/* Global Styles */
body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    color: #333;
    line-height: 1.6;
    background-color: #f8f9fa;
}

h1, h2, h3, h4, h5, h6 {
    color: #00629B; /* IEEE Blue */
    font-weight: 700;
}

a {
    color: #00629B;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
    color: #004b75;
}

/* Header / Hero Section */
.hero-section {
    background-color: #fff;
    padding: 60px 0;
    border-bottom: 4px solid #00629B;
    text-align: center;
}

.hero-title {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: #00629B;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #555;
    margin-bottom: 10px;
}

.hero-date {
    font-size: 1.2rem;
    font-weight: bold;
    color: #e74c3c;
}

/* Navigation */
.navbar {
    background-color: #00629B;
    padding: 10px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.navbar-nav .nav-link {
    color: #fff !important;
    font-weight: 500;
    padding: 10px 15px;
    transition: background-color 0.3s;
}

.navbar-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

/* Section Common */
section {
    padding: 60px 0;
    background-color: #fff;
    border-bottom: 1px solid #eee;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: #00629B;
    margin: 10px auto 0;
}

/* About Section */
.about-text {
    font-size: 1.1rem;
    text-align: justify;
}

/* Topics Section */
.topics-list {
    list-style-type: none;
    padding-left: 0;
}

.topics-list li {
    background-color: #f1f8ff;
    border-left: 5px solid #00629B;
    margin-bottom: 15px;
    padding: 15px;
    font-size: 1.1rem;
    transition: transform 0.2s;
}

.topics-list li:hover {
    transform: translateX(5px);
}

/* Organizers Section */
.organizer-card {
    border: none;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s;
    height: 100%;
    background-color: #fff;
}

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

.organizer-img-wrapper {
    text-align: center;
    padding-top: 20px;
}

.organizer-img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid #00629B;
}

.organizer-img-top {
    object-position: top;
}

.organizer-name {
    margin-top: 15px;
    font-size: 1.25rem;
    color: #00629B;
}

.organizer-institution {
    font-style: italic;
    color: #666;
    margin-bottom: 10px;
    min-height: 50px; /* Align text */
}

.bio-text {
    font-size: 0.9rem;
    color: #555;
    text-align: left;
}

.btn-link {
    padding: 0;
    font-size: 0.9rem;
    text-decoration: none;
}

/* Important Dates */
.dates-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.dates-table th, .dates-table td {
    padding: 15px;
    border-bottom: 1px solid #ddd;
    text-align: left;
}

.dates-table th {
    background-color: #00629B;
    color: #fff;
    width: 70%;
}

.dates-table td {
    font-weight: bold;
    color: #e74c3c;
}

/* Footer */
footer {
    background-color: #333;
    color: #fff;
    padding: 30px 0;
    text-align: center;
    font-size: 0.9rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-title {
        font-size: 1.8rem;
    }
    .hero-subtitle {
        font-size: 1.2rem;
    }
}