/* General Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Body */
body {
    font-family: 'Poppins', sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s ease;
}

/* Header */
header {
    background-color: #002868;
    padding: 1rem 0;
    color: white;
    text-align: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.logo img {
    height: 80px;
}

.nav-menu {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 20px;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    padding: 10px 15px;
    font-weight: bold;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.nav-menu a.active {
    background-color: #BF0A30;
}

.nav-menu a:hover {
    background-color: #BF0A30;
}

/* Dark Mode Button */
.btn-toggle {
    position: absolute;
    right: 20px;
    top: 20px;
    background-color: #BF0A30;
    color: white;
    padding: 10px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-toggle:hover {
    background-color: #002868;
}

/* Main Section */
main {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

/* Calculator Section */
.calculator-section {
    max-width: 600px;
    margin: 20px auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

/* Form Styles */
fieldset {
    border: 1px solid #ccc;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
}

legend {
    font-weight: bold;
    font-size: 1.2em;
    color: #002868;
}

label {
    display: block;
    margin: 10px 0 5px;
    font-weight: 500;
    color: #333;
}

.input-field {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin-bottom: 15px;
    font-size: 1em;
}

.btn-calculate {
    background-color: #002868;
    color: white;
    font-size: 1.2em;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: block;
    width: 100%;
    margin-top: 20px;
}

.btn-calculate:hover {
    background-color: #BF0A30;
    color: white;
}

/* Footer */
footer {
    padding: 30px;
    background-color: #002868;
    color: white;
    text-align: center;
    border-top: 5px solid #BF0A30;
}

footer a {
    color: #BF0A30;
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: #ffffff;
    text-decoration: underline;
}

/* Dark Mode */
body.dark-mode {
    background-color: #121212;
    color: #f1f1f1;
}

body.dark-mode header {
    background-color: #1a1a1a;
}

body.dark-mode footer {
    background-color: #1a1a1a;
}
/* Dark Mode */
body.dark-mode {
    background-color: #121212;
    color: #f1f1f1;
}

body.dark-mode header {
    background-color: #1a1a1a;
}

body.dark-mode footer {
    background-color: #1a1a1a;
}