/**
 * DRTPC Courses Catalog — Modern Styles
 *
 * @package DRTPC_Experts_Directory
 */

/* ============================================================
   CSS Custom Properties (reuse from directory.css where possible)
   ============================================================ */
:root {
    --drtpc-course-primary: #1a73e8;
    --drtpc-course-primary-dark: #1557b0;
    --drtpc-course-primary-light: #e8f0fe;
    --drtpc-course-accent: #ff6d00;
    --drtpc-course-bg: #f8f9fa;
    --drtpc-course-card-bg: #ffffff;
    --drtpc-course-text: #202124;
    --drtpc-course-text-secondary: #5f6368;
    --drtpc-course-border: #e0e0e0;
    --drtpc-course-radius: 12px;
    --drtpc-course-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
    --drtpc-course-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.05);
    --drtpc-course-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   Course Catalog Wrapper
   ============================================================ */
.drtpc-courses-wrapper {
    max-width: 100%;
    margin: 0 auto;
    padding: 24px 16px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
}

/* ============================================================
   Search & Filters
   ============================================================ */
.drtpc-courses-filters {
    margin-bottom: 32px;
}

.drtpc-courses-filters .drtpc-search-bar {
    display: flex;
    align-items: center;
    background: var(--drtpc-course-card-bg);
    border: 2px solid var(--drtpc-course-border);
    border-radius: var(--drtpc-course-radius);
    overflow: hidden;
    transition: var(--drtpc-course-transition);
    margin-bottom: 16px;
}

.drtpc-courses-filters .drtpc-search-bar:focus-within {
    border-color: var(--drtpc-course-primary);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.15);
}

.drtpc-courses-filters .drtpc-search-input {
    flex: 1;
    border: none;
    padding: 14px 18px;
    font-size: 15px;
    outline: none;
    background: transparent;
    color: var(--drtpc-course-text);
}

.drtpc-courses-filters .drtpc-search-input::placeholder {
    color: var(--drtpc-course-text-secondary);
}

.drtpc-courses-filters .drtpc-search-btn {
    background: var(--drtpc-course-primary);
    color: #fff;
    border: none;
    padding: 14px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.drtpc-courses-filters .drtpc-search-btn:hover {
    background: var(--drtpc-course-primary-dark);
}

.drtpc-courses-filters .drtpc-filter-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.drtpc-courses-filters .drtpc-filter-group {
    flex: 1;
    min-width: 180px;
}

.drtpc-courses-filters .drtpc-filter-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--drtpc-course-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.drtpc-courses-filters .drtpc-filter-select {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--drtpc-course-border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--drtpc-course-text);
    background: var(--drtpc-course-card-bg);
    cursor: pointer;
    transition: var(--drtpc-course-transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235f6368' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.drtpc-courses-filters .drtpc-filter-select:focus {
    border-color: var(--drtpc-course-primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.15);
}

.drtpc-courses-filters .drtpc-filter-select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================================
   Results Info
   ============================================================ */
.drtpc-courses-results-info {
    margin-bottom: 20px;
    padding: 0 4px;
}

.drtpc-courses-results-info .drtpc-results-count {
    font-size: 14px;
    color: var(--drtpc-course-text-secondary);
    font-weight: 500;
}

/* ============================================================
   Course Grid
   ============================================================ */
.drtpc-courses-grid {
    display: grid;
    gap: 24px;
}

.drtpc-courses-grid.drtpc-columns-2 {
    grid-template-columns: repeat(2, 1fr);
}

.drtpc-courses-grid.drtpc-columns-3 {
    grid-template-columns: repeat(3, 1fr);
}

.drtpc-courses-grid.drtpc-columns-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .drtpc-courses-grid.drtpc-columns-4 {
        grid-template-columns: repeat(3, 1fr);
    }

    .drtpc-courses-grid.drtpc-columns-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {

    .drtpc-courses-grid.drtpc-columns-4,
    .drtpc-courses-grid.drtpc-columns-3,
    .drtpc-courses-grid.drtpc-columns-2 {
        grid-template-columns: 1fr;
    }

    .drtpc-courses-filters .drtpc-filter-row {
        flex-direction: column;
    }
}

/* ============================================================
   Course Card
   ============================================================ */
.drtpc-course-card {
    background: var(--drtpc-course-card-bg);
    border-radius: var(--drtpc-course-radius);
    box-shadow: var(--drtpc-course-shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--drtpc-course-transition);
    border: 1px solid transparent;
}

