/**
 * DM Affiliations - Faceted Search Styles
 * Material-like flat design
 */

/* ===== VARIABILI ===== */
:root {
    --fs-primary: #2196F3;
    --fs-primary-dark: #1976D2;
    --fs-secondary: #757575;
    --fs-background: #FFFFFF;
    --fs-surface: #FAFAFA;
    --fs-border: #E0E0E0;
    --fs-text: #212121;
    --fs-text-secondary: #757575;
    --fs-error: #F44336;
    --fs-success: #4CAF50;
    --fs-shadow: 0 2px 4px rgba(0,0,0,0.1);
    --fs-shadow-hover: 0 4px 8px rgba(0,0,0,0.15);
    --fs-radius: 4px;
    --fs-transition: all 0.3s ease;
}

/* ===== WRAPPER PRINCIPALE ===== */
.fs-faceted-search {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--fs-text);
}

/* ===== TOP AREA ===== */
.fs-top-area {
    margin-bottom: 24px;
}

.fs-search-sort-row {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.fs-search-box {
    flex: 1;
    min-width: 250px;
}

.fs-search-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--fs-border);
    border-radius: var(--fs-radius);
    font-size: 16px;
    transition: var(--fs-transition);
    background: var(--fs-background);
    color: var(--fs-text);
}

.fs-search-input:focus {
    outline: none;
    border-color: var(--fs-primary);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.fs-sort-box {
    min-width: 200px;
}

.fs-sort-select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--fs-border);
    border-radius: var(--fs-radius);
    font-size: 16px;
    background: var(--fs-background);
    color: var(--fs-text);
    cursor: pointer;
    transition: var(--fs-transition);
}

.fs-sort-select:focus {
    outline: none;
    border-color: var(--fs-primary);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

/* ===== CHIPS FILTRI ATTIVI ===== */
.fs-active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
    min-height: 40px;
}

.fs-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--fs-primary);
    color: white;
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
    transition: var(--fs-transition);
    border: none;
}

.fs-chip:hover {
    background: var(--fs-primary-dark);
    box-shadow: var(--fs-shadow);
}

.fs-chip:focus {
    outline: 2px solid var(--fs-primary-dark);
    outline-offset: 2px;
}

.fs-chip-label {
    font-weight: 500;
}

.fs-chip-remove {
    background: none;
    border: none;
    color: white;
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--fs-transition);
}

.fs-chip-remove:hover {
    background: rgba(255, 255, 255, 0.2);
}

.fs-clear-all {
    padding: 8px 16px;
    background: var(--fs-surface);
    border: 1px solid var(--fs-border);
    border-radius: var(--fs-radius);
    color: var(--fs-text);
    font-size: 14px;
    cursor: pointer;
    transition: var(--fs-transition);
}

.fs-clear-all:hover {
    background: var(--fs-border);
}

.fs-clear-all:focus {
    outline: 2px solid var(--fs-primary);
    outline-offset: 2px;
}

/* ===== MAIN CONTENT ===== */
.fs-main-content {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

/* ===== SIDEBAR ===== */
.fs-sidebar {
    width: 280px;
    flex-shrink: 0;
    background: var(--fs-surface);
    border: 1px solid var(--fs-border);
    border-radius: var(--fs-radius);
    padding: 20px;
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
}

.fs-sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--fs-border);
}

.fs-sidebar-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--fs-text);
}

.fs-drawer-close {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    color: var(--fs-text-secondary);
    padding: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    transition: var(--fs-transition);
}

.fs-drawer-close:hover {
    background: var(--fs-border);
}

/* ===== FACET ===== */
.fs-facet {
    margin-bottom: 24px;
}

.fs-facet:last-child {
    margin-bottom: 0;
}

.fs-facet-title {
    margin: 0 0 12px 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--fs-text);
}

.fs-facet-empty {
    padding: 12px;
    color: var(--fs-text-secondary);
    font-style: italic;
    text-align: center;
    font-size: 0.9em;
}

.fs-facet-items {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.fs-facet-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    border-radius: var(--fs-radius);
    cursor: pointer;
    transition: var(--fs-transition);
    user-select: none;
}

.fs-facet-item:hover {
    background: rgba(33, 150, 243, 0.05);
}

.fs-facet-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--fs-primary);
}

.fs-facet-label {
    flex: 1;
    font-size: 14px;
    color: var(--fs-text);
}

.fs-facet-count {
    font-size: 12px;
    color: var(--fs-text-secondary);
}

.fs-show-more {
    margin-top: 8px;
    padding: 8px 12px;
    background: none;
    border: 1px solid var(--fs-border);
    border-radius: var(--fs-radius);
    color: var(--fs-primary);
    font-size: 13px;
    cursor: pointer;
    transition: var(--fs-transition);
}

