body {
  background: linear-gradient(49deg, #02aab0 11.85%, #00cdac 66.97%);
  height: 100vh;
}
.card {
  width: 80%;
  margin: 0 auto;
}
.logo img {
  width: 80px;
  height: auto;
  vertical-align: middle;
  margin-top:40px;
}

h1 {
  /* animation: flicker 1.5s infinite alternate; */
  color: rgb(0, 0, 0);
  font-family: "Open Sans", sans-serif;
  font-size: 50px;
  text-align: center;
  margin-top: 20px;
  margin-bottom: 20px;
  padding-top: 20px;
}

@keyframes flicker {

  0%,
  18%,
  22%,
  25%,
  53%,
  57%,
  100% {
    text-shadow: 0 0 4px rgb(0, 0, 0), 0 0 11px #fff, 0 0 19px #fff, 0 0 40px #0fa,
      0 0 80px #0fa, 0 0 90px #0fa, 0 0 100px #0fa, 0 0 150px #0fa;
  }

  20%,
  24%,
  55% {
    text-shadow: none;
  }
}
.header {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.logo {
  position: absolute;
  left: 0;
}

h1 {
  font-size: 40px;
  margin: 0;
  text-align: center;
}

.upload-files{
  display: flex;
  gap: 40px;
  margin-top: 20px;
  justify-content: center;
}

input[type="text"] {
  /* width: 80%; */
  padding: 12px 20px;
  margin: 5px 0;
  box-sizing: border-box;
  border: 2px solid #ccc;
  -webkit-transition: 0.5s;
  transition: 0.5s;
  outline: none;
  margin-left: 40px;
}

input[type="text"]:focus {
  border: 3px solid #555;
}

input[type="file"] {
  /* width: 40%; */
  padding: 12px 20px;
  box-sizing: border-box;
  border: 2px solid #ccc;
  -webkit-transition: 0.5s;
  transition: 0.5s;
  outline: none;
  color: #212529;
}

input[type="file"]:focus {
  border: 3px solid #555;
}

/* download */
.download-files{
  display: flex;
  gap: 40px;
  margin-top: 20px;
  justify-content: center;
}
button {
  height: 50px;
  border-radius: 10px;
  background-color: #009688;
  color: #fff;
  padding: 10px 20px;
  text-decoration: none;
  font-size: 20px;
  font-family: "Open Sans", sans-serif;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;

}

#downimg {
  width: 40px;
  height: 40px;
  margin: 10px;
  border-radius: 50%;
  border: 2px solid #fff;
  cursor: pointer;
  transition: 0.5s;
  -webkit-user-drag: none;
}

#uping {
  background-color: #fff;
  width: 40px;
  height: 40px;
  margin: 10px;
  border-radius: 50%;
  border: 0px solid #fff;
  cursor: pointer;
  transition: 0.5s;
  /* avoid image draggable or selectable */
  -webkit-user-drag: none;
  user-select: none;

}

h2 {
  font-family: "Open Sans", sans-serif;
  font-size: 30px;
  color: #212529;
  /* background-color: #ceff89; */
  border-color: #212529;
  border-radius: 10px;
  padding: 10px 20px;
  text-align: center;
  margin-bottom: 0px;
}

p {
  font-family: "Open Sans", sans-serif;
  font-size: 20px;
  color: #212529;
  border-color: #212529;
  border-radius: 10px;
  /* padding: 10px 20px; */
  text-align: center;
  font-weight: 700;
}

#showunique {
  width: 200px;
  font-family: "Open Sans", sans-serif;
  font-size: 50px;
  color: #212529;
  background-color: #ceff89;
  border-color: #212529;
  border-radius: 10px;
  padding: 10px 20px;
  text-align: center;
}

#showunique:hover {
  background-color: #212529;
  color: #ceff89;
  border-color: #212529;
  border-radius: 10px;
  padding: 10px 20px;
  text-align: center;
}

#ShowUniqueID {
  width: max-content;
  margin-top: 10px;
  text-align: center;
}

#footer {
  text-align: center;
  font-family: "Open Sans", sans-serif;
  font-size: 20px;
  color: #212529;
  border-color: #212529;
  border-radius: 10px;
  text-align: center;
  margin-top: 100px;

}

#note {
  font-family: "Open Sans", sans-serif;
  font-size: 10px;
  color: #212529;
  border-color: #212529;
  border-radius: 10px;
  text-align: center;
}

.Drop-here{
  width: 70%;
  height: 80vh;
  border: 2px dashed #ccc;
  border-radius: 10px;
  background-color: #fff;
  color: #212529;
  font-family: "Open Sans", sans-serif;
  font-size: 20px;
  text-align: center;
  padding: 10px 20px;
  cursor: pointer;
  transition: 0.5s;
  position: absolute;
  top: 0;
  margin: auto;
  margin-top: 20px;
  margin-bottom: 20px;
  z-index: 2;
  margin-left:12%;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0.8;
  display:none;
}

.all{
  margin-top: 20px;
}

@media only screen and (max-width: 768px) {
  .card {
    width: 95%;
  }
  .header {
    flex-direction: column;
    text-align: center;
  }
  .logo {
    position: static;
    margin-bottom: 10px;
  }
  h1 {
    font-size: 30px;
    margin-top: 10px;
  }
  .upload-files, .download-files {
    flex-direction: column;
    gap: 20px;
    align-items: center;
  }
  input[type="text"], input[type="file"] {
    width: 80%;
    margin-left: 0;
  }
  button {
    font-size: 16px;
    padding: 8px 16px;
  }
  h2 {
    font-size: 24px;
  }
  p {
    font-size: 16px;
  }
  .Drop-here {
    width: 90%;
    height: 60vh;
    margin-left: 5%;
    font-size: 16px;
  }
  #footer {
    margin-top: 50px;
    font-size: 16px;
  }
  #note {
    font-size: 12px;
  }
}

@media only screen and (min-width: 769px) and (max-width: 1024px) {
  .card {
    width: 90%;
  }
  .header {
    flex-direction: row;
    justify-content: space-between;
  }
  .logo {
    position: absolute;
    left: 20px;
  }
  h1 {
    font-size: 35px;
  }
  .upload-files, .download-files {
    flex-direction: row;
    gap: 30px;
  }
  input[type="text"], input[type="file"] {
    width: 60%;
  }
  button {
    font-size: 18px;
  }
  h2 {
    font-size: 26px;
  }
  p {
    font-size: 18px;
  }
  .Drop-here {
    width: 80%;
    height: 70vh;
    margin-left: 10%;
  }
  #footer {
    margin-top: 80px;
    font-size: 18px;
  }
  #note {
    font-size: 14px;
  }
}

@media only screen and (min-width: 1025px) {
  .card {
    width: 80%;
  }
  .header {
    flex-direction: row;
    justify-content: center;
  }
  .logo {
    position: absolute;
    left: 0;
  }
  h1 {
    font-size: 40px;
  }
  .upload-files, .download-files {
    flex-direction: row;
    gap: 40px;
  }
  input[type="text"], input[type="file"] {
    width: 50%;
  }
  button {
    font-size: 20px;
  }
  h2 {
    font-size: 30px;
  }
  p {
    font-size: 20px;
  }
  .Drop-here {
    width: 70%;
    height: 80vh;
    margin-left: 15%;
  }
  #footer {
    margin-top: 100px;
    font-size: 20px;
  }
  #note {
    font-size: 16px;
  }
}