/* Hero Section */
.hero-section {
    min-height: 100vh;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 76px;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
}

.scroll-down {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 2rem;
    text-decoration: none;
    animation: bounce 2s infinite;
}

.scroll-down:hover {
    color: #319E80;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-30px) translateX(-50%);
    }
    60% {
        transform: translateY(-15px) translateX(-50%);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    color: white;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

/* Section Styles */
.section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

/*Case Collaborator*/
.collaborator-section {
    background-color: #f8f9fa;
}

.collaborator-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

.collaborator-image img {
    width: 100%;
    max-width: 300px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/*.collaborator-info {*/
/*    padding: 0.5rem 0;*/
/*}*/

.collaborator-info h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 2rem;
}

.collaborator-info .position {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 0.5rem;
}

.collaborator-info .institution {
    color: #888;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.social-links a {
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--secondary-color);
}

/* Features */
.features {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    margin-top: 3rem;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.5rem;
}

.feature-item i {
    font-size: 2rem;
    color: #319E80;
}

@media (max-width: 768px) {
    .features {
        flex-direction: column;
        gap: 1.5rem;
    }
}

.feature-item i {
    font-size: 1.5rem;
    color: #319E80;
}

/* Collaborator Cards */
/*.collaborator-card {*/
/*    background: white;*/
/*    padding: 2rem;*/
/*    border-radius: 15px;*/
/*    box-shadow: 0 5px 15px rgba(0,0,0,0.1);*/
/*    height: 100%;*/
/*    transition: transform 0.3s ease;*/
/*}*/

/*.collaborator-card:hover {*/
/*    transform: translateY(-5px);*/
/*}*/

/*.collaborator-logo {*/
/*    height: 80px;*/
/*    margin-bottom: 1.5rem;*/
/*    object-fit: contain;*/
/*}*/

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 2rem;
    border-left: 2px solid #319E80;
}

.timeline-content {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.timeline-date {
    color: #319E80;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* Requirements */
/* Requirements Section */
.requirements-container {
    display: flex;
    flex-wrap: wrap;
    flex-direction: column;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.requirement-item {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.08);
    text-align: center;
    transition: transform 0.3s ease;
}

.requirement-item:hover {
    transform: translateY(-5px);
}

.requirement-item i {
    font-size: 2.8rem;
    color: #319E80;
    margin-bottom: 1.5rem;
}

.requirement-item h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: #333;
}

.requirement-item p {
    color: #666;
    margin-bottom: 1.5rem;
}

.document-links, .instagram-links {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.document-links .btn, .instagram-links .btn {
    width: 100%;
    padding: 0.8rem 1.2rem;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

@media (max-width: 768px) {
    .requirements-container {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2rem;
    }

    .requirement-item {
        padding: 2rem;
    }
    
    .collaborator-card {
        padding: 1rem;
    }
    
    .collaborator-image {
        text-align: center;
        margin-bottom: 1.5rem;
    }
    
    .collaborator-info {
        text-align: center;
    }
}

.requirement-item i {
    font-size: 2.5rem;
    color:#319E80;
    margin-bottom: 1rem;
}

/* CTA Section */
.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .section {
        padding: 60px 0;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 1rem;
    }

    .timeline-item {
        padding-left: 1.5rem;
    }
}

@media (max-width: 576px) {
    .requirements-container {
        grid-template-columns: 1fr;
    }

    .collaborator-card {
        margin-bottom: 1.5rem;
    }
}

/* Timeline Styles */
.timeline {
    position: relative;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    background: #C5CAE9;
    width: 5px;
    height: 95%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.timeline-item {
    width: 100%;
    margin-bottom: 70px;
}

.timeline-item::after {
    content: '';
    display: block;
    clear: both;
}

.timeline-img {
    width: 30px;
    height: 30px;
    background: #319E80;
    border-radius: 50%;
    position: absolute;
    left: 50%;
    margin-top: 25px;
    margin-left: -15px;
    box-shadow: 0 0 0 4px #fff;
}

.timeline-content {
    position: relative;
    width: 45%;
    padding: 30px;
    border-radius: 4px;
    background: #fff;
    box-shadow: 0 20px 25px -15px rgba(0, 0, 0, 0.3);
}

.timeline-content::after {
    content: '';
    position: absolute;
    border-style: solid;
    width: 0;
    height: 0;
    top: 30px;
    right: -15px;
    border-width: 10px 0 10px 15px;
    border-color: transparent transparent transparent #fff;
}

.timeline-item:nth-child(even) .timeline-content {
    float: right;
}

.timeline-item:nth-child(even) .timeline-content::after {
    content: '';
    position: absolute;
    border-style: solid;
    width: 0;
    height: 0;
    top: 30px;
    left: -15px;
    border-width: 10px 15px 10px 0;
    border-color: transparent #fff transparent transparent;
}

