:root {
  --bg-color: #FAFAF9;
  --container-color: #FFFFFF;
  --title-color: #1C1917;
  --btns-color: #0F766E;
  --btn-hover-color: #115E59;
  --font-color: #FFFFFF;
  --btn-disabled-color: #9CA3AF;
  --disabled-font-color: #F3F4F6;
}
@font-face {
  font-family: "Tinos";
  src: url("../fonts/Tinos-Regular.ttf");
}
* {
  font-family: "Tinos";
  margin: 0;
  padding: 0;
}
body {
  display: flex;
  justify-content: center; /* horizontal */
  align-items: center;     /* vertical */
  height: 100vh;
  background-color: var(--bg-color);
}
.container {
  border: none;
  /*width: min(80vw, 300px);*/
  width: min(80vw, 400px);
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-evenly;
  padding: 1rem;
  gap: 1rem;
  background-color: var(--container-color);
  border-radius: 14px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}
.container button {
  width: 100%;
  padding: 1rem;
  background-color: var(--btns-color);
  border: none;
  border-radius: 0.5rem;
  transition: 0.2s;
  box-shadow: 0 6px 14px rgba(0,0,0,0.08);
  color: var(--font-color);
  font-size: clamp(15px, 3.5vw, 20px);
}
.container button:disabled {
  background-color: var(--btn-disabled-color);
  color: var(--disabled-font-color);
  box-shadow: none;
  transform: none;
  scale: 1;
  opacity: 0.85;
}
.container button:disabled:hover {
  background-color: var(--btn-disabled-color);
  scale: 1.03;
  box-shadow: none;
}
.container input, .container select {
  width: 100%;
  padding: 1rem;
  border: none;
  border-radius: 0.5rem;
  transition: 0.3s;
  box-shadow: 0 6px 14px rgba(0,0,0,0.08);
  font-size: clamp(15px, 3.5vw, 20px);
  background-color: var(--container-color); /* same as container */
  color: var(--title-color);               /* text color like the title */
  caret-color: var(--btns-color);          /* cursor color matches button color */
}
.container input:focus, .container select:focus {
  outline: none;
  box-shadow: 0 10px 22px rgba(0,0,0,0.12);
  border: 1px solid var(--btns-color);
  scale: 1.01;
}
.container button:hover{
  background: var(--btn-hover-color);
  scale: 1.03;
  box-shadow: 0 10px 22px rgba(0,0,0,0.12);
}
.container div {
  width: 100%;
  display: flex;
  justify-content: center;
}
.container div h1 {
  text-align: center;
  color: var(--title-color);
  font-size: clamp(25px, 7.3vw, 35px);
}
.container a {
  text-decoration: none;
  color: var(--title-color);
}
.pwd-group {
  width: 100%;
  padding: 0;
  display: flex;
  flex-direction: row;
}
.pwd-group .show-pwd-btn {
  border-bottom-right-radius: 0.5rem;
  border-top-right-radius: 0.5rem;
  border-bottom-left-radius: 0;
  border-top-left-radius: 0;
  width: 25%;
  background-color: #E5E7EB;   /* light gray */
  color: var(--title-color);
  box-shadow: none;
}
.pwd-group .show-pwd-btn:hover {
  background-color: #D1D5DB;
  box-shadow: none;
  scale: 1.01;
}
#grade-lvl {
  color: var(--btn-disabled-color);
}
input::placeholder {
  color: var(--btn-disabled-color);
}
#password, #confirm-password {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}
#pwd-container {
  animation-duration: 0.45s;
  animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  animation-fill-mode: forwards;
  animation-play-state: paused;
  position: absolute; /* important for overlap */
  animation-name: intro;
}
#info-container {
  animation-duration: 0.45s;
  animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  animation-fill-mode: forwards;
  animation-play-state: paused;
  position: absolute; /* important for overlap */
  animation-name: outro;
}
@keyframes intro {
  from {
    transform: translateY(120%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
@keyframes outro {
  from {
    transform: translateY(0);
    opacity: 1;
  }
  to {
    transform: translateY(-120%);
    opacity: 0;
  }
}
@keyframes back_intro {
  from {
    transform: translateY(-120%);
    opacity: 1;
  }
  to {
    transform: translateY(0);
    opacity: 0;
  }
}
@keyframes back_outro {
  from {
    transform: translateY(0);
    opacity: 0;
  }
  to {
    transform: translateY(120%);
    opacity: 1;
  }
}