/* MobileSentrix Pro v2 — Filter Panel CSS */
:root {
    --msf-primary: #007bff;
    --msf-accent: #00EAFF;
    --msf-gradient: linear-gradient(90deg, #0099FF 0%, #00EAFF 100%);
    --msf-navy: #10213B;
    --msf-text: #10213B;
    --msf-text-muted: #5B6671;
    --msf-border: #D0D7DE;
    --msf-bg: #FFFFFF;
    --msf-bg-light: #F6F8FA;
    --msf-radius: 8px;
    --msf-radius-lg: 12px;
    --msf-shadow: 0 1px 3px rgba(0,0,0,.08);
    --msf-shadow-lg: 0 8px 30px rgba(0,0,0,.12);
    --msf-sticky-h: 0px;
}

/* ===== WRAPPER ===== */
.msf-wrapper { position: relative; }
.msf-main { position: relative; }
.msf-content-area { display: flex; gap: 0; }

/* ===== BACKDROP ===== */
.msf-backdrop {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 999;
    opacity: 0;
    transition: opacity .3s;
}
.msf-backdrop.is-open {
    display: block;
    opacity: 1;
}

/* ===== STICKY TOP BAR ===== */
.msf-sticky-bar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--msf-bg);
    border-bottom: 1px solid var(--msf-border);
    padding: 0 16px;
    max-width: 100%;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.msf-sticky-bar::-webkit-scrollbar { display: none; }

/* Chips bar */
.msf-chips-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    flex: 1;
    min-width: 0;
}
.msf-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    background: var(--msf-bg-light);
    border: 1px solid var(--msf-border);
    border-radius: 16px;
    font-size: 12px;
    white-space: nowrap;
}
.msf-chip-value { font-weight: 600; }
.msf-chip-remove {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0 2px;
    color: var(--msf-text-muted);
    display: flex;
    align-items: center;
}
.msf-chip-remove svg { width: 12px; height: 12px; }
.msf-chips-clear {
    background: none;
    border: 1px solid var(--msf-border);
    border-radius: 16px;
    padding: 3px 10px;
    font-size: 12px;
    cursor: pointer;
    color: var(--msf-text-muted);
}

/* Brand bar */
.msf-brand-bar,
.msf-types-bar,
.msf-color-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 0;
    overflow-x: auto;
    scrollbar-width: none;
    border-top: 1px solid #f0f0f0;
}
.msf-brand-bar::-webkit-scrollbar,
.msf-types-bar::-webkit-scrollbar,
.msf-color-bar::-webkit-scrollbar { display: none; }

.msf-bar-label {
    font-size: 12px;
    color: var(--msf-text-muted);
    font-weight: 600;
    flex-shrink: 0;
}

/* Chip images */
.msf-chip-img {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    object-fit: cover;
    flex-shrink: 0;
}
    white-space: nowrap;
}
.msf-bar-count {
    font-size: 11px;
    color: var(--msf-text-muted);
    font-weight: 400;
}
.msf-brand-trigger,
.msf-type-tag {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 4px 10px;
    border: 1px solid var(--msf-border);
    border-radius: 16px;
    background: var(--msf-bg);
    font-size: 12px;
    cursor: pointer;
    white-space: nowrap;
    transition: all .15s;
    color: var(--msf-text);
}
.msf-brand-trigger:hover,
.msf-type-tag:hover {
    border-color: var(--msf-primary);
    color: var(--msf-primary);
}
.msf-brand-trigger.is-active,
.msf-type-tag.is-active {
    background: var(--msf-primary);
    border-color: var(--msf-primary);
    color: #fff;
}

/* Color dots */
.msf-color-dot {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    border: 1px solid var(--msf-border);
    border-radius: 16px;
    background: var(--msf-bg);
    cursor: pointer;
    white-space: nowrap;
    transition: all .15s;
}
.msf-color-dot:hover,
.msf-color-dot.is-active {
    border-color: var(--msf-primary);
    box-shadow: 0 0 0 2px rgba(0,123,255,.2);
}
.msf-color-all .msf-color-swatch {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 1px solid rgba(0,0,0,.1);
    flex-shrink: 0;
}
.msf-color-swatch {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 1px solid rgba(0,0,0,.1);
    flex-shrink: 0;
}
.msf-color-name { font-size: 11px; color: var(--msf-text); }

/* Controls row */
.msf-controls-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    border-top: 1px solid #f0f0f0;
}

/* Toggle button */
.msf-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border: 1px solid var(--msf-border);
    border-radius: var(--msf-radius);
    background: var(--msf-bg);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all .15s;
    color: var(--msf-text);
    white-space: nowrap;
}
.msf-toggle-btn:hover { border-color: var(--msf-primary); color: var(--msf-primary); }
.msf-toggle-btn svg { flex-shrink: 0; }
.msf-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: 9px;
    background: var(--msf-primary);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    line-height: 1;
}
.msf-badge:empty { display: none; }

/* Result count */
.msf-result-count {
    font-size: 13px;
    color: var(--msf-text-muted);
    flex: 1;
    white-space: nowrap;
}

