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

body {
  font-family: 'Poppins', sans-serif;
  background: #f0fdf4;
  color: #065f46;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

/* Header */
header {
  background: #bbf7d0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: #064e3b;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

nav a {
  color: #064e3b;
  text-decoration: none;
  font-weight: 600;
}

/* Hero */
.hero {
  min-height: 100vh;
  padding: 6rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: #e7fce9;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  color: #065f46;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  color: #065f46;
}

.btn {
  margin-top: 1.5rem;
  padding: 0.9rem 1.7rem;
  background: #047857;
  color: white;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-block;
}

.btn:hover {
  background: #065f46;
  transform: scale(1.05);
}

/* Leaf Falling */
.leaf-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.leaf {
  position: absolute;
  width: 32px;
  height: 32px;
  background: url('images/leaf.png') no-repeat center/contain;
  opacity: 0.6;
  animation: fall linear infinite;
}

@keyframes fall {
  0% {
    transform: translateY(-50px) rotate(0);
  }
  100% {
    transform: translateY(100vh) rotate(360deg);
  }
}

/* Section */
section {
  padding: 4rem 2rem;
  text-align: center;
  position: relative;
  z-index: 1;
}

section:nth-child(even) {
  background: #ecfdf5;
}

h2 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

/* Cards */
.cards {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: center;
  margin-top: 2rem;
}

.card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  padding: 2rem;
  max-width: 250px;
  flex: 1;
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-10px);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

/* Footer */
footer {
  background: #bbf7d0;
  text-align: center;
  padding: 2rem;
  font-size: 0.9rem;
  color: #064e3b;
}