*, *::before, *::after {
box-sizing: border-box;
font-family: Roboto, Arial, Helvetica, sans-serif;
}

body {
margin: 0;
}

.video-section {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
gap: 3rem 1rem;
padding: 3rem 0;
margin: 0 1.5rem;
border-top: 4px solid #CCC;
}

.video-section:first-child {
border-top: none;
}

.video-container {
display: flex;
flex-direction: column;
}

.thumbnail {
position: relative;
display: flex;
}

.thumbnail::before {
content: attr(data-duration);
position: absolute;
background-color: rgba(0, 0, 0, .85);
color: white;
right: 5px;
bottom: 5px;
padding: .1em .3em;
border-radius: .3em;
font-size: .9rem;
}

.thumbnail-image {
width: 100%;
height: 100%;
min-width: 250px;
min-height: 150px;
background-color: #AAA;
}

.video-bottom-section {
display: flex;
align-items: flex-start;
margin-top: 1rem;
}

.channel-icon {
margin-right: .75rem;
border-radius: 50%;
width: 36px;
height: 36px;
background-color: #AAA;
}

.video-details {
display: flex;
flex-direction: column;
}

.video-title {
font-size: 1.1rem;
font-weight: bold;
margin-bottom: .5rem;
text-decoration: none;
color: black;
}

.video-channel-name {
margin-bottom: .1rem;
text-decoration: none;
transition: color 150ms;
}

.video-channel-name:hover {
color: #111;
}

.video-channel-name,
.video-metadata {
color: #555;
}

.video-section-title {
grid-column: 1 / -1;
margin: -.5rem 0;
display: flex;
justify-content: space-between;
align-items: center;
padding: 0 .5rem;
}

.video-section-title-close {
border: none;
background: none;
padding: 0;
font-size: 2rem;
color: #555;
cursor: pointer;
}

.videos {
background-color: #F9F9F9;
}

.categories {
padding: 1rem 2rem;
border-top: 1px solid #999;
border-bottom: 1px solid #999;
}

.category-section {
display: flex;
overflow: hidden;
}

.category {
margin-right: 1rem;
word-wrap: none;
white-space: nowrap;
border: 1px solid #CCC;
border-radius: 900px;
background-color: #E7E7E7;
padding: .5rem 1rem;
font-size: inherit;
cursor: pointer;
transition: background-color 150ms;
}

.category:hover {
background-color: #DDD;
}

.category.active {
background-color: #606060;
color: white;
border-color: #EEE;
}

.category:last-child {
margin-right: 0;
}

.header {
display: flex;
justify-content: space-between;
align-items: center;
padding: 1rem;
}

.youtube-logo {
height: 20px;
}

.search-bar {
display: flex;
flex-grow: 1;
margin: 0 2rem 0 4rem;
}

.search-input {
width: 100%;
font-size: inherit;
padding: .4em;
border: 1px solid #777;
border-top-right-radius: 0;
border-bottom-right-radius: 0;
}

.search-btn {
display: flex;
align-items: center;
padding: 0 1.25rem;
border: 1px solid #777;
background-color: #F8F8F8;
border-left: none;
border-top-left-radius: 0;
border-bottom-left-radius: 0;
cursor: pointer;
}

.search-btn:hover {
background-color: #F0F0F0;
}

.menu-icons {
display: grid;
grid-template-columns: repeat(4, auto);
align-items: center;
gap: 1.5rem;
}

.menu-channel-icon {
border-radius: 50%;
width: 36px;
height: 36px;
background-color: #AAA;
}