/* Global Styles */
:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --info-color: #17a2b8;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1.6;
    color: #333;
}

/* Header Styles */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-color) !important;
}

/* Calculator Card Styles */
.calculator-card {
    border: 1px solid #dee2e6;
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,.075);
    transition: transform 0.2s;
}

.calculator-card:hover {
    transform: translateY(-2px);
}

/* Form Styles */
.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,.25);
}

/* Button Styles */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

/* Footer Styles */
footer {
    border-top: 1px solid #dee2e6;
}

footer a {
    color: var(--secondary-color);
    text-decoration: none;
}

footer a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .calculator-card {
        margin-bottom: 1rem;
    }
    
    footer .col-md-4 {
        margin-bottom: 1.5rem;
    }
}

/* Calculator Result Styles */
.result-box {
    background-color: var(--light-color);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.result-box h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Table Styles */
.table-calculator {
    width: 100%;
    margin-bottom: 1rem;
    background-color: transparent;
}

.table-calculator th,
.table-calculator td {
    padding: 0.75rem;
    vertical-align: top;
    border-top: 1px solid #dee2e6;
}

.table-calculator thead th {
    vertical-align: bottom;
    border-bottom: 2px solid #dee2e6;
    background-color: var(--light-color);
}