body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    overflow-x: hidden;
}

.navbar {
    background-color: #007bff;
    color: #fff;
    padding: 15px 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 24px;
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo {
    width: 40px;
    height: 40px;
    margin-right: 10px;
    transition: transform 0.3s;
}

.logo:hover {
    transform: rotate(360deg);
}

.navbar-nav {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.nav-item {
    margin-left: 15px;
}

.nav-link {
    color: #fff;
    text-decoration: none;
    font-size: 18px;
}

.header {
    background-color: #007bff;
    color: #fff;
    padding: 60px 0;
    text-align: center;
    overflow: hidden;
}

.header h1 {
    margin: 0;
    font-size: 36px;
    animation: fadeIn 1.5s ease-in-out;
}

.header p {
    font-size: 18px;
    margin-top: 10px;
    animation: fadeIn 1.5s ease-in-out 0.5s;
    animation-fill-mode: both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.main {
    padding: 20px 0;
    text-align: center;
}

.container {
    max-width: 800px;
    margin: 20px auto;
    background-color: #fff;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    transform: scale(0.95);
    animation: popIn 0.5s ease-in-out forwards;
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.form-group {
    margin-bottom: 15px;
    text-align: left;
}

.form-control {
    width: 100%;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: border-color 0.3s;
}

.form-control:focus {
    border-color: #007bff;
    outline: none;
}

.btn {
    background-color: #007bff;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s, transform 0.3s;
}

.btn:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

.footer {
    background-color: #333;
    color: #fff;
    padding: 20px;
    text-align: center;
    margin-top: 20px;
}

.footer a {
    color: #fff;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

.result {
    margin-top: 20px;
    padding: 10px;
    background-color: #e9ecef;
    border-radius: 4px;
    font-size: 16px;
    animation: fadeIn 1s ease-in-out;
}