/* ==========================================================================
   DTB Filter Pro – Frontend Styles
   Matches design: teal heading, 4-column dropdown row, full-width dark search btn
   ========================================================================== */

:root {
    --dtb-primary:      #2ec4b6;
    --dtb-primary-dark: #249e93;
    --dtb-btn-bg:       #1d1d1d;
    --dtb-btn-hover:    #333;
    --dtb-border:       #d8dde4;
    --dtb-border-focus: #2ec4b6;
    --dtb-bg:           #fff;
    --dtb-bg-disabled:  #f3f5f7;
    --dtb-text:         #1a1a2e;
    --dtb-text-muted:   #6b7280;
    --dtb-label:        #6b7280;
    --dtb-radius:       4px;
    --dtb-shadow:       0 2px 12px rgba(0,0,0,.08);
    --dtb-transition:   .2s ease;
}

/* Wrapper */
.dtb-fp-wrapper {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 16px;
    color: var(--dtb-text);
}

/* Header */
.dtb-fp-header {
    text-align: center;
    margin-bottom: 28px;
}
.dtb-fp-header__title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    color: var(--dtb-primary);
    margin: 0 0 8px;
    letter-spacing: -.3px;
}
.dtb-fp-header__subtitle {
    font-size: .95rem;
    color: var(--dtb-text-muted);
    margin: 0;
}

/* Filter Box */
.dtb-fp-filter-box {
    border: 1px solid var(--dtb-border);
    border-radius: var(--dtb-radius);
    padding: 24px;
    background: var(--dtb-bg);
    box-shadow: var(--dtb-shadow);
}

.dtb-fp-filter-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--dtb-border);
    border: 1px solid var(--dtb-border);
    border-radius: var(--dtb-radius);
    overflow: hidden;
    margin-bottom: 1px;
}

/* Each field cell */
.dtb-fp-field {
    background: var(--dtb-bg);
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: relative;
}
.dtb-fp-field:last-child {
    background: var(--dtb-bg-disabled);
}

.dtb-fp-field__label {
    font-size: .72rem;
    font-weight: 500;
    color: var(--dtb-label);
    letter-spacing: .04em;
    text-transform: uppercase;
    pointer-events: none;
}

/* Native select override */
.dtb-fp-select {
    appearance: none;
    -webkit-appearance: none;
    border: none;
    background: transparent;
    font-size: 1rem;
    font-weight: 500;
    color: var(--dtb-text);
    padding: 0;
    cursor: pointer;
    outline: none;
    width: 100%;
}
.dtb-fp-select:disabled {
    color: var(--dtb-text-muted);
    cursor: not-allowed;
}

/* Custom chevron via background */
.dtb-fp-field::after {
    content: '';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 6px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%236b7280' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat center/contain;
    pointer-events: none;
}

/* Actions row (Search + Reset) */
.dtb-fp-filter-actions {
    display: flex;
    gap: 0;
    margin-top: 1px;
}

.dtb-fp-btn {
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-weight: 700;
    letter-spacing: .1em;
    transition: background var(--dtb-transition), transform var(--dtb-transition);
}
.dtb-fp-btn:focus-visible {
    outline: 2px solid var(--dtb-primary);
    outline-offset: 2px;
}

.dtb-fp-btn--search {
    flex: 1;
    background: var(--dtb-btn-bg);
    color: #fff;
    padding: 18px 32px;
    font-size: .9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border-radius: 0;
}
.dtb-fp-btn--search:hover {
    background: var(--dtb-btn-hover);
}
.dtb-fp-btn--search:active {
    transform: scaleY(.97);
}

.dtb-fp-btn--reset {
    background: #e5e7eb;
    color: var(--dtb-text-muted);
    padding: 18px 20px;
    font-size: 1rem;
}
.dtb-fp-btn--reset:hover {
    background: #d1d5db;
    color: var(--dtb-text);
}

/* Spinner */
.dtb-fp-btn__spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: dtb-spin .7s linear infinite;
}
@keyframes dtb-spin {
    to { transform: rotate(360deg); }
}

/* Select2 overrides to match design */
.select2-container--default .select2-selection--single {
    border: none;
    background: transparent;
    height: auto;
    padding: 0;
}
.select2-container--default .select2-selection--single .select2-selection__rendered {
    font-size: 1rem;
    font-weight: 500;
    color: var(--dtb-text);
    padding: 0;
    line-height: 1.4;
}
.select2-container--default .select2-selection--single .select2-selection__arrow {
    display: none;
}
.select2-dropdown {
    border-color: var(--dtb-border);
    border-radius: var(--dtb-radius);
    box-shadow: var(--dtb-shadow);
}
.select2-results__option--highlighted {
    background-color: var(--dtb-primary) !important;
}

/* ==========================================================================
   Results
   ========================================================================== */

