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<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Calculator - Text2Video AI</title>
<script src="https://cdn.tailwindcss.com"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
<style>
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');
body {
font-family: 'Poppins', sans-serif;
background-color: #f8fafc;
}
.gradient-bg {
background: linear-gradient(135deg, #6e8efb, #a777e3);
}
.calculator-btn {
transition: all 0.2s ease;
font-weight: 500;
}
.calculator-btn:active {
transform: scale(0.95);
}
.display-screen {
background: linear-gradient(135deg, #1e293b, #0f172a);
box-shadow: inset 0 2px 4px rgba(0,0,0,0.3);
}
.btn-number {
background: white;
color: #334155;
}
.btn-number:hover {
background: #f1f5f9;
transform: translateY(-2px);
box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}
.btn-operator {
background: #6e8efb;
color: white;
}
.btn-operator:hover {
background: #5a7de8;
transform: translateY(-2px);
box-shadow: 0 4px 6px -1px rgba(110, 142, 251, 0.3);
}
.btn-action {
background: #a777e3;
color: white;
}
.btn-action:hover {
background: #9566d0;
transform: translateY(-2px);
box-shadow: 0 4px 6px -1px rgba(167, 119, 227, 0.3);
}
.btn-equals {
background: linear-gradient(135deg, #6e8efb, #a777e3);
color: white;
}
.btn-equals:hover {
opacity: 0.9;
transform: translateY(-2px);
box-shadow: 0 4px 6px -1px rgba(110, 142, 251, 0.4);
}
.history-item {
animation: slideIn 0.3s ease;
}
@keyframes slideIn {
from {
opacity: 0;
transform: translateX(-10px);
}
to {
opacity: 1;
transform: translateX(0);
}
}
.calculator-card {
box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}
</style>
</head>
<body class="min-h-screen">
<div class="gradient-bg text-white">
<div class="container mx-auto px-4 py-8">
<header class="flex justify-between items-center">
<a href="index.html" class="flex items-center space-x-2 hover:opacity-80 transition">
<i class="fas fa-video text-2xl"></i>
<h1 class="text-2xl font-bold">Text2Video AI</h1>
</a>
<nav class="hidden md:flex space-x-6">
<a href="index.html" class="hover:underline">Home</a>
<a href="#" class="hover:underline">Templates</a>
<a href="#" class="hover:underline">Pricing</a>
<a href="calculator.html" class="hover:underline font-semibold border-b-2 border-white">Calculator</a>
</nav>
<button class="md:hidden text-xl">
<i class="fas fa-bars"></i>
</button>
</header>
</div>
</div>
<main class="container mx-auto px-4 py-12">
<div class="max-w-4xl mx-auto">
<h2 class="text-3xl font-bold text-center mb-8 text-gray-800">Scientific Calculator</h2>
<div class="grid grid-cols-1 lg:grid-cols-3 gap-8">
<!-- Calculator -->
<div class="lg:col-span-2">
<div class="calculator-card bg-white rounded-2xl overflow-hidden">
<!-- Display -->
<div class="display-screen p-6 text-right">
<div id="previous-operation" class="text-gray-400 text-sm h-6 mb-1 font-mono"></div>
<div id="display" class="text-white text-4xl md:text-5xl font-bold font-mono overflow-hidden">0</div>
</div>
<!-- Buttons -->
<div class="p-4 grid grid-cols-4 gap-3 bg-gray-50">
<!-- Row 1 -->
<button class="calculator-btn btn-action p-4 rounded-xl text-lg" onclick="clearAll()">AC</button>
<button class="calculator-btn btn-action p-4 rounded-xl text-lg" onclick="clearEntry()">CE</button>
<button class="calculator-btn btn-operator p-4 rounded-xl text-lg" onclick="appendOperator('%')">%</button>
<button class="calculator-btn btn-operator p-4 rounded-xl text-lg" onclick="appendOperator('/')">÷</button>
<!-- Row 2 -->
<button class="calculator-btn btn-number p-4 rounded-xl text-xl" onclick="appendNumber('7')">7</button>
<button class="calculator-btn btn-number p-4 rounded-xl text-xl" onclick="appendNumber('8')">8</button>
<button class="calculator-btn btn-number p-4 rounded-xl text-xl" onclick="appendNumber('9')">9</button>
<button class="calculator-btn btn-operator p-4 rounded-xl text-lg" onclick="appendOperator('*')">×</button>
<!-- Row 3 -->
<button class="calculator-btn btn-number p-4 rounded-xl text-xl" onclick="appendNumber('4')">4</button>
<button class="calculator-btn btn-number p-4 rounded-xl text-xl" onclick="appendNumber('5')">5</button>
<button class="calculator-btn btn-number p-4 rounded-xl text-xl" onclick="appendNumber('6')">6</button>
<button class="calculator-btn btn-operator p-4 rounded-xl text-lg" onclick="appendOperator('-')">−</button>
<!-- Row 4 -->
<button class="calculator-btn btn-number p-4 rounded-xl text-xl" onclick="appendNumber('1')">1</button>
<button class="calculator-btn btn-number p-4 rounded-xl text-xl" onclick="appendNumber('2')">2</button>
<button class="calculator-btn btn-number p-4 rounded-xl text-xl" onclick="appendNumber('3')">3</button>
<button class="calculator-btn btn-operator p-4 rounded-xl text-lg" onclick="appendOperator('+')">+</button>
<!-- Row 5 -->
<button class="calculator-btn btn-number p-4 rounded-xl text-xl" onclick="appendNumber('0')">0</button>
<button class="calculator-btn btn-number p-4 rounded-xl text-xl" onclick="appendDecimal()">.</button>
