/**
 * Review Filters Styles
 * Amazon-style filter bar with mobile collapsible panel
 *
 * @package YayReviews
 */

/* CSS Variables */
:root {
    --yayrev-filter-bg: #f7f7f7;
    --yayrev-filter-border: #e0e0e0;
    --yayrev-filter-text: #333;
    --yayrev-filter-text-muted: #666;
    --yayrev-filter-accent: #0066c0;
    --yayrev-filter-accent-hover: #004b8c;
    --yayrev-filter-radius: 4px;
    --yayrev-filter-gap: 16px;
    --yayrev-filter-transition: 0.2s ease;
}

/* Container */
.yayrev-filter-bar {
    margin-bottom: 20px;
    padding: 16px;
    background: var(--yayrev-filter-bg);
    border: 1px solid var(--yayrev-filter-border);
    border-radius: var(--yayrev-filter-radius);
}

/* Mobile Toggle */
.yayrev-filter-toggle {
    display: none;
    width: 100%;
    padding: 12px 16px;
    background: white;
    border: 1px solid var(--yayrev-filter-border);
    border-radius: var(--yayrev-filter-radius);
    font-size: 14px;
    font-weight: 500;
    color: var(--yayrev-filter-text);
    cursor: pointer;
    position: relative;
    text-align: left;
}

.yayrev-filter-toggle:hover,
.yayrev-filter-toggle:focus {
    border-color: var(--yayrev-filter-accent);
    outline: none;
}

.yayrev-filter-toggle-icon {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
}

.yayrev-filter-badge {
    position: absolute;
    top: 8px;
    right: 40px;
    width: 8px;
    height: 8px;
    background: var(--yayrev-filter-accent);
    border-radius: 50%;
}

/* Filter Panel - Desktop */
.yayrev-filter-panel {
    display: flex;
    flex-wrap: wrap;
    gap: var(--yayrev-filter-gap);
    align-items: flex-start;
}

/* Filter Groups */
.yayrev-filter-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.yayrev-filter-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--yayrev-filter-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
    padding: 0;
    border: 0;
}

/* Dropdowns */
.yayrev-filter-select {
    padding: 8px 32px 8px 12px;
    font-size: 14px;
    color: var(--yayrev-filter-text);
    background: white url('data:image/svg+xml;charset=utf-8,%3Csvg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12"%3E%3Cpath fill="%23333" d="M6 8L1 3h10z"/%3E%3C/svg%3E') no-repeat right 12px center;
    background-size: 10px;
    border: 1px solid var(--yayrev-filter-border);
    border-radius: var(--yayrev-filter-radius);
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
    min-width: 140px;
}

.yayrev-filter-select:hover,
.yayrev-filter-select:focus {
    border-color: var(--yayrev-filter-accent);
    outline: none;
}

/* Checkboxes */
.yayrev-filter-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.yayrev-filter-checkbox {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: white;
    border: 1px solid var(--yayrev-filter-border);
    border-radius: var(--yayrev-filter-radius);
    font-size: 13px;
    cursor: pointer;
    transition: border-color var(--yayrev-filter-transition),
                background var(--yayrev-filter-transition);
}

.yayrev-filter-checkbox:hover {
    border-color: var(--yayrev-filter-accent);
}

.yayrev-filter-checkbox input {
    margin: 0;
    cursor: pointer;
}

.yayrev-filter-checkbox input:checked + span,
.yayrev-filter-checkbox input:checked ~ .yayrev-filter-star {
    color: var(--yayrev-filter-accent);
}

.yayrev-filter-checkbox:has(input:checked) {
    border-color: var(--yayrev-filter-accent);
    background: rgba(0, 102, 192, 0.05);
}

/* Boolean Toggles */
.yayrev-filter-toggles .yayrev-filter-checkboxes {
    flex-direction: column;
    gap: 4px;
}

.yayrev-filter-toggles .yayrev-filter-checkbox {
    padding: 4px 8px;
    background: transparent;
    border: none;
}

.yayrev-filter-toggles .yayrev-filter-checkbox:hover {
    background: rgba(0, 0, 0, 0.03);
}

/* Clear All Button */
.yayrev-clear-all {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--yayrev-filter-accent);
    border-radius: var(--yayrev-filter-radius);
    color: var(--yayrev-filter-accent);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background var(--yayrev-filter-transition),
                color var(--yayrev-filter-transition);
}

.yayrev-clear-all:hover,
.yayrev-clear-all:focus {
    background: var(--yayrev-filter-accent);
    color: white;
    outline: none;
}

/* Actions Group */
.yayrev-filter-actions {
    margin-left: auto;
    align-self: flex-end;
}

