/* Mobile responsive styles */
@media (max-width: 480px) {
    .container {
        padding: 1rem;
        /* Мобилна оптимизация за клавиатура */
        padding-bottom: max(1rem, env(keyboard-inset-height, 0px));
    }
    
    .amount-input {
        font-size: 1.8rem;
        padding: 1.2rem;
        min-height: 52px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }
    
    .quick-buttons {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .company-name {
        font-size: 1.4rem;
    }
    
    .logo {
        font-size: 2rem;
    }
    
    .phone-number {
        font-size: 1rem;
    }
    
    .calculation-display {
        padding: 1.5rem;
    }
    
    .calculation-row {
        font-size: 1rem;
        margin: 0.75rem 0;
        padding: 0.5rem 0;
    }
    
    .calculation-row.total {
        font-size: 1.2rem;
        padding-top: 1rem;
        margin-top: 1rem;
    }
    
    .nav-btn {
        padding: 1rem 1.25rem;
        font-size: 1.1rem;
        min-height: 48px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }
    
    /* Специфична оптимизация за input полетата при отворена клавиатура */
    .input-section {
        justify-content: flex-start;
        padding-top: 1rem;
        gap: 1.5rem;
    }
    
    .screen-title {
        font-size: 1.2rem;
        margin-bottom: 1rem;
    }
    
    /* Осигуряване на видимост на input при фокус */
    .amount-input:focus {
        transform: scale(1.0);
        margin-bottom: 1rem;
    }

    /* Mobile styles for new components */
    .bottom-nav {
        padding: 0.75rem 0;
    }

    .nav-item {
        padding: 0.75rem 0.5rem;
        font-size: 0.8rem;
        min-height: 44px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }

    .nav-icon {
        font-size: 1.3rem;
        margin-bottom: 0.25rem;
    }

    .tab-content {
        padding: 1rem;
    }

    .summary-cards {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .summary-card {
        padding: 1.25rem;
    }

    .summary-card .value {
        font-size: 1.4rem;
    }

    .filter-buttons {
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    .filter-btn {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
        min-width: 44px;
        min-height: 44px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }

    .list-item {
        padding: 1rem;
        margin-bottom: 0.75rem;
    }

    .list-item-time {
        font-size: 0.9rem;
    }

    .list-item-details {
        font-size: 1rem;
    }

    .action-btn {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
        min-height: 44px;
        min-width: 44px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }

    .fab {
        width: 56px;
        height: 56px;
        bottom: 90px;
        right: 1rem;
        font-size: 1.3rem;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }

    .modal-content {
        width: 95%;
        padding: 1.5rem;
        margin: 0.75rem;
    }

    .modal-title {
        font-size: 1.2rem;
    }

    .modal-form input,
    .modal-form select,
    .modal-form textarea {
        padding: 0.75rem;
        font-size: 1rem;
        min-height: 44px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }

    .modal-btn {
        padding: 0.75rem;
        font-size: 1rem;
        min-height: 44px;
        min-width: 44px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }

    .input-group textarea {
        min-height: 80px;
        padding: 10px;
    }

    .statistics-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .stat-card {
        padding: 16px;
    }

    .stat-card .value {
        font-size: 1.5rem;
    }

    .export-section {
        margin-top: 20px;
    }

    .export-btn {
        width: 100%;
        padding: 12px;
        font-size: 0.9rem;
    }

    .quick-expense-buttons {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .quick-expense-btn {
        padding: 10px;
        font-size: 0.8rem;
    }

    .category-breakdown {
        margin-top: 20px;
    }

    .category-item {
        padding: 10px;
        font-size: 0.9rem;
    }

    .empty-state {
        padding: 30px 20px;
    }

    .empty-state h3 {
        font-size: 1.1rem;
    }

    .empty-state p {
        font-size: 0.9rem;
    }
}

@media (max-width: 360px) {
    .calculation-display {
        padding: 15px;
    }
    
    .calculation-row {
        font-size: 0.85rem;
        margin: 8px 0;
    }
    
    .calculation-row.total {
        font-size: 1rem;
    }
    
    .nav-btn {
        padding: 12px 15px;
        font-size: 0.95rem;
    }
}

@media (min-width: 768px) {
    .container {
        max-width: 700px;
        padding: 30px;
    }
    
    .header {
        margin-bottom: 40px;
    }
    
    .company-name {
        font-size: 2.2rem;
    }
    
    .phone-number {
        font-size: 1.4rem;
    }
    
    .screen-title {
        font-size: 1.4rem;
        margin-bottom: 25px;
    }
    
    .amount-input {
        font-size: 1.3rem;
        padding: 20px;
        max-width: 350px;
        margin: 0 auto;
    }
    
    .quick-buttons {
        max-width: 450px;
        margin: 0 auto;
        gap: 15px;
    }
    
    .quick-btn {
        padding: 15px 20px;
        font-size: 1.1rem;
        min-width: 70px;
    }
    
    .calculation-display {
        padding: 35px;
        max-width: 550px;
        margin: 0 auto;
    }
    
    .calculation-row {
        font-size: 1.2rem;
        margin: 16px 0;
    }
    
    .calculation-row.total {
        font-size: 1.4rem;
    }
    
    .nav-btn {
        padding: 18px 30px;
        font-size: 1.2rem;
        max-width: 220px;
    }
    
    .navigation {
        justify-content: center;
        gap: 25px;
        margin-top: 30px;
    }
}