* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background: #f4f8f5;
    color: #333;
    line-height: 1.6;
}

/* NAVBAR */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 8%;
    background: white;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-size: 24px;
    font-weight: 600;
    color: #1b8f4b;
}

nav a {
    margin-left: 25px;
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: 0.3s;
}

nav a:hover {
    color: #1b8f4b;
}

/* HERO SECTION */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 100px 10%;
    background: linear-gradient(135deg, #0c3f21, #39c172);
    color: white;
}

.hero-text {
    max-width: 520px;
}

.hero-text h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 600;
}

.hero-text p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero-img img {
    width: 550px;
    max-width: 100%;
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.25);
}

/* BUTTON */
.download-btn {
    display: inline-block;
    background: #1b8f4b;
    color: white;
    padding: 14px 32px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: 0.3s;
}

.download-btn:hover {
    background: #0e6d38;
}

/* FEATURES */
.features {
    padding: 90px 10%;
    text-align: center;
}

.features h2 {
    font-size: 32px;
    margin-bottom: 50px;
    color: #1b8f4b;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    transition: 0.3s;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.feature-card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 15px;
}

.feature-card h3 {
    color: #1b8f4b;
    margin-bottom: 10px;
}

/* ABOUT */
.about {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 90px 10%;
    background: white;
    gap: 50px;
}

.about-text {
    max-width: 600px;
}

.about-text h2 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #1b8f4b;
}

.about-text p {
    margin-bottom: 15px;
    font-size: 17px;
}

.about-img img {
    width: 420px;
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

/* DOWNLOAD SECTION */
.download {
    padding: 100px 10%;
    text-align: center;
    background: linear-gradient(135deg, #92bba2, #dff9ec);
}

.download h2 {
    font-size: 34px;
    margin-bottom: 15px;
    color: #1b8f4b;
}

.download p {
    margin-bottom: 30px;
    font-size: 18px;
}

/* FOOTER */
footer {
    background: #0f2f1c;
    color: white;
    text-align: center;
    padding: 25px;
    margin-top: 40px;
    font-size: 14px;
}

/* RESPONSIVE DESIGN */
@media (max-width: 900px) {
    .hero {
        flex-direction: column;
        text-align: center;
    }

    .hero-img img {
        width: 300px;
        margin-top: 40px;
    }

    .about {
        flex-direction: column;
        text-align: center;
    }

    .about-img img {
        width: 300px;
    }
}