/* Custom Styles - Bootstrap additions */

body {
    background-color: #f9f9f9;
}

/* Left-align all containers instead of Bootstrap's default centering */
.container {
    margin-left: 5rem;
    margin-right: 2rem;
    max-width: none;
}

/* Main Content */
main {
    background-color: white;
    margin: 0rem 0;
    padding: 2rem 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

main .container {
    padding: 0 20px;
}

/* Headings */
h2 {
    border-bottom: 2px solid #3498db;
    padding-bottom: 0.5rem;
}

/* Accordion Styling */
.accordion {
    margin: 2rem 0;
}


.accordion-button {
    font-size: 1.1rem;
    font-weight: 600;
    background-color: #f5f5f5;
    color: #333;
    border-left: 4px solid #3498db;
    border-top: none;
    border-right: none;
    border-bottom: none;
}
.accordion-button:not(.collapsed) {
    background-color: #e8e8e8;
    color: #111;
}


/* .accordion-button {
    background-color: #2c3e50;
    color: white;
    border: none;
}
.accordion-button:not(.collapsed) {
    background-color: #1a252f;
    color: white;
} */


/* .accordion-button {
    background-color: #eaf4ec;
    color: #2c5f2e;
    border: 2px solid #27ae60;
}
.accordion-button:not(.collapsed) {
    background-color: #27ae60;
    color: white;
} */

/* .accordion-button {
    font-size: 1.1rem;
    font-weight: 600;
    color: #502c2c;
    background-color: #e8f4f8;
    border: 2px solid #3498db;
    /* color: #2c3e50;
    background-color: #e8f4f8;
    border: 2px solid #3498db; */
}

.accordion-button:not(.collapsed) {
    background-color: #3498db;
    color: white;
    box-shadow: none;
} */

.accordion-button:focus {
    border-color: #3498db;
    box-shadow: 0 0 0 0.25rem rgba(52, 152, 219, 0.25);
}

.accordion-body {
    background-color: #f9f9f9;
    border-top: 2px solid #3498db;
}

/* Hero Section with Image */
.hero {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    margin-bottom: 4rem;
    max-width: 3000px;
}

.hero + .hero {
    padding-top: 4rem;
    margin-left: 0rem;
    border-top: 3px solid #e0e0e0;
}

.hero-content {
    flex: 1;
    max-width: 800px;
    margin-left: 0rem;
}

.hero-image {
    flex: 1;
    min-width: 400px;
}

.hero-image img {
    width: 100%;
    height: auto;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.hero-image_2 img {
    flex: 1;
    min-width: 400px;
    width: 400px;
    height: auto;
}

.hero-image_3 img {
    flex: 1;
    width: auto;
    height: 400px;
}

/* Research Interests Grid */
.research-interests {
    margin-top: 2rem;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.research-grid figure {
    margin: 0;
    text-align: center;
}

.research-grid img {
    width: auto;
    height: 300px;
    object-fit: cover;
    border-radius: 4px;
}

.research-grid figcaption {
    margin-top: 0.5rem;
    font-size: 2rem;
    color: #555;
}

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

/* Team Member Cards */
.team-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 1rem;
}

.team-card {
    display: inline-block;
    text-align: center;
}

.team-card img {
    height: 350px;
    width: auto;
    display: block;
}

.team-card figcaption {
    margin-top: 1rem;
    font-size: 1.5rem;
    line-height: 1.4;
}

/* Footer Styles */
.site-footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: rem 0;
    margin-top: 0rem;
}

.site-footer p {
    margin: 0.5rem 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
    }

    .hero-image {
        min-width: 100%;
    }

    .accordion-button {
        font-size: 1rem;
    }
}