/* Custom animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero section slideshow */
.hero-slideshow {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.hero-slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
    background-size: cover;
    background-position: center;
}

.hero-slide.active {
    opacity: 0.6;
}

/* Section animations */
.section-animate {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.section-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Card hover effects */
.card-hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Mobile menu */
.mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.mobile-menu.open {
    max-height: 500px;
}

/* Skill bars animation */
.skill-bar-fill {
    transition: width 1.5s ease-in-out;
}

/* Additional responsive improvements */
@media (max-width: 768px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    /* Improve spacing on mobile */
    section {
        padding-top: 3rem;
        padding-bottom: 3rem;
    }
    
    /* Better text sizing on mobile */
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
}

/* For the timeline in experience section */
.timeline-item {
    position: relative;
    padding-left: 40px;
}

.timeline-item:before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 10px;
    height: 10px;
    background-color: #8b5cf6;
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: 0 0 0 2px white;
}

/* For the contact form */
.form-group {
    margin-bottom: 1rem;
}

.form-control {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: #8b5cf6;
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}

/* For the publication cards */
.publication-card {
    background-color: #fff;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.publication-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

/* For the event gallery */
.event-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.event-gallery img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    transition: transform 0.3s ease;
}

.event-gallery img:hover {
    transform: scale(1.05);
}

/* For the skills section */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* For the hero section */
.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: #8b5cf6;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: background-color 0.3s ease;
    margin: 0 0.5rem;
}

.hero-button:hover {
    background-color: #7c3aed;
}