/* Reviews Container */
#reviews {
    position: relative;
    min-height: 200px;
}

#reviews .commentlist {
    transition: opacity 0.3s ease;
}

/* Loading State */
#reviews.yayrev-loading {
    position: relative;
}

#reviews.yayrev-loading .commentlist {
    opacity: 0.4;
    pointer-events: none;
}

#reviews.yayrev-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid var(--yayrev-filter-border);
    border-top-color: var(--yayrev-filter-accent);
    border-radius: 50%;
    animation: yayrev-spin 0.8s linear infinite;
}

@keyframes yayrev-spin {
    to { transform: rotate(360deg); }
}

/* Update Animation */
.commentlist.yayrev-updated {
    animation: yayrev-fade-in 0.3s ease;
}

@keyframes yayrev-fade-in {
    from { opacity: 0.5; }
    to { opacity: 1; }
}

/* Empty State */
.yayrev-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
    background: var(--yayrev-filter-bg);
    border: 1px dashed var(--yayrev-filter-border);
    border-radius: 8px;
    margin: 20px 0;
}

.yayrev-empty-state__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin-bottom: 16px;
    background: linear-gradient(135deg, rgba(0, 102, 192, 0.1) 0%, rgba(0, 102, 192, 0.05) 100%);
    border-radius: 50%;
    color: var(--yayrev-filter-accent);
}

.yayrev-empty-state__icon svg {
    opacity: 0.8;
}

.yayrev-empty-state__title {
    margin: 0 0 8px;
    font-size: 18px;
    font-weight: 600;
    color: var(--yayrev-filter-text);
}

.yayrev-empty-state__message {
    margin: 0 0 20px;
    font-size: 14px;
    color: var(--yayrev-filter-text-muted);
    max-width: 320px;
    line-height: 1.5;
}

.yayrev-empty-state__action {
    padding: 10px 24px;
    background: var(--yayrev-filter-accent);
    border: none;
    border-radius: var(--yayrev-filter-radius);
    color: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background var(--yayrev-filter-transition),
                transform var(--yayrev-filter-transition);
}

.yayrev-empty-state__action:hover,
.yayrev-empty-state__action:focus {
    background: var(--yayrev-filter-accent-hover);
    transform: translateY(-1px);
    outline: none;
}

.yayrev-empty-state__action:active {
    transform: translateY(0);
}

/* Error State */
.yayrev-filter-error {
    margin: 16px 0;
    padding: 16px;
    background: #fff8f8;
    border: 1px solid #f5c6cb;
    border-radius: var(--yayrev-filter-radius);
    text-align: center;
}

.yayrev-filter-error p {
    margin: 0 0 12px;
    color: #721c24;
}

.yayrev-retry {
    padding: 8px 16px;
    background: #dc3545;
    border: none;
    border-radius: var(--yayrev-filter-radius);
    color: white;
    font-size: 13px;
    cursor: pointer;
}

.yayrev-retry:hover {
    background: #c82333;
    color: white;
}

/* Rating Bar Active State (integration with existing rating-summary) */
.yayrev-rating-bar--active {
    background: rgba(0, 102, 192, 0.1) !important;
}

/* Screen Reader Only */
.screen-reader-text {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Mobile Styles */
@media (max-width: 768px) {
    .yayrev-filter-toggle {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .yayrev-filter-panel {
        display: none;
        flex-direction: column;
        margin-top: 12px;
        padding-top: 12px;
        border-top: 1px solid var(--yayrev-filter-border);
    }

    .yayrev-filter-panel.is-open {
        display: flex;
    }

    .yayrev-filter-toggle[aria-expanded="true"] + .yayrev-filter-panel {
        display: flex;
    }

    .yayrev-filter-group {
        width: 100%;
    }

    .yayrev-filter-select {
        width: 100%;
    }

    .yayrev-filter-actions {
        margin-left: 0;
        margin-top: 8px;
    }

    .yayrev-clear-all {
        width: 100%;
    }

    .yayrev-ajax-pagination .page-numbers {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* Focus Visible for Keyboard Nav */
.yayrev-filter-bar *:focus-visible {
    outline: 2px solid var(--yayrev-filter-accent);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .yayrev-filter-bar {
        border-width: 2px;
    }

    .yayrev-filter-select,
    .yayrev-filter-checkbox,
    .yayrev-clear-all {
        border-width: 2px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .yayrev-filter-checkbox,
    .yayrev-clear-all {
        transition: none;
    }

    #reviews.yayrev-loading::after {
        animation: none;
    }

    .commentlist.yayrev-updated {
        animation: none;
    }
}