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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: url('background.jpg') no-repeat center center fixed;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(3px);
    z-index: 0;
}

.presentation-wrapper {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 2rem;
    width: 100%;
    max-width: 1200px;
    max-height: 90vh;
}

.main-title {
    color: #ffffff;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    text-align: center;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    letter-spacing: -0.02em;
    margin: 0 0 0.5rem 0;
}

.info-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    /* margin-bottom: 1.5rem; */
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
}

.info-bar .name {
    color: #ffffff;
    font-weight: 400;
    opacity: 0.9;
}

.divider {
    color: #ffffff;
    opacity: 0.5;
}

.inline-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: #ffffff;
    text-decoration: none;
    font-weight: 400;
    transition: all 0.3s ease;
    opacity: 0.9;
}

.inline-link:hover {
    opacity: 1;
    transform: translateY(-1px);
}

.inline-link svg {
    vertical-align: middle;
}

.video-container {
    position: relative;
    width: 100%;
    max-width: 900px;
    max-height: calc(90vh - 8rem);
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background-color: #000;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.play-button-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    z-index: 10;
    cursor: pointer;
    border-radius: 12px;
    transition: opacity 0.3s ease;
}

.play-button-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.play-button {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.play-button:hover {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 1);
}

.play-triangle {
    width: 0;
    height: 0;
    border-left: 24px solid #333;
    border-top: 16px solid transparent;
    border-bottom: 16px solid transparent;
    margin-left: 4px;
}

.video-container iframe,
.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 12px;
    object-fit: cover;
}

@supports not (aspect-ratio: 16 / 9) {
    .video-container {
        padding-bottom: 56.25%;
        height: 0;
        max-height: none;
    }
}

@media (max-width: 768px) {
    .presentation-wrapper {
        gap: 0.5rem;
        padding: 1rem;
    }
    
    .main-title {
        font-size: clamp(1.5rem, 5vw, 2.5rem);
        margin-bottom: 0.3rem;
    }
    
    .info-bar {
        font-size: clamp(0.8rem, 2vw, 1rem);
        gap: 0.75rem;
        /* margin-bottom: 1rem; */
        flex-wrap: wrap;
    }
    
    .inline-link svg {
        width: 14px;
        height: 14px;
    }
    
    .video-container {
        border-radius: 8px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    }
    
    .video-container iframe,
    .video-container video {
        border-radius: 8px;
    }
}