:root {
    --primary-color: #9acd32; /* Lemon Green */
    --secondary-color: #6c757d; /* Grey */
    --dark-grey: #343a40;
    --light-grey: #f8f9fa;
    --white: #ffffff;
    --font-family: 'Poppins', sans-serif;
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    background-color: var(--white);
    color: var(--dark-grey);
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 0 2rem;
}

/* Header */
header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    color: var(--dark-grey);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 600;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.btn {
    padding: 0.7rem 1.5rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--primary-color);
}

.btn-secondary {
    background-color: transparent;
    color: var(--secondary-color);
    border: 2px solid var(--secondary-color);
}

.btn-secondary:hover {
    background-color: var(--secondary-color);
    color: var(--white);
}

.menu-icon {
    display: none;
    cursor: pointer;
}

.menu-icon div {
    width: 25px;
    height: 3px;
    background-color: var(--dark-grey);
    margin: 5px;
    transition: all 0.3s ease;
}


/* Hero Section */
#hero {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.animated-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--dark-grey), #28313b);
    z-index: -1;
    animation: gradient 15s ease infinite;
}

@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.hero-content {
    animation: fadeIn 2s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

#hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

#hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    font-weight: 300;
}

/* Services Section */
#services {
    padding: 4rem 0;
    text-align: center;
}

#services h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-grey);
}

.service-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.card-icon {
    margin-bottom: 1.5rem;
}

.card-icon img {
    filter: grayscale(100%) brightness(150%); /* Grey icon */
    transition: filter 0.3s ease;
}

.card:hover .card-icon img {
    filter: none; /* Lemon green on hover by keeping original color */
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-grey);
}

.card p {
    color: var(--secondary-color);
}

/* About Section */
#about {
    padding: 4rem 0;
    background-color: var(--light-grey);
    text-align: center;
}

#about h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

#about p {
    max-width: 800px;
    margin: 0 auto;
    color: var(--secondary-color);
}

/* Footer */
footer {
    background-color: var(--dark-grey);
    color: var(--light-grey);
    padding: 2rem 0;
    text-align: center;
}

.footer-email-link {
    display: block;
    margin-top: 1rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        right: 0;
        height: 92vh;
        top: 70px;
        background: var(--white);
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 50%;
        transform: translateX(100%);
        transition: transform 0.5s ease-in;
    }

    .nav-links li {
        opacity: 0;
        margin: 1.5rem 0;
    }

    .menu-icon {
        display: block;
    }
    
    .nav-active {
        transform: translateX(0%);
    }

    @keyframes navLinkFade {
        from {
            opacity: 0;
            transform: translateX(50px);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }

    .toggle .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    .toggle .line2 {
        opacity: 0;
    }
    .toggle .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    #hero h1 {
        font-size: 2.5rem;
    }

    #hero p {
        font-size: 1rem;
    }

    .btn-secondary {
        display: none; /* Hides header button on mobile */
    }
}