/* GLOBAL STYLES & RESET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #ffffff;
}

/* HIDE SITE SCROLLBARS */
html, body {
    scrollbar-width: none;
    -ms-overflow-style: none;
}

html::-webkit-scrollbar, body::-webkit-scrollbar {
    display: none;
}

/* NAVIGATION HEADER */
header {
    display: flex;
    padding: 2rem 3rem;
    justify-content: flex-end;
    align-items: center;
}

header nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

header nav ul li a {
    text-decoration: none;
    color: #195217;
    font-family: 'Playfair Display', serif;
    font-size: 1.1rem;
    transition: opacity 0.2s ease;
}

header nav ul li a.active {
    opacity: 0.3;         
    pointer-events: none;
}

/* HOME PAGE LAYOUT */
.home-container {
    max-width: 700px;
    margin: 6rem auto; 
    padding: 0 2rem;
    display: flex;
    flex-direction: column;
    align-items: center; 
    gap: 2rem;
}

.Hero-Home #bigName {
    color: #1c552d;
    font-size: 60px; 
    font-family: 'Playfair Display', serif;
    font-style: italic;
    text-align: center;
}

#About {
    color: #232523;
    font-size: 20px; 
    text-align: center;
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
}

#Links {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

#Links img {
    height: 40px;
    width: 40px;
    object-fit: contain;
    transition: opacity 0.2s ease;
}

#Links a:hover img {
    opacity: 0.6;
}

/* HOME PAGE INTERACTIVE KEYWORDS */
.hover-word {
    cursor: pointer;
    user-select: none;
    color: inherit;
    text-decoration-line: underline;
    text-decoration-style: wavy;
    text-decoration-color: #1c552d;
    text-decoration-thickness: 1.5px;
    text-underline-offset: 4px;
    transition: opacity .2s ease;
}

.hover-word:hover {
    opacity: .65;
}

.hover-word:active {
    opacity: .6;
}

#hoverCard {
    margin: 2rem auto 0;
    max-width: 520px;
    min-height: 90px;
    padding-left: 1.25rem;
    border-left: 2px solid rgba(28, 85, 45, .18);
    text-align: left;
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s ease, visibility .2s ease;
}

#hoverCard.visible {
    opacity: 1;
    visibility: visible;
}

.card {
    display: none;
}

.card.active {
    display: block;
    animation: fade .18s ease;
}

.card h3 {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    color: #1c552d;
    font-size: 1.5rem;
    margin-bottom: .75rem;
}

.card p {
    font-family: 'Inter', sans-serif;
    color: #333;
    line-height: 1.7;
}

@keyframes fade {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* PROJECTS PAGE LAYOUT */
.content-container {
    max-width: 900px;
    margin: 4rem auto;    
    padding: 0 2rem;       
}

.Hero {
    color: #1c552d;
    font-size: 70px;  
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-weight: 400;
    margin-bottom: 2rem;
    text-align: left;
}

.project-filters {
    display: flex;
    flex-wrap: wrap;       
    gap: 1.2rem;
    margin-bottom: 3.5rem;
}

.filter-btn {
    background: none;
    border: none;
    padding: 0;
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    color: #232523;
    opacity: 0.4;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.filter-btn:hover,
.filter-btn.active {
    opacity: 1;
}

.projectList {
    list-style: none; 
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr); 
    gap: 0; 
}

.projectCard {
    background-color: #ffffff; 
    padding: 2.5rem 2rem;      
    border: none; 
}

.projectItem {
    display: flex;
    flex-direction: column; 
    text-decoration: none;
    color: #232523;
    line-height: 1.6;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: opacity 0.2s ease;
}

.projectItem:hover {
    opacity: 0.6;
}

.projectTitle {
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    font-weight: 700;
    font-style: italic;
    color: #1c552d; 
    margin-bottom: 0.4rem;
}

.projectDescription {
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    color: #333333;
}

.projectCard.hidden {
    display: none; 
}

/* RESEARCH PAGE LAYOUT */
.research-container {
    max-width: 760px;
    margin: 4rem auto;    
    padding: 0 2rem;  
}

.research-subtitle {
    font-family: 'Inter', sans-serif;
    font-size: 1.05rem;
    line-height: 1.9;
    color: rgba(35, 37, 35, 0.75);
    margin-bottom: 2.5rem;
    letter-spacing: 0.2px;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    color: #1c552d;
    font-size: 1.9rem;
    margin: 2.5rem 0 1.2rem;
    font-weight: 400;
}

.research-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    margin-top: 0.5rem;
}

.research-item {
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(28, 85, 45, 0.15);
}

.research-item:last-child {
    border-bottom: none;
}

.research-paper-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.research-meta {
    font-size: 0.85rem;
    color: #1c552d;
    opacity: 0.6;
    margin-bottom: 0.4rem;
    font-family: 'Inter', sans-serif;
}

.research-paper-title {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-size: 1.5rem;
    color: #1c552d;
    margin-bottom: 0.4rem;
    font-weight: 400;
    transition: opacity 0.2s ease;
}

.research-paper-link:hover .research-paper-title {
    opacity: 0.6;
}

.research-desc {
    font-size: 1rem;
    line-height: 1.7;
    color: #444;
    font-family: 'Inter', sans-serif;
}

.research-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.research-tag {
    border: 1px solid rgba(28, 85, 45, 0.25);
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    font-size: 0.85rem;
    color: #1c552d;
    font-family: 'Inter', sans-serif;
    transition: all 0.2s ease;
    cursor: default;
}

.research-tag:hover {
    background: rgba(28, 85, 45, 0.06);
}

/* RESPONSIVE MEDIA BREAKPOINTS */
@media (max-width: 768px) {
    .content-container {
        max-width: 650px;
    }

    .projectList {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    header {
        justify-content: center; 
        padding: 1.5rem 1rem;
    }

    nav ul {
        justify-content: center;
        gap: .9rem;
    }

    nav a {
        font-size: .95rem;
    }

    .Hero-Home #bigName {
        font-size: 3rem;
    }

    .Hero {
        font-size: 2.8rem;
    }

    .projectCard {
        padding: 2rem 0; 
    }
}