/* courses_list.css */

/* Importa font per un aspetto più moderno */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #2563eb;
    --primary-light: #3b82f6;
    --primary-dark: #1d4ed8;
    --accent-color: #f59e0b;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --background-primary: #ffffff;
    --background-secondary: #f8fafc;
    --background-tertiary: #f1f5f9;
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-color) 0%, #f97316 100%);
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
}

#courses {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1rem;
    background: linear-gradient(180deg, var(--background-secondary) 0%, var(--background-primary) 30%);
    min-height: 100vh;
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: 4rem;
    padding: 3rem 0;
}

.main-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin: 0 0 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.title-accent {
    position: relative;-webkit-background-clip: initial;
    -webkit-text-fill-color: initial;
    background-clip: initial;
    font-weight: 600;
    color: #f05711;
    display: inline-block;
}

.title-accent::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-accent);
    border-radius: 2px;
    transform: scaleX(0);
    animation: underlineExpand 2s ease-out 0.5s forwards;
}

@keyframes underlineExpand {
    to {
        transform: scaleX(1);
    }
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin: 0;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Filter Section */
.filter-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    padding: 1.5rem;
    background: var(--background-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
}

.filter-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.filter-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin: 0;
}

.filter-icon {
    width: 18px;
    height: 18px;
    color: var(--primary-color);
}

.filter-select {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    background: var(--background-primary);
    color: var(--text-primary);
    min-width: 220px;
    transition: var(--transition);
    cursor: pointer;
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.filter-select:hover {
    border-color: var(--primary-light);
}

.results-count {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.count-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.count-text {
    font-weight: 500;
}

/* Search Section Styles */
.search-section {
    margin: 2rem 0;
    padding: 0 1rem;
}

.search-form {
    max-width: 800px;
    margin: 0 auto;
}

.search-wrapper {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.search-input-container {
    position: relative;
    flex: 1;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 1rem;
    width: 1.25rem;
    height: 1.25rem;
    color: #6b7280;
    z-index: 2;
}

.search-input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 2.75rem;
    border: 2px solid #e5e7eb;
    border-radius: 0.75rem;
    font-size: 1rem;
    background-color: #ffffff;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.search-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background-color: #ffffff;
}

.search-input::placeholder {
    color: #9ca3af;
    font-style: italic;
}

.clear-search {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 0.375rem;
    color: #6b7280;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.clear-search:hover {
    background-color: #f3f4f6;
    color: #374151;
}

.clear-search svg {
    width: 1rem;
    height: 1rem;
}

.search-button {
    padding: 0.875rem 1.5rem;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    border: none;
    border-radius: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(59, 130, 246, 0.25);
    white-space: nowrap;
}

.search-button:hover {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    transform: translateY(-1px);
    box-shadow: 0 6px 12px rgba(59, 130, 246, 0.3);
}

.search-button:active {
    transform: translateY(0);
}

.search-button svg {
    width: 1.125rem;
    height: 1.125rem;
}

/* Search info in results count */
.search-info {
    color: #6b7280;
    font-style: italic;
    margin-left: 0.5rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .search-wrapper {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .search-input-container {
        width: 100%;
    }
    
    .search-button {
        width: 100%;
        justify-content: center;
        padding: 1rem;
    }
    
    .search-section {
        padding: 0 0.5rem;
    }
}

/* Courses Grid */
.courses-container {
    position: relative;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

/* Course Card */
.course-card {
    background: var(--background-primary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.course-card:hover::before {
    opacity: 1;
}

/* Card Image */
.card-image {
    height: 240px;
    overflow: hidden;
    position: relative;
    background: var(--background-tertiary);
}

.placeholder-image {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--background-tertiary) 0%, var(--border-light) 100%);
}

.placeholder-content {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: var(--background-primary);
    border-radius: 50%;
    box-shadow: var(--shadow-md);
}

.placeholder-content svg {
    width: 40px;
    height: 40px;
    color: var(--text-muted);
}

.image-link {
    display: block;
    position: relative;
    width: 100%;
    height: 100%;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.8) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    transition: var(--transition);
}

.course-card:hover .image-overlay {
    opacity: 1;
}

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

.view-course {
    color: white;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transform: translateY(20px);
    transition: var(--transition);
}

.course-card:hover .view-course {
    transform: translateY(0);
}

/* Card Content */
.card-content {
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.card-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
}

.card-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

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

/* Course Dates */
.course-dates {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--background-tertiary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-light);
}

.date-item {
    flex: 1;
}

.date-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.date-icon {
    width: 18px;
    height: 18px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.date-content {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.date-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.date-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.date-separator {
    width: 1px;
    height: 30px;
    background: var(--border-color);
    flex-shrink: 0;
}

/* Card Excerpt */
.card-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Card Footer */
.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border-light);
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.meta-icon {
    width: 14px;
    height: 14px;
}

.card-cta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 1px solid transparent;
}

.card-cta:hover {
    background: var(--primary-color);
    color: white;
    transform: translateX(4px);
}

