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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>MilkNet | Calculator</title>
<style>
body {
font-family: 'Arial', sans-serif;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
background-color: #000; /* Dark background */
color: white; /* White text */
}
.calculator {
background-color: #000; /* Dark calculator background */
padding: 20px;
border-radius: 15px;
box-shadow: 0 4px 10px rgba(0, 0, 0, 0.6);
width: 280px;
}
input {
width: 100%;
height: 50px;
font-size: 24px;
padding: 10px;
margin-bottom: 20px;
background-color: #000;
color: white;
border: none;
border-radius: 8px;
text-align: center;
}
.buttons {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 10px;
}
button {
padding: 20px;
font-size: 18px;
border: none;
background-color: #444; /* Dark buttons */
color: white;
border-radius: 8px;
cursor: pointer;
transition: background-color 0.3s, transform 0.1s;
}
button:hover {
background-color: #555;
}
button:active {
background-color: #666;
transform: scale(0.98);
}
button:focus {
outline: none;
}
.button-clear {
background-color: #e63946;
}
.button-equal {
background-color: #2a9d8f;
grid-column: span 4;
}
.button-function {
background-color: #f1faee;
color: #333;
}
</style>
</head>
<body>
<div class="calculator">
<input type="text" id="display" disabled>
<div class="buttons">
<button class="button-clear" onclick="clearDisplay()">C</button>
<button onclick="deleteLast()">←</button>
<button class="button-function" onclick="appendToDisplay('%')">%</button>
<button class="button-function" onclick="appendToDisplay('/')">/</button>
<button onclick="appendToDisplay('7')">7</button>
<button onclick="appendToDisplay('8')">8</button>
<button onclick="appendToDisplay('9')">9</button>
<button class="button-function" onclick="appendToDisplay('*')">*</button>
<button onclick="appendToDisplay('4')">4</button>
<button onclick="appendToDisplay('5')">5</button>
<button onclick="appendToDisplay('6')">6</button>
<button class="button-function" onclick="appendToDisplay('-')">-</button>
<button onclick="appendToDisplay('1')">1</button>
<button onclick="appendToDisplay('2')">2</button>
<button onclick="appendToDisplay('3')">3</button>
<button class="button-function" onclick="appendToDisplay('+')">+</button>
<button onclick="appendToDisplay('0')">0</button>
<button onclick="appendToDisplay('.')">.</button>
<button class="button-function" onclick="appendToDisplay('**')">^</button>
<button class="button-function" onclick="appendToDisplay('sin(')">sin</button>
<button class="button-function" onclick="appendToDisplay('cos(')">cos</button>
<button class="button-function" onclick="appendToDisplay('tan(')">tan</button>
<button class="button-function" onclick="appendToDisplay('(')">(</button>
<button class="button-function" onclick="appendToDisplay(')')">)</button>
<button class="button-equal" onclick="calculate()">=</button>
</div>
</div>
<script>
function clearDisplay() {
document.getElementById('display').value = '';
}
function deleteLast() {
let display = document.getElementById('display');
display.value = display.value.slice(0, -1);
}
function appendToDisplay(value) {
let display = document.getElementById('display');
display.value += value;
}
function calculate() {
let display = document.getElementById('display');
try {
display.value = eval(display.value.replace(/sin\(/g, 'Math.sin(').replace(/cos\(/g, 'Math.cos(').replace(/tan\(/g, 'Math.tan('));
} catch (e) {
display.value = 'Error';
}
}
document.addEventListener('keydown', function (e) {
const validKeys = [
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'.', '/', '*', '-', '+', '=', 'Enter', 'Backspace', 'c',
'(', ')', '%', '^'
];
if (validKeys.includes(e.key)) {
if (e.key === 'Enter' || e.key === '=') {
calculate();
} else if (e.key === 'Backspace') {
deleteLast();
} else if (e.key === 'c' || e.key === 'c') {
clearDisplay();
} else {
appendToDisplay(e.key);
}
}
});
</script>
</body>
</html>