/* Sort */
.msf-sort-wrapper {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}
.msf-sort-wrapper label { font-size: 13px; color: var(--msf-text-muted); white-space: nowrap; }
.msf-sort-select {
    padding: 5px 28px 5px 10px;
    border: 1px solid var(--msf-border);
    border-radius: var(--msf-radius);
    background: var(--msf-bg) url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%235B6671' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 10px center;
    font-size: 13px;
    appearance: none;
    cursor: pointer;
    color: var(--msf-text);
}

/* ===== SIDEBAR PANEL ===== */
.msf-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 320px;
    max-width: 85vw;
    height: 100vh;
    background: var(--msf-bg);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transform: translateX(-100%);
    transition: transform .3s cubic-bezier(.4,0,.2,1);
    box-shadow: var(--msf-shadow-lg);
}
.msf-panel.is-open {
    transform: translateX(0);
}

.msf-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    border-bottom: 1px solid var(--msf-border);
    flex-shrink: 0;
}
.msf-panel-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--msf-text);
}
.msf-panel-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: var(--msf-text-muted);
    display: flex;
    align-items: center;
}

.msf-panel-body {
    flex: 1;
    overflow-y: auto;
    padding: 12px 16px;
}

/* Sections */
.msf-section {
    border-bottom: 1px solid #f0f0f0;
}
.msf-section-header {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 12px 0;
    background: none;
    border: none;
    cursor: pointer;
    gap: 8px;
    text-align: left;
}
.msf-section-label {
    flex: 1;
    font-size: 14px;
    font-weight: 600;
    color: var(--msf-text);
}
.msf-section-count {
    font-size: 12px;
    color: var(--msf-primary);
    font-weight: 600;
    min-width: 16px;
    text-align: center;
}
.msf-section-count:empty { display: none; }
.msf-section-count.has-active { display: inline; }
.msf-section-chevron {
    transition: transform .2s;
    flex-shrink: 0;
    color: var(--msf-text-muted);
}
.msf-section.is-open .msf-section-chevron {
    transform: rotate(180deg);
}

.msf-section-content {
    display: none;
    padding-bottom: 12px;
}
.msf-section.is-open .msf-section-content {
    display: block;
}

/* Search */
.msf-filter-search {
    margin-bottom: 8px;
}
.msf-filter-search input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--msf-border);
    border-radius: var(--msf-radius);
    font-size: 13px;
    outline: none;
    box-sizing: border-box;
}
.msf-filter-search input:focus { border-color: var(--msf-primary); }

/* Checkbox list */
.msf-checkbox-list {
    list-style: none;
    margin: 0;
    padding: 0;
    max-height: 240px;
    overflow-y: auto;
}
.msf-checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 0;
}
.msf-checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    cursor: pointer;
    font-size: 13px;
    color: var(--msf-text);
    min-width: 0;
}
.msf-checkbox.hidden { display: none !important; }
.msf-checkbox-mark {
    width: 16px;
    height: 16px;
    border: 2px solid var(--msf-border);
    border-radius: 4px;
    flex-shrink: 0;
    position: relative;
    transition: all .15s;
}
.msf-checkbox:checked + .msf-checkbox-mark {
    background: var(--msf-primary);
    border-color: var(--msf-primary);
}
.msf-checkbox:checked + .msf-checkbox-mark::after {
    content: '';
    position: absolute;
    left: 3px; top: 0;
    width: 6px; height: 9px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}
.msf-checkbox-item.is-active .msf-checkbox-mark {
    background: var(--msf-primary);
    border-color: var(--msf-primary);
}
.msf-checkbox-item.is-active .msf-checkbox-mark::after {
    content: '';
    position: absolute;
    left: 3px; top: 0;
    width: 6px; height: 9px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}
.msf-checkbox-count {
    font-size: 12px;
    color: var(--msf-text-muted);
    flex-shrink: 0;
}

/* Children list */
.msf-children-list {
    list-style: none;
    margin: 0;
    padding: 0 0 0 24px;
    display: none;
}
.msf-children-list.is-expanded { display: block; }
.msf-expand-children {
    background: none;
    border: none;
    cursor: pointer;
    padding: 2px;
    color: var(--msf-text-muted);
    display: flex;
    align-items: center;
    transition: transform .2s;
}
.msf-expand-children.is-expanded { transform: rotate(180deg); }

.msf-color-swatch-inline {
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 1px solid rgba(0,0,0,.1);
    flex-shrink: 0;
}

/* Price inputs */
.msf-price-inputs {
    display: flex;
    align-items: center;
    gap: 8px;
}
.msf-price-input {
    flex: 1;
}
.msf-price-input label {
    display: block;
    font-size: 12px;
    color: var(--msf-text-muted);
    margin-bottom: 4px;
}
.msf-price-input input {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--msf-border);
    border-radius: var(--msf-radius);
    font-size: 13px;
    box-sizing: border-box;
}
.msf-price-separator { color: var(--msf-text-muted); flex-shrink: 0; }

