/**
 * Radio Post Grid / Carousel — Styles
 *
 * Three templates: standard, overlay, card
 * Two layouts:    grid, carousel
 *
 * @package Radio_Station_Theme
 */

/* ==========================================================================
   Wrapper
   ========================================================================== */

.rpg-wrapper {
    position: relative;
    width: 100%;
    margin: 0 0 30px;
}

/* ==========================================================================
   Grid Layout
   ========================================================================== */

.rpg-grid {
    display: grid;
    grid-template-columns: repeat(var(--rpg-columns, 3), 1fr);
    gap: 24px;
}

@media (max-width: 1024px) {
    .rpg-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .rpg-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Card — shared base
   ========================================================================== */

.rpg-card {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    background: #fff;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.rpg-card:hover {
    transform: translateY(-4px);
}

/* --- Sticky badge --- */

.rpg-sticky-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 10;
    background: var(--color-primary, #667eea);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 10px;
    border-radius: 3px;
    line-height: 1.5;
    pointer-events: none;
}

.rpg-tpl-overlay .rpg-sticky-badge {
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
}

/* --- Image --- */

.rpg-card-image {
    display: block;
    overflow: hidden;
    position: relative;
    height: var(--rpg-img-height, 260px);
}

.rpg-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.rpg-card:hover .rpg-card-image img {
    transform: scale(1.05);
}

/* --- Body (standard + card) --- */

.rpg-card-body {
    padding: 18px;
}

.rpg-card-title {
    margin: 0 0 8px;
    font-size: var(--rpg-title-size, 18px);
    line-height: var(--rpg-title-lh, 1.35);
    font-family: var(--font-heading, inherit);
    font-weight: var(--rpg-title-weight, var(--font-heading-weight, 700));
    text-transform: var(--rpg-title-transform, none);
}

.rpg-card-title a {
    color: var(--rpg-title-color, #1a1a1a);
    text-decoration: none;
    transition: color 0.2s;
}

.rpg-card-title a:hover {
    color: var(--color-primary, #667eea);
}

.rpg-card-excerpt {
    margin: 0 0 12px;
    font-size: var(--rpg-excerpt-size, 14px);
    line-height: 1.6;
    color: var(--rpg-excerpt-color, #555);
}

/* --- Meta --- */

.rpg-meta-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    font-size: var(--rpg-meta-size, 12px);
    color: var(--rpg-meta-color, #888);
    margin-top: 6px;
}

.rpg-meta-sep {
    color: #ccc;
}

.rpg-meta-cat {
    display: inline-block;
    font-size: var(--rpg-cat-size, 11px);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--rpg-cat-color, var(--color-primary, #667eea));
    margin-bottom: 6px;
}

/* --- Read more --- */

.rpg-read-more {
    display: inline-block;
    margin-top: 10px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary, #667eea);
    text-decoration: none;
    transition: color 0.2s;
}

.rpg-read-more:hover {
    color: var(--color-secondary, #764ba2);
}

/* ==========================================================================
   Template: Standard
   ========================================================================== */

.rpg-tpl-standard .rpg-card {
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.rpg-tpl-standard .rpg-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

/* ==========================================================================
   Template: Overlay — image background, title over gradient
   ========================================================================== */

.rpg-tpl-overlay .rpg-card {
    background: transparent;
}

.rpg-overlay-image {
    display: flex;
    align-items: flex-end;
    background-size: cover;
    background-position: center;
    text-decoration: none;
    color: #fff;
    height: var(--rpg-img-height, 260px);
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.4s ease;
}

.rpg-overlay-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: transform 0.4s ease;
    z-index: 0;
}

.rpg-card:hover .rpg-overlay-image::before {
    transform: scale(1.05);
}

.rpg-overlay-gradient {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80%;
    background: linear-gradient(to top, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.6) 40%, rgba(0,0,0,0.15) 70%, transparent 100%);
    z-index: 1;
    pointer-events: none;
}

.rpg-overlay-content {
    position: relative;
    z-index: 2;
    padding: 20px;
    width: 100%;
}

.rpg-overlay-content .rpg-card-title {
    color: var(--rpg-title-color, #fff);
    font-size: var(--rpg-title-size, 20px);
    margin: 4px 0 6px;
    text-shadow: 0 1px 3px rgba(0,0,0,0.4);
}

