/* ============================================================
   AI Tools — Advanced Filters UI
   ============================================================ */

/* ---- Filter Bar Wrapper ---- */
.ai-filters-bar {
    background: #fff;
    border: 1px solid #e8edf3;
    border-radius: 14px;
    padding: 16px 20px;
    margin-bottom: 28px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

/* Top row: filter groups + sort */
.ai-filters-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

/* ---- Filter Group (dropdown trigger) ---- */
.ai-filter-group {
    position: relative;
}

.ai-filter-trigger {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1.5px solid #e2e8f0;
    border-radius: 99px;
    background: #fff;
    font-size: 13.5px;
    font-weight: 500;
    color: #334155;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s, color 0.2s, box-shadow 0.2s;
    white-space: nowrap;
    line-height: 1;
    outline: none;
}

.ai-filter-trigger:hover,
.ai-filter-trigger.active {
    border-color: #6366f1;
    color: #6366f1;
    background: #faf5ff;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.08);
}

.ai-filter-trigger .ai-filter-count {
    background: #6366f1;
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    min-width: 16px;
    height: 16px;
    border-radius: 99px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    margin-left: 2px;
}

.ai-filter-trigger .fa-chevron-down {
    font-size: 10px;
    transition: transform 0.2s;
}

.ai-filter-trigger.open .fa-chevron-down {
    transform: rotate(180deg);
}

/* ---- Dropdown ---- */
.ai-filter-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    z-index: 900;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    min-width: 190px;
    padding: 8px 0;
    opacity: 0;
    transform: translateY(-6px) scale(0.97);
    pointer-events: none;
    transition: opacity 0.18s, transform 0.18s;
}

.ai-filter-dropdown.open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: all;
}

/* Dropdown item (checkbox label) */
.ai-filter-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 16px;
    cursor: pointer;
    font-size: 13.5px;
    color: #334155;
    transition: background 0.12s;
    user-select: none;
}

.ai-filter-option:hover {
    background: #f8fafc;
}

.ai-filter-option input[type="checkbox"],
.ai-filter-option input[type="radio"] {
    margin: 0;
    width: 15px;
    height: 15px;
    accent-color: #6366f1;
    cursor: pointer;
}

.ai-filter-option .option-emoji {
    font-size: 14px;
    width: 18px;
    text-align: center;
}

/* ---- Sort Select ---- */
.ai-filter-sort {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
}

.ai-filter-sort label {
    font-size: 13px;
    color: #64748b;
    white-space: nowrap;
}

.ai-filter-sort select {
    padding: 7px 30px 7px 12px;
    border: 1.5px solid #e2e8f0;
    border-radius: 99px;
    font-size: 13.5px;
    color: #334155;
    background: #fff;
    cursor: pointer;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%236366f1' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    transition: border-color 0.2s;
}

.ai-filter-sort select:focus,
.ai-filter-sort select:hover {
    border-color: #6366f1;
}

/* ---- Active Filter Pills ---- */
.ai-filter-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid #f1f5f9;
}

.ai-filter-pills:empty {
    display: none;
}

.ai-filter-pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px 4px 12px;
    background: #ede9fe;
    color: #7c3aed;
    border-radius: 99px;
    font-size: 12.5px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s;
}

.ai-filter-pill:hover {
    background: #ddd6fe;
}

.ai-filter-pill .pill-remove {
    font-size: 14px;
    line-height: 1;
    opacity: 0.6;
    font-weight: 400;
}

.ai-filter-pill .pill-remove:hover {
    opacity: 1;
}

/* Clear all button */
.ai-filter-clear-all {
    background: none;
    border: 1.5px solid #e2e8f0;
    color: #64748b;
    font-size: 12.5px;
    padding: 4px 12px;
    border-radius: 99px;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
}

.ai-filter-clear-all:hover {
    border-color: #ef4444;
    color: #ef4444;
}

/* ---- Results info ---- */
.ai-filter-results-info {
    font-size: 13px;
    color: #64748b;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.ai-filter-results-info strong {
    color: #334155;
}

/* ---- Loading Overlay ---- */
.ai-filters-loading {
    position: relative;
    pointer-events: none;
}

.ai-filters-loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(2px);
    border-radius: 8px;
    z-index: 10;
}

.ai-filters-spinner {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 11;
    width: 36px;
    height: 36px;
    border: 3px solid #e2e8f0;
    border-top-color: #6366f1;
    border-radius: 50%;
    animation: ai-spin 0.6s linear infinite;
}

.ai-filters-loading .ai-filters-spinner {
    display: block;
}

@keyframes ai-spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* ---- Responsive ---- */
@media (max-width: 640px) {
    .ai-filters-row {
        gap: 7px;
    }

    .ai-filter-trigger {
        font-size: 12.5px;
        padding: 7px 12px;
    }

    .ai-filter-sort {
        margin-left: 0;
        width: 100%;
    }

    .ai-filter-sort select {
        flex: 1;
    }
}