/* ============================================================
   Custom Product Filter — filter.css
   Place in: wp-content/plugins/custom-product-filter/assets/
   ============================================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&family=DM+Mono:wght@400;500&display=swap');

/* ---- CSS Variables ---- */
.cpf-wrap {
    --cpf-bg:          #f7f5f2;
    --cpf-white:       #ffffff;
    --cpf-border:      #e8e4de;
    --cpf-text:        #1a1a1a;
    --cpf-muted:       #888888;
    --cpf-accent:      #1a1a1a;
    --cpf-hover-bg:    #f0ede8;
    --cpf-radius:      7px;
    --cpf-font:        'DM Sans', sans-serif;
    --cpf-mono:        'DM Mono', monospace;
    --cpf-sidebar-w:   260px;
    --cpf-transition:  0.18s ease;

    display: flex;
    gap: 0;
    align-items: flex-start;
    font-family: var(--cpf-font);
    background: transparent;
    width: 100%;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.cpf-sidebar {
    width: var(--cpf-sidebar-w);
    min-width: var(--cpf-sidebar-w);
    background: var(--cpf-white);
    border: 1.5px solid var(--cpf-border);
    border-radius: var(--cpf-radius);
    overflow: hidden;
    position: sticky;
    top: 90px;    /* adjust to your header height */
    max-height: calc(100vh - 110px);
    overflow-y: auto;
}

.cpf-sidebar::-webkit-scrollbar { width: 3px; }
.cpf-sidebar::-webkit-scrollbar-thumb { background: var(--cpf-border); border-radius: 3px; }

/* Header */
.cpf-filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1.5px solid var(--cpf-border);
}

.cpf-filter-title {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--cpf-text);
}

.cpf-clear-all {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--cpf-muted);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: color var(--cpf-transition);
    font-family: var(--cpf-font);
}

.cpf-clear-all:hover { color: #c0392b; }

/* Sections */
.cpf-section {
    border-bottom: 1.5px solid var(--cpf-border);
}

.cpf-section:last-child { border-bottom: none; }

.cpf-section-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 13px 20px;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.13em;
    color: var(--cpf-muted);
    cursor: pointer;
    user-select: none;
    transition: background var(--cpf-transition);
}

.cpf-section-head:hover { background: var(--cpf-hover-bg); }

.cpf-arrow {
    font-size: 10px;
    color: #bbb;
    transition: transform var(--cpf-transition);
    display: inline-block;
}

.cpf-section-head.is-collapsed .cpf-arrow { transform: rotate(-90deg); }

.cpf-section-body {
    padding: 6px 14px 12px;
    overflow: hidden;
    transition: all var(--cpf-transition);
}

.cpf-section-body.is-collapsed { display: none; }

/* ---- Price Slider ---- */
.cpf-price-wrap { padding: 6px 4px 2px; }

.cpf-slider-track {
    position: relative;
    height: 3px;
    background: var(--cpf-border);
    border-radius: 3px;
    margin: 12px 6px 20px;
}

.cpf-slider-fill {
    position: absolute;
    height: 100%;
    background: var(--cpf-accent);
    border-radius: 3px;
    pointer-events: none;
}

.cpf-thumb {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--cpf-white);
    border: 2px solid var(--cpf-accent);
    border-radius: 50%;
    top: -6.5px;
    transform: translateX(-50%);
    cursor: grab;
    z-index: 2;
    transition: box-shadow var(--cpf-transition);
    touch-action: none;
}

.cpf-thumb:hover,
.cpf-thumb.is-dragging {
    box-shadow: 0 0 0 4px rgba(26,26,26,0.12);
    cursor: grabbing;
}

.cpf-price-display {
    font-family: var(--cpf-mono);
    font-size: 12px;
    color: #555;
    text-align: center;
    letter-spacing: 0.04em;
    margin-top: 4px;
}

/* ---- Radio List (Categories) ---- */
.cpf-radio-list,
.cpf-check-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cpf-radio-item,
.cpf-check-item {
    margin-bottom: 1px;
}

.cpf-radio-item input[type="radio"],
.cpf-check-item input[type="checkbox"] {
    display: none;
}

.cpf-radio-item label,
.cpf-check-item label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: #444;
    cursor: pointer;
    padding: 5px 6px;
    border-radius: 5px;
    transition: background var(--cpf-transition);
    line-height: 1.4;
}

.cpf-radio-item label:hover,
.cpf-check-item label:hover { background: var(--cpf-hover-bg); }

/* Radio circle */
.cpf-radio-circle {
    width: 15px;
    height: 15px;
    min-width: 15px;
    border: 1.5px solid #ccc;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color var(--cpf-transition);
}

.cpf-radio-dot {
    width: 7px;
    height: 7px;
    background: var(--cpf-accent);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--cpf-transition);
}

.cpf-radio-item input[type="radio"]:checked + label { font-weight: 500; color: var(--cpf-text); }
.cpf-radio-item input[type="radio"]:checked + label .cpf-radio-circle { border-color: var(--cpf-accent); }
.cpf-radio-item input[type="radio"]:checked + label .cpf-radio-dot { opacity: 1; }

/* Checkbox */
.cpf-checkbox-box {
    width: 15px;
    height: 15px;
    min-width: 15px;
    border: 1.5px solid #ccc;
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--cpf-transition);
}

.cpf-checkbox-box svg { display: none; }

.cpf-check-item input[type="checkbox"]:checked + label { font-weight: 500; color: var(--cpf-text); }
.cpf-check-item input[type="checkbox"]:checked + label .cpf-checkbox-box {
    background: var(--cpf-accent);
    border-color: var(--cpf-accent);
}
.cpf-check-item input[type="checkbox"]:checked + label .cpf-checkbox-box svg { display: block; }

