body {
    font-family: 'Noto Sans', sans-serif;
    background-color: #f9fafb;
    color: #1f2937;
}
h1, h2, h3 {
    font-family: 'Noto Serif', serif;
}
.gradient-text {
    background: linear-gradient(to right, #2563eb, #7c3aed);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: 0.5rem;
}
.video-container iframe, .video-container video, .video-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.video-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    color: #6b7280;
}
.teaser-caption {
    font-size: 0.9rem;
    color: #4b5563;
    margin-top: 0.5rem;
    text-align: center;
}
.btn-link {
    transition: all 0.2s;
}
.btn-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}
.bibtex-box {
    background-color: #f3f4f6;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    padding: 1rem;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.85rem;
    overflow-x: auto;
    white-space: pre;
}