/* Базовые стили */
.modern-catalog-filters {
    margin-bottom: 2rem;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

/* Мобильная кнопка */
.filters-mobile-toggle {
    display: none;
    margin-bottom: 1rem;
}

.btn-toggle-filters {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    position: relative;
    width: 100%;
    justify-content: center;
}

.btn-toggle-filters:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.active-count {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    animation: counterAppear 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes counterAppear {
    0% {
        opacity: 0;
        transform: scale(0) rotate(180deg);
    }
    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

/* Контейнер фильтров */
.filters-container {
    position: relative;
}

.filters-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10001;
    backdrop-filter: blur(4px);
}

.filters-panel {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
}

.filters-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #f5576c);
    background-size: 200% 100%;
    animation: gradientShift 3s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Заголовок */
.filters-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.filters-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.filters-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-reset-filters,
.btn-close-filters {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    padding: 0.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.btn-reset-filters:hover,
.btn-close-filters:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.btn-close-filters {
    display: none;
}

/* Контент фильтров */
.filters-content {
    padding: 0;
    max-height: 60vh;
    overflow-y: auto;
}

.custom-scrollbar {
    scrollbar-width: thin;
    scrollbar-color: #667eea #f1f1f1;
}

.custom-scrollbar::-webkit-scrollbar {
    width: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 3px;
}

/* Группы фильтров */
.filter-group {
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.filter-title {
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.05);
}

.filter-title:hover {
    background: rgba(255, 255, 255, 0.1);
}

.filter-title:active {
    transform: scale(0.98);
}

.filter-title h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: #2d3748;
}

.collapse-icon {
    transition: transform 0.3s ease;
    color: #667eea;
}

.filter-group.collapsed .collapse-icon {
    transform: rotate(-90deg);
}

.filter-title:hover .collapse-icon {
    color: #764ba2;
}

.filter-content {
    background: rgba(255, 255, 255, 0.7);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.filter-content.collapsible {
    max-height: 300px;
    overflow: hidden;
}

.filter-group.collapsed .filter-content.collapsible {
    max-height: 0;
    padding: 0;
    opacity: 0;
}

/* Опции фильтров */
.filter-options {
    padding: 1rem 1.5rem;
    max-height: 250px;
    overflow-y: auto;
}

.filter-option {
    display: flex;
    align-items: center;
    padding: 0.75rem 0;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 8px;
    margin: 0.25rem 0;
}

.filter-option:hover {
    background: rgba(102, 126, 234, 0.1);
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    transform: translateX(4px);
}

.filter-option.checked {
    background: rgba(102, 126, 234, 0.15);
    padding-left: 0.5rem;
    padding-right: 0.5rem;
}

.checkbox-wrapper {
    position: relative;
    margin-right: 0.75rem;
}

.checkbox-wrapper input[type="checkbox"] {
    opacity: 0;
    position: absolute;
    width: 20px;
    height: 20px;
    margin: 0;
}

.checkmark {
    display: block;
    width: 20px;
    height: 20px;
    border: 2px solid #cbd5e0;
    border-radius: 4px;
    background: white;
    transition: all 0.3s ease;
    position: relative;
}

.checkbox-wrapper input[type="checkbox"]:checked + .checkmark {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: #667eea;
}

.checkbox-wrapper input[type="checkbox"]:checked + .checkmark::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-wrapper input[type="checkbox"]:focus + .checkmark {
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.3);
    border-color: #667eea;
}

.checkmark:hover {
    border-color: #667eea;
    transform: scale(1.05);
}

.checkmark.animate {
    animation: checkmarkPop 0.3s ease;
}

@keyframes checkmarkPop {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.option-text {
    color: #2d3748;
    font-weight: 500;
    line-height: 1.4;
}

/* Фильтр цены */
.price-range {
    padding: 1rem 1.5rem;
}

.price-input-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.price-input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    color: #2d3748;
    background: white;
    transition: all 0.3s ease;
}

.price-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

.price-separator {
    color: #667eea;
    font-weight: 600;
    font-size: 1.1rem;
}

/* Подвал */
.filters-footer {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-apply-filters {
    width: 100%;
    background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(72, 187, 120, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-apply-filters:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(72, 187, 120, 0.4);
}

.btn-apply-filters:active {
    transform: translateY(1px) scale(0.98);
}

.btn-apply-filters:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(72, 187, 120, 0.3);
}

/* Анимация загрузки кнопки */
.btn-apply-filters.loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-apply-filters.loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top: 2px solid #ffffff;
    border-right: 2px solid #ffffff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.btn-apply-filters.loading svg {
    opacity: 0;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Ripple эффект */
.btn-apply-filters, .btn-toggle-filters {
    position: relative;
    overflow: hidden;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple-animation 0.6s linear;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Адаптивность */
@media (max-width: 768px) {
    .filters-mobile-toggle {
        display: block;
    }

    .filters-container.mobile-hidden .filters-panel {
        display: none;
    }

    .filters-container.mobile-open .filters-backdrop {
        display: block;
    }

    .filters-container.mobile-open .filters-panel {
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 90vw;
        max-width: 400px;
        max-height: 80vh;
        z-index: 10001;
        border-radius: 20px;
        animation: modalSlideIn 0.3s ease;
    }

    .filters-container.mobile-open .btn-close-filters {
        display: flex;
    }

    .filters-content {
        max-height: 50vh;
    }

    .filters-header {
        padding: 1rem 1.25rem;
    }

    .filters-footer {
        padding: 1rem 1.25rem;
    }

    .filter-options {
        padding: 0.75rem 1rem;
    }

    .filter-option {
        padding: 0.6rem 0;
    }
    .btn-reset-filters {
    font-size: 0.85rem; /* Чуть меньше на мобильных */
    padding: 0.4rem 0.6rem;
}
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

@media (max-width: 480px) {
    .filters-container.mobile-open .filters-panel {
        width: 95vw;
        max-height: 85vh;
    }

    .price-input-group {
        flex-direction: column;
        gap: 0.5rem;
    }

    .price-separator {
        transform: rotate(90deg);
    }

    .filters-panel.show {
        animation: panelSlideInMobile 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    @keyframes panelSlideInMobile {
        0% {
            opacity: 0;
            transform: translate(-50%, -50%) scale(0.9) translateY(50px);
        }
        100% {
            opacity: 1;
            transform: translate(-50%, -50%) scale(1) translateY(0);
        }
    }
}

/* Темная тема */
@media (prefers-color-scheme: dark) {
    .filters-panel {
        background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
    }

    .filter-title h4,
    .option-text {
        color: #e2e8f0;
    }

    .filter-content {
        background: rgba(45, 55, 72, 0.7);
    }

    .price-input {
        background: #4a5568;
        color: #e2e8f0;
        border-color: rgba(102, 126, 234, 0.3);
    }

    .checkmark {
        background: #4a5568;
        border-color: #718096;
    }

    .filter-option:hover {
        background: rgba(102, 126, 234, 0.15);
    }

    .filter-option.checked {
        background: rgba(102, 126, 234, 0.2);
    }
}