body {
  margin: 0;
  font-family: var(--font-family);
}

:root {
  --height: 60px;
  --font-family: "Libre Franklin";
  --background: black;
  --font-size-h1-big: 50px;
  --padding: 50px 120px 75px;
  --padding-footer: 50px 120px 0;
}

.topnav {
  background-color: var(--background);
  height: var(--height);
  position: relative;
  padding: 20px 100px 30px;
}

.left-part-nav {
  float: left;
  align-items: center;
  height: 100%;
  justify-content: center;
  display: flex;
  gap: 20px;
}

.middle-part-nav {
  float: right;
  display: flex;
  position: relative;
  left: -50%;
  text-align: left;
  align-items: center;
  height: 100%;
  justify-content: center;
}

.right-part-nav {
  float: right;
  display: flex;
  justify-content: space-between;
  gap: 30px;
  text-align: center;
  align-items: center;
  height: 100%;
}

.left-part-nav a {
  color: #f2f2f2;
  text-align: center;
  text-decoration: none;
  font-size: 20px;
  padding: 10px 20px 10px;
  font-weight: bold;
  border-radius: 5px;
}

.left-part-nav a:hover {
  background-color: #ddd;
  color: black;
}

.banner {
  display: flex;
  flex-direction: row;
  padding: 120px;
  gap: 30px;
  background-color: var(--background);
  justify-content: space-between;
  flex-wrap: wrap;
}

.banner .left-part {
  font-family: var(--font-family);
  color: white;
  flex: 2 1 0;
}

.banner .right-part {
  flex: 1 1 0;
}

.banner .left-part h1 {
  font-family: var(--font-family);
  font-size: 55px;
  font-weight: bold;
  line-height: 70px;
}

.banner .left-part p {
  font-family: var(--font-family);
  font-style: normal;
  font-weight: 400;
  font-size: 25px;
  line-height: 39px;
}

.banner .left-part a {
  font-family: "Libre Franklin";
  font-style: normal;
  font-weight: 700;
  font-size: 20px;
  line-height: 30px;
  background-color: white;
  color: black;
  text-decoration: none;
  padding: 10px 20px 10px;
  border-radius: 5px;
}

.banner .left-part i {
  margin-left: 20px;
}

.banner .left-part a:hover {
  background-color: #2c3333;
  color: #ecf2ff;
  transform: translateY(-5px);
}

.ability-section {
  background-color: var(--background);
  padding: 120px 120px 0;
}

.inside-ability-section {
  border: 1px solid #ffffff;
  border-radius: 10px;
  display: flex;
  justify-content: space-between;
  flex-direction: row;
  padding: 61px 32px 72px;
  flex-wrap: wrap;
  gap: 40px 20px;
  align-items: center;
}

.small-skill-section {
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  gap: 30px;
}
.small-skill-section h3 {
  text-decoration: none;
  padding: 30px;
  text-align: center;
  /* border: 1px solid #ffffff; */
  border-radius: 10px;
  font-size: 30px;
  font-weight: bold;
  cursor: auto;
}
.small-skill-section img {
  border-radius: 50%;
}

.experiences-section {
  background-color: black;
  color: white;
  padding: var(--padding);
  display: flex;
  flex-direction: column;
  gap: 50px;
}

.experiences-section h1,
#skill h1,
#personal-project h1,
#awards h1 {
  font-size: var(--font-size-h1-big);
  font-weight: bold;
  color: white;
  margin: 0;
}

#vietalk-experience,
#sta-experience {
  display: flex;
  flex-direction: row;
  gap: 100px;
}

.work-experience-left {
  display: flex;
  flex-direction: column;
  border: 1px solid white;
  padding: 20px 30px 100px;
}

.work-experience-left h2 {
  font-size: 40px;
  text-align: center;
  font-weight: bold;
  margin: 5px 0 5px;
}

.work-experience-left h3 {
  font-size: 25px;
  text-align: center;
  font-weight: bold;
  margin: 5px 0 5px;
}

.work-experience-left li {
  font-size: 20px;
  margin-top: 30px;
  line-height: 35px;
}

.work-experience-right {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.sta-experience-right-cover {
  background-image: url("images/sta.png");
  min-height: 368px;
  display: flex;
  /* min-width: 867px; */
  background-repeat: no-repeat;
  background-size: center center;
}

