body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
}

header {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
    background-color: #f8f8f8;
    border-bottom: 1px solid #e7e7e7;
    height: 56px;
}

#search {
    flex-grow: 1;
    height: 30px;
    border: none;
    padding: 3px 6px;
    font-size: 16px;
    border-radius: 5px 0 0 5px;
    background-color: #f1f1f1;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.1);
}

#search-button {
    height: 32px;
    border: none;
    padding: 0 20px;
    font-size: 16px;
    background-color: #f8f8f8;
    color: #606060;
    cursor: pointer;
    border-radius: 0 5px 5px 0;
    box-shadow: 0 1px 0 rgba(0,0,0,0.1);
}

#search-button:hover {
    background-color: #f0f0f0;
}

body.dark-mode #search {
    background-color: #181818;
    color: #e8e8e8;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.1);
}

body.dark-mode #search-button {
    background-color: #313131;
    color: #e8e8e8;
    box-shadow: 0 1px 0 rgba(255,255,255,0.1);
}

body.dark-mode #search-button:hover {
    background-color: #383838;
}

#video-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 10px;
    padding: 10px;
}

.video {
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 1px 1px rgba(0,0,0,0.15);
    transition: transform 0.2s;
}

.video:hover {
    transform: scale(1.02);
}

.thumbnail {
    width: 100%;
    padding-bottom: 56.25%;
    position: relative;
}

.duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    padding: 2px 4px;
    background-color: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 12px;
    border-radius: 5px;
}

.channel, .views {
    padding: 0 10px;
    font-size: 14px;
    color: #606060;
}

.loading {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(to right, #eeeeee 1%, #dddddd 50%, #eeeeee 99%);
    animation: loading 1s infinite;
}

.title, .description {
    padding: 10px;
}

@keyframes loading {
    0% { background-position: -200px 0; }
    100% { background-position: calc(200px + 100%) 0; }
}

body.dark-mode {
    background-color: #181818;
    color: #e8e8e8;
}

body.dark-mode header {
    background-color: #282828;
    border-color: #383838;
}

body.dark-mode .video {
    background-color: #282828;
}

body.dark-mode .loading {
    background: linear-gradient(to right, #383838 1%, #282828 50%, #383838 99%);
}

body.dark-mode .channel, body.dark-mode .views {
    color: #909090;
}

.metadata, .actions {
    padding: 0 10px;
    font-size: 14px;
    color: #606060;
}

.actions button {
    background: none;
    border: none;
    padding: 10px;
    cursor: pointer;
    border-radius: 4px;
}

.actions button:hover {
    background-color: #f0f0f0;
}

body.dark-mode .metadata, body.dark-mode .actions {
    color: #909090;
}

body.dark-mode .actions button:hover {
    background-color: #383838;
}

body.dark-mode .actions button {
    color: #909090;
}