body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #edf2f7;
    color: #2d3748;
}


header {
    background:#2c7a7b ;
    color: white;
    text-align: center;
    padding: 1rem 0;
    box-shadow: 0px 3px 15px rgba(0,0,0,0.1);

}

.add-contact, .search, .contact-list {
    max-width: 450px;
    padding: 2rem;
    background-color: white;
    margin: 2rem auto;
    border-radius: 8px;
    box-shadow: 0px 10px 25px rgba(0,0,0,0.05);
}


input, button {
    padding: 0.7rem 1rem;
    margin: 0.7rem 0;
    width: 100%;
    box-sizing: border-box;
    border: none;
    border-radius: 8px;
    transition: transform 0.1s, box-shadow 0.1s;
}

input {
    background-color: #f7fafc;
    color: #2d3748;
    outline: none;
    border: 1px solid #e2e8f0;

}

input:focus {
    border-color: #a0aec0;
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.5);
}


button {
    background-color: #2c7a7b;
    color: white;
    font-weight: 600;
    cursor: pointer;
    outline: none;
}


button:hover {
    background-color: #285e5a;
    transform: translateY(-2px);
    box-shadow: 0 7px 14px rbg(50, 50, 93, .1);
}

button:active {
    transform: translateY(0);
    box-shadow: 0 4px 8px rbg(50, 50, 93, .1);
}