.rpg-overlay-content .rpg-meta-cat {
    color: var(--rpg-cat-color, #ffd700);
    background: rgba(0,0,0,0.3);
    padding: 2px 8px;
    border-radius: 3px;
    font-size: var(--rpg-cat-size, 10px);
}

.rpg-overlay-content .rpg-meta-row {
    color: var(--rpg-meta-color, rgba(255,255,255,0.8));
}

.rpg-overlay-content .rpg-meta-sep {
    color: rgba(255,255,255,0.4);
}

/* ==========================================================================
   Template: Card — elevated with shadow
   ========================================================================== */

.rpg-tpl-card .rpg-card {
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    border: 1px solid rgba(0,0,0,0.06);
}

.rpg-tpl-card .rpg-card:hover {
    box-shadow: 0 12px 32px rgba(0,0,0,0.16);
}

.rpg-tpl-card .rpg-card-body {
    padding: 22px;
}

/* ==========================================================================
   Carousel Layout
   ========================================================================== */

.rpg-layout-carousel {
    position: relative;
    padding: 0 40px;  /* room for arrows */
}

.rpg-carousel-viewport {
    overflow: hidden;
    width: 100%;
}

.rpg-carousel-track {
    display: flex;
    gap: 20px;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}

.rpg-carousel-track .rpg-card {
    flex: 0 0 calc((100% - (var(--rpg-per-view, 3) - 1) * 20px) / var(--rpg-per-view, 3));
    min-width: 0;
}

/* Arrows */

.rpg-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.3);
    background: rgba(0,0,0,0.5);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 5;
    transition: background 0.2s, border-color 0.2s;
    padding: 0;
}

.rpg-arrow:hover {
    background: var(--color-primary, #667eea);
    border-color: var(--color-primary, #667eea);
}

.rpg-arrow svg {
    width: 18px;
    height: 18px;
}

.rpg-arrow-prev {
    left: 0;
}

.rpg-arrow-next {
    right: 0;
}

/* Dots */

.rpg-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
}

.rpg-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: none;
    background: rgba(0,0,0,0.2);
    cursor: pointer;
    padding: 0;
    transition: background 0.2s, transform 0.2s;
}

.rpg-dot:hover {
    background: rgba(0,0,0,0.4);
}

.rpg-dot.active {
    background: var(--color-primary, #667eea);
    transform: scale(1.3);
}

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

.rpg-pagination {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 24px;
}

.rpg-page-btn,
.rpg-load-more-btn {
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, transform 0.15s;
    font-family: inherit;
}

.rpg-page-btn {
    min-width: 38px;
    height: 38px;
    padding: 0 10px;
    background: #f0f0f0;
    color: #333;
    font-size: 14px;
    font-weight: 500;
}

.rpg-page-btn:hover {
    background: #ddd;
}

.rpg-page-btn.active {
    background: var(--color-primary, #667eea);
    color: #fff;
    pointer-events: none;
}

.rpg-load-more-btn {
    padding: 12px 30px;
    background: var(--color-primary, #667eea);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
}

.rpg-load-more-btn:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

.rpg-load-more-btn.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* ==========================================================================
   No posts
   ========================================================================== */

.rpg-no-posts {
    text-align: center;
    color: #888;
    padding: 40px 0;
}

/* ==========================================================================
   Loading fade
   ========================================================================== */

.rpg-wrapper.rpg-loading .rpg-grid {
    opacity: 0.4;
    transition: opacity 0.2s;
    pointer-events: none;
}

/* ==========================================================================
   Mobile carousel responsive
   ========================================================================== */

@media (max-width: 1024px) {
    .rpg-carousel-track .rpg-card {
        flex: 0 0 calc((100% - 20px) / 2);
    }
    .rpg-layout-carousel {
        --rpg-per-view-tablet: 2;
    }
}

@media (max-width: 600px) {
    .rpg-carousel-track .rpg-card {
        flex: 0 0 100%;
    }
    .rpg-layout-carousel {
        padding: 0 32px;
    }
    .rpg-overlay-content .rpg-card-title {
        font-size: 17px;
    }
}