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

body{
    background:#f5f5f5;
    color:#222;
}

header{
    background:#000;
    position:sticky;
    top:0;
    z-index:1000;
}

nav{
    max-width:1200px;
    margin:auto;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:18px 30px;
}

.logo{
    color:#fff;
    font-size:1.2rem;
    font-weight:bold;
}

.gst{
    color:#e31b23;
    font-size:2rem;
    margin-right:10px;
}

nav ul{
    list-style:none;
    display:flex;
    gap:25px;
}

nav a{
    color:white;
    text-decoration:none;
    transition:.3s;
}

nav a:hover{
    color:#e31b23;
}

.hero{
    min-height:90vh;
    display:flex;
    align-items:center;
    justify-content:center;
    text-align:center;
    background:
    linear-gradient(
        rgba(0,0,0,.75),
        rgba(0,0,0,.75)
    ),
    url('images/car.png');

    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
}

.hero-content{
    max-width:800px;
    padding:20px;
}

.hero h1{
    font-size:3rem;
    margin-bottom:20px;
}

.hero p{
    font-size:1.2rem;
    margin-bottom:30px;
    line-height:1.6;
}

.hero-buttons{
    display:flex;
    justify-content:center;
    gap:15px;
    flex-wrap:wrap;
}

.btn{
    padding:14px 28px;
    border-radius:5px;
    text-decoration:none;
    font-weight:bold;
}

.primary{
    background:#e31b23;
    color:white;
}

.secondary{
    background:white;
    color:black;
}

.services{
    padding:80px 20px;
    text-align:center;
}

.services h2{
    margin-bottom:40px;
    color:#e31b23;
}

.service-grid{
    max-width:1100px;
    margin:auto;
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:25px;
}

.card{
    background:white;
    padding:30px;
    border-radius:12px;
    box-shadow:0 4px 12px rgba(0,0,0,.1);
}

.card i{
    font-size:40px;
    color:#e31b23;
    margin-bottom:15px;
}

.calculator {
    padding: 80px 20px;
    text-align: center;
    background: #f5f5f5;
}

.calculator h2 {
    color: #e31b23;
    margin-bottom: 30px;
}

.about{
    background:#000;
    color:white;
    padding:80px 20px;
}

.about-content{
    max-width:900px;
    margin:auto;
}

.about h2{
    color:#e31b23;
    margin-bottom:20px;
}

.about p{
    margin-bottom:20px;
    line-height:1.8;
}

.about ul{
    list-style:none;
}

.about li{
    margin-bottom:10px;
}

.calc-box {
    max-width: 400px;
    margin: auto;
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,.1);
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.calc-box input {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

.calc-box label {
    display: flex;
    align-items: center;
    gap: 10px;
    text-align: left;
    font-size: 0.95rem;
}

.calc-box input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

.calc-box button {
    padding: 12px;
    border: none;
    background: #e31b23;
    color: white;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
}

.calc-box button:hover {
    opacity: 0.9;
}

.reviews{
    padding:80px 20px;
    text-align:center;
    background:#000;
}

.reviews h2{
    color:#e31b23;
    margin-bottom:40px;
}

.review-grid{
    max-width:1000px;
    margin:auto;
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
    gap:20px;
}

.review-card{
    background:white;
    padding:25px;
    border-radius:12px;
    box-shadow:0 4px 12px rgba(0,0,0,.1);
}

.contact{
    padding:80px 20px;
    background:#f5f5f5;
    text-align:center;
}

.contact h2{
    color:#e31b23;
    margin-bottom:40px;
}

.contact-container{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:20px;
    max-width:1000px;
    margin:auto;
}

.contact-card{
    background:white;
    padding:30px;
    border-radius:12px;
    box-shadow:0 4px 12px rgba(0,0,0,.1);
}

.contact-card i{
    font-size:35px;
    color:#e31b23;
    margin-bottom:15px;
}

footer{
    background:#000;
    color:white;
    text-align:center;
    padding:20px;
}

@media(max-width:768px){

    nav{
        flex-direction:column;
        gap:15px;
    }

    nav ul{
        flex-wrap:wrap;
        justify-content:center;
    }

    .hero h1{
        font-size:2.2rem;
    }

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