.card-cta svg {
    width: 16px;
    height: 16px;
    transition: var(--transition);
}

.card-cta:hover svg {
    transform: translateX(2px);
}

/* Pagination */
.pagination-section {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-light);
}

.pagination-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.nav-button {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background: var(--background-primary);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    border-radius: var(--border-radius);
    border: 2px solid var(--primary-color);
    transition: var(--transition);
    font-size: 0.95rem;
}

.nav-button:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.nav-button svg {
    width: 18px;
    height: 18px;
    transition: var(--transition);
}

.prev-button:hover svg {
    transform: translateX(-3px);
}

.next-button:hover svg {
    transform: translateX(3px);
}

.page-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    background: var(--background-tertiary);
    border-radius: var(--border-radius);
}

.current-page {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.total-pages {
    font-weight: 600;
    color: var(--text-primary);
}

.page-separator {
    color: var(--text-muted);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--background-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
}

.empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    padding: 1.5rem;
    background: var(--background-tertiary);
    border-radius: 50%;
    color: var(--text-muted);
}

.empty-icon svg {
    width: 100%;
    height: 100%;
}

.empty-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 1rem;
}

.empty-message {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* Responsive Design */
@media (max-width: 1200px) {
    #courses {
        max-width: 1200px;
    }
    
    .courses-grid {
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    }
}

@media (max-width: 1024px) {
    .courses-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: 1.5rem;
    }
    
    .filter-section {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .filter-wrapper {
        justify-content: center;
    }
    
    .results-count {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    #courses {
        padding: 1.5rem 1rem;
    }
    
    .hero-section {
        margin-bottom: 3rem;
        padding: 2rem 0;
    }
    
    .main-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .course-card {
        margin: 0 auto;
        max-width: 500px;
    }
    
    .card-image {
        height: 220px;
    }
    
    .card-content {
        padding: 1.5rem;
        gap: 1.25rem;
    }
    
    .course-dates {
        flex-direction: column;
        gap: 1rem;
    }
    
    .date-separator {
        width: 100%;
        height: 1px;
    }
    
    .card-footer {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .card-cta {
        justify-content: center;
        padding: 0.75rem 1.5rem;
    }
    
    .pagination-controls {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-button {
        justify-content: center;
        width: 100%;
        max-width: 200px;
    }
    
    .filter-wrapper {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .filter-select {
        min-width: auto;
        width: 100%;
    }
}

@media (max-width: 480px) {
    #courses {
        padding: 1rem 0.75rem;
    }
    
    .hero-section {
        padding: 1.5rem 0;
        margin-bottom: 2rem;
    }
    
    .filter-section {
        padding: 1rem;
        margin-bottom: 2rem;
    }

    .search-input {
        padding: 0.75rem 1rem 0.75rem 2.5rem;
        font-size: 0.875rem;
    }
    
    .search-icon {
        left: 0.75rem;
        width: 1.125rem;
        height: 1.125rem;
    }
    
    .clear-search {
        right: 0.75rem;
    }
    
    .search-button {
        padding: 0.875rem;
        font-size: 0.875rem;
    }
    
    .card-image {
        height: 200px;
    }
    
    .card-content {
        padding: 1.25rem;
        gap: 1rem;
    }
    
    .card-title {
        font-size: 1.1rem;
    }
    
    .course-dates {
        padding: 0.75rem;
    }
    
    .date-info {
        gap: 0.5rem;
    }
    
    .date-icon {
        width: 16px;
        height: 16px;
    }
    
    .empty-state {
        padding: 3rem 1.5rem;
    }
    
    .empty-icon {
        width: 60px;
        height: 60px;
        padding: 1rem;
    }
}

/* Animation enhancements */
@media (prefers-reduced-motion: no-preference) {
    .course-card {
        animation-duration: 0.6s;
        animation-fill-mode: both;
        animation-name: fadeInUp;
    }
    
    .course-card:nth-child(1) { animation-delay: 0.1s; }
    .course-card:nth-child(2) { animation-delay: 0.2s; }
    .course-card:nth-child(3) { animation-delay: 0.3s; }
    .course-card:nth-child(4) { animation-delay: 0.4s; }
    .course-card:nth-child(5) { animation-delay: 0.5s; }
    .course-card:nth-child(6) { animation-delay: 0.6s; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for better accessibility */
.filter-select:focus,
.card-title a:focus,
.card-cta:focus,
.nav-button:focus,
.image-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .hero-section,
    .filter-section,
    .pagination-section {
        display: none;
    }
    
    .courses-grid {
        display: block;
    }
    
    .course-card {
        break-inside: avoid;
        margin-bottom: 1rem;
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .card-image {
        height: auto;
        max-height: 200px;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000;
        --border-light: #333;
        --text-secondary: #000;
        --text-muted: #333;
    }
    
    .course-card {
        border: 2px solid var(--border-color);
    }
    
    .card-cta {
        border: 2px solid var(--primary-color);
    }
}