/* Courses Page Specific Styles */

/* Sticky Category Navigation */
.category-nav {
    background-color: var(--primary-dark-blue);
    padding: 1rem 0;
    position: sticky;
    top: 70px;
    z-index: 999;
    box-shadow: 0 2px 10px var(--shadow);
    margin-top: 30px;
}

.category-menu {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    list-style: none;
    flex-wrap: wrap;
    max-height: 120px;
    align-content: flex-start;
}

.category-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    padding: 0.6rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0;
    line-height: 0;
    min-height: 40px;
    min-width: 40px;
    width: 40px;
    height: 40px;
}

.category-link i {
    font-size: 1.2rem;
    line-height: 0;
}

.category-link:hover,
.category-link.active {
    background-color: var(--accent-yellow);
    color: var(--primary-dark-blue);
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, var(--primary-dark-blue) 0%, #0a3d52 100%);
    color: var(--white);
    padding: 120px 0 80px;
    text-align: center;
}

.page-title {
    font-size: 3rem;
    color: #e0e21d;
    margin-bottom: 1rem;
}

.page-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto;
}

/* Course Sections */
.course-section {
    padding: 80px 0;
    background-color: var(--white);
}

.course-section:first-of-type {
    padding-top: 50px;
}

.course-section:nth-child(even) {
    background-color: var(--off-white);
}

.category-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 3rem;
    color: var(--primary-dark-blue);
    font-size: 2.5rem;
    position: relative;
}

.category-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    right: 0;
    width: 100px;
    height: 3px;
    background-color: var(--accent-yellow);
}

.category-title i {
    color: var(--accent-yellow);
    font-size: 2rem;
}

/* Large Course Cards */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, 350px);
    gap: 2rem;
    justify-content: flex-start;
    align-items: stretch;
}

/* Coming Soon Message */
.coming-soon-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
}

.coming-soon-message i {
    font-size: 3rem;
    color: var(--accent-yellow);
    margin-bottom: 1rem;
}

.coming-soon-message h3 {
    color: var(--primary-dark-blue);
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.coming-soon-message p {
    color: var(--gray);
    font-size: 1.1rem;
}

.course-card-large {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    border: 2px solid transparent;
    width: 350px;
    height: 520px;
    display: flex;
    flex-direction: column;
}

.course-card-large:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px var(--shadow);
    border-color: var(--accent-yellow);
}

.course-card-large .course-image {
    height: 180px;
    overflow: hidden;
    position: relative;
    background-color: #ffffff;
    border-top-left-radius: var(--border-radius);
    border-top-right-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

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

.course-card-large .course-content {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.course-card-large .course-title {
    color: var(--primary-dark-blue);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.course-card-large .course-description {
    color: var(--gray);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.course-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex: 1;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray);
    font-size: 0.9rem;
}

.detail-item i {
    color: var(--accent-yellow);
    width: 16px;
}

.course-card-large .btn {
    margin-top: auto;
    align-self: flex-start;
}

/* WhatsApp Registration Section */
.whatsapp-registration-section {
    padding: 60px 0;
    background-color: var(--off-white);
}

.whatsapp-registration {
    background-color: var(--white);
    color: var(--primary-dark-blue);
    padding: 3rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    max-width: 700px;
    margin: 0 auto;
}

.whatsapp-registration h3 {
    color: var(--primary-dark-blue);
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.whatsapp-registration p {
    color: var(--primary-dark-blue);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.registration-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.registration-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-dark-blue);
    background-color: var(--accent-yellow);
    text-decoration: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 2px solid var(--accent-yellow);
    flex: 1;
    min-width: 200px;
    max-width: 300px;
}

.registration-btn:hover {
    background-color: var(--primary-dark-blue);
    color: var(--accent-yellow);
    border-color: var(--primary-dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(11, 69, 96, 0.3);
}

/* Scroll Animation for Category Navigation */
.category-nav.scrolled {
    background-color: rgba(11, 69, 96, 0.95);
    backdrop-filter: blur(10px);
}

/* Active Section Highlight */
.category-nav .category-link.active {
    background-color: var(--accent-yellow);
    color: var(--primary-dark-blue);
    position: relative;
}

/* Remove triangle arrow to avoid perceived vertical offset */
.category-nav .category-link.active::after { display: none; }

/* Responsive Design */
@media (max-width: 1024px) {
    .courses-grid {
        grid-template-columns: repeat(auto-fit, 320px);
        justify-content: center;
    }
    
    .course-card-large {
        width: 320px;
        height: 500px;
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
    