.timeline-content .date {
    background: #319E80;
    display: inline-block;
    color: #fff;
    padding: 10px;
    position: absolute;
    top: 0;
    right: 0;
    border-radius: 0 4px 0 0;
}

.timeline-item:nth-child(even) .timeline-content .date {
    right: auto;
    left: 0;
    border-radius: 4px 0 0 0;
}

.timeline-content h3 {
    margin: 1.5rem 0 0.5rem;
    color: #333;
    font-weight: 500;
}

/* Responsive Timeline */
@media screen and (max-width: 768px) {
    .timeline::before {
        left: 50px;
    }

    .timeline-img {
        left: 50px;
    }

    .timeline-content {
        max-width: 100%;
        width: auto;
        margin-left: 70px;
    }

    .timeline-item:nth-child(even) .timeline-content {
        float: none;
    }

    .timeline-item:nth-child(odd) .timeline-content::after {
        content: '';
        position: absolute;
        border-style: solid;
        width: 0;
        height: 0;
        top: 30px;
        left: -15px;
        border-width: 10px 15px 10px 0;
        border-color: transparent #fff transparent transparent;
    }

    .timeline-content .date {
        position: relative;
        top: -30px;
        left: 0;
        border-radius: 4px 4px 0 0;
        margin-bottom: -30px;
    }

    .timeline-item:nth-child(even) .timeline-content .date {
        left: 0;
    }
}

.about-image {
    max-width: 600px;
    margin: 0 auto 2rem;
}

.about-image {
    margin-bottom: 2rem;
}

.about-image img {
    width: 100%;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

@media (max-width: 991px) {
    .about-image {
        margin-bottom: 3rem;
    }
    
    .section-text {
        text-align: center;
    }
}

h2 {
    font-weight: 700;
    font-size: 2.5rem;
    margin-bottom: 20px;
    text-align: center;
    font-family: 'Bricolage Grotesque', sans-serif;
    color: #319E80;
}

#btnsec {
    border-radius: 10px;
    color: #319E80;
}

.btn-outline-primary {
    color: #319E80;
    border-color: #319E80;
}

.btn-outline-primary:hover {
    color: #fff;
    background-color: #319E80;
    border-color: #319E80;
}

.document-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.document-links .btn {
    width: 100%;
    text-align: left;
}

.requirement-item.expandable {
    cursor: pointer;
    overflow: hidden;
}

.requirement-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 1rem;
}

.requirement-header h3 {
    margin: 0;
    flex-grow: 1;
    text-align: left;
    margin-left: 1rem;
}

.expand-icon {
    transition: transform 0.3s ease;
    font-size: 1.2rem;
}

.requirement-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.requirement-item.expanded .requirement-content {
    max-height: 500px;
    transition: max-height 0.5s ease-in;
}

.requirement-item.expanded .expand-icon {
    transform: rotate(180deg);
}

.contact-card{
    background-color: #fff;
    border: #319E80 solid 5px;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.contact-card h3{
    color: #319E80;
    font-size: 2rem;
    margin-bottom: 10px;
    font-weight: bold;
}

/* Event Features */
.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    height: 100%;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card i {
    font-size: 2.5rem;
    color: #319E80;
    margin-bottom: 1rem;
}

.feature-card h4 {
    color: #333;
    margin-bottom: 1rem;
}

/* Objective Cards */
.objective-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    height: 100%;
    transition: transform 0.3s ease;
}

.objective-card:hover {
    transform: translateY(-5px);
}

.objective-card .card-header {
    background: #319E80;
    color: white;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.objective-card .card-header i {
    font-size: 1.8rem;
}

.objective-card .card-header h3 {
    margin: 0;
    font-size: 1.3rem;
}

.objective-card .card-body {
    padding: 1.5rem;
}

.objective-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.objective-card ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.objective-card ul li:before {
    content: '•';
    color: #319E80;
    position: absolute;
    left: 0;
}

/* Speakers Section */
.speaker-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.speaker-card:hover {
    transform: translateY(-5px);
}

.speaker-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
}

.speaker-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.speaker-info {
    padding: 1.5rem;
    text-align: center;
}

.speaker-info h3 {
    color: #333;
    margin-bottom: 0.5rem;
    font-size: 1.4rem;
}

.speaker-title {
    color: #319E80;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.speaker-org {
    color: #666;
    margin-bottom: 1rem;
}

.speaker-social {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.speaker-social a {
    color: #666;
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.speaker-social a:hover {
    color: #319E80;
}

/* YouTube Video Container */
.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 15px;
}

/* Kickoff Modal Styles */
.modal-content {
    border: none;
    border-radius: 15px;
    overflow: hidden;
}

.modal-header {
    position: absolute;
    right: 0;
    z-index: 1;
    background: transparent;
}

.btn-close {
    background-color: white;
    opacity: 0.8;
    border-radius: 50%;
    margin: 1rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.btn-close:hover {
    opacity: 1;
}

.modal-body img {
    border-radius: 15px;
}