* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background: #f5f7fa;
    color: #333;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background-color: #2c3e50;
    color: #ecf0f1;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 2.8rem;
    margin-bottom: 0.25rem;
    letter-spacing: 2px;
}

header h3 {
    font-weight: 400;
    font-style: italic;
    color: #bdc3c7;
    margin-bottom: 1rem;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    padding: 2%;
}

nav ul li a {
    color: #ecf0f1;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: color 0.3s ease, border-bottom 0.3s ease;
    border-bottom: 2px solid transparent;
    padding-bottom: 3px;
}

nav ul li a:hover,
nav ul li a:focus {
    color: #3498db;
    border-bottom: 2px solid #3498db;
}

nav ul li:last-child a {
    display: inline-block;
}

main {
    flex: 1 0 auto;
    max-width: 900px;
    margin: 2rem auto 4rem;
    padding: 0 1.5rem;
}

section {
    background-color: white;
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: box-shadow 0.3s ease;
}

section:hover {
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #2c3e50;
    border-bottom: 3px solid #3498db;
    padding-bottom: 0.3rem;
}

section p {
    font-size: 1.1rem;
    color: #555;
}

footer {
    background-color: #2c3e50;
    color: #bdc3c7;
    text-align: center;
    padding: 1rem 1.5rem;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.header-1 {
    background-color: #3a5067;
    padding: 3%;
}

.about-container {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.about-photo {
    width: 30%;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    flex-shrink: 0;
}

.about-container p {
    flex: 1;
    font-size: 1.1rem;
    color: #555;
    line-height: 1.5;
}

.video-gallery {
    display: flex;
    gap: 1rem;
    justify-content: flex-start;
    flex-wrap: wrap;
    max-width: 1100px;
    margin-left: 0;
}

.video-container {
    position: relative;
    width: 80%;
    height: 22.5%;
    padding-top: 56.25%;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    overflow: hidden;
}

.video-container-2 {
    position: relative;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    overflow: hidden;
}

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

.social-links {
    margin-top: 10px;
}

.social-links a {
    color: #ecf0f1;
    margin-right: 15px;
    font-size: 1.5rem;
    text-decoration: none;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #3498db;
}

@media (max-width: 600px) {
    header h1 {
        font-size: 2rem;
    }

    nav ul {
        flex-direction: column;
        gap: 1rem;
    }

    main {
        margin: 1rem;
        padding: 1rem;
    }
}