/* Advanced Filter Builder — tree-based query constructor */

.afb-group {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius);
    padding: 8px;
    margin: 4px 0;
    background: var(--color-gray-50);
}
.afb-nested {
    margin-left: 16px;
    border-left: 3px solid var(--color-primary);
}
.afb-group-header {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 6px;
    flex-wrap: wrap;
}
.afb-not-btn {
    font-size: 0.75rem;
    padding: 2px 8px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius);
    background: #fff;
    cursor: pointer;
    color: var(--color-gray-500);
    font-weight: 600;
}
.afb-not-btn.active {
    background: var(--color-danger);
    color: #fff;
    border-color: var(--color-danger);
}
.afb-op-select {
    font-size: 0.8rem;
    padding: 2px 6px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius);
    font-weight: 600;
    background: #fff;
}
.afb-btn {
    font-size: 0.75rem;
    padding: 2px 8px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius);
    background: #fff;
    cursor: pointer;
}
.afb-add-rule { color: var(--color-primary); border-color: var(--color-primary); }
.afb-add-group { color: var(--color-success); border-color: var(--color-success); }
.afb-del-btn { color: var(--color-danger); border-color: var(--color-danger); }
.afb-btn:hover { opacity: 0.8; }

/* Rules */
.afb-rule {
    display: flex;
    align-items: center;
    gap: 4px;
    margin: 3px 0;
    flex-wrap: wrap;
}
.afb-field-select,
.afb-op-select-rule {
    font-size: 0.8rem;
    padding: 3px 6px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius);
    background: #fff;
}
.afb-field-select { min-width: 140px; max-width: 200px; }
.afb-op-select-rule { min-width: 100px; }

.afb-value-container {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}
.afb-value-input {
    font-size: 0.8rem;
    padding: 3px 6px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius);
    background: #fff;
}
.afb-value-input[type="number"],
.afb-value-input[type="date"] { max-width: 130px; }
.afb-value-input[type="text"] { min-width: 120px; }
.afb-between { max-width: 110px; }
.afb-sep { font-size: 0.78rem; color: var(--color-gray-500); }
.afb-multi-label {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    font-size: 0.78rem;
    margin-right: 6px;
}

/* Date period */
.afb-date-period {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}

/* Preview */
.afb-preview {
    margin-top: 8px;
    padding: 8px 12px;
    background: #fff;
    border: 1px dashed var(--color-gray-300);
    border-radius: var(--radius);
    font-size: 0.8rem;
    color: var(--color-gray-600);
    font-family: monospace;
    white-space: pre-wrap;
    word-break: break-word;
    min-height: 24px;
}

/* Mobile */
@media (max-width: 768px) {
    .afb-nested { margin-left: 8px; }
    .afb-rule { flex-direction: column; align-items: flex-start; }
    .afb-field-select { max-width: 100%; width: 100%; }
    .afb-group-header { gap: 3px; }
}