/* === Search Filter Chips === */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px 0;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border, #E2E8F0);
    align-items: center;
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--border, #E2E8F0);
    border-radius: 20px;
    background: var(--bg-card, #FFFFFF);
    color: var(--text-primary, #1E293B);
    font-size: 13.5px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    position: relative;
    user-select: none;
}

.filter-chip:hover {
    border-color: #3B82F6;
    color: #3B82F6;
    background: #EFF6FF;
}

.filter-chip.is-active {
    border-color: #3B82F6;
    color: #3B82F6;
    background: #EFF6FF;
    font-weight: 600;
}

.filter-chip.is-active::after {
    content: '\f00d';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 10px;
    margin-left: 4px;
}

.filter-chip--primary {
    border-color: #EF4444;
    color: #EF4444;
    font-weight: 600;
}

.filter-chip--primary:hover {
    background: #FEF2F2;
    border-color: #DC2626;
    color: #DC2626;
}

.filter-chip--stock {
    /* Sẵn hàng chip */
}

.filter-chip--new {
    /* Hàng mới về */
}

/* Dropdown inside chip */
.filter-chip__dropdown {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    min-width: 200px;
    max-height: 300px;
    overflow-y: auto;
    background: var(--bg-card, #FFFFFF);
    border: 1px solid var(--border, #E2E8F0);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    padding: 8px 0;
    z-index: 100;
    display: none;
}

.filter-chip__dropdown.is-open {
    display: block;
    animation: filterDropIn 0.15s ease-out;
}

@keyframes filterDropIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.filter-chip__dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    font-size: 13.5px;
    color: var(--text-primary, #1E293B);
    cursor: pointer;
    transition: background 0.15s;
}

.filter-chip__dropdown-item:hover {
    background: #F1F5F9;
}

.filter-chip__dropdown-item.is-selected {
    color: #3B82F6;
    font-weight: 600;
}

.filter-chip__dropdown-item.is-selected::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 11px;
    color: #3B82F6;
}

/* Subcategory chips (displayed as inline tags) */
.subcategory-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px 0;
    margin-bottom: 8px;
}

.subcategory-chip {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border: 1px solid var(--border, #E2E8F0);
    border-radius: 6px;
    background: var(--bg-card, #FFFFFF);
    color: var(--text-primary, #1E293B);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.subcategory-chip:hover,
.subcategory-chip.is-active {
    border-color: #3B82F6;
    color: #3B82F6;
    background: #EFF6FF;
}

/* Brand filter chips */
.brand-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px 0;
}

.brand-chip {
    display: inline-flex;
    align-items: center;
    padding: 5px 12px;
    border: 1px solid var(--border, #E2E8F0);
    border-radius: 16px;
    background: var(--bg-card, #FFFFFF);
    color: var(--text-secondary, #64748B);
    font-size: 12.5px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.brand-chip:hover,
.brand-chip.is-active {
    border-color: #3B82F6;
    color: #3B82F6;
    background: #EFF6FF;
}

/* Active filters summary */
.active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px 0;
}

.active-filter-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: #EFF6FF;
    border: 1px solid #BFDBFE;
    border-radius: 16px;
    font-size: 12px;
    color: #1E40AF;
}

.active-filter-tag__remove {
    cursor: pointer;
    font-size: 10px;
    opacity: 0.7;
}

.active-filter-tag__remove:hover {
    opacity: 1;
}

.clear-all-filters {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: none;
    border: none;
    color: #EF4444;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
    .filter-bar {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 8px;
        -webkit-overflow-scrolling: touch;
    }
    
    .filter-chip {
        flex-shrink: 0;
    }
    
    .subcategory-bar {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    
    .subcategory-chip {
        flex-shrink: 0;
    }
}

/* Dark mode support */
.dark-mode .filter-chip {
    background: var(--bg-card, #1E293B);
    border-color: var(--border, #334155);
    color: var(--text-primary, #E2E8F0);
}

.dark-mode .filter-chip:hover,
.dark-mode .filter-chip.is-active {
    background: #1E3A5F;
    border-color: #3B82F6;
    color: #93C5FD;
}

.dark-mode .filter-chip__dropdown {
    background: var(--bg-card, #1E293B);
    border-color: var(--border, #334155);
}

.dark-mode .filter-chip__dropdown-item:hover {
    background: #334155;
}

.dark-mode .subcategory-chip {
    background: var(--bg-card, #1E293B);
    border-color: var(--border, #334155);
    color: var(--text-primary, #E2E8F0);
}

.dark-mode .brand-chip {
    background: var(--bg-card, #1E293B);
    border-color: var(--border, #334155);
    color: var(--text-secondary, #94A3B8);
}