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

body {
    background: #f5f5f5;
    color: #333;
}

/* HEADER */
header {
    display: flex;
    justify-content: space-between;
    padding: 20px;
    background: #111;
    color: #fff;
    position: sticky;
    top: 0;
    z-index: 10;
}

header nav a {
    margin-left: 20px;
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}

/* HERO */
.hero {
    background: url(teck.png) center/cover no-repeat;
    height: 70vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    padding: 20px;
}

.hero h1 {
    font-size: 3rem;
    text-shadow: 2px 2px 5px #000;
}

.btn {
    background: #007bff;
    padding: 12px 25px;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 20px;
    display: inline-block;
}

/* SERVICES */
.services {
    padding: 50px;
    background: white;
}

.services h2 {
    text-align: center;
    margin-bottom: 30px;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.service-card {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
}

/* ABOUT */
.about {
    padding: 40px;
    background: #e9ecef;
    text-align: center;
}

/* CONTACT */
.contact {
    padding: 40px;
    text-align: center;
}

.contact-buttons .btn {
    margin: 10px;
}

.whatsapp {
    background: #25D366;
}

.email {
    background: #444;
}

/* FLOATING WHATSAPP BUTTON */
.floating-whatsapp {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #25D366;
    color: white;
    padding: 15px;
    border-radius: 50%;
    font-size: 24px;
    text-decoration: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}