body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.7;
    background: #f4f4f4;
    color: #333;
    margin: 0;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-weight: 600;
    color: #2c3e50;
}

main {
    padding: 40px;
    max-width: 1200px;
    margin: 20px auto;
}

a {
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #3498db;
}

a:focus, button:focus {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

#hero {
    min-height: 400px;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    position: relative;
}

#hero .container {
    position: relative;
    z-index: 2;
}

#hero::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1;
}

#hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    animation: fadeInDown 1s ease-out;
}

#hero p {
    font-size: 1.4rem;
    font-weight: 300;
    max-width: 800px;
    margin: 0 auto;
    animation: fadeInUp 1s ease-out;
}

#hero a {
    animation: zoomIn 1s ease-out;
}

#group-photo-section {
    text-align: center;
    padding: 40px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 40px;
    animation: slideIn 1s ease-out;
}

#group-photo {
    border-radius: 10px;
    max-width: 100%;
    height: auto;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
}

#group-photo:hover {
    transform: scale(1.03);
}

#group-photo-caption {
    margin-top: 1.5rem;
    color: #7f8c8d;
    font-style: italic;
}

.content-section {
    padding: 40px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 40px;
    transition: transform 0.3s ease;
    animation: fadeIn 1s ease-out;
}

.content-section:hover {
    transform: translateY(-8px);
}

.content-section h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: #3498db;
}

.card {
    border-radius: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
}

.card-body {
    padding: 2rem;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.card-text {
    color: #7f8c8d;
    margin-bottom: 1.5rem;
}

.card .btn-primary {
    background-color: #3498db;
    border: none;
    padding: 12px 24px;
    font-size: 1rem;
    transition: background-color 0.3s ease;
}

.card .btn-primary:hover {
    background-color: #2980b9;
}

#highlights-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    grid-gap: 30px;
    margin-bottom: 40px;
    animation: fadeInUp 1s ease-out;
}

#highlights-section .card {
    height: 100%;
}

#highlights-section h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #3498db;
}

#highlights-section p {
    color: #7f8c8d;
}

#highlights-section .btn {
    background-color: #2ecc71;
    border: none;
    padding: 10px 20px;
    transition: background-color 0.3s ease;
}

#highlights-section .btn:hover {
    background-color: #27ae60;
}

#about-us-section {
    text-align: center;
    padding: 60px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 40px;
    animation: fadeIn 1s ease-out;
}

#about-us-section h2 {
    margin-bottom: 2rem;
}

#about-us-section p {
    color: #7f8c8d;
    max-width: 800px;
    margin: 0 auto 2rem;
}

#about-us-section .btn-secondary {
    background-color: #7f8c8d;
    border: none;
    padding: 12px 24px;
    font-size: 1rem;
    transition: background-color 0.3s ease;
}

#about-us-section .btn-secondary:hover {
    background-color: #717d7e;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@media (max-width: 992px) {
    main {
        padding: 30px;
    }
    #hero h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    main {
        padding: 20px;
    }

    #hero h1 {
        font-size: 2rem;
    }
    #hero p {
        font-size: 1.2rem;
    }
    #highlights-section {
        grid-template-columns: 1fr;
    }
    .content-section, #about-us-section {
        padding: 30px;
    }
}

@media (max-width: 576px) {
    #hero h1 {
        font-size: 1.7rem;
    }
    #hero p {
        font-size: 1.1rem;
    }
    .card-title, #highlights-section h3 {
        font-size: 1rem;
    }
    .card-text, #highlights-section p {
        font-size: 0.9rem;
    }
    .btn, #highlights-section .btn, #about-us-section .btn-secondary {
        font-size: 0.9rem;
        padding: 10px 18px;
    }
    #about-us-section .btn-secondary {
        font-size: 0.9rem;
    }
}

.hover-opacity:hover {
    opacity: 0.85;
    transition: opacity 0.2s;
}

.display-6 {
    font-size: 2.2rem;
}

.ratio.ratio-16x9 img {
    object-fit: cover;
    width: 100%;
    height: 100%;
    border-top-left-radius: 1.5rem;
    border-top-right-radius: 1.5rem;
}

.bg-light {
    background-color: #f8f9fa !important;
}

.rounded-4 {
    border-radius: 1.5rem !important;
}

.transition-transform {
    transition: transform 0.2s;
}