover { box-shadow: var(--shadow); }
.about-card-icon { font-size: 1.8rem; flex-shrink: 0; }
.about-card h3 { font-size: 1rem; color: var(--dark); margin-bottom: 4px; }
.about-card p  { font-size: 0.9rem; color: var(--text-light); }

/* ── Services ─────────────────────────────────────────────────────────────── */
.services { padding: 100px 0; background: var(--bg-light); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 16px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.service-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,0,0,0.12); }
.service-card.featured {
  border: 2px solid var(--primary);
  transform: translateY(-8px);
}
.service-card.featured:hover { transform: translateY(-14px); }
.service-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  white-space: nowrap;
}
.service-icon { font-size: 2.4rem; margin-bottom: 16px; }
.service-card h3 { font-size: 1.2rem; color: var(--dark); margin-bottom: 12px; }
.service-card > p { color: var(--text-light); font-size: 0.95rem; margin-bottom: 20px; }
.service-list { margin-bottom: 24px; flex: 1; }
.service-list li {
  font-size: 0.9rem;
  color: var(--text);
  padding: 6px 0;
  border-bottom: 1px solid #f0f0f0;
  padding-left: 20px;
  position: relative;
}
.service-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* ── Why Us ───────────────────────────────────────────────────────────────── */
.why-us { padding: 100px 0; background: var(--white); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 16px;
}
.why-item {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius);
  background: var(--bg-light);
  transition: box-shadow var(--transition);
}
.why-item:hover { box-shadow: var(--shadow); }
.why-icon { font-size: 2.2rem; margin-bottom: 14px; }
.why-item h3 { font-size: 1rem; color: var(--dark); margin-bottom: 8px; }
.why-item p  { font-size: 0.9rem; color: var(--text-light); }

/* ── Contact ──────────────────────────────────────────────────────────────── */
.contact { padding: 100px 0; background: var(--bg-light); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: start;
}
.contact-text h2 { font-size: 2rem; color: var(--dark); margin-bottom: 16px; }
.contact-text > p { color: var(--text-light); margin-bottom: 32px; }
.contact-details { display: flex; flex-direction: column; gap: 14px; }
.contact-item { display: flex; align-items: center; gap: 12px; font-size: 0.95rem; }
.contact-icon { font-size: 1.2rem; }
.contact-item a { color: var(--primary); }
.contact-item a:hover { text-decoration: underline; }

.contact-form {
  background: var(--white);
  padding: 36px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid #e0e0e0;
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--primary); }
.form-group textarea { resize: vertical; }

/* ── Footer ───────────────────────────────────────────────────────────────── */
.footer { background: var(--dark); color: rgba(255,255,255,0.75); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding: 60px 0 40px;
}
.footer-logo { font-size: 1.3rem; font-weight: 800; color: var(--white); margin-bottom: 10px; }
.footer-logo span { color: var(--accent); }
.footer-brand p { font-size: 0.9rem; line-height: 1.6; }
.footer-links h4,
.footer-services h4 { color: var(--white); font-size: 0.9rem; margin-bottom: 14px; text-transform: uppercase; letter-spacing: 1px; }
.footer-links ul li,
.footer-services ul li { font-size: 0.9rem; margin-bottom: 8px; }
.footer-links ul li a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  padding: 20px;
  font-size: 0.85rem;
}

/* ── Error Page ───────────────────────────────────────────────────────────── */
.error-page {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 20px 60px;
}
.error-content { text-align: center; }
.error-code { font-size: 6rem; font-weight: 800; color: var(--primary); line-height: 1; margin-bottom: 16px; }
.error-content h1 { font-size: 1.8rem; color: var(--dark); margin-bottom: 12px; }
.error-content p  { color: var(--text-light); margin-bottom: 28px; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: 1fr 1fr; }
  .service-card.featured { transform: none; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  /* Nav */
  .nav-toggle { display: flex; }
  .nav-menu {
    display: none;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 16px 20px 24px;
    border-bottom: 1px solid #eee;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    gap: 4px;
  }
  .nav-menu.open { display: flex; }
  .nav-link { width: 100%; padding: 12px 16px; }
  .nav-cta { text-align: center; margin-top: 8px; }

  /* Sections */
  .about-grid    { grid-template-columns: 1fr; gap: 40px; }
  .services-grid { grid-template-columns: 1fr; }
  .contact-grid  { grid-template-columns: 1fr; gap: 40px; }
  .stats-grid    { grid-template-columns: 1fr; gap: 24px; }
  .why-grid      { grid-template-columns: 1fr 1fr; }
  .footer-grid   { grid-template-columns: 1fr; gap: 28px; }

  .section-title { font-size: 1.6rem; }
  .about-text h2 { font-size: 1.6rem; }
  .contact-text h2 { font-size: 1.6rem; }
  .hero-content h1 { font-size: 2rem; }
  .contact-form { padding: 24px 20px; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; text-align: center; }
  .why-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(3,1fr); }
  .stat-item h2 { font-size: 1.6rem; }
}