/**
 * Advanced Conversation Filters Styles
 * Multi-criteria filtering interface
 */

/* Filter Panel Container */
.conversation-filters-panel {
    background: var(--bg-secondary, #f8fafc);
    border: 1px solid var(--border-primary, #e2e8f0);
    border-radius: 12px;
    margin-bottom: 20px;
    overflow: hidden;
}

/* Panel Header */
.filter-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    border-bottom: 1px solid var(--border-primary, #e2e8f0);
}

.filter-panel-header h4 {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary, #1a202c);
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-panel-header h4 i {
    color: var(--accent-primary, #C41E3A);
    font-size: 14px;
}

.filter-clear-btn {
    background: none;
    border: none;
    color: var(--text-tertiary, #a0aec0);
    cursor: pointer;
    font-size: 16px;
    padding: 4px;
    transition: all 0.2s;
}

.filter-clear-btn:hover {
    color: var(--accent-primary, #C41E3A);
    transform: rotate(90deg);
}

/* Panel Body */
.filter-panel-body {
    padding: 16px 18px;
}

/* Filter Groups */
.filter-group {
    margin-bottom: 20px;
}

.filter-group:last-child {
    margin-bottom: 0;
}

.filter-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary, #4a5568);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-label i {
    font-size: 12px;
    color: var(--accent-primary, #C41E3A);
}

/* Filter Options */
.filter-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-primary, #ffffff);
    border: 1px solid var(--border-primary, #e2e8f0);
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary, #1a202c);
    transition: all 0.2s;
}

.filter-checkbox:hover {
    background: var(--bg-tertiary, #f6f8fa);
    border-color: var(--accent-primary, #C41E3A);
}

.filter-checkbox input[type="checkbox"] {
    cursor: pointer;
    width: 16px;
    height: 16px;
    accent-color: var(--accent-primary, #C41E3A);
}

.filter-checkbox span {
    flex: 1;
}

.filter-tag-count {
    font-size: 12px;
    color: var(--text-tertiary, #a0aec0);
    background: var(--bg-secondary, #f8fafc);
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 600;
}

/* Search Box */
.filter-search-box {
    position: relative;
    margin-bottom: 10px;
}

.filter-search-input {
    width: 100%;
    padding: 10px 36px 10px 12px;
    border: 1px solid var(--border-primary, #e2e8f0);
    border-radius: 8px;
    font-size: 14px;
    background: var(--bg-primary, #ffffff);
    color: var(--text-primary, #1a202c);
    transition: all 0.2s;
}

.filter-search-input:focus {
    outline: none;
    border-color: var(--accent-primary, #C41E3A);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

.filter-search-box i {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary, #a0aec0);
    font-size: 14px;
}

/* Tags List */
.filter-tags-list {
    max-height: 200px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-right: 4px;
}

.filter-tag-option {
    padding: 6px 10px;
}

/* Date Inputs */
.filter-date-inputs {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-date-input {
    flex: 1;
    padding: 8px 10px;
    border: 1px solid var(--border-primary, #e2e8f0);
    border-radius: 8px;
    font-size: 13px;
    background: var(--bg-primary, #ffffff);
    color: var(--text-primary, #1a202c);
    transition: all 0.2s;
}

.filter-date-input:focus {
    outline: none;
    border-color: var(--accent-primary, #C41E3A);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

.filter-date-separator {
    font-size: 13px;
    color: var(--text-tertiary, #a0aec0);
}

/* Quick Date Buttons */
.filter-quick-dates {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.filter-quick-date-btn {
    padding: 8px 12px;
    background: var(--bg-primary, #ffffff);
    border: 1px solid var(--border-primary, #e2e8f0);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary, #1a202c);
    cursor: pointer;
    transition: all 0.2s;
}

.filter-quick-date-btn:hover {
    background: var(--accent-primary, #C41E3A);
    color: white;
    border-color: var(--accent-primary, #C41E3A);
}

/* Range Inputs */
.filter-range {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-range-input {
    flex: 1;
    padding: 8px 10px;
    border: 1px solid var(--border-primary, #e2e8f0);
    border-radius: 8px;
    font-size: 13px;
    background: var(--bg-primary, #ffffff);
    color: var(--text-primary, #1a202c);
    transition: all 0.2s;
}

.filter-range-input:focus {
    outline: none;
    border-color: var(--accent-primary, #C41E3A);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

.filter-range span {
    font-size: 14px;
    color: var(--text-tertiary, #a0aec0);
}

/* Active Filters Summary */
.filter-active-summary {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-primary, #e2e8f0);
}

.filter-active-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.filter-active-header strong {
    font-size: 13px;
    color: var(--text-primary, #1a202c);
}

.filter-clear-btn-small {
    background: none;
    border: none;
    color: var(--accent-primary, #C41E3A);
    font-size: 12px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
}

.filter-clear-btn-small:hover {
    background: rgba(196, 30, 58, 0.1);
}

.filter-active-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.filter-active-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: linear-gradient(135deg, var(--accent-primary, #C41E3A) 0%, #a01829 100%);
    color: white;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 500;
}

.filter-active-tag i {
    cursor: pointer;
    font-size: 10px;
    padding: 2px;
    border-radius: 50%;
    transition: all 0.2s;
}

.filter-active-tag i:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Empty/Loading States */
.filter-empty,
.filter-loading {
    padding: 16px;
    text-align: center;
    color: var(--text-tertiary, #a0aec0);
    font-size: 13px;
    font-style: italic;
}

.filter-loading {
    color: var(--text-secondary, #4a5568);
}

/* Dark Mode */
html.dark-mode .conversation-filters-panel {
    background: #111827;
    border-color: #374151;
}

html.dark-mode .filter-panel-header {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    border-color: #4b5563;
}

html.dark-mode .filter-checkbox {
    background: #1f2937;
    border-color: #374151;
    color: #f9fafb;
}

html.dark-mode .filter-checkbox:hover {
    background: #374151;
}

html.dark-mode .filter-tag-count {
    background: #374151;
    color: #9ca3af;
}

html.dark-mode .filter-search-input,
html.dark-mode .filter-date-input,
html.dark-mode .filter-range-input {
    background: #1f2937;
    border-color: #374151;
    color: #f9fafb;
}

html.dark-mode .filter-quick-date-btn {
    background: #1f2937;
    border-color: #374151;
    color: #f9fafb;
}

html.dark-mode .filter-quick-date-btn:hover {
    background: var(--accent-primary, #C41E3A);
    color: white;
}

html.dark-mode .filter-clear-btn {
    color: #6b7280;
}

html.dark-mode .filter-clear-btn:hover {
    color: var(--accent-primary, #C41E3A);
}

/* Scrollbar */
.filter-tags-list::-webkit-scrollbar {
    width: 6px;
}

.filter-tags-list::-webkit-scrollbar-track {
    background: transparent;
}

.filter-tags-list::-webkit-scrollbar-thumb {
    background: var(--border-primary, #e2e8f0);
    border-radius: 3px;
}

.filter-tags-list::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary, #C41E3A);
}

html.dark-mode .filter-tags-list::-webkit-scrollbar-thumb {
    background: #4b5563;
}

html.dark-mode .filter-tags-list::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary, #C41E3A);
}

/* Responsive */
@media (max-width: 768px) {
    .filter-panel-body {
        padding: 12px 14px;
    }

    .filter-group {
        margin-bottom: 16px;
    }

    .filter-checkbox {
        padding: 6px 10px;
        font-size: 13px;
    }

    .filter-quick-dates {
        grid-template-columns: 1fr;
    }

    .filter-date-inputs {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-date-separator {
        text-align: center;
    }
}