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

body {
  margin: 0;
}

.main-container {
  display: flex;
}

.video-container {
  width: calc(95% - 80px);
}

.videos {
  display: flex;
  flex-direction: column;
}

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

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

.video-section-title {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: -2rem;
}

.video-section-close-btn {
  background: none;
  border: none;
  border-radius: 50%;
  width: 3rem;
  height: 3rem;
  font-size: 1.5em;
  cursor: pointer;
  transition: background-color 0.2s ease-in-out;
}

.video-section-close-btn:hover {
  background-color: hsla(0, 0%, 0%, 0.1);
}
.thumbnail {
  position: relative;
  display: flex;
  border-radius: 10px;
  overflow: hidden;
}

.thumbnail::before {
  content: attr(data-duration);
  position: absolute;
  background-color: rgba(0, 0, 0, 0.8);
  right: 5px;
  bottom: 5px;
  color: white;
  padding: 0.2rem;
  border-radius: 5px;
  font-size: 0.9em;
}

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

.video-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-top: 0.5rem;
}

.channel-image,
.user-icon {
  min-width: 36px;
  min-height: 36px;
  border-radius: 50%;
  background-color: #bbb;
}

.video-details {
  margin-left: 0.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.video-title {
  font-size: 1.2em;
  color: black;
  text-decoration: none;
  margin-bottom: 0.2em;
}

.channel-name,
.video-stats {
  font-size: 0.9em;
  color: #616161;
  text-decoration: none;
}

.channel-name:hover {
  color: #2e2e2e;
}

.video-options {
  width: 24px;
}

.categories {
  margin: 1rem;
  display: flex;
  white-space: nowrap;
  overflow-x: scroll;
}

.category {
  border: none;
  background-color: hsla(0, 0%, 0%, 0.05);
  margin-right: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: inherit;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: background-color 0.2s ease-in-out;
}

.category:not(.active):hover {
  background-color: hsla(0, 0%, 0%, 0.1);
}

.active {
  background-color: black;
  color: white;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 1rem;
  width: 90%;
}

.menu-btn {
  margin-left: 0.5rem;
  margin-right: 1rem;
  z-index: 3;
  border-radius: 50%;
  padding: 0.5rem;
  transition: background-color 0.2s ease-in-out;
}

.menu-btn:hover {
  background-color: hsla(0, 0%, 0%, 0.1);
}

.menu-btn > input {
  display: none;
}

.collapsed-sidebar {
  display: flex;
  flex-direction: column;
  margin-left: 0.1rem;
}

.collapsed-sidebar > button {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  border: none;
  border-radius: 10px;
  background-color: white;
  width: 5rem;
  height: 5rem;
  transition: background-color 0.2s ease-in-out;
  font-size: 0.7em;
}

.collapsed-sidebar > button:hover {
  background-color: hsla(0, 0%, 0%, 0.1);
}

.expanded-sidebar {
  position: absolute;
  display: flex;
  flex-direction: column;
  padding-top: 5rem;
  width: 250px;
  min-height: 150vh;
  top: 0;
  left: -100%;
  z-index: 2;
  background-color: white;
}

.menu-btn:has(input:checked) + .expanded-sidebar {
  left: 0;
}

.expanded-sidebar > button {
  border: none;
  background-color: white;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 1rem;
  margin: 0 1rem;
  padding: 0.5rem 1rem;
  border-radius: 10px;
  transition: background-color 0.2s ease-in-out;
}

.expanded-sidebar > button:hover {
  background-color: hsla(0, 0%, 0%, 0.1);
}

.youtube-logo {
  z-index: 3;
}

.youtube-logo,
.icons {
  height: 1.5rem;
}

.search-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-grow: 1;
}

.search-input {
  padding: 0 1rem;
  border: 1px solid #aaa;
  border-top-left-radius: 999px;
  border-bottom-left-radius: 999px;
  font-size: inherit;
  min-height: 3rem;
  max-width: 30%;
  flex-grow: 1;
}

.search-input:focus {
  border-color: #069;
  outline: none;
}

.search-btn {
  width: 4rem;
  height: 3rem;
  border: 1px solid #aaa;
  border-left: none;
  border-top-right-radius: 999px;
  border-bottom-right-radius: 999px;
}

.voice-search {
  border: none;
  border-radius: 50%;
  width: 3rem;
  height: 3rem;
  margin-left: 1rem;
}

.search-btn,
.voice-search {
  background-color: hsla(0, 0%, 0%, 0.05);
  transition: background-color 0.2s ease-in-out;
}

.search-btn:hover,
.voice-search:hover {
  background-color: hsla(0, 0%, 0%, 0.1);
}

.user-options {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}

.user-options > button {
  border: none;
  border-radius: 50%;
  width: 3rem;
  height: 3rem;
  background-color: white;
  transition: background-color 0.2s ease-in-out;
}

.user-options > button:hover {
  background-color: hsla(0, 0%, 0%, 0.1);
}

.notification-btn {
  position: relative;
}

.notification-btn::before {
  content: "9+";
  position: absolute;
  background-color: hsl(0, 100%, 40%);
  color: white;
  top: 10%;
  left: 50%;
  border-radius: 999px;
  padding: 0.1rem 0.3rem;
}

.user-icon {
  cursor: pointer;
}

@media (max-width: 770px) {
  .search-bar {
    justify-content: flex-end;
    margin-right: 1rem;
  }

  .search-input {
    display: none;
  }

  .search-btn {
    border: none;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
  }

  .search-btn,
  .voice-search {
    background-color: white;
  }

  .search-btn:hover,
  .voice-search:hover {
    background-color: hsla(0, 0%, 0%, 0.1);
  }
}

@media (max-width: 550px) {
  .video-container {
    width: 100%;
  }

  .collapsed-sidebar {
    display: none;
  }

  .voice-search,
  .notification-btn {
    display: none;
  }
}