.drtpc-course-card:hover {
    box-shadow: var(--drtpc-course-shadow-hover);
    transform: translateY(-4px);
    border-color: var(--drtpc-course-primary);
}

/* Card Header */
.drtpc-course-card-header {
    padding: 16px 20px 0;
}

.drtpc-course-category-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--drtpc-course-primary-light);
    color: var(--drtpc-course-primary);
}

/* Card Content */
.drtpc-course-card-content {
    padding: 14px 20px 16px;
    flex: 1;
}

.drtpc-course-card-title {
    margin: 0 0 12px;
    font-size: 17px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--drtpc-course-text);
}

.drtpc-course-card-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

.drtpc-course-card-title a:hover {
    color: var(--drtpc-course-primary);
}

.drtpc-course-card-meta {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 13px;
    color: var(--drtpc-course-text-secondary);
    line-height: 1.5;
}

.drtpc-course-meta-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    color: var(--drtpc-course-primary);
    margin-top: 2px;
}

.drtpc-course-meta-text {
    flex: 1;
}

/* Card Footer */
.drtpc-course-card-footer {
    padding: 12px 20px 18px;
    border-top: 1px solid var(--drtpc-course-border);
}

.drtpc-course-view-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--drtpc-course-primary);
    text-decoration: none;
    transition: var(--drtpc-course-transition);
}

.drtpc-course-view-link:hover {
    gap: 10px;
    color: var(--drtpc-course-primary-dark);
}

.drtpc-course-arrow {
    transition: transform 0.2s ease;
}

.drtpc-course-view-link:hover .drtpc-course-arrow {
    transform: translateX(3px);
}

/* ============================================================
   No Results
   ============================================================ */
.drtpc-courses-grid .drtpc-no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--drtpc-course-text-secondary);
}

.drtpc-courses-grid .drtpc-no-results p {
    font-size: 16px;
    margin: 0;
}

/* ============================================================
   Load More
   ============================================================ */
.drtpc-courses-load-more {
    text-align: center;
    margin-top: 32px;
}

.drtpc-courses-load-more .drtpc-load-more-btn {
    padding: 12px 36px;
    background: var(--drtpc-course-primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--drtpc-course-transition);
}

.drtpc-courses-load-more .drtpc-load-more-btn:hover {
    background: var(--drtpc-course-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26, 115, 232, 0.3);
}

.drtpc-courses-load-more .drtpc-load-more-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ============================================================
   Single Course Page
   ============================================================ */
.drtpc-single-course {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 16px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
}

/* Breadcrumb */
.drtpc-course-breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--drtpc-course-text-secondary);
}

.drtpc-course-breadcrumb a {
    color: var(--drtpc-course-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.drtpc-course-breadcrumb a:hover {
    color: var(--drtpc-course-primary-dark);
    text-decoration: underline;
}

.drtpc-breadcrumb-sep {
    color: var(--drtpc-course-border);
}

.drtpc-breadcrumb-current {
    color: var(--drtpc-course-text);
    font-weight: 500;
}

/* Hero */
.drtpc-course-hero {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--drtpc-course-primary-light);
}

.drtpc-course-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--drtpc-course-text);
    margin: 0 0 16px;
    line-height: 1.3;
}

.drtpc-course-category-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.drtpc-course-cat-tag {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    background: var(--drtpc-course-primary-light);
    color: var(--drtpc-course-primary);
}

/* Layout: Main + Sidebar */
.drtpc-course-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 32px;
    align-items: start;
}

@media (max-width: 900px) {
    .drtpc-course-layout {
        grid-template-columns: 1fr;
    }

    .drtpc-course-title {
        font-size: 26px;
    }
}

/* Coordinator */
.drtpc-course-coordinator {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--drtpc-course-primary-light);
    border-radius: var(--drtpc-course-radius);
    margin-bottom: 28px;
    border-left: 4px solid var(--drtpc-course-primary);
}

.drtpc-coordinator-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--drtpc-course-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.drtpc-coordinator-name {
    margin: 0 0 4px;
    font-size: 17px;
    font-weight: 600;
    color: var(--drtpc-course-text);
}