.fs-show-more:hover {
    background: var(--fs-surface);
    border-color: var(--fs-primary);
}

/* ===== RESULTS AREA ===== */
.fs-results-area {
    flex: 1;
    min-width: 0;
}

.fs-results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.fs-results-count {
    font-size: 16px;
    color: var(--fs-text);
}

.fs-count-number {
    font-weight: 600;
    color: var(--fs-primary);
}

.fs-results-time {
    font-size: 14px;
    color: var(--fs-text-secondary);
}

.fs-toggle-filters {
    display: none;
    padding: 10px 16px;
    background: var(--fs-primary);
    color: white;
    border: none;
    border-radius: var(--fs-radius);
    font-size: 14px;
    cursor: pointer;
    transition: var(--fs-transition);
}

.fs-toggle-filters:hover {
    background: var(--fs-primary-dark);
}

.fs-toggle-filters:focus {
    outline: 2px solid var(--fs-primary-dark);
    outline-offset: 2px;
}

/* ===== RESULTS LIST ===== */
.fs-results-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.fs-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    gap: 16px;
}

.fs-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--fs-border);
    border-top-color: var(--fs-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.fs-result-item {
    padding: 20px;
    background: var(--fs-background);
    border: 1px solid var(--fs-border);
    border-radius: var(--fs-radius);
    transition: var(--fs-transition);
}

.fs-result-item:hover {
    box-shadow: var(--fs-shadow);
    border-color: var(--fs-primary);
}

.fs-result-title {
    margin: 0 0 8px 0;
    font-size: 20px;
    font-weight: 600;
    color: var(--fs-primary);
}

.fs-result-excerpt {
    margin: 0 0 12px 0;
    font-size: 14px;
    color: var(--fs-text-secondary);
    line-height: 1.6;
}

.fs-result-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: var(--fs-text-secondary);
}

.fs-meta-date,
.fs-meta-tipologia,
.fs-meta-fondo,
.fs-meta-luogo {
    padding: 4px 8px;
    background: var(--fs-surface);
    border-radius: var(--fs-radius);
}

.fs-no-results,
.fs-error {
    padding: 40px 20px;
    text-align: center;
    color: var(--fs-text-secondary);
    font-size: 16px;
}

.fs-error {
    color: var(--fs-error);
}

/* ===== PAGINAZIONE ===== */
.fs-pagination {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--fs-border);
}

.fs-pagination-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
}

.fs-pagination-btn {
    padding: 10px 20px;
    background: var(--fs-background);
    border: 1px solid var(--fs-border);
    border-radius: var(--fs-radius);
    color: var(--fs-text);
    font-size: 14px;
    cursor: pointer;
    transition: var(--fs-transition);
}

.fs-pagination-btn:not([disabled]):hover {
    background: var(--fs-primary);
    color: white;
    border-color: var(--fs-primary);
}

.fs-pagination-btn:focus {
    outline: 2px solid var(--fs-primary);
    outline-offset: 2px;
}

.fs-pagination-btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
}

.fs-pagination-info {
    font-size: 14px;
    color: var(--fs-text-secondary);
}

/* ===== RESPONSIVE - MOBILE ===== */
@media (max-width: 991px) {
    .fs-faceted-search {
        padding: 12px;
    }
    
    .fs-main-content {
        flex-direction: column;
    }
    
    .fs-sidebar {
        width: 100%;
        position: fixed;
        top: 0;
        left: -100%;
        height: 100vh;
        z-index: 10000;
        max-height: 100vh;
        transition: left 0.3s ease;
        box-shadow: 2px 0 8px rgba(0,0,0,0.2);
    }
    
    .fs-sidebar.fs-sidebar-open {
        left: 0;
    }
    
    .fs-drawer-close {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .fs-toggle-filters {
        display: inline-block;
    }
    
    .fs-results-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .fs-search-sort-row {
        flex-direction: column;
    }
    
    .fs-search-box,
    .fs-sort-box {
        width: 100%;
    }
}

/* ===== OVERLAY MOBILE ===== */
@media (max-width: 991px) {
    .fs-sidebar.fs-sidebar-open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: -1;
    }
}

/* ===== ACCESSIBILITÀ ===== */
.fs-chip:focus-visible,
.fs-facet-item:focus-within,
.fs-result-item:focus-within {
    outline: 2px solid var(--fs-primary);
    outline-offset: 2px;
}

/* ===== PRINT ===== */
@media print {
    .fs-sidebar,
    .fs-toggle-filters,
    .fs-pagination,
    .fs-clear-all {
        display: none;
    }
    
    .fs-results-area {
        width: 100%;
    }
}