/**
 * GP Related Posts - Frontend Styles
 * Version: 2.0.0
 */

/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
    --gprp-primary: #1e73be;
    --gprp-primary-rgb: 30, 115, 190;
    --gprp-text: #1d2327;
    --gprp-text-light: #50575e;
    --gprp-border: #dcdcde;
    --gprp-bg: #f8f9fa;
    --gprp-white: #ffffff;
    --gprp-radius: 8px;
    --gprp-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --gprp-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
    --gprp-theme-gradient: linear-gradient(135deg, var(--gprp-primary) 0%, #155a8a 100%);
    --gprp-container-width: 100%;
    --gprp-title-color: #1d2327;
    --gprp-meta-color: #50575e;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */
.gprp-related-posts {
    margin: 2rem 0;
    font-family: inherit;
    max-width: var(--gprp-container-width);
}

.gprp-title {
    font-size: 1.4em;
    font-weight: 600;
    margin-bottom: 1.25em;
    padding-bottom: 0.5em;
    border-bottom: 3px solid var(--gprp-primary);
    color: var(--gprp-title-color) !important;
}

.gprp-post-title,
.gprp-card-title {
    font-size: 1.05em;
    font-weight: 600;
    margin: 0.5em 0;
    line-height: 1.4;
    color: var(--gprp-text) !important;
}

.gprp-post-title a,
.gprp-card-title a {
    color: var(--gprp-text) !important;
    text-decoration: none;
    transition: color 0.2s ease;
}

.gprp-post-title a:hover,
.gprp-card-title a:hover {
    color: var(--gprp-primary) !important;
}

.gprp-meta {
    font-size: 0.9em;
    color: var(--gprp-meta-color) !important;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75em;
}

.gprp-meta span,
.gprp-meta time {
    color: var(--gprp-meta-color) !important;
}

.gprp-date {
    color: var(--gprp-meta-color) !important;
}

.gprp-excerpt,
.gprp-card-excerpt {
    font-size: 0.9em;
    color: var(--gprp-meta-color);
    margin-top: 0.5em;
    line-height: 1.6;
}

.gprp-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5em;
    margin-bottom: 0.5em;
}

.gprp-category {
    display: inline-block;
    font-size: 0.7em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.25em 0.75em;
    background: var(--gprp-primary);
    color: #fff;
    border-radius: 3px;
    text-decoration: none;
    transition: background 0.2s ease;
}

.gprp-category:hover {
    background: var(--gprp-text);
    color: #fff;
}

/* ==========================================================================
   Icon Placeholders
   ========================================================================== */
.gprp-icon-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    min-height: 140px;
    position: relative;
    overflow: hidden;
    background: var(--gprp-theme-gradient);
}

.gprp-icon-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.08;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.gprp-icon-placeholder .gprp-icon {
    color: white;
    opacity: 0.95;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
    position: relative;
    z-index: 1;
}

.gprp-icon-circle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.gprp-icon-circle .gprp-icon {
    color: white;
}

/* ==========================================================================
   Grid Layout
   ========================================================================== */
.gprp-layout-grid .gprp-grid {
    display: grid;
    gap: 1.5rem;
}

.gprp-layout-grid.gprp-columns-2 .gprp-grid { grid-template-columns: repeat(2, 1fr); }
.gprp-layout-grid.gprp-columns-3 .gprp-grid { grid-template-columns: repeat(3, 1fr); }
.gprp-layout-grid.gprp-columns-4 .gprp-grid { grid-template-columns: repeat(4, 1fr); }

.gprp-layout-grid .gprp-item {
    display: flex;
    flex-direction: column;
}

.gprp-layout-grid .gprp-thumbnail {
    border-radius: var(--gprp-radius);
    overflow: hidden;
    aspect-ratio: 16 / 10;
}

.gprp-layout-grid .gprp-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.gprp-layout-grid .gprp-thumbnail a:hover img,
.gprp-layout-grid .gprp-thumbnail a:hover .gprp-icon-placeholder {
    transform: scale(1.03);
}

.gprp-layout-grid .gprp-icon-placeholder {
    min-height: 100%;
    transition: transform 0.3s ease;
}

.gprp-layout-grid .gprp-content {
    padding: 0.75rem 0;
    flex: 1;
}

/* ==========================================================================
   Cards Layout
   ========================================================================== */
.gprp-layout-cards .gprp-cards {
    display: grid;
    gap: 1.5rem;
}

.gprp-layout-cards.gprp-columns-2 .gprp-cards { grid-template-columns: repeat(2, 1fr); }
.gprp-layout-cards.gprp-columns-3 .gprp-cards { grid-template-columns: repeat(3, 1fr); }
.gprp-layout-cards.gprp-columns-4 .gprp-cards { grid-template-columns: repeat(4, 1fr); }

.gprp-layout-cards .gprp-card {
    display: flex;
    flex-direction: column;
    background: var(--gprp-white);
    border-radius: calc(var(--gprp-radius) + 4px);
    overflow: hidden;
    box-shadow: var(--gprp-shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.gprp-layout-cards .gprp-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--gprp-shadow-hover);
}

.gprp-layout-cards .gprp-card-thumbnail {
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.gprp-layout-cards .gprp-card-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gprp-layout-cards .gprp-icon-placeholder {
    min-height: 100%;
}

