/* ==========================================================================
   Area Drilldown Styles
   SUUMO-style hierarchical filter: Region → Pref+City → Station
   2026-03-23
   ========================================================================== */

/* Drilldown container inside dropdown */
.cocofit-drilldown {
    overflow: hidden;
}

.cocofit-drilldown__viewport {
    position: relative;
    overflow: hidden;
    min-height: 200px;
}

.cocofit-drilldown__step {
    width: 100%;
}

/* Slide animations */
@keyframes cocofit-slide-out-left {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(-100%); opacity: 0; }
}
@keyframes cocofit-slide-in-right {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}
@keyframes cocofit-slide-out-right {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}
@keyframes cocofit-slide-in-left {
    from { transform: translateX(-100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.cocofit-drilldown--slide-out-left {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    animation: cocofit-slide-out-left 0.25s ease-out forwards;
}
.cocofit-drilldown--slide-in-right {
    animation: cocofit-slide-in-right 0.25s ease-out forwards;
}
.cocofit-drilldown--slide-out-right {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    animation: cocofit-slide-out-right 0.25s ease-out forwards;
}
.cocofit-drilldown--slide-in-left {
    animation: cocofit-slide-in-left 0.25s ease-out forwards;
}

@media (prefers-reduced-motion: reduce) {
    .cocofit-drilldown--slide-out-left,
    .cocofit-drilldown--slide-in-right,
    .cocofit-drilldown--slide-out-right,
    .cocofit-drilldown--slide-in-left {
        animation: none;
    }
}

/* Header */
.cocofit-drilldown__header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border-bottom: 1px solid #e5e7eb;
    min-height: 44px;
}

.cocofit-drilldown__title {
    font-size: 14px;
    font-weight: 600;
    color: #1f2937;
    margin: 0;
    flex: 1;
}

.cocofit-drilldown__clear-btn {
    font-size: 12px;
    color: #6b7280;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background 0.15s, color 0.15s;
}
.cocofit-drilldown__clear-btn:hover {
    background: #f3f4f6;
    color: #ef4444;
}

.cocofit-drilldown__back-btn {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    font-size: 13px;
    color: #22bcac;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background 0.15s;
    white-space: nowrap;
}
.cocofit-drilldown__back-btn:hover {
    background: #f0fdfa;
}
.cocofit-drilldown__back-btn svg {
    flex-shrink: 0;
}

.cocofit-drilldown__breadcrumb {
    font-size: 14px;
    font-weight: 600;
    color: #1f2937;
}

/* Selected tags */
.cocofit-drilldown__selected-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px 16px;
    border-bottom: 1px solid #f3f4f6;
    max-height: 80px;
    overflow-y: auto;
}

.cocofit-drilldown__tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: #374151;
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    border-radius: 9999px;
    padding: 2px 8px 2px 10px;
    white-space: nowrap;
}
.cocofit-drilldown__tag--station {
    background: #eff6ff;
    border-color: #bfdbfe;
}

.cocofit-drilldown__tag-remove {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    font-size: 12px;
    line-height: 1;
    color: #9ca3af;
    background: none;
    border: none;
    cursor: pointer;
    border-radius: 50%;
    padding: 0;
    transition: color 0.15s, background 0.15s;
}
.cocofit-drilldown__tag-remove:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

/* Region grid */
.cocofit-drilldown__region-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    padding: 16px;
}

.cocofit-drilldown__region-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 16px;
    font-size: 14px;
    font-weight: 500;
    color: #1f2937;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s;
    min-height: 44px;
}
.cocofit-drilldown__region-btn:hover:not(.is-disabled) {
    background: #f0fdfa;
    border-color: #22bcac;
    color: #22bcac;
}
.cocofit-drilldown__region-btn.is-disabled {
    color: #d1d5db;
    background: #f9fafb;
    cursor: default;
    opacity: 0.5;
}
.cocofit-drilldown__region-btn.has-selection {
    border-color: #22bcac;
    background: #f0fdfa;
}

.cocofit-drilldown__region-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    background: #22bcac;
    border-radius: 9999px;
    padding: 0 6px;
}

/* Pref group */
.cocofit-drilldown__body {
    max-height: 360px;
    overflow-y: auto;
    padding: 8px 0;
}

.cocofit-drilldown__pref-group {
    padding: 0 16px;
}
.cocofit-drilldown__pref-group + .cocofit-drilldown__pref-group {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid #f3f4f6;
}

.cocofit-drilldown__pref-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 0;
    margin-bottom: 6px;
}

.cocofit-drilldown__pref-name {
    font-size: 13px;
    font-weight: 600;
    color: #374151;
}

.cocofit-drilldown__station-link {
    font-size: 12px;
    color: #22bcac;
    background: none;
    border: none;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    transition: background 0.15s;
    white-space: nowrap;
}
.cocofit-drilldown__station-link:hover {
    background: #f0fdfa;
    text-decoration: underline;
}

/* Checkbox grid */
.cocofit-drilldown__checkbox-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4px 12px;
    padding: 2px 0 8px;
}

.cocofit-drilldown__checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 4px;
    font-size: 13px;
    color: #374151;
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.1s;
}
.cocofit-drilldown__checkbox-label:hover {
    background: #f9fafb;
}
.cocofit-drilldown__checkbox-label--station {
    color: #1e40af;
}

.cocofit-drilldown__checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    accent-color: #22bcac;
    margin: 0;
}

.cocofit-drilldown__empty {
    padding: 24px 16px;
    text-align: center;
    color: #9ca3af;
    font-size: 13px;
}

/* Mobile: full-width grid */
@media (max-width: 480px) {
    .cocofit-drilldown__region-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
        padding: 12px;
    }
    .cocofit-drilldown__region-btn {
        padding: 10px 12px;
        font-size: 13px;
    }
    .cocofit-drilldown__checkbox-grid {
        grid-template-columns: 1fr;
    }
    .cocofit-drilldown__body {
        max-height: 320px;
    }
}

/* Inside mobile filter panel */
.cocofit-filter-panel__section .cocofit-drilldown__viewport {
    min-height: auto;
}
.cocofit-filter-panel__section .cocofit-drilldown__header {
    padding: 8px 0;
    border-bottom: none;
}
.cocofit-filter-panel__section .cocofit-drilldown__region-grid {
    padding: 8px 0;
}
.cocofit-filter-panel__section .cocofit-drilldown__body {
    max-height: none;
    overflow-y: visible;
    padding: 0;
}
.cocofit-filter-panel__section .cocofit-drilldown__pref-group {
    padding: 0;
}
.cocofit-filter-panel__section .cocofit-drilldown__selected-tags {
    padding: 8px 0;
}