:root {
    --color-bg-darkest: rgb(23, 23, 23);
    --color-bg-even-darker: rgb(163, 163, 163);
    --color-bg-darker: rgb(212, 212, 212);
    --color-bg-dark: rgb(229, 229, 229);
    --color-bg-light: rgb(245, 245, 245);
    --color-bg-lightest: rgb(250, 250, 250);
    --color-border-default: rgb(229, 229, 229);
}

* {
    margin: 0;
    padding: 0;
}

body {
    display: flex;
    flex-direction: column;
    width: 100vw;
    height: 100vh;
    background-color: var(--color-bg-lightest);
    overflow: hidden;
    font-family: sans-serif;
}

header {
    height: 55px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
    background-color: white;
    border-bottom: 1px solid var(--color-border-default);
}

header nav {
    width: 96px;
    height: 24px;
    background-color: var(--color-bg-darkest);
    border-radius: 4px;
}

header section {
    width: 40%;
    height: 35px;
    background-color: var(--color-bg-light);
    border-radius: 30px;
}

header menu {
    display: flex;
    flex-direction: row;
    gap: 15px;
}

header menu li {
    list-style: none;
    width: 32px;
    height: 32px;
    background-color: var(--color-bg-dark);
    border-radius: 4px;
}

header menu li:last-child {
    border-radius: 50%;
}

#layout_container {
    display: flex;
    flex-direction: row;
    width: 100%;
    height: calc(100vh - 60px);
    overflow: hidden;
}

main {
    flex: 1;
    height: 100%;
    overflow-y: scroll;
    padding-top: 24px;
    padding-left: 24px;
    padding-right: 24px;
}

#video_player {
    width: 100%;
    aspect-ratio: 16/9;
    background-color: var(--color-bg-darkest);
    border-radius: 12px;
}

#channel_info {
    padding: 16px 0;
}

#channel_info h1 {
    width: 576px;
    height: 24px;
    background-color: var(--color-bg-darker);
    border-radius: 4px;
    margin-bottom: 16px;
}

#channel_row {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
}

#channel_left {
    display: flex;
    flex-direction: row;
    gap: 12px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-bg-darker);
}

.channel_text {
    width: 128px;
    height: 16px;
    background-color: var(--color-bg-dark);
    border-radius: 4px;
}

.subscribe_btn {
    width: 112px;
    height: 36px;
    background-color: var(--color-bg-darkest);
    border-radius: 18px;
    margin-left: 24px;
}

#channel_right {
    display: flex;
    flex-direction: row;
    gap: 8px;
}

#video_info {
    height: 40px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    background-color: var(--color-bg-dark);
    padding: 16px;
    border-radius: 10px;
}

.views {
    width: 192px;
    height: 16px;
    background-color: var(--color-bg-darker);
    border-radius: 4px;
}

.video-description {
    width: 100%;
    height: 16px;
    background-color: var(--color-bg-darker);
    border-radius: 4px;
}

.action_btn {
    height: 36px;
    background-color: var(--color-bg-dark);
    border-radius: 18px;
}
.action_btn:nth-child(1) {
    width: 96px;
}
.action_btn:nth-child(2) {
    width: 80px;
}
.action_btn:nth-child(3) {
    width: 36px;
    border-radius: 50%;
}

aside {
    width: 400px;
    height: 100%;
    overflow-y: scroll;
    padding-top: 24px;
    padding-right: 24px;
}

aside ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

aside li {
    list-style: none;
    display: flex;
    flex-direction: row;
    gap: 8px;
}

.rec_thumb {
    width: 160px;
    height: 96px;
    background-color: var(--color-bg-dark);
    border-radius: 8px;
    flex-shrink: 0;
}

.rec_info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-top: 4px;
}

.rec_title {
    width: 216px;
    height: 16px;
    background-color: var(--color-bg-dark);
    border-radius: 4px;
}

.rec_meta {
    width: 162px;
    height: 16px;
    background-color: var(--color-bg-dark);
    border-radius: 4px;
}