.gprp-layout-cards .gprp-card-body {
    padding: 1.25rem;
    flex: 1;
}

.gprp-layout-cards .gprp-card-footer {
    padding: 0.75rem 1.25rem;
    background: var(--gprp-bg);
    border-top: 1px solid var(--gprp-border);
}

/* ==========================================================================
   List with Icons Layout
   ========================================================================== */
.gprp-layout-list-icons .gprp-list-icons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.gprp-layout-list-icons .gprp-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1rem;
    background: var(--gprp-bg);
    border-radius: var(--gprp-radius);
    transition: background 0.2s ease;
}

.gprp-layout-list-icons .gprp-item:hover {
    background: #eee;
}

.gprp-layout-list-icons .gprp-thumbnail {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: var(--gprp-radius);
    overflow: hidden;
}

.gprp-layout-list-icons .gprp-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gprp-layout-list-icons .gprp-icon-placeholder {
    min-height: 100%;
}

.gprp-layout-list-icons .gprp-icon-placeholder .gprp-icon {
    width: 32px;
    height: 32px;
}

.gprp-layout-list-icons .gprp-content {
    flex: 1;
    min-width: 0;
}

.gprp-layout-list-icons .gprp-post-title {
    margin-top: 0;
}

/* ==========================================================================
   Minimal with Icons Layout
   ========================================================================== */
.gprp-layout-minimal-icons .gprp-minimal-icons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.gprp-layout-minimal-icons .gprp-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--gprp-white);
    border: 1px solid var(--gprp-border);
    border-radius: var(--gprp-radius);
    transition: all 0.2s ease;
}

.gprp-layout-minimal-icons .gprp-item:hover {
    border-color: var(--gprp-primary);
    box-shadow: 0 2px 8px rgba(var(--gprp-primary-rgb), 0.15);
}

.gprp-layout-minimal-icons .gprp-minimal-link {
    flex: 1;
    font-weight: 500;
    color: var(--gprp-text);
    text-decoration: none;
    transition: color 0.2s ease;
}

.gprp-layout-minimal-icons .gprp-minimal-link:hover {
    color: var(--gprp-primary);
}

.gprp-layout-minimal-icons .gprp-meta-date {
    font-size: 0.8em;
    color: var(--gprp-text-light);
    flex-shrink: 0;
}

/* ==========================================================================
   Simple List Layout
   ========================================================================== */
.gprp-layout-list .gprp-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.gprp-layout-list .gprp-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gprp-border);
}

.gprp-layout-list .gprp-item:last-child {
    border-bottom: none;
}

.gprp-layout-list .gprp-item a {
    font-weight: 500;
    color: var(--gprp-text);
    text-decoration: none;
    flex: 1;
    transition: color 0.2s ease;
}

.gprp-layout-list .gprp-item a:hover {
    color: var(--gprp-primary);
}

.gprp-layout-list .gprp-date {
    font-size: 0.85em;
    color: var(--gprp-text-light);
    margin-left: 1rem;
    flex-shrink: 0;
}

/* ==========================================================================
   Table Layout
   ========================================================================== */
.gprp-layout-table .gprp-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95em;
}

.gprp-layout-table .gprp-table th,
.gprp-layout-table .gprp-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--gprp-border);
}

.gprp-layout-table .gprp-table th {
    background: var(--gprp-bg);
    font-weight: 600;
    font-size: 0.85em;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gprp-text-light);
}

.gprp-layout-table .gprp-table tbody tr:hover td {
    background: var(--gprp-bg);
}

.gprp-layout-table .gprp-td-icon {
    width: 50px;
}

.gprp-layout-table .gprp-td-icon .gprp-icon-placeholder {
    width: 40px;
    height: 40px;
    min-height: 40px;
    border-radius: 6px;
}

.gprp-layout-table .gprp-td-title a {
    font-weight: 500;
    color: var(--gprp-text);
    text-decoration: none;
    transition: color 0.2s ease;
}

.gprp-layout-table .gprp-td-title a:hover {
    color: var(--gprp-primary);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
    .gprp-layout-grid.gprp-columns-4 .gprp-grid,
    .gprp-layout-cards.gprp-columns-4 .gprp-cards {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .gprp-layout-grid.gprp-columns-3 .gprp-grid,
    .gprp-layout-grid.gprp-columns-4 .gprp-grid,
    .gprp-layout-cards.gprp-columns-3 .gprp-cards,
    .gprp-layout-cards.gprp-columns-4 .gprp-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .gprp-layout-table .gprp-th-category,
    .gprp-layout-table .gprp-td-category {
        display: none;
    }
}

@media (max-width: 480px) {
    .gprp-layout-grid .gprp-grid,
    .gprp-layout-cards .gprp-cards {
        grid-template-columns: 1fr;
    }

    .gprp-layout-list-icons .gprp-item {
        flex-direction: column;
        text-align: center;
    }

    .gprp-layout-list-icons .gprp-thumbnail {
        width: 100%;
        height: 120px;
    }
}

/* ==========================================================================
   Dark Mode
   ========================================================================== */
@media (prefers-color-scheme: dark) {
    :root {
        --gprp-text: #e4e6eb;
        --gprp-text-light: #b0b3b8;
        --gprp-border: #3e4042;
        --gprp-bg: #242526;
        --gprp-white: #18191a;
    }
}

/* GeneratePress Integration */
@supports (color: var(--contrast)) {
    :root {
        --gprp-primary: var(--contrast, #1e73be);
    }
}