.vietalk-experience-right-cover {
  background-image: url("images/vietalk-bg-img-2.png");
  min-height: 368px;
  background-size: cover;
  display: flex;
  background-repeat: no-repeat;
  background-size: center center;
  /* min-width: 867px; */
}

.work-experience-right-cover_logo-text {
  display: flex;
  align-items: flex-end;
  gap: 30px;
  margin-left: 30px;
  margin-bottom: 20px;
}

.work-experience-right-cover_logo-text .inside-cover-logo-text {
  display: flex;
  background-color: white;
  color: black;
  padding: 20px;
  align-items: center;
  gap: 15px;
  border-radius: 5px;
}

.work-experience-right_project {
  border: 1px solid white;
  padding: 10px 30px 20px;
}

.work-experience-right_project h2 {
  font-size: 40px;
  font-weight: bold;
}

.work-experience-right_project-tag {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 10px;
}

.work-experience-right_project p {
  font-weight: 400;
  font-size: 20px;
  line-height: 30px;
}
.work-experience-right_project a {
  font-weight: 400;
  font-size: 17px;
  line-height: 30px;
  text-decoration: none;
  color: white;
  padding: 5px 7.5px 5px;
  border-radius: 5px;
}

.tag-1 {
  background-color: #bf5700;
}
.tag-2 {
  background-color: #0a5b9f;
}
.tag-3 {
  background-color: #ff8b13;
}

.tag-4 {
  background-color: #13005a;
}

.tag-5 {
  background-color: #0f4d92;
}

/* .work-experience,
.personal-project-section-outside {
  display: none;
} */

/* CSS for button*/
#sta-experience-button,
#vietalk-experience-button,
#get-done-task-button {
  border-radius: 8px;
  border-style: none;
  box-sizing: border-box;
  cursor: pointer;
  display: inline-block;
  font-size: 20px;
  font-weight: 500;
  list-style: none;
  margin: 0;
  outline: none;
  padding: 5px 35px;
  position: relative;
  text-align: left;
  text-decoration: none;
  transition: color 100ms;
  vertical-align: baseline;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  background-color: #03001c;
  color: white;
  border: 1px solid white;
}

#sta-experience-button:hover,
#vietalk-experience-button:hover,
#get-done-task-button:hover,
#sta-experience-button:focus,
#vietalk-experience-button:focus,
#get-done-task-button:focus {
  /* background-color: #03001c;
  color: white;
  border: 1px solid white; */
  background-color: white;
  color: black;
  border: 1px solid white;
}

#personal-project {
  padding: var(--padding);
  background-color: var(--background);
  display: flex;
  flex-direction: column;
  gap: 50px;
}

#personal-project-section-outside {
  padding: 20px 50px 50px;
  border: 1px solid white;
  color: white;
}
.personal-project-section {
  background-color: var(--background);
  color: white;
  display: flex;
  flex-direction: row;
  justify-content: space-evenly;
  gap: 100px;
}

.personal-project-section img {
  border-radius: 5px;
  max-width: 300px;
}
.personal-project-section h1 {
  font-size: var(--font-size-h1-big);
  font-weight: bold;
}

.project-left-part {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  padding-right: 10px;
}

.project-left-part h4 {
  font-size: 22px;
  text-decoration: underline;
  text-underline-offset: 15px;
  line-height: 60px;
}

.personal-project-tag {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.personal-project-tag a {
  background-color: white;
  color: black;
  font-weight: 600;
  font-size: 17px;
  line-height: 30px;
  text-decoration: none;
  padding: 10px;
  border-radius: 5px;
  margin: 0 10px 20px 10px;
}

.personal-project-tag a:hover,
.work-experience-right_project-tag a:hover {
  transform: translateY(-5px);
  -webkit-transform: translateY(-5px);
  /* box-shadow: 0px 3px 0px 1px #d5b4b4; */
  transition: all 0.2s ease;
}

.project-left-part li {
  font-size: 20px;
  margin-top: 30px;
  line-height: 35px;
}

.project-right-part {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  gap: 100px;
}

.extra-info-img {
  display: flex;
}

/* .project-right-part img {
  margin-bottom: 100px;
} */

#skill {
  background-color: var(--background);
  color: white;
  padding: var(--padding);
}

.skill-logo {
  display: flex;
  flex-wrap: wrap;
  background-color: var(--background);
  flex-direction: row;
  justify-content: space-between;
  align-items: flex-start;
  gap: 75px 40px;
  margin-top: 40px;
}

