:root {
    --dark-blue: #1a237e;
    --light-blue: #534bae;
    --white: #ffffff;
    --black: #000000;
    --gray: #f8f9fa;
    --border-gray: #dee2e6;
    --font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen, Ubuntu, Cantarell, sans-serif;
}

/* General styles */
body {
    background-color: var(--gray);
    color: var(--black);
    font-family: var(--font-family);
    font-weight: 400;
    line-height: 1.6;
}

.main-title {
    font-family: var(--font-family);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.subtitle {
    font-family: var(--font-family);
    font-weight: 300;
    letter-spacing: 0.2px;
}

.form-container {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 0.5rem 2rem rgba(0, 0, 0, 0.2);
    transform: translateY(0);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.form-container:hover {
    transform: translateY(-2px);
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.25);
}

.card {
    border: none;
    margin-bottom: 1.5rem;
}

/* Results styling */
#results {
    display: none;
    background-color: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    margin-top: 2rem;
    border: 2px solid var(--dark-blue);
}

#results.show {
    display: block;
}

/* Card styling within results */
#results .card {
    border: 1px solid var(--border-gray);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    transition: box-shadow 0.3s ease;
}

#results .card:hover {
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.1);
}

.shadow-sm {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075) !important;
}

.form-label {
    font-weight: 500;
    color: var(--dark-blue);
    margin-bottom: 0.5rem;
    letter-spacing: 0.1px;
}

/* Form styling */
.form-control {
    border: 1px solid var(--border-gray);
    padding: 0.75rem;
}

.form-control:focus {
    border-color: var(--light-blue);
    box-shadow: 0 0 0 0.2rem rgba(26, 35, 126, 0.25);
}

/* Button styling */
.btn-primary {
    background-color: var(--dark-blue);
    border-color: var(--dark-blue);
    padding: 0.75rem 2rem;
    font-weight: 500;
}

.btn-primary:hover {
    background-color: var(--light-blue);
    border-color: var(--light-blue);
}

/* Alert styling */
.alert-info {
    background-color: rgba(26, 35, 126, 0.1);
    border: none;
    color: var(--dark-blue);
}

.result-card {
    background-color: var(--white);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.result-card h4 {
    color: var(--dark-blue);
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.result-card .display-6 {
    color: var(--dark-blue);
    font-weight: 600;
    margin-bottom: 0;
}

/* Table styling */
.table {
    margin-bottom: 0;
}

#reportDiv .table th {
    background-color: var(--light-blue);
    color: var(--white);
    font-weight: 500;
}

.table th {
    background-color: var(--dark-blue);
    color: var(--white);
    font-weight: 500;
}

.table td {
    vertical-align: middle;
}

/* Currency inputs */
.input-group-text {
    background-color: var(--dark-blue);
    color: var(--white);
    border: 1px solid var(--dark-blue);
    padding: 0.75rem;
}

/* Chart container */
#comparisonChart {
    margin-top: 1rem;
    background-color: var(--white);
    padding: 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    height: 300px !important;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .form-container {
        padding: 1rem;
        margin: 0 1rem;
    }
    
    #results {
        padding: 1rem;
        margin: 1rem;
    }
    
    .result-card {
        margin-bottom: 1rem;
    }
    
    #comparisonChart {
        height: 250px !important;
    }
}