/* General Styles */
body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
}

/* Header Styles */
header {
    background-color: #2c3e50;
    color: white;
    padding: 8px;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 36px;
    font-weight: bold;
}

header nav ul {
    list-style-type: none;
    padding: 0;
}

header nav ul li {
    display: inline;
    margin: 0 15px;
}

header nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 18px;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(to right, #007bff, #00c6ff);
    color: white;
        padding: 8px;
    text-align: center;
}

.hero-section h2 {
    font-size: 20px;
    margin-bottom: 20px;
}

.hero-section p {
    font-size: 20px;
}

/* Calculator Section */
.calculator-section {
    text-align: center;
    margin: 50px auto;
    padding: 20px;
    background-color: #ffffff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    width: 90%;
    max-width: 500px;
}

.calculator {
    margin: 20px auto;
    max-width: 300px;
}

#display {
    width: 100%;
    height: 50px;
    font-size: 24px;
    text-align: right;
    margin-bottom: 10px;
}

.buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

button {
    padding: 20px;
    font-size: 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

/* Content Section */
.content-section {
    margin-top: 50px;
    padding: 30px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: left;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.content-section h2 {
    font-size: 32px;
}

.content-section p {
    font-size: 18px;
    line-height: 1.6;
}

/* Footer Styles */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 8px;
}

footer ul {
    list-style-type: none;
    padding: 0;
}

footer ul li {
    display: inline;
    margin-right: 10px;
}

footer ul li a {
    color: white;
    text-decoration: none;
}

footer ul li a:hover {
    text-decoration: underline;
}