body {
    background: #f8f9fa;
    color: #212529;
}

/* Gallery */
.carousel-inner {
    aspect-ratio: 4 / 5;
    overflow: hidden;
}

.carousel-item {
    height: 100%;
}

.carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Navigation */
.nav-pills .nav-link {
    color: #6c757d;
    border-radius: 0;
    padding-left: 0;
    padding-right: 0;
    margin-right: 1.25rem;
}

.nav-pills .nav-link.active {
    color: #212529;
    background: transparent;
    font-weight: 600;
}

.nav-pills .nav-link:hover {
    color: #212529;
}

.portfolio-tab {
    color: #6c757d;
    transition: all 0.25s ease;
}

.portfolio-tab:hover {
    transform: translateY(-1px);
}

/* Content loading */
.content-wrapper {
    position: relative;
}

.content-loader {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    display: none;
    z-index: 10;
}

.content-loader.active {
    display: block;
}

#portfolio-content {
    transition:
        opacity 0.2s ease,
        transform 0.2s ease;
}

.content-loading {
    opacity: 0.35;
    transform: translateY(4px);
}

/* Education */
.education-timeline {
    position: relative;
    padding-left: 2rem;
}

.education-timeline::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 7px;
    width: 1px;
    background: #dee2e6;
}

.education-item {
    position: relative;
    padding-bottom: 1.75rem;
}

.education-item:last-child {
    padding-bottom: 0;
}

.education-marker {
    position: absolute;
    left: -2rem;
    top: 0.35rem;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid #6c757d;
}

.education-card {
    transition: transform 0.2s ease;
}

.education-card:hover {
    transform: translateX(3px);
}

/* Experience */
.experience-timeline {
    position: relative;
    padding-left: 2rem;
}

.experience-timeline::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 7px;
    width: 1px;
    background: #dee2e6;
}

.experience-item {
    position: relative;
    padding-bottom: 2rem;
}

.experience-item:last-child {
    padding-bottom: 0;
}

.experience-marker {
    position: absolute;
    left: -2rem;
    top: 0.35rem;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid #6c757d;
    transition: all 0.25s ease;
}

.experience-marker.current {
    border-width: 3px;
}

.experience-card {
    transition: transform 0.2s ease;
}

.experience-card:hover {
    transform: translateX(3px);
}

/* Projects */
.project-card {
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.project-card:hover {
    transform: translateY(-3px);
}

/* Mobile */
@media (max-width: 767.98px) {

    .nav-pills {
        row-gap: 0.5rem;
    }

    .nav-pills .nav-link {
        margin-right: 1rem;
    }
}