/* Category count */
.cpf-count {
    font-size: 10px;
    color: #bbb;
    font-family: var(--cpf-mono);
    margin-left: auto;
}

/* ============================================================
   PRODUCT AREA
   ============================================================ */
.cpf-products-area {
    flex: 1;
    min-width: 0;
    padding-left: 24px;
}

.cpf-products-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1.5px solid var(--cpf-border);
}

.cpf-result-count {
    font-size: 12px;
    color: var(--cpf-muted);
    font-family: var(--cpf-mono);
}

.cpf-sort {
    font-family: var(--cpf-font);
    font-size: 12px;
    color: var(--cpf-text);
    border: 1.5px solid var(--cpf-border);
    border-radius: 5px;
    padding: 6px 10px;
    background: var(--cpf-white);
    cursor: pointer;
    outline: none;
    transition: border-color var(--cpf-transition);
}

.cpf-sort:focus { border-color: var(--cpf-accent); }

/* Grid */
.cpf-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(3, 1fr);
}

.cpf-grid[data-columns="2"] { grid-template-columns: repeat(2, 1fr); }
.cpf-grid[data-columns="4"] { grid-template-columns: repeat(4, 1fr); }

/* ---- Product Card ---- */
.cpf-product-card {
    background: var(--cpf-white);
    border: 1.5px solid var(--cpf-border);
    border-radius: var(--cpf-radius);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cpf-product-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(0,0,0,0.08);
}

.cpf-card-img-wrap {
    position: relative;
    display: block;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: var(--cpf-bg);
}

.cpf-card-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease;
    display: block;
}

.cpf-product-card:hover .cpf-card-img-wrap img {
    transform: scale(1.04);
}

/* Badges */
.cpf-badge {
    position: absolute;
    top: 10px;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 3px;
    z-index: 1;
}

.cpf-badge-sale     { left: 10px; background: #fdecea; color: #c0392b; }
.cpf-badge-featured { right: 10px; background: #fef9e7; color: #b7950b; }

.cpf-card-body { padding: 13px; }

.cpf-card-cat {
    font-size: 10px;
    color: #aaa;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 5px;
}

.cpf-card-cat a { color: inherit; text-decoration: none !important; }
.cpf-card-cat a:hover { color: var(--cpf-text); }

.cpf-card-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--cpf-text);
    margin: 0 0 6px;
    line-height: 1.4;
}

.cpf-card-title a { color: inherit; text-decoration: none !important; }
.cpf-card-title a:hover { text-decoration: underline; }

.cpf-card-price {
    font-family: var(--cpf-mono);
    font-size: 13px;
    font-weight: 500;
    color: var(--cpf-text);
    margin-bottom: 10px;
}

.cpf-card-price del { color: #bbb; font-size: 11px; margin-right: 4px; }
.cpf-card-price ins { text-decoration: none; color: #c0392b; }

.cpf-add-to-cart {
    display: block;
    width: 100%;
    padding: 8px 12px;
    background: var(--cpf-text);
    color: #fff;
    font-family: var(--cpf-font);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-align: center;
    text-decoration: none !important;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    transition: background var(--cpf-transition), transform 0.1s;
}

.cpf-add-to-cart:hover { background: #333; transform: translateY(-1px); }

/* ---- Loading Spinner ---- */
.cpf-loading {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 60px 20px;
    color: var(--cpf-muted);
    font-size: 13px;
}

.cpf-spinner {
    width: 28px;
    height: 28px;
    border: 2.5px solid var(--cpf-border);
    border-top-color: var(--cpf-accent);
    border-radius: 50%;
    animation: cpf-spin 0.7s linear infinite;
}

@keyframes cpf-spin { to { transform: rotate(360deg); } }

/* ---- No Results ---- */
.cpf-no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--cpf-muted);
}

.cpf-no-results span { font-size: 36px; display: block; margin-bottom: 12px; }
.cpf-no-results p    { font-size: 14px; margin-bottom: 16px; }

.cpf-reset-btn {
    font-family: var(--cpf-font);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 9px 20px;
    background: var(--cpf-accent);
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background var(--cpf-transition);
}

.cpf-reset-btn:hover { background: #333; }

/* ---- Load More ---- */
.cpf-load-more-wrap {
    margin-top: 28px;
    text-align: center;
}

.cpf-load-more {
    font-family: var(--cpf-font);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 12px 32px;
    background: var(--cpf-white);
    color: var(--cpf-text);
    border: 2px solid var(--cpf-accent);
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--cpf-transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.cpf-load-more:hover {
    background: var(--cpf-accent);
    color: #fff;
}

.cpf-load-more.is-loading {
    opacity: 0.6;
    pointer-events: none;
}

.cpf-load-more-count {
    font-size: 10px;
    background: var(--cpf-border);
    color: var(--cpf-muted);
    padding: 2px 7px;
    border-radius: 10px;
    font-family: var(--cpf-mono);
    transition: background var(--cpf-transition), color var(--cpf-transition);
}

.cpf-load-more:hover .cpf-load-more-count {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .cpf-grid { grid-template-columns: repeat(2, 1fr) !important; }
}

@media (max-width: 768px) {
    .cpf-wrap {
        flex-direction: column;
    }

    .cpf-sidebar {
        width: 100%;
        min-width: 100%;
        position: static;
        max-height: none;
        border-radius: var(--cpf-radius);
    }

    .cpf-products-area {
        padding-left: 0;
        padding-top: 20px;
    }

    .cpf-grid { grid-template-columns: repeat(2, 1fr) !important; }
}

@media (max-width: 480px) {
    .cpf-grid { grid-template-columns: 1fr !important; }
}