.dtb-fp-results {
    margin-top: 32px;
}

/* Grid layout */
.dtb-fp-results__grid.dtb-fp-layout--grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}
.dtb-fp-results__grid.dtb-fp-layout--list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.dtb-fp-results__grid.dtb-fp-layout--card {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 28px;
}

/* Card */
.dtb-fp-card {
    border: 1px solid var(--dtb-border);
    border-radius: calc(var(--dtb-radius) * 2);
    background: var(--dtb-bg);
    overflow: hidden;
    transition: box-shadow var(--dtb-transition), transform var(--dtb-transition);
}
.dtb-fp-card:hover {
    box-shadow: 0 8px 32px rgba(0,0,0,.12);
    transform: translateY(-2px);
}
.dtb-fp-card--list {
    display: flex;
    flex-direction: row;
}
.dtb-fp-card--list .dtb-fp-card__thumb {
    width: 180px;
    flex-shrink: 0;
}
.dtb-fp-card__thumb img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}
.dtb-fp-card--list .dtb-fp-card__thumb img {
    height: 100%;
}
.dtb-fp-card__no-img {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #e8f5f4 0%, #c8eeeb 100%);
}
.dtb-fp-card__body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.dtb-fp-card__title {
    font-size: 1.05rem;
    font-weight: 700;
    margin: 0;
    line-height: 1.3;
}
.dtb-fp-card__title a {
    color: var(--dtb-text);
    text-decoration: none;
}
.dtb-fp-card__title a:hover {
    color: var(--dtb-primary);
}
.dtb-fp-card__excerpt {
    font-size: .875rem;
    color: var(--dtb-text-muted);
    margin: 0;
    line-height: 1.6;
    flex: 1;
}
.dtb-fp-card__price {
    font-size: 1rem;
    font-weight: 700;
    color: var(--dtb-primary);
}
.dtb-fp-card__btn {
    display: inline-block;
    background: var(--dtb-btn-bg);
    color: #fff;
    text-decoration: none;
    padding: 9px 20px;
    border-radius: var(--dtb-radius);
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    transition: background var(--dtb-transition);
    align-self: flex-start;
}
.dtb-fp-card__btn:hover {
    background: var(--dtb-primary);
    color: #fff;
}

/* No results */
.dtb-fp-no-results {
    text-align: center;
    padding: 56px 24px;
    color: var(--dtb-text-muted);
}
.dtb-fp-no-results svg {
    stroke: var(--dtb-border);
    margin-bottom: 16px;
    opacity: .6;
}
.dtb-fp-no-results p {
    font-size: .95rem;
    margin: 0;
}

/* Error */
.dtb-fp-error {
    text-align: center;
    padding: 32px;
    color: #dc2626;
    font-size: .9rem;
}

/* ==========================================================================
   Skeleton loaders
   ========================================================================== */

.dtb-fp-skeleton-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}
.dtb-fp-skeleton {
    border: 1px solid var(--dtb-border);
    border-radius: calc(var(--dtb-radius) * 2);
    overflow: hidden;
}
.dtb-fp-skeleton__img {
    height: 200px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e8e8e8 50%, #f0f0f0 75%);
    background-size: 400% 100%;
    animation: dtb-shimmer 1.4s infinite;
}
.dtb-fp-skeleton__line {
    height: 14px;
    margin: 14px 16px 0;
    background: linear-gradient(90deg, #f0f0f0 25%, #e8e8e8 50%, #f0f0f0 75%);
    background-size: 400% 100%;
    animation: dtb-shimmer 1.4s infinite;
    border-radius: 4px;
}
.dtb-fp-skeleton__line--title { height: 20px; }
.dtb-fp-skeleton__line--short { width: 50%; margin-bottom: 16px; }
@keyframes dtb-shimmer {
    0%   { background-position: 100% 0; }
    100% { background-position: -100% 0; }
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.dtb-fp-pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 32px;
    flex-wrap: wrap;
}
.dtb-fp-page-btn {
    width: 38px;
    height: 38px;
    border: 1px solid var(--dtb-border);
    background: var(--dtb-bg);
    border-radius: var(--dtb-radius);
    cursor: pointer;
    font-size: .85rem;
    font-weight: 600;
    color: var(--dtb-text);
    transition: all var(--dtb-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: inherit;
}
.dtb-fp-page-btn:hover,
.dtb-fp-page-btn.active {
    background: var(--dtb-primary);
    border-color: var(--dtb-primary);
    color: #fff;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 900px) {
    .dtb-fp-filter-row {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 600px) {
    .dtb-fp-filter-row {
        grid-template-columns: 1fr;
    }
    .dtb-fp-card--list {
        flex-direction: column;
    }
    .dtb-fp-card--list .dtb-fp-card__thumb {
        width: 100%;
    }
}

/* RTL support */
[dir="rtl"] .dtb-fp-field::after {
    right: auto;
    left: 16px;
}