:root {
    --green: #5ED100;
    --dark: #111111;
    --light: #f5f5f5;
    --text: #444;
}

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

html{
    scroll-behavior:smooth;
}

body{
    font-family:'Montserrat',sans-serif;
    color:var(--text);
    line-height:1.6;
}

.container{
    width:min(1200px,90%);
    margin:auto;
}

header{
    position:fixed;
    top:0;
    width:100%;
    background:white;
    z-index:1000;
    box-shadow:0 2px 15px rgba(0,0,0,.08);
}

.nav-container{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:90px;
}

.logo img{
    height:60px;
}

nav ul{
    display:flex;
    list-style:none;
    gap:30px;
}

nav a{
    text-decoration:none;
    color:#111;
    font-weight:600;
}

.btn{
    background:var(--green);
    color:white;
    text-decoration:none;
    border:none;
    padding:15px 30px;
    border-radius:8px;
    font-weight:700;
    cursor:pointer;
    transition:.3s;
}

.btn:hover{
    transform:translateY(-2px);
}

.btn-outline{
    background:transparent;
    border:2px solid white;
}

.hero{
    min-height:100vh;
    display:flex;
    align-items:center;
    background:
    linear-gradient(
        rgba(0,0,0,.75),
                    rgba(0,0,0,.75)
    ),
    url('https://images.unsplash.com/photo-1509391366360-2e959784a276?q=80&w=1600');
    background-size:cover;
    background-position:center;
}

.hero-content{
    color:white;
}

.hero h1{
    font-size:4rem;
    max-width:900px;
}

.hero h1 span{
    color:var(--green);
}

.hero p{
    margin-top:25px;
    max-width:700px;
}

.hero-buttons{
    margin-top:40px;
    display:flex;
    gap:15px;
}

.subtitle{
    color:var(--green);
    font-weight:700;
}

section{
    padding:120px 0;
}

.section-header{
    text-align:center;
    margin-bottom:60px;
}

.section-header span{
    color:var(--green);
    font-weight:700;
}

.section-header h2{
    font-size:2.5rem;
    color:#111;
}

.service-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:25px;
}

.service-card{
    padding:35px;
    background:white;
    border-radius:15px;
    box-shadow:0 10px 30px rgba(0,0,0,.08);
}

.icon{
    font-size:3rem;
    margin-bottom:15px;
}

.about{
    background:#f8f8f8;
}

.about-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:60px;
    align-items:center;
}

.placeholder-box{
    background:linear-gradient(135deg,#111,#333);
    height:500px;
    border-radius:20px;
}

.stats{
    display:flex;
    gap:30px;
    margin-top:40px;
}

.stat h3{
    color:var(--green);
    font-size:2rem;
}

.advantages{
    background:#111;
    color:white;
}

.light h2{
    color:white;
}

.advantages-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:25px;
}

.advantage{
    background:#1b1b1b;
    padding:30px;
    border-radius:15px;
}

.reference-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
}

.reference-item{
    height:250px;
    border-radius:15px;
    background:#ddd;
}

.contact{
    background:#111;
}

.contact-wrapper{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:50px;
    color:white;
}

.contact-form{
    display:flex;
    flex-direction:column;
    gap:15px;
}

.contact-form input,
.contact-form textarea{
    padding:15px;
    border:none;
    border-radius:8px;
}

.contact-form textarea{
    min-height:180px;
    resize:vertical;
}

footer{
    background:black;
    color:white;
    padding:25px 0;
}

.footer-content{
    display:flex;
    justify-content:space-between;
}

.mobile-menu-btn{
    display:none;
    font-size:30px;
    cursor:pointer;
}

@media(max-width:900px){

    nav{
        display:none;
    }

    .mobile-menu-btn{
        display:block;
    }

    .hero h1{
        font-size:2.8rem;
    }

    .about-grid,
    .contact-wrapper{
        grid-template-columns:1fr;
    }

    .reference-grid{
        grid-template-columns:1fr;
    }

    .hero-buttons{
        flex-direction:column;
    }

    .footer-content{
        flex-direction:column;
        gap:10px;
        text-align:center;
    }
}