html {
    text-rendering: optimizeLegibility;
}

@font-face {
    font-family: 'googlesans-bold';
    src: url('fonts/google-sans/GoogleSans-Bold.ttf') format('truetype');
}
@font-face {
    font-family: 'googlesans-italic';
    src: url('fonts/google-sans/GoogleSans-Italic.ttf') format('truetype');
}

@font-face {
    font-family: 'googlesans-regular';
    src: url('fonts/google-sans/GoogleSans-Regular.ttf') format('truetype');
}

@font-face {
    font-family: 'noto-sans-bold';
    src: url('fonts/noto-sans/NotoSans-Bold.ttf') format('truetype');
}

@font-face {
    font-family: 'noto-sans-italic';
    src: url('fonts/noto-sans/NotoSans-Italic.ttf') format('truetype');
}

@font-face {
    font-family: 'noto-sans-regular';
    src: url('fonts/noto-sans/NotoSans-Regular.ttf') format('truetype');
}

body {
    font-family: 'noto-sans-regular', sans-serif;
    background-color: white;
}

h1 {    
    font-family: 'googlesans-regular', sans-serif;
    font-size: 3em;
    color: #363636;
    text-align: center;
    margin-bottom: 1.5em;
    word-break: break-word;
    margin: 0;
    padding: 0;
    box-sizing: inherit;
    padding-top: 4rem;
}

h2 {
    font-family: 'noto-sans-regular', sans-serif;
    font-size: 2em;
    color: #363636;
    text-align: center;
}

h3 {
    font-family: 'googlesans-regular', sans-serif;
    font-size: 1.25em;
    color: #4a4a4a;
    text-align: center;
}

h4 {
    font-family: 'googlesans-regular', sans-serif;
    font-size: 1em;
    color: #4a4a4a;
    text-align: center;
    margin: 0.5em 0;
}

h5 {
    font-family: 'noto-sans-regular', sans-serif;
    font-size: 2em;
    color: #363636;
    text-align: left;
    margin: 0;
}

h6 {
    font-family: 'noto-sans-regular', sans-serif;
    font-size: 1.5em;
    color: #363636;
    text-align: left;
    margin: 0;
    padding-top: 0.75em;
    padding-bottom: 0.25em;
}

.no-underline {
  text-decoration: none;
  color: hsl(204, 86%, 53%);
}

.section {
    padding: 3rem 1.5rem;
    display: block;
    box-sizing: inherit;
    flex-grow: 1;
    flex-shrink: 0;
    padding-top: 0;
}

.content {
    font-family: 'noto-sans-regular', sans-serif;
    font-size: 1em;
    color:#4a4a4a;
    text-align: justify;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0;
}

.links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 2em;
    align-items: center;
    gap: 0.5em;
}

.button {
    padding: 0.5em 1.25em;
    margin: 0;
    border-radius: 30px;
    cursor: pointer;
    background-color: #2f2f2f;
    border-color: transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.button-text {
    text-decoration: none;
    font-family: 'googlesans-regular', sans-serif;
    font-size: 1em;
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5em;
}

.button-icon {
    width: 1.5em;
    height: 1.5em;
    display: inline-block;
}

.abstract {
    font-family: 'noto-sans-regular', sans-serif;
    font-size: 1em;
    color:#4a4a4a;
    text-align: justify;
    max-width: 800px;
    margin: 0 auto;
    padding: 0;
}

.footer {
    background-color: #fafafa;
    padding: 3rem 1.5rem 4rem;
    text-align: center;
}

.footer-content {
    font-family: 'noto-sans-regular', sans-serif;
    font-size: 1em;
    color:#4a4a4a;
    text-align: left;
    max-width: 900px;
    margin: 0 auto;
    padding: 0;
}

.no-underline-ft {
    text-decoration: none;
    color: #ff6093;
}

.youtube-video {
    width: 100%;
    aspect-ratio: 16 / 9;
    border: none;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-top: 2em;
}

.image {
    width: 100%;
    height: auto;
    object-fit: contain;
    border: none;
    margin: 1em 0;
}

.related-links-container {
    margin: 2em 0;
}

.related-links {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 0.5em;
    padding: 1em 0;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    border-bottom: 1px solid #f2f2f2;
}

.related-links p {
    margin: 0;
}

.related-links h3 {
    margin-bottom: 0.5em;
    margin-top: 0;
}
.video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75em;
    margin-bottom: 2em;
}

.video-grid-4col {
    grid-template-columns: repeat(4, 1fr);
}

.video-cell {
    display: flex;
    flex-direction: column;
    gap: 0.3em;
}

.video-cell span {
    text-align: center;
    font-family: 'googlesans-bold', sans-serif;
    font-size: 0.85em;
    color: #555;
}

.video-cell video {
    width: 100%;
    height: 320px;
    object-fit: contain;
    border-radius: 6px;
    background: #111;
}

pre {
    background: #f1f1f1;
    color: #1a1a1a;
    border-radius: 6px;
    padding: 1em 1.25em;
    overflow-x: auto;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.85em;
    font-weight: 300;
    line-height: 1.6;
    margin: 0.75em 0 1.25em 0;
}

code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-weight: 300;
}

pre code {
    background: none;
    padding: 0;
}

.inline-code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-weight: 300;
    background: #f1f1f1;
    padding: 0.15em 0.45em;
    border-radius: 4px;
    font-size: 0.85em;
    color: #2d2d2d;
}

.tutorial-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1em 0 1.5em 0;
    font-size: 0.9em;
}

.tutorial-table th,
.tutorial-table td {
    padding: 0.55em 0.9em;
    border: 1px solid #e0e0e0;
    text-align: left;
    vertical-align: top;
}

.tutorial-table th {
    background: #f5f5f5;
    font-family: 'googlesans-bold', sans-serif;
}

.motion-label {
    font-family: 'googlesans-bold', sans-serif;
    font-size: 1.1em;
    color: #363636;
    margin: 1em 0 0.4em 0;
}

@media (max-width: 900px) {
    .video-grid-4col {
        grid-template-columns: repeat(2, 1fr);
    }
    .video-cell-empty {
        display: none;
    }
}

@media (max-width: 600px) {
    .video-grid {
        grid-template-columns: 1fr;
    }
    .video-grid-4col {
        grid-template-columns: 1fr;
    }
}