<button class="calculator-btn btn-action p-4 rounded-xl text-lg" onclick="toggleSign()">±</button>
<button class="calculator-btn btn-equals p-4 rounded-xl text-xl font-bold" onclick="calculate()">=</button>
</div>
</div>
<!-- Keyboard shortcuts info -->
<div class="mt-6 bg-purple-50 p-4 rounded-xl border border-purple-100">
<h3 class="text-purple-800 font-semibold mb-2"><i class="fas fa-keyboard mr-2"></i>Keyboard Shortcuts</h3>
<p class="text-sm text-purple-700">Use number keys, operators (+, -, *, /), Enter (=), Escape (AC), Backspace (CE)</p>
</div>
</div>
<!-- History -->
<div class="lg:col-span-1">
<div class="bg-white rounded-2xl shadow-lg p-6 h-full">
<div class="flex justify-between items-center mb-4">
<h3 class="text-lg font-semibold text-gray-800">History</h3>
<button onclick="clearHistory()" class="text-sm text-red-500 hover:text-red-700">
<i class="fas fa-trash-alt"></i> Clear
</button>
</div>
<div id="history-list" class="space-y-2 max-h-96 overflow-y-auto">
<p class="text-gray-400 text-center py-8">No calculations yet</p>
</div>
</div>
</div>
</div>
</div>
</main>
<footer class="bg-gray-900 text-white py-8 mt-12">
<div class="container mx-auto px-4 text-center">
<p class="text-gray-400">© 2023 Text2Video AI. All rights reserved.</p>
</div>
</footer>
<script>
let display = document.getElementById('display');
let previousOperation = document.getElementById('previous-operation');
let currentValue = '0';
let previousValue = '';
let operator = '';
let shouldResetDisplay = false;
let history = [];
function updateDisplay() {
display.textContent = currentValue;
if (previousValue && operator) {
previousOperation.textContent = previousValue + ' ' + operator;
} else {
previousOperation.textContent = '';
}
}
function appendNumber(num) {
if (currentValue === '0' || shouldResetDisplay) {
currentValue = num;
shouldResetDisplay = false;
} else {
if (currentValue.length < 12) {
currentValue += num;
}
}
updateDisplay();
}
function appendDecimal() {
if (shouldResetDisplay) {
currentValue = '0.';
shouldResetDisplay = false;
} else if (!currentValue.includes('.')) {
currentValue += '.';
}
updateDisplay();
}
function appendOperator(op) {
if (operator && !shouldResetDisplay) {
calculate();
}
previousValue = currentValue;
operator = op;
shouldResetDisplay = true;
updateDisplay();
}
function calculate() {
if (!operator || !previousValue) return;
let prev = parseFloat(previousValue);
let current = parseFloat(currentValue);
let result;
switch(operator) {
case '+':
result = prev + current;
break;
case '-':
result = prev - current;
break;
case '*':
result = prev * current;
break;
case '/':
if (current === 0) {
alert('Cannot divide by zero!');
return;
}
result = prev / current;
break;
case '%':
result = prev % current;
break;
default:
return;
}
// Format result
let resultString = result.toString();
if (resultString.length > 12) {
resultString = result.toExponential(6);
}
// Add to history
addToHistory(previousValue + ' ' + operator + ' ' + currentValue + ' = ' + resultString);
currentValue = resultString;
operator = '';
previousValue = '';
shouldResetDisplay = true;
updateDisplay();
}
function clearAll() {
currentValue = '0';
previousValue = '';
operator = '';
shouldResetDisplay = false;
updateDisplay();
}
function clearEntry() {
currentValue = '0';
updateDisplay();
}
function toggleSign() {
if (currentValue !== '0') {
if (currentValue.startsWith('-')) {
currentValue = currentValue.substring(1);
} else {
currentValue = '-' + currentValue;
}
updateDisplay();
}
}
function addToHistory(calculation) {
history.unshift(calculation);
if (history.length > 10) history.pop();
updateHistoryDisplay();
}
function updateHistoryDisplay() {
const historyList = document.getElementById('history-list');
if (history.length === 0) {
historyList.innerHTML = '<p class="text-gray-400 text-center py-8">No calculations yet</p>';
return;
}
historyList.innerHTML = history.map((item, index) => `
<div class="history-item bg-gray-50 p-3 rounded-lg text-sm text-gray-700 font-mono cursor-pointer hover:bg-purple-50 transition" onclick="loadFromHistory('${item}')">
${item}
</div>
`).join('');
}
function loadFromHistory(item) {
// Extract result from "a + b = result"
const parts = item.split(' = ');
if (parts.length === 2) {
currentValue = parts[1];
updateDisplay();
}
}
function clearHistory() {
history = [];
updateHistoryDisplay();
}
// Keyboard support
document.addEventListener('keydown', function(e) {
if (e.key >= '0' && e.key <= '9') {
appendNumber(e.key);
} else if (e.key === '.') {
appendDecimal();
} else if (e.key === '+' || e.key === '-' || e.key === '*' || e.key === '/') {
appendOperator(e.key);
} else if (e.key === 'Enter' || e.key === '=') {
e.preventDefault();
calculate();
} else if (e.key === 'Escape') {
clearAll();
} else if (e.key === 'Backspace') {
if (currentValue.length > 1) {
currentValue = currentValue.slice(0, -1);
} else {
currentValue = '0';
}
updateDisplay();
} else if (e.key === '%') {
appendOperator('%');
}
});
</script>
</body>
</html> |