style.css

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@100;200;300;400;500;600;700;800;900&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    list-style: none;
}

html {
    font-size: 62.5%;
    scroll-behavior: smooth; /* Add smooth scrolling */
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: #f0f0f0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Header Section */
header {
    width: 100%;
    height: 13vh;
    background-color: #007bff;
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5rem;
}

nav > a {
    display: inline-block;
    font-size: 3.5rem;
    color: white;
    position: relative;
}

nav > a::before,
nav > a::after {
    content: '';
    position: absolute;
    background-color: white;
    height: .3rem;
    transition: all .3s ease;
}

nav > a::before {
    left: 0;
    bottom: 0;
    width: 0;
}

nav > a::after {
    right: 0;
    top: 0;
    width: 0;
}

nav > a:hover::before,
nav > a:hover::after {
    width: 100%;
}

nav ol {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3rem;
}

nav a {
    font-size: 1.6rem;
    position: relative;
    color: white;
    letter-spacing: 1px;
}

nav a:hover {
    color: wheat;
}

/* Main Section */
main {
    width: 100%;
    height: calc(100vh - 13vh);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center; 
    padding: 2rem; /* Add some padding */
}

h1 {
    font-size: 4rem; /* Increased title size */
    color: gray;
    margin-bottom: 3rem; /* Use margin for spacing */
}

.input {
    width: clamp(30rem, 50rem, 80%);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

.input-group {
    position: relative;
    height: 4rem;
    flex: 1 0 30rem;
}

input {
    height: 100%;
    width: 100%;
    padding: 0 3rem 0 1.5rem;
    border: none;
    font-size: 1.6rem;
    letter-spacing: 1px;
    outline: none; /* Removed outline */
    background-color: transparent;
    position: relative; /* Position relative for pseudo-element */
}

input::after {
    content: '';
    position: absolute;
    left: 50%; /* Start from the middle */
    bottom: -2px; /* Position just below the input */
    width: 100%;
    height: 2px; /* Height of the underline */
    background-color: #0056b3; /* Blue color */
    transform: translateX(-50%); /* Center it */
    transition: width 0.4s ease, left 0.4s ease; /* Transition for width and left */
    width: 0; /* Initially hidden */
}

input:focus::after {
    left: 50%; /* Keep centered */
    width: 100%; /* Expand to full width */
    transform: translateX(-50%); /* Keep it centered */
}

input:focus {
    border-bottom-color: transparent; /* Hide the default border when focused */
}

label {
    position: absolute;
    left: 1.5rem;
    top: 50%;
    transition: all .3s ease;
    transform: translateY(-50%);
    font-size: 1.5rem;
}

input:focus + label,
input:valid + label {
    top: -.5rem;
    left: 1rem;
    font-size: 1.3rem;
}

/* Result Styling */
#result {
    margin-top: 1rem; /* Adjusted space above the result */
    font-size: 2rem; /* Larger font size for visibility */
    font-weight: 600; /* Make it bold */
    color: #333; /* Dark color for contrast */
    text-align: center; /* Center the result */
    padding: 1rem; /* Add some padding for better visibility */
    background-color: #e7f1ff; /* Light background for contrast */
    border-radius: 0.5rem; /* Rounded corners */
}

/* Responsive Design for Mobile */
@media (max-width: 768px) {
    nav {
        padding: 0 2rem;
    }
    
    main {
        padding: 2rem;
    }

    h1 {
        font-size: 3.2rem; /* Adjusted for smaller screens */
    }

    input {
        font-size: 1.4rem; 
    }

    #result {
        font-size: 1.8rem; /* Slightly smaller on mobile */

    }
    
}