.drtpc-coordinator-title {
    margin: 0;
    font-size: 14px;
    color: var(--drtpc-course-text-secondary);
    line-height: 1.5;
}

/* Course Sections */
.drtpc-course-section {
    margin-bottom: 28px;
}

.drtpc-course-section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 600;
    color: var(--drtpc-course-text);
    margin: 0 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--drtpc-course-primary-light);
}

.drtpc-course-section-title svg {
    color: var(--drtpc-course-primary);
    flex-shrink: 0;
}

.drtpc-course-section-content {
    font-size: 15px;
    line-height: 1.7;
    color: var(--drtpc-course-text);
}

.drtpc-course-section-content ul,
.drtpc-course-section-content ol {
    padding-left: 20px;
    margin: 8px 0;
}

.drtpc-course-section-content li {
    margin-bottom: 6px;
}

.drtpc-course-section-content h3,
.drtpc-course-section-content h4 {
    margin: 16px 0 8px;
    color: var(--drtpc-course-text);
}

/* Sidebar */
.drtpc-course-sidebar {
    position: sticky;
    top: 24px;
}

.drtpc-course-info-card {
    background: var(--drtpc-course-card-bg);
    border-radius: var(--drtpc-course-radius);
    box-shadow: var(--drtpc-course-shadow);
    padding: 24px;
    border: 1px solid var(--drtpc-course-border);
}

.drtpc-sidebar-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--drtpc-course-text);
    margin: 0 0 18px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--drtpc-course-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 12px;
}

.drtpc-sidebar-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--drtpc-course-border);
}

.drtpc-sidebar-item:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.drtpc-sidebar-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--drtpc-course-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.drtpc-sidebar-label svg {
    color: var(--drtpc-course-primary);
}

.drtpc-sidebar-value {
    font-size: 15px;
    color: var(--drtpc-course-text);
    font-weight: 500;
    line-height: 1.5;
}

/* Register Button */
.drtpc-sidebar-register {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid var(--drtpc-course-primary-light);
}

.drtpc-register-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--drtpc-course-primary), var(--drtpc-course-primary-dark));
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--drtpc-course-transition);
    box-shadow: 0 4px 12px rgba(26, 115, 232, 0.3);
}

.drtpc-register-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(26, 115, 232, 0.4);
    color: #fff;
    text-decoration: none;
    background: linear-gradient(135deg, var(--drtpc-course-primary-dark), #0d47a1);
}

.drtpc-register-btn:active {
    transform: translateY(0);
}

/* Bottom CTA */
.drtpc-course-bottom-cta {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 2px solid var(--drtpc-course-primary-light);
    text-align: center;
}

.drtpc-register-btn-large {
    padding: 18px 40px;
    font-size: 17px;
    border-radius: 10px;
    display: inline-flex;
    width: auto;
}

/* ============================================================
   RTL Support
   ============================================================ */
[dir="rtl"] .drtpc-courses-wrapper,
[dir="rtl"] .drtpc-single-course {
    direction: rtl;
    text-align: right;
}

[dir="rtl"] .drtpc-course-coordinator {
    border-left: none;
    border-right: 4px solid var(--drtpc-course-primary);
}

[dir="rtl"] .drtpc-course-section-content ul,
[dir="rtl"] .drtpc-course-section-content ol {
    padding-left: 0;
    padding-right: 20px;
}

[dir="rtl"] .drtpc-courses-filters .drtpc-filter-select {
    background-position: left 12px center;
    padding-right: 14px;
    padding-left: 36px;
}

[dir="rtl"] .drtpc-course-arrow {
    transform: scaleX(-1);
}

[dir="rtl"] .drtpc-course-view-link:hover .drtpc-course-arrow {
    transform: scaleX(-1) translateX(3px);
}

/* ============================================================
   Animations
   ============================================================ */
@keyframes drtpc-course-fade-in {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.drtpc-course-card {
    animation: drtpc-course-fade-in 0.4s ease forwards;
}

.drtpc-course-card:nth-child(2) {
    animation-delay: 0.05s;
}

.drtpc-course-card:nth-child(3) {
    animation-delay: 0.1s;
}

.drtpc-course-card:nth-child(4) {
    animation-delay: 0.15s;
}

.drtpc-course-card:nth-child(5) {
    animation-delay: 0.2s;
}

.drtpc-course-card:nth-child(6) {
    animation-delay: 0.25s;
}