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

:root {
  --green-dark: #2D5A3D;
  --green-mid: #4A7C59;
  --green-light: #E8F5E9;
  --green-accent: #6AAF7E;
  --text-dark: #1A2E22;
  --text-mid: #4A5568;
  --white: #FFFFFF;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.7;
}

/* NAV */
#navbar {
  position: fixed; top: 0; width: 100%; z-index: 1000;
  background: rgba(28, 43, 34, 0.97);
  backdrop-filter: blur(6px);
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}
.nav-inner {
  max-width: 1100px; margin: 0 auto;
  padding: 0 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo { text-decoration: none; display: flex; align-items: center; }
.logo-img { height: 40px; width: auto; display: block; }
.nav-links {
  list-style: none; display: flex; gap: 2rem;
}
.nav-links a {
  color: rgba(255,255,255,0.88); text-decoration: none;
  font-size: 0.92rem; font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--white); }
.hamburger {
  display: none; background: none; border: none;
  color: var(--white); font-size: 1.5rem; cursor: pointer;
}

/* HERO */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, rgba(45,90,61,0.82) 0%, rgba(74,124,89,0.75) 100%),
    url('https://images.unsplash.com/photo-1441974231531-c6227db76b6e?w=1600&auto=format&fit=crop') center/cover no-repeat;
  display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 6rem 1.5rem 3rem;
}
.hero-content { max-width: 720px; }
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700; color: var(--white);
  line-height: 1.25; margin-bottom: 1.2rem;
}
.hero p {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: rgba(255,255,255,0.85); margin-bottom: 2rem;
}
.btn {
  display: inline-block;
  background: var(--white); color: var(--green-dark);
  padding: 0.8rem 2rem; border-radius: 4px;
  font-weight: 600; font-size: 0.95rem;
  text-decoration: none; border: none; cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}
.btn:hover { background: var(--green-light); transform: translateY(-2px); }

/* SECTIONS */
.section { padding: 5rem 1.5rem; }
.section-alt { background: var(--green-light); }
.container { max-width: 1100px; margin: 0 auto; }
h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700; color: var(--green-dark);
}
.divider {
  width: 56px; height: 4px;
  background: var(--green-accent);
  border-radius: 2px; margin: 0.8rem 0 2rem;
}
.about-text {
  font-size: 1.05rem; color: var(--text-mid);
  max-width: 780px; line-height: 1.85;
}

/* CARDS */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem; margin-top: 1rem;
}
.card {
  background: var(--white); border-radius: 8px;
  padding: 2rem 1.5rem;
  box-shadow: 0 2px 16px rgba(45,90,61,0.08);
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 6px 24px rgba(45,90,61,0.14); }
.card-icon { font-size: 2rem; margin-bottom: 1rem; }
.card h3 { font-size: 1.05rem; color: var(--green-dark); margin-bottom: 0.6rem; }
.card p { font-size: 0.92rem; color: var(--text-mid); }

/* NEWS */
.news-card {
  background: var(--white); border-radius: 8px;
  padding: 2rem; max-width: 780px;
  box-shadow: 0 2px 16px rgba(45,90,61,0.08);
  border-left: 4px solid var(--green-accent);
}
.news-tag {
  display: inline-block;
  background: var(--green-light); color: var(--green-dark);
  font-size: 0.75rem; font-weight: 600;
  padding: 0.2rem 0.7rem; border-radius: 20px;
  margin-bottom: 0.8rem; text-transform: uppercase; letter-spacing: 0.5px;
}
.news-card h3 { font-size: 1.1rem; color: var(--green-dark); margin-bottom: 0.8rem; }
.news-card p { font-size: 0.93rem; color: var(--text-mid); }

/* CONTACT */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem; align-items: start;
}
.contact-info p { margin-bottom: 0.8rem; color: var(--text-mid); }
.contact-info a { color: var(--green-mid); text-decoration: none; }
.contact-info a:hover { text-decoration: underline; }
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.contact-form input,
.contact-form textarea {
  padding: 0.75rem 1rem; border-radius: 4px;
  border: 1.5px solid #C8E6C9;
  font-family: inherit; font-size: 0.95rem;
  background: var(--white); color: var(--text-dark);
  transition: border-color 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none; border-color: var(--green-mid);
}
.contact-form .btn {
  background: var(--green-dark); color: var(--white);
  align-self: flex-start;
}
.contact-form .btn:hover { background: var(--green-mid); }

/* FOOTER */
footer {
  background: var(--green-dark); color: rgba(255,255,255,0.7);
  text-align: center; padding: 1.5rem;
  font-size: 0.85rem;
}

/* BACK TO TOP */
#back-to-top {
  position: fixed; bottom: 2rem; right: 2rem;
  background: var(--green-dark); color: var(--white);
  border: none; border-radius: 50%;
  width: 44px; height: 44px; font-size: 1.2rem;
  cursor: pointer; display: none;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  transition: background 0.2s, transform 0.2s;
  z-index: 999;
}
#back-to-top:hover { background: var(--green-mid); transform: translateY(-2px); }

/* RESPONSIVE */
@media (max-width: 768px) {
  .hamburger { display: block; }
  .nav-links {
    display: none; flex-direction: column;
    position: absolute; top: 64px; left: 0; width: 100%;
    background: var(--green-dark);
    padding: 1rem 1.5rem 1.5rem; gap: 1rem;
  }
  .nav-links.open { display: flex; }
  .contact-wrap { grid-template-columns: 1fr; gap: 2rem; }
}