/* ============= root styles ============== */
html {
  font-family: Roboto, Arial, Montserrat, Rubik;
  font-size: 100%;
}
body {
  background-color: var(--background);
  color: var(--text);
  padding: 0.3125rem;
  padding-left: 0.5rem;
  margin: 0px;
  box-shadow: 0px 0px 6px rgba(0, 0, 0, 0.6) inset;
  padding-top: 3rem;
  position: relative;
  padding-bottom: 3rem;
}
main {
  padding-left: 0.2rem;
}

a {
  cursor: pointer;
  color: var(--text);
  text-decoration: none;
  
}

button:active {
  opacity: 0.3;
  
}

/* ============= root styles ============== */

:root {

  --background: #222;
  --text: white;
  --border: rgb(100, 100, 100);
  --header: rgba(32, 32, 32, 0.94);
  --glow: rgba(255, 255, 255, 0.5);
  --secondary-clr: rgb(255, 255, 255);
  --link: rgba(255, 255, 255, 0.5);
}

/* ============= text/size ============== */

p {
  font-size: clamp(1rem, 1.5rem, 3.5rem);
  margin: 0.4rem 0rem;
  transition: font-size 0.1s;
}

h1 {
  font-size: 2em;
  margin: 0.8rem 0rem;
  font-family: Rubik;
}

.size1 {
  font-size: 1.5rem;
}
.text-decoration {
  text-decoration: underline;
  font-family: Rubik;
}

.spacing {
 line-height: 2.2rem;
}

/* ================= Images ==================== */

.emoji {
  height: 1.5rem;
  margin-left: -0.2rem;
  cursor: text;
}
.icon {
  height: 1.5em;
  margin-right: 0.2em;
}
.icon--2 {
  height: 2em;
}
.icon:hover {
  filter: drop-shadow(0 0 0.2em rgba(0, 0, 0, 0.5));
  cursor: pointer;
}
.profile-picture {
  width: 2.5em;
  height: 2.5em;
  object-fit: cover;
  border-radius: 2.5em;
}

/* ================ List alignment ================ */

.list {
  list-style: none; /* remove default list */
  padding: 0;
  margin: 0;
  margin-top: 0.8rem;
}
.list__symbol {
  display: flex;
  align-items: center; /* vertical alignment */
  gap: 0.5rem;
  position: relative;
  padding-left: 1rem;
  margin-bottom: 0.2rem;
  padding: 0;
}
.list__symbol::before {
  content: "•";
}

/* ================= Flexbox ==================== */

.alignment {
  display: flex;
  align-items: center;
}
.center {
  display: flex;
  justify-content: center;
}

.flex {
  display: flex;
  flex-direction: row;
}
.column {
  display: flex;
  flex-direction: column;
}
.flex-spaced {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}
.wrap {
  display: flex;
  flex-wrap: wrap;
}
/* ============= Space, Position, Margin and Padding ================ */

.margin0 {
  margin: 0px;
  margin-top: 10px; 
}
.absolute {
  position: absolute;
}
.fixed {
  position: fixed;
}
.relative {
  position: relative
}

.inline {
  display: inline-block;
  vertical-align: top;
}

/* ================ T e s t i n g ==================== */

.border {
  border: solid 1px var(--text);
}
.border-blue {
  border: solid 3px blue;
}
.border-red {
  border: solid 3px red;
}
.border-bottom {
  border-bottom: solid 1px var(--border);
  margin: 0px 10px;
}
.border-bottom--2 {

  padding-bottom: 2rem;
  border-bottom: solid 1px var(--border);
  
}
.border-top {
  border-top: solid 1px var(--border);
  margin: 0px 10px;
}


/* ===============--------- E F F E C T S ------================= */

.transition {
  transition:
  opacity 0.2s,
  box-shadow 0.3s,
  text-shadow 0.3s,
  filter 0.5s,
  width 0.3s;
}

#thumbnails, #videos, #learn {
  transition: opacity 0.3s;
}

.rounded-1 {
  border-radius: 0.2rem;
}

/* ================--- Media / Responsive Design ---============== */

@media (prefers-color-scheme: light) {
  :root {
    --background: white;
    --text: rgb(0, 0, 0);
    --header: rgba(255, 255, 255, 0.94);
    --glow: rgba(0, 0, 0, 0.5);
    --secondary-clr: rgb(0, 196, 42);
    --link: rgba(0, 81, 255, 0.8);
  }
  .header {
    margin: 0;
  }
  .header__icon {
    margin-left: 0.5rem;
  }

}




@media (min-width: 1200px) {
  /*  #introduction, #languages {
    zoom: 1.6; 
    
  } */
  html {
    font-size: 1.3rem;
  }
  header, .header {
    font-size: 16px;
  }
  .learning__text {
    margin-top: 1.5rem;
  }
}
@media (max-width: 999px) {
  
  p, .emoji, .spacing {
    font-size: 1.25em !important;
    line-height: 1.5em;
  }
  .profile-picture {
    height: 2em;
    width: 2em;
    
  }
  .header__icon {
    height: 1.5em;
  }
  
}
@media (max-width: 800px)   {
  .header__middle-section {
    opacity: 0;
  }
  #introduction {
    width: 700px;
  }
  
  #languages {
    border: none;
    margin-left: 0px;
  }
  .section__1 {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
  }
   h1 {
    font-size: 3.5rem;
    width: 25rem;
  }
  #introduction p {
    font-size: 2rem !important;
  }
  .learning__text {
    text-align: center;
    border-top: solid 1px var(--border);
    padding-top: 1rem;
    margin-top: 1.2rem;
    font-size: 1.5rem !important;
  }
}

@media (max-width: 700px) {
  .header__middle-section {
    display: none;
  }
 
}
@media (max-width: 650px) {
  .header__text {
    font-size: 1em !important;
  }
  .language__name {
    font-size: 1rem !important;
  }
}
@media (max-width:575px) {
 #thumbnails {
  opacity: 0;
 }
}

@media (max-width:550px) {
 #thumbnails {
  opacity: 0;
  display: none;
 }
}

@media (max-width:500px) {
 
  .tooltip {
    bottom: -2em;
  }
   #introduction p {
    font-size: 1.5rem !important;
  }
  #introduction {
    padding-left: 1rem;
  }
  
}

@media (max-width:465px) {
 #videos {
  opacity: 0;
 }
 .footer .column--2 {
  flex-direction: column;
  justify-content: center;
  row-gap: 0.3rem;
 }
 body {
  padding-bottom: 8rem;
 } 
}

@media (max-width:450px) {
 #videos {
  display: none;
 }

}

@media (max-width:415px) {
 #learn {
  opacity: 0;
 }

}

@media (max-width: 400px) {
  .header__left-section p {
    display: none;
  }
  .header__left-section {
    width: 30px;
  }
  h1 {
    font-size: 2rem;
    margin-bottom: 0.2rem;
    width: 20rem;
  }
}

@media (min-width: 0px) and (max-width: 320px) {

  p, .emoji, .spacing, li, div {
    font-size: 1em;
    line-height: 1.5em;
  }
  .language__text {
    font-size: 1em;
  }
  .language__icon {
    width: 2em;
    height: 2em;
  }
  h1 {
    line-height: 2rem;
  }
}