.header {
  height: 55px;

  display: flex;
  flex-direction: row; 
  justify-content: space-between;

  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;

  background-color: white;
  border-bottom-width: 1px;
  border-bottom-style: solid;
  border-bottom-color: rgb(228, 228, 228);
}


.left-section {
  display: flex;
  align-items: center;
}
.hamburger-menu {
  height: 24px;
  margin-left: 24px;
  margin-right: 24px;
}
.youtube-logo {
  height: 20px;
}

.middle-section {
  flex: 1;
  margin-left: 70px;
  margin-right: 35px;
  max-width: 500px;
  display: flex;
  align-items: center;
}
.search-bar {
  flex: 1;
  height: 36px;
  padding-left: 10px;
  font-size: 16px;
  border-width: 1px;
  border-style: solid;
  border-color: rgb(192, 192, 192);
  border-radius: 2px;
  box-shadow: inset 1px 2px 3px rgba(0, 0, 0, 0.05);
  width: 0;

}
.search-bar::placeholder {
  font-size: 16px; 
}
.search-button {
  height: 40px;
  width: 66px;
  background-color: rgb(240, 240, 240);
  border: 1px solid rgb(192, 192, 192);
  margin-left: -1px;
  margin-right: 10px;
}

.search-button, 
.voice-search-button, 
.upload-icon-container,
.youtube-apps-container,
.notifications-icon-container {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

 .search-button .tooltip,
 .voice-search-button .tooltip,
 .upload-icon-container .tooltip,
 .youtube-apps-container .tooltip,
 .notifications-icon-container .tooltip {
  position: absolute;
  background-color: gray;
  color: white;
  padding: 4px 8px 4px 8px; 
  border-radius: 2px;
  font-size: 12px;
  bottom: -30px;
  opacity: 0;
  transition: opacity 0.15s;
  pointer-events: none;
  white-space: nowrap;
}

.search-button:hover .tooltip,
.voice-search-button:hover .tooltip,
.upload-icon-container:hover .tooltip,
.youtube-apps-container:hover .tooltip,
.notifications-icon-container:hover .tooltip {
  opacity: 1; 
}

.search-icon {
  height: 25px;
}
.voice-search-button {
  height: 40px; 
  width: 40px;
  border-radius: 20px;
  border: none;
  background-color: rgb(245, 245, 245);
}
.voice-search-icon {
  height: 24px;
}

 .right-section {
  width: 180px;
  margin-right: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.upload-icon {
  height: 24px;
}

.youtube-apps-icon {
  height: 24px;
}

.notifications-icon {
  height: 24px;
}

.current-user-picture { 
  height: 37px;
  border-radius: 19px;
}

.notifications-icon-container {
  position: relative;
}

.notifications-count {
  position: absolute;
  top: -2px;
  right: -5px;
  background-color: rgb(199, 0, 0);
  color: white;
  font-size: 11px;
  padding: 2px 5px 2px 5px;
  border-radius: 10px;
}

/* mobile view*/
@media screen and (orientation: portrait) {
  .header {
    height: 100px;
  
    display: flex;
    flex-direction: row; 
    justify-content: space-between;
  
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
  
    background-color: white;
    border-bottom-width: 2px;
    border-bottom-style: solid;
    border-bottom-color: rgb(228, 228, 228);
  }

  .left-section {
    display: flex;
    align-items: center;
  }
  .hamburger-menu {
    margin-top: 7px;
    height: 40px;
    margin-left: 30px;
    margin-right: 30px;
  }
  .youtube-logo {
    height: 26.33px;
  }

  .middle-section {
    flex: 1;
    margin-left: 70px;
    margin-right: 35px;
    max-width: 500px;
    display: flex;
    align-items: center;
  }
  .search-bar {
    flex: 1;
    height: 45px;
    padding-left: 10px;
    font-size: 18px;
    border-width: 2px;
    border-style: solid;
    border-color: rgb(192, 192, 192);
    border-radius: 5px;
    box-shadow: inset 1px 2px 3px rgba(0, 0, 0, 0.05);
    width: 0;
  
  }
  .search-bar::placeholder {
    font-size: 18px; 
  }
  .search-button {
    height: 50.3px;
    width: 68px;
    background-color: rgb(240, 240, 240);
    border: 2px solid rgb(192, 192, 192);
    margin-left: -4px;
    margin-right: 15px;
  }

  .search-icon {
    height: 30px;
  }
  .voice-search-button {
    height: 50px; 
    width: 50px;
    border-radius: 25px;
    border: none;
    background-color: rgb(245, 245, 245);
  }
  .voice-search-icon {
    height: 29px;
  }

  .right-section {
    width: 190px;
    margin-right: 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
  }
  
  .upload-icon {
    height: 32px;
  }
  
  .youtube-apps-icon {
    height: 32px;
  }
  
  .notifications-icon {
    height: 32px;
  }
  
  .current-user-picture { 
    height: 45px;
    border-radius: 25px;
  }
  
  .notifications-icon-container {
    position: relative;
  }

  .notifications-count {
    position: absolute;
    top: -5px;
    right: -7px;
    background-color: rgb(199, 0, 0);
    color: white;
    font-size: 13px;
    padding: 3px 6px 3px 6px;
    border-radius: 20px;
  }
}