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

body {
    background: #f5f7fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

h1 {
    color: #2c3e50;
    font-size: 2.5rem;
    font-weight: 200;
    margin-bottom: 3rem;
    letter-spacing: -1px;
}

.Calculator {
    background: #ffffff;
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.08),
        0 8px 32px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.8);
    min-width: 400px;
}

input {
    width: 100%;
    padding: 1.25rem 1.5rem;
    margin: 0.75rem 0;
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 16px;
    color: #334155;
    font-size: 1.1rem;
    font-weight: 400;
    transition: all 0.2s ease;
}

input:focus {
    outline: none;
    border-color: #3b82f6;
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

input::placeholder {
    color: #94a3b8;
    font-weight: 300;
}

button {
    background: #3b82f6;
    border: none;
    padding: 1rem 2rem;
    margin: 0.5rem 0.25rem;
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
    min-width: 80px;
}

button:hover {
    background: #2563eb;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.3);
}

button:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
}

#result {
    color: #1e293b;
    font-size: 1.5rem;
    font-weight: 300;
    margin-top: 2rem;
    text-align: center;
    padding: 1rem;
    background: #f1f5f9;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}