/* Course Filter System Styles */

/* Filter Navigation */
.course-filter-section {
    padding: 20px 0;
    margin-bottom: 30px;
}

.course-filter-nav {
    margin-bottom: 0;
}

.course-filter-nav .filter-btn {
    background: transparent;
    border: 2px solid var(--techguru-base);
    color: var(--techguru-base);
    padding: 8px 20px;
    margin: 0 8px 10px;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 14px;
    font-family: var(--techguru-font);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}

.course-filter-nav .filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 210, 93, 0.2), transparent);
    transition: left 0.5s;
}

.course-filter-nav .filter-btn:hover::before {
    left: 100%;
}

.course-filter-nav .filter-btn:hover,
.course-filter-nav .filter-btn.active {
    background: var(--techguru-base);
    color: var(--techguru-black);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 210, 93, 0.3);
    border-color: var(--techguru-base);
}

.course-filter-nav .filter-btn.active {
    background: var(--techguru-base);
    color: var(--techguru-black);
    box-shadow: 0 4px 15px rgba(255, 210, 93, 0.3);
}

/* Course Items */
.course-item {
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    margin-bottom: 30px;
    opacity: 1;
    transform: translateY(0);
}

.course-item.hidden {
    opacity: 0;
    transform: translateY(30px);
    pointer-events: none;
    position: absolute;
    visibility: hidden;
}

.course-item.visible {
    animation: courseFadeInUp 0.6s ease forwards;
}

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

/* Course Category Badge */
.course-category-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--techguru-base);
    color: var(--techguru-black);
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 12px;
    font-weight: 700;
    z-index: 3;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(255, 210, 93, 0.3);
}

/* Course Duration */
.course-duration {
    color: var(--techguru-gray);
    font-size: 14px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.course-duration i {
    color: var(--techguru-base);
    font-size: 16px;
}

/* Course Level */
.course-level {
    display: inline-block;
    background: rgba(255, 210, 93, 0.15);
    color: var(--techguru-base);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 1px solid rgba(255, 210, 93, 0.3);
}

/* Filter Results Counter */
.filter-results-counter {
    text-align: center;
    margin-bottom: 40px;
    color: var(--techguru-gray);
    font-size: 16px;
}

.filter-results-counter .count {
    color: var(--techguru-base);
    font-weight: 700;
}

/* No Results Message */
.no-courses-message {
    text-align: center;
    padding: 80px 20px;
    color: var(--techguru-gray);
}

.no-courses-message i {
    font-size: 64px;
    color: var(--techguru-base);
    margin-bottom: 20px;
    opacity: 0.5;
}

.no-courses-message h3 {
    color: var(--techguru-white);
    margin-bottom: 15px;
    font-size: 24px;
}

.no-courses-message p {
    font-size: 16px;
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 991px) {
    .course-filter-section {
        padding: 40px 0 30px;
    }
    
    .course-filter-nav .filter-btn {
        padding: 12px 25px;
        margin: 0 8px 15px;
        font-size: 14px;
    }
}

@media (max-width: 767px) {
    .course-filter-section {
        padding: 30px 0 20px;
    }
    
    .course-filter-nav .filter-btn {
        padding: 10px 20px;
        margin: 0 5px 10px;
        font-size: 13px;
        letter-spacing: 0.3px;
    }
    
    .course-category-badge {
        top: 15px;
        right: 15px;
        padding: 6px 12px;
        font-size: 11px;
    }
}

@media (max-width: 575px) {
    .course-filter-nav .filter-btn {
        width: calc(50% - 10px);
        margin: 0 5px 10px;
        text-align: center;
    }
}

/* Loading Animation */
.course-item.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Smooth Transitions */
.course-container {
    transition: all 0.3s ease;
}

/* Hover Effects for Course Cards */
.blog-one__single:hover .course-category-badge {
    transform: scale(1.05);
    transition: transform 0.3s ease;
}

/* Filter Button Hover Animation */
.course-filter-nav .filter-btn:hover {
    animation: filterButtonPulse 0.6s ease-in-out;
}

@keyframes filterButtonPulse {
    0%, 100% {
        transform: translateY(-3px) scale(1);
    }
    50% {
        transform: translateY(-3px) scale(1.05);
    }
}

/* Standardized Course Image Dimensions */
.blog-one__img img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    object-position: center;
    border-radius: 8px;
    transition: transform 0.3s ease;
}

.blog-one__img img:hover {
    transform: scale(1.05);
}

/* Ensure consistent image container */
.blog-one__img {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    height: 250px;
}

/* Responsive image sizing */
@media (max-width: 991px) {
    .blog-one__img img,
    .blog-one__img {
        height: 220px;
    }
}

@media (max-width: 767px) {
    .blog-one__img img,
    .blog-one__img {
        height: 200px;
    }
}

@media (max-width: 575px) {
    .blog-one__img img,
    .blog-one__img {
        height: 180px;
    }
}