/* Panel footer */
.msf-panel-footer {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--msf-border);
    flex-shrink: 0;
}
.msf-btn-clear,
.msf-btn-apply {
    flex: 1;
    padding: 10px;
    border-radius: var(--msf-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-align: center;
    border: 1px solid var(--msf-border);
}
.msf-btn-clear {
    background: var(--msf-bg);
    color: var(--msf-text);
}
.msf-btn-apply {
    background: var(--msf-primary);
    color: #fff;
    border-color: var(--msf-primary);
}

/* ===== PRODUCT GRID ===== */
.msf-product-wrapper {
    flex: 1;
    min-width: 0;
    padding: 16px;
}
.msf-product-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

/* Product card */
.msf-product-card {
    border: 1px solid var(--msf-border);
    border-radius: var(--msf-radius-lg);
    overflow: hidden;
    background: var(--msf-bg);
    transition: box-shadow .2s;
    display: flex;
    flex-direction: column;
}
.msf-product-card:hover { box-shadow: var(--msf-shadow-lg); }
.msf-card-link {
    text-decoration: none;
    color: var(--msf-text);
    display: flex;
    flex-direction: column;
    flex: 1;
}
.msf-card-thumb {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    overflow: hidden;
}
.msf-card-thumb img { width: 100%; height: 100%; object-fit: contain; }
.msf-no-image { color: var(--msf-text-muted); font-size: 13px; }
.msf-card-title {
    font-size: 13px;
    font-weight: 500;
    margin: 10px 12px 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}
.msf-card-subtitle {
    font-size: 12px;
    color: var(--msf-text-muted);
    margin: 0 12px 4px;
}
.msf-card-price {
    font-size: 14px;
    font-weight: 600;
    color: var(--msf-primary);
    margin: auto 12px 10px;
}
.msf-card-actions {
    display: flex;
    gap: 8px;
    padding: 0 12px 12px;
    align-items: center;
}
.msf-add-to-cart-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--msf-border);
    border-radius: var(--msf-radius);
    background: var(--msf-bg);
    cursor: pointer;
    color: var(--msf-text);
    transition: all .15s;
    flex-shrink: 0;
}
.msf-add-to-cart-btn:hover {
    border-color: var(--msf-primary);
    color: var(--msf-primary);
}
.msf-add-to-cart-btn.loading {
    opacity: .6;
    pointer-events: none;
}
.msf-buy-now-link {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
    background: var(--msf-primary);
    color: #fff !important;
    border-radius: var(--msf-radius);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: background .15s;
}
.msf-buy-now-link:hover { background: #0069d9; }

/* Notify form */
.msf-notify-form,
.msf-preorder-form {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    width: 100%;
}
.msf-notify-form input[type="email"],
.msf-preorder-form input[type="email"] {
    flex: 1;
    min-width: 100px;
    padding: 6px 10px;
    border: 1px solid var(--msf-border);
    border-radius: var(--msf-radius);
    font-size: 12px;
}
.msf-notify-btn {
    padding: 6px 12px;
    background: var(--msf-navy);
    color: #fff !important;
    border: none;
    border-radius: var(--msf-radius);
    font-size: 12px;
    cursor: pointer;
}
.msf-preorder-btn {
    padding: 6px 12px;
    background: #e67e22;
    color: #fff !important;
    border: none;
    border-radius: var(--msf-radius);
    font-size: 12px;
    cursor: pointer;
}
.msf-notify-success {
    font-size: 12px;
    color: #27ae60;
    padding: 6px 0;
}

/* Spinner */
.msf-spinner {
    display: flex;
    justify-content: center;
    padding: 40px;
}
.msf-spinner::after {
    content: '';
    width: 32px;
    height: 32px;
    border: 3px solid var(--msf-border);
    border-top-color: var(--msf-primary);
    border-radius: 50%;
    animation: msf-spin .6s linear infinite;
}
@keyframes msf-spin { to { transform: rotate(360deg); } }
.msf-spinner.is-hidden { display: none; }

/* Show more */
.msf-show-more-wrap {
    display: flex;
    justify-content: center;
    padding: 20px 0;
}
.msf-show-more-wrap.is-hidden { display: none; }
.msf-show-more-btn {
    padding: 10px 32px;
    border: 1px solid var(--msf-border);
    border-radius: var(--msf-radius);
    background: var(--msf-bg);
    font-size: 14px;
    cursor: pointer;
    color: var(--msf-text);
}
.msf-show-more-btn:hover { border-color: var(--msf-primary); color: var(--msf-primary); }

/* No results */
.msf-no-results {
    text-align: center;
    color: var(--msf-text-muted);
    padding: 60px 20px;
    font-size: 15px;
}

/* Body lock */
body.msf-panel-open { overflow: hidden; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .msf-sticky-bar { padding: 0 10px; }
    .msf-controls-row { flex-wrap: wrap; }
    .msf-product-cards { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; }
    .msf-panel { width: 100%; max-width: 100%; }
    .msf-color-name { display: none; }
    .msf-bar-label { font-size: 11px; }
}