/**
 * Filter component (used by archive sidebar).
 * Facet group → checkbox list → selected pills → clear all.
 */

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--travel-space-md);
    padding-bottom: var(--travel-space-sm);
    border-bottom: 1px solid #eee;
}
.filter-title { margin: 0; font-size: var(--travel-fs-h3); }
.filter-clear {
    background: transparent;
    border: none;
    color: var(--travel-accent);
    font-weight: 700;
    cursor: pointer;
    font-size: var(--travel-fs-small);
    padding: var(--travel-space-xs) var(--travel-space-sm);
    border-radius: var(--travel-radius-btn);
    transition: var(--travel-transition);
}
.filter-clear:hover { background: rgba(230,126,34,0.1); }
.filter-clear:focus-visible { outline: 2px solid var(--travel-accent); outline-offset: 2px; }

/* Selected pills */
.filter-selected {
    display: flex;
    flex-wrap: wrap;
    gap: var(--travel-space-xs);
    margin-bottom: var(--travel-space-md);
}
.filter-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--travel-accent);
    color: #fff;
    padding: 2px 4px 2px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}
.filter-pill button,
.filter-pill__remove {
    appearance: none;
    background: rgba(255,255,255,0.2);
    border: none;
    color: #fff;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 12px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.filter-pill button:hover { background: rgba(255,255,255,0.4); }

/* Form & groups */
.filter-form { display: flex; flex-direction: column; gap: var(--travel-space-md); }

.filter-group {
    padding-bottom: var(--travel-space-md);
    border-bottom: 1px solid #f0f1f3;
}
.filter-group:last-of-type { border-bottom: none; }
.filter-group-title {
    font-size: var(--travel-fs-small);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--travel-text-muted);
    margin-bottom: var(--travel-space-sm);
}

.filter-options {
    display: flex;
    flex-direction: column;
    gap: 2px;
    max-height: 240px;
    overflow-y: auto;
}

.filter-option {
    display: flex;
    align-items: center;
    gap: var(--travel-space-sm);
    padding: var(--travel-space-xs) var(--travel-space-sm);
    border-radius: var(--travel-radius-btn);
    cursor: pointer;
    font-size: var(--travel-fs-small);
    transition: background var(--travel-transition);
}
.filter-option:hover { background: var(--travel-bg); }

/* Custom checkbox visual */
.filter-option input[type=checkbox] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid #cbd0d6;
    border-radius: 4px;
    background: #fff;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: var(--travel-transition);
}
.filter-option input[type=checkbox]:checked {
    background: var(--travel-accent);
    border-color: var(--travel-accent);
}
.filter-option input[type=checkbox]:checked::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 0px;
    width: 5px;
    height: 10px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}
.filter-option input[type=checkbox]:focus-visible {
    outline: 2px solid var(--travel-accent);
    outline-offset: 2px;
}

.filter-option-label { flex-grow: 1; color: var(--travel-text-main); }
.filter-option-count { color: var(--travel-text-secondary); font-size: 12px; }

.filter-option input[type=checkbox]:checked ~ .filter-option-label {
    color: var(--travel-accent);
    font-weight: 700;
}

.filter-empty {
    color: var(--travel-text-muted);
    font-size: var(--travel-fs-small);
    padding: var(--travel-space-sm);
    text-align: center;
    font-style: italic;
}

/* Submit button (mobile sticky) */
.filter-submit {
    appearance: none;
    background: var(--travel-accent);
    color: #fff;
    border: none;
    padding: var(--travel-space-md);
    border-radius: var(--travel-radius-btn);
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: var(--travel-transition);
    margin-top: var(--travel-space-sm);
}
.filter-submit:hover { background: #d35400; }
.filter-submit:focus-visible { outline: 2px solid var(--travel-primary); outline-offset: 2px; }

/* Hide submit on desktop (live filters) */
@media (min-width: 1024px) {
    .filter-submit { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    .filter-option,
    .filter-option input[type=checkbox] { transition: none; }
}