.skill-logo img {
  height: 100px;
  width: auto;
}

#awards {
  background-color: var(--background);
  padding: var(--padding);
  color: white;
  display: flex;
  flex-direction: column;
  gap: 50px;
}

.awards-section {
  display: flex;
  flex-direction: row;
  justify-content: center;
  gap: 75px;
  text-align: center;
  flex-wrap: wrap;
}
.awards-section img {
  width: auto;
  height: 100px;
}

#footer {
  background-color: var(--background);
  display: flex;
  padding: var(--padding-footer);
}

.footer-left {
  display: flex;
  flex: 1 1 0;
}
.footer-right {
  flex: 1 1 0;
  display: flex;
  align-items: center;
}

.quote {
  background-color: #fefcf3;
  color: black;
  padding: 10px 15px 5px;
  border-radius: 10px;
}

.quote h4 {
  display: flex;
  padding: 0 10px;
  font-weight: 600;
  font-size: 17px;
}
.quote h5 {
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  font-weight: 600;
  font-size: 15px;
}

.is-hidden {
  display: none;
}

/* #sta-experience {
  display: none;
} */

#sta-experience,
#vietalk-experience,
#personal-project-section-outside {
  opacity: 0;
  height: 0;
  transition: all 0.2s ease-in;
  overflow: hidden;
}

/* #sta-experience,
.vietalk-experience,
.personal-project-section-outside {
  display: none;
} */

@media only screen and (min-width: 1500px) {
  .topnav {
    padding: 20px 200px 30px;
  }
  .banner,
  .ability-section,
  .experiences-section,
  #personal-project,
  #skill,
  #awards,
  #footer {
    padding: 20px 220px 30px;
  }
}

@media only screen and (min-width: 2200px) {
  .topnav {
    padding: 20px 250px 30px;
  }
  .banner,
  .ability-section,
  .experiences-section,
  #personal-project,
  #skill,
  #awards,
  #footer {
    padding: 20px 270px 30px;
  }
}

@media only screen and (max-width: 1100px) {
  #sta-experience,
  #vietalk-experience {
    flex-direction: column-reverse;
  }
  #personal-project-section {
    flex-direction: column;
  }
}

@media screen and (max-width: 1100px) {
  .inside-ability-section,
  .personal-project-section {
    justify-content: center;
    flex-direction: column;
  }
  #footer {
    flex-direction: column-reverse;
  }
}

/* Media Query for low resolution  Tablets, Ipads */
@media (min-width: 600px) and (max-width: 1100px) {
  .middle-part-nav {
    left: revert;
    text-align: left;
    justify-content: left;
  }
  .right-part-nav {
    display: none;
  }

  .project-right-part {
    flex-direction: row;
    gap: 50px;
    flex-wrap: wrap;
  }
}

/* mobile screen */

@media only screen and (max-width: 650px) {
  .topnav,
  #banner,
  .ability-section,
  .experiences-section,
  #personal-project,
  #skill,
  #awards,
  #footer {
    padding: 20px 50px 20px;
  }

  #banner {
    flex-direction: column;
  }
  .middle-part-nav {
    left: revert;
    text-align: left;
    justify-content: left;
  }
  .right-part-nav {
    display: none;
  }

  #banner img {
    width: 300px;
  }
  #banner h1 {
    font-size: 20px;
    line-height: 30px;
  }
  #banner p {
    font-size: 15px;
    line-height: 30px;
    margin-bottom: 20px;
  }

  .banner .left-part a {
    font-size: 15px;
  }

  .inside-ability-section img {
    width: 200px;
  }
  .inside-ability-section a {
    font-size: 20px;
  }
  /* .experiences-section h4 {
    line-height: 40px;
  } */

  #personal-project-section-outside {
    padding: 20px 15px 20px;
  }
  #personal-project-section-outside img {
    width: 200px;
  }
  /* .project-right-part img,
  .extra-info img {
    margin-bottom: 30px;
  } */

  .extra-info-img {
    gap: 30px;
    flex-direction: column;
  }

  .project-right-part {
    gap: 30px;
  }

  #awards img {
    width: 300px;
    height: auto;
  }

  .skill-logo {
    gap: 35px 25px;
  }

  #sta-experience-button,
  #vietalk-experience-button,
  #get-done-task-button {
    font-size: 15px;
    line-height: 30px;
  }
}