    .category-nav {
        top: 60px;
        margin-top: 25px;
    }
    
    .category-menu {
        gap: 0.8rem;
        justify-content: flex-start;
        overflow-x: auto;
        padding: 0 1rem;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
        scrollbar-color: var(--accent-yellow) transparent;
        max-height: 100px;
    }
    
    .category-menu::-webkit-scrollbar {
        height: 4px;
    }
    
    .category-menu::-webkit-scrollbar-track {
        background: transparent;
    }
    
    .category-menu::-webkit-scrollbar-thumb {
        background: var(--accent-yellow);
        border-radius: 2px;
    }
    
    .category-link {
        flex-shrink: 0;
    }
    
    .category-title {
        font-size: 1.8rem;
    }
    
    .category-title i {
        font-size: 1.5rem;
    }
    
    .courses-grid {
        grid-template-columns: repeat(auto-fit, 300px);
        justify-content: center;
    }
    
    .course-card-large {
        width: 300px;
        height: 480px;
    }
    
    .coming-soon-message {
        padding: 3rem 1.5rem;
    }
    
    .coming-soon-message i {
        font-size: 2.5rem;
    }
    
    .coming-soon-message h3 {
        font-size: 1.5rem;
    }
    
    .coming-soon-message p {
        font-size: 1rem;
    }
    
    .course-card-large .course-content {
        padding: 1.5rem;
    }
    
    .whatsapp-registration {
        padding: 2rem;
        margin: 0 1rem;
    }
    
    .whatsapp-registration h3 {
        font-size: 1.3rem;
    }
    
    .registration-buttons {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .registration-btn {
        min-width: 100%;
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .page-header {
        padding: 100px 0 60px;
    }
    
    .page-title {
        font-size: 1.8rem;
    }
    
    .category-nav {
        padding: 0.5rem 0;
    }
    
    .category-menu {
        gap: 0.5rem;
        padding: 0 0.5rem;
        max-height: none;
        flex-wrap: nowrap; /* single row */
        justify-content: center; /* center icons row */
    }
    
    .category-link {
        flex-shrink: 0;
    }
    
    .course-section {
        padding: 60px 0;
    }
    
    .course-section:first-of-type {
        padding-top: 40px;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
        justify-content: center;
    }
    
    .course-card-large {
        width: 100%;
        max-width: 350px;
        height: 520px;
        margin: 0 auto;
    }
    
    .category-title {
        font-size: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .whatsapp-registration {
        padding: 1.5rem;
    }
    
    .registration-btn {
        font-size: 1rem;
        padding: 0.8rem 1.5rem;
    }
    
    .coming-soon-message {
        padding: 2.5rem 1rem;
    }
    
    .coming-soon-message i {
        font-size: 2rem;
    }
    
    .coming-soon-message h3 {
        font-size: 1.3rem;
    }
}

/* Very small screens (iPhone SE, etc.) */
@media (max-width: 360px) {
    .page-header {
        padding: 80px 0 50px;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .page-subtitle {
        font-size: 0.9rem;
    }
    
    .category-nav {
        padding: 0.3rem 0;
    }
    
    .category-menu {
        gap: 0.3rem;
        padding: 0 0.3rem;
        max-height: 70px;
    }
    
    .category-link {
        padding: 0.5rem;
    }
    
    .course-section {
        padding: 40px 0;
    }
    
    .category-title {
        font-size: 1.3rem;
        margin-bottom: 1.5rem;
    }
    
    .course-card-large {
        width: 100%;
        max-width: 300px;
        height: 480px;
    }
    
    .course-card-large .course-content {
        padding: 1rem;
    }
    
    .course-card-large .course-title {
        font-size: 1.1rem;
    }
    
    .course-card-large .course-description {
        font-size: 0.9rem;
    }
    
    .detail-item {
        font-size: 0.8rem;
    }
    
    .whatsapp-registration {
        padding: 1rem;
        margin: 0 0.5rem;
    }
    
    .whatsapp-registration h3 {
        font-size: 1.1rem;
    }
    
    .whatsapp-registration p {
        font-size: 0.9rem;
    }
    
    .registration-btn {
        font-size: 0.9rem;
        padding: 0.7rem 1rem;
    }
    
    .coming-soon-message {
        padding: 2rem 1rem;
    }
    
    .coming-soon-message i {
        font-size: 1.8rem;
    }
    
    .coming-soon-message h3 {
        font-size: 1.2rem;
    }
    
    .coming-soon-message p {
        font-size: 0.9rem;
    }
}

/* Animation for course cards */
.course-card-large {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.course-card-large:nth-child(1) { animation-delay: 0.1s; }
.course-card-large:nth-child(2) { animation-delay: 0.2s; }
.course-card-large:nth-child(3) { animation-delay: 0.3s; }

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

/* Hover effects for category links */
.category-link {
    position: relative;
}