/* CSS Variables for Easy Theme Management */
:root {
    --primary-color: #2C3E50;
    --secondary-color: #18BC9C;
    --accent-color: #ECF0F1;
    --button-hover-color: #16A085;
    --input-border-color: #BDC3C7;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --font-family: 'Lato', sans-serif;
}

/* Reset some default styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    align-items: center;
    min-height: 100vh;
    color: var(--primary-color);
}
h2, h3 {
            color: var(--primary-color);
            margin-top: 0.5em;
            margin-bottom: 0.3em;
        }

        h2 {
            font-size: 2.5em;
            padding-bottom: 0.2em;
        }

        h3 {
            font-size: 1.8em;
        }

        p {
            margin-bottom: 1.2em;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            margin: 2em 0;
            background-color: white;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
        }

        th, td {
            padding: 12px;
            text-align: left;
            border: 1px solid #ddd;
        }

        th {
            background-color: var(--secondary-color);
            color: white;
        }

        tr:nth-child(even) {
            background-color: #f2f2f2;
        }

        @media (max-width: 768px) {
            body {
                padding: 15px;
            }

            h2 {
                font-size: 2em;
            }

            h3 {
                font-size: 1.5em;
            }

            table {
                display: block;
                overflow-x: auto;
            }
        }

        .container {
            background-color: white;
            padding: 2em;
        }
        .calculator-section {
            background-color: var(--accent-color);
            padding: 2rem 0;
            min-height: 75vh;
        }

        .calculator-container {
            background-color: #fff;
            padding: 40px 50px;
            border-radius: 15px;
            box-shadow: 0 10px 25px var(--shadow-color);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            max-width: 450px;
            width: 100%;
            margin: auto;
        }

        .calculator-container:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px var(--shadow-color);
        }
h1 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 2em;
    color: var(--primary-color);
    font-weight: 700;
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
    color: var(--primary-color);
}

select, input[type="number"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--input-border-color);
    border-radius: 8px;
    background-color: var(--accent-color);
    font-size: 1em;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    color: var(--primary-color);
}

select:focus, input[type="number"]:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 8px rgba(24, 188, 156, 0.5);
}

button {
    width: 100%;
    padding: 14px;
    background-color: var(--secondary-color);
    border: none;
    color: #fff;
    font-size: 1.1em;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    font-weight: 700;
}

button:hover {
    background-color: var(--button-hover-color);
    transform: translateY(-2px);
}

.result {
    margin-top: 30px;
    padding: 20px;
    background-color: var(--accent-color);
    border-left: 5px solid var(--secondary-color);
    border-radius: 8px;
    display: none;
    font-size: 1.1em;
    color: var(--primary-color);
    animation: fadeIn 0.5s ease-in-out;
}

.result i {
    color: var(--secondary-color);
    margin-right: 10px;
}

.spinner {
    animation: spin 1s linear infinite;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 600px) {
    .calculator-container {
        padding: 30px 20px;
    }
    h1 {
        font-size: 1.8em;
    }
    button {
        font-size: 1em;
        padding: 12px;
    }
    .result {
        font-size: 1em;
        padding: 15px;
    }
}
.row-result{
    display:block !important;
    clear:both;
    min-width:100%;
}
   .content-section {
            max-width: 960px;
            margin: 0 auto;
            padding: 2rem 1rem;
            background-color:white;
        }
        
           @media (max-width: 768px) {
            .calculator-section {
                min-height: auto !important;
                padding: 1rem;
            }
            
            .calculator-container {
                padding: 30px 20px;
            }

            .content-section {
                padding: 1rem;
            }
        }