:root {
    --dark-green: #023530;
    --sage-green: #4C6758;
    --light-cream: #EDEEE8;
}

/* Custom Background Colors */
.bg-dark-green { 
    background-color: var(--dark-green); 
}

.text-dark-green { 
    color: var(--dark-green); 
}

.bg-sage-green { 
    background-color: var(--sage-green); 
}

.text-sage-green { 
    color: var(--sage-green); 
}

.bg-light-cream { 
    background-color: var(--light-cream); 
}

.text-light-cream { 
    color: var(--light-cream); 
}

/* Background Image Styling */
.background-image {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('/static/images/berkeleybackground.jpg');
    background-size: cover;
    background-position: center;
    filter: grayscale(100%) brightness(0.3);
    z-index: -1;
}

/* Navigation Links */
.nav-link {
    position: relative;
    color: var(--light-cream);
    text-decoration: none;
    margin: 0 1.5rem;
    transition: color 0.3s ease;
}

.nav-link:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--light-cream);
    transition: width 0.3s ease;
}

.nav-link:hover:after {
    width: 100%;
}

/* Social Icons */
.social-icon {
    color: var(--light-cream);
    transition: transform 0.3s ease;
}

.social-icon:hover {
    transform: translateY(-3px);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .nav-link {
        margin: 0 1rem;
    }
    
    .social-icon {
        font-size: 1.5rem;
    }
}

.bio-text {
    color: var(--light-cream) ;
    max-width: 500px;
    width: 90%;
    text-align: justify;
    margin: 0 auto;
}

/* Projects Page Styling */
.project-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.category-button {
    transition: all 0.3s ease;
}

.category-button.active {
    background-color: var(--sage-green);
    color: var(--light-cream);
}

/* Project Grid Layout */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 2rem;
    padding: 1rem;
}

@media (min-width: 768px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}