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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
header {
    background-color: #004080;
    color: white;
    padding: 1rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.logo {
    height: 40px;
    width: auto;
}

h1 {
    font-size: 1.5rem;
    text-align: center;
    margin: 0 1rem;
}

/* Main Content Styles */
main {
    flex: 1;
    padding: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.calculator-container {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 1.5rem;
    margin: 1rem auto;
}

.calculator-container h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    text-align: center;
    font-size: 1.3rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #eee;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #34495e;
}

input[type="number"],
select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

input[type="number"]:focus,
select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

input[readonly] {
    background-color: #f9f9f9;
    color: #555;
    cursor: not-allowed;
}

button {
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    padding: 0.75rem;
    width: 100%;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 0.5rem;
}

button:hover {
    background-color: #2980b9;
}

/* Results Styles */
.results-container {
    margin-top: 1.0rem;
    padding: 1.0rem;
    background-color: #f8fafc;
    border-radius: 8px;
    display: none;
	text-align: center
}

.results-container h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    text-align: center;
}

.table-responsive {
    overflow-x: auto;
    margin-top: 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    min-width: 600px;
}

th {
    background-color: #3498db;
    color: white;
    padding: 0.75rem;
    text-align: center;
}

td {
    padding: 0.5rem;
    border-bottom: 1px solid #eee;
    text-align: center;
}

tr:hover {
    background-color: #f1f7fd;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    overflow-y: auto;
}

.modal-content {
    background-color: #fff;
    margin: 10% auto;
    padding: 1.5rem;
    border-radius: 8px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.modal-header {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 1rem;
}

.caution-icon {
    width: 24px;
    height: 24px;
    margin: 0 0.5rem;
}

.modal-header h3 {
    font-size: 1.25rem;
    color: #2c3e50;
}

.modal-body {
    margin-bottom: 1.5rem;
}

.modal-body p {
    margin-bottom: 1rem;
    line-height: 1.6;
}

/* Updated Modal Footer Styles */
.modal-footer {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.checkbox-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.checkbox-container input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

#continue-btn {
    width: 100%;
    padding: 0.75rem;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

#continue-btn:hover {
    background-color: #2980b9;
}

#continue-btn:disabled {
    background-color: #95a5a6;
    cursor: not-allowed;
}

/* Footer Styles */
footer {
    background-color: #004080;
    color: white;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}

/* Utility Classes */
.amount-info {
    font-size: 0.85rem;
    color: #7f8c8d;
    margin-top: 0.25rem;
    font-style: italic;
}

#amount-display {
    display: inline-block;
    margin-left: 0.5rem;
    font-weight: bold;
    color: #2c3e50;
}

.error-input {
    border: 2px solid #e74c3c !important;
    background-color: #fef0ef;
}

.error-message {
    color: #e74c3c;
    font-size: 0.85rem;
    margin-top: 0.25rem;
    display: block;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        text-align: center;
    }
    
    .logo {
        margin-bottom: 0.5rem;
    }
    
    h1 {
        font-size: 1.25rem;
        margin: 0.5rem 0;
    }
    
    .calculator-container {
        padding: 1rem;
    }
    
    .modal-content {
        margin: 1rem auto;
        padding: 1rem;
    }
    
    table {
        min-width: 100%;
    }
    
    /* Enhanced mobile modal footer */
    .modal-footer {
        gap: 0.75rem;
    }
    
    .checkbox-container {
        flex-direction: row;
        flex-wrap: wrap;
        text-align: center;
    }
    
    #continue-btn {
        padding: 0.65rem;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }
    
    input[type="number"],
    select,
    button {
        padding: 0.65rem;
    }
    
    .modal-content {
        width: 95%;
    }
    
    .caution-icon {
        width: 20px;
        height: 20px;
    }
    
    th, td {
        padding: 0.5rem 0.25rem;
        font-size: 0.8rem;
    }
    
    /* More compact mobile footer */
    .modal-footer {
        margin-top: 1rem;
    }
    
    .checkbox-container label {
        font-size: 0.9rem;
    }
}