/* Enhanced Mobile-first Responsive Design */

.nav-tabs .nav-link {
    white-space: nowrap;
    min-width: fit-content;
}

.nav-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.nav-tabs::-webkit-scrollbar {
    display: none;
}

@media (max-width: 1200px) {
    .calculator-container {
        gap: 2rem;
        padding: 2rem;
    }
    
    .results-highlight {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    }
}

@media (max-width: 992px) {
    .calculator-container {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        padding: 2.5rem;
    }
    
    .adsense-sidebar {
        order: -1;
        margin-bottom: 2.5rem;
        min-height: 200px;
        position: static;
    }
    
    header h1 {
        font-size: 2.5rem;
    }
    
    header {
        padding: 2.5rem 1rem 2rem;
    }
}

@media (max-width: 768px) {
    .results-highlight {
        grid-template-columns: 1fr 1fr !important;
        gap: 1.25rem;
    }
    
    .input-section h2 {
        font-size: 1.75rem;
    }
    
    .btn-primary {
        width: 100%;
        padding: 1.25rem;
        font-size: 1rem;
    }
    
    .highlight-box {
        padding: 2rem 1.5rem;
    }
    
    .highlight-box p {
        font-size: 1.25rem;
    }
    
    .nav-tabs .nav-link {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
    }
    
    .adsense-placeholder {
        padding: 2rem;
        margin: 2rem 0;
    }
    
    .calculator-container {
        padding: 2rem;
    }
    
    header h1 {
        font-size: 2.25rem;
    }
}

@media (max-width: 576px) {
    .results-highlight {
        grid-template-columns: 1fr !important;
    }
    
    .calculator-container {
        padding: 2rem;
        margin: 1.5rem 0;
        border-radius: var(--border-radius-sm);
    }
    
    .highlight-box {
        padding: 2rem 1.5rem;
    }
    
    .highlight-box h3 {
        font-size: 0.85rem;
    }
    
    .highlight-box p {
        font-size: 1.1rem;
    }
    
    .educational-content {
        padding: 2rem;
        margin-top: 2.5rem;
    }
    
    .form-control, .form-select {
        padding: 1rem 1.25rem;
    }
    
    .input-group-text {
        padding: 1rem 1.25rem;
    }
    
    .input-section h2 {
        font-size: 1.75rem;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    header {
        padding: 2rem 1rem 1.5rem;
    }
}

@media (max-width: 480px) {
    header {
        padding: 1.75rem 1rem;
    }
    
    header h1 {
        font-size: 1.75rem;
    }
    
    .nav-tabs .nav-link {
        padding: 0.625rem 1rem;
        font-size: 0.85rem;
    }
    
    .calculator-container {
        padding: 1.5rem;
    }
    
    .adsense-placeholder {
        padding: 1.5rem;
        font-size: 0.95rem;
    }
    
    .highlight-box {
        padding: 1.5rem 1.25rem;
    }
    
    .input-section h2 {
        font-size: 1.5rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
    
    .highlight-box:hover {
        transform: none !important;
    }
    
    .btn-primary:hover {
        transform: none !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    }
    
    .form-control {
        border-width: 3px;
    }
    
    .btn-primary {
        border: 2px solid #000000;
    }
}

/* Print styles */
@media print {
    header {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
    
    .nav-tabs {
        display: none;
    }
    
    .calculator-container {
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .adsense-placeholder {
        display: none;
    }
    
    .btn {
        display: none;
    }
}