/**
 * ============================================================================
 * MODULE: RESPONSIVE
 * VERSION: 1.0.0
 * LAST UPDATED: 2025-12-15
 * ============================================================================
 *
 * PURPOSE:
 * Responsive design breakpoints and mobile-first adaptations
 *
 * CHANGELOG:
 * v1.0.0 (2025-12-15) - Initial version
 *   - Mobile layout adjustments
 *   - Tablet breakpoints
 *   - Desktop optimizations
 * ============================================================================
 */

/* Tablet and Below (max-width: 1024px) */
@media (max-width: 1024px) {
    .app-container {
        grid-template-columns: 240px 1fr;
    }

    .app-header h1 {
        font-size: var(--font-size-2xl);
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .main-content {
        padding: var(--spacing-lg);
    }
}

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 1fr;
        grid-template-areas:
            "header"
            "sidebar"
            "main";
    }

    .sidebar {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-md);
        max-height: none;
        overflow-y: visible;
    }

    .nav-section {
        margin-bottom: var(--spacing-md);
    }

    .nav-section h3 {
        font-size: var(--font-size-xs);
        margin-bottom: var(--spacing-sm);
    }

    .nav-button {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
        margin-bottom: 2px;
    }

    .btn-calculate {
        padding: var(--spacing-sm);
        font-size: var(--font-size-base);
    }

    .app-header {
        padding: var(--spacing-md);
    }

    .app-header h1 {
        font-size: var(--font-size-xl);
    }

    .version-info {
        flex-wrap: wrap;
    }

    .main-content {
        padding: var(--spacing-md);
    }

    .form-grid {
        gap: var(--spacing-md);
    }

    .chart-wrapper {
        padding: var(--spacing-md);
    }

    .scenario-controls {
        flex-direction: column;
    }

    .btn-secondary {
        width: 100%;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    table {
        font-size: var(--font-size-sm);
    }

    th, td {
        padding: var(--spacing-sm);
    }
}

/* Small Mobile (max-width: 480px) */
@media (max-width: 480px) {
    .app-header h1 {
        font-size: var(--font-size-lg);
    }

    .version-badge,
    .edition-badge {
        font-size: 0.65rem;
        padding: 2px var(--spacing-xs);
    }

    .main-content {
        padding: var(--spacing-sm);
    }

    .content-section h2 {
        font-size: var(--font-size-xl);
    }

    .content-section h3 {
        font-size: var(--font-size-lg);
    }

    .form-group {
        gap: var(--spacing-xs);
    }

    input[type="text"],
    input[type="number"],
    input[type="email"],
    select {
        font-size: var(--font-size-sm);
    }

    label {
        font-size: var(--font-size-xs);
    }

    .chart-wrapper h3 {
        font-size: var(--font-size-base);
    }

    .stat-value {
        font-size: var(--font-size-xl);
    }

    .stat-label {
        font-size: var(--font-size-xs);
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .scenario-controls,
    button {
        display: none !important;
    }

    .app-container {
        grid-template-columns: 1fr;
        grid-template-areas:
            "header"
            "main";
        box-shadow: none;
    }

    .main-content {
        padding: 0;
    }

    .content-section {
        display: block !important;
        page-break-inside: avoid;
    }

    .chart-wrapper {
        page-break-inside: avoid;
    }

    body {
        background-color: white;
    }
}