/* Giữ lại style cho body */
body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f4f6f9;
}

/* Style chung cho các phần tử */
.screen, .auth-box {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

/* Style chỉ ảnh hưởng đến .auth-box và các phần tử con */
.auth-box {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Style button trong .auth-box */
.auth-box button {
    padding: 0.5rem 1rem;
    background-color: #3498db;
    color: white;
    border: none;
    cursor: pointer;
    margin: 5px;
}
.auth-box button:hover {
    background-color: #1c7fc2;
}

/* Style lỗi trong .auth-box */
.auth-box .error {
    color: red;
    margin-top: 0.5rem;
}
  
  /*** ACCESS KEY UI EFFECTS (wave effect) ***/
  .wave-group {
    position: relative;
    margin-top: 5px;
    margin-bottom: 5px;
  }
  
  .wave-group .input {
    font-size: 16px;
    padding: 10px 10px 10px 5px;
    display: block;
    width: 200px;
    border: none;
    border-bottom: 1px solid #515151;
    background: transparent;
  }
  
  .wave-group .input:focus {
    outline: none;
  }
  
  .wave-group .label {
    color: #999;
    font-size: 18px;
    font-weight: normal;
    position: absolute;
    pointer-events: none;
    left: 5px;
    top: 10px;
    display: flex;
  }
  
  .wave-group .label-char {
    transition: 0.2s ease all;
    transition-delay: calc(var(--index) * .05s);
  }
  
  .wave-group .input:focus ~ label .label-char,
  .wave-group .input:valid ~ label .label-char {
    transform: translateY(-20px);
    font-size: 14px;
    color: #5264AE;
  }
  
  .wave-group .bar {
    position: relative;
    display: block;
    width: 200px;
  }
  
  .wave-group .bar:before,
  .wave-group .bar:after {
    content: '';
    height: 2px;
    width: 0;
    bottom: 1px;
    position: absolute;
    background: #5264AE;
    transition: 0.2s ease all;
  }
  
  .wave-group .bar:before {
    left: 50%;
  }
  
  .wave-group .bar:after {
    right: 50%;
  }
  
  .wave-group .input:focus ~ .bar:before,
  .wave-group .input:focus ~ .bar:after {
    width: 50%;
  }

   /*** WAIT ***/ 
   .hidden {
    display: none;
  }
.pencil {
    display: block;
    width: 10em;
    height: 10em;
  }
  
  .pencil__body1,
  .pencil__body2,
  .pencil__body3,
  .pencil__eraser,
  .pencil__eraser-skew,
  .pencil__point,
  .pencil__rotate,
  .pencil__stroke {
    animation-duration: 3s;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
  }
  
  .pencil__body1,
  .pencil__body2,
  .pencil__body3 {
    transform: rotate(-90deg);
  }
  
  .pencil__body1 {
    animation-name: pencilBody1;
  }
  
  .pencil__body2 {
    animation-name: pencilBody2;
  }
  
  .pencil__body3 {
    animation-name: pencilBody3;
  }
  
  .pencil__eraser {
    animation-name: pencilEraser;
    transform: rotate(-90deg) translate(49px,0);
  }
  
  .pencil__eraser-skew {
    animation-name: pencilEraserSkew;
    animation-timing-function: ease-in-out;
  }
  
  .pencil__point {
    animation-name: pencilPoint;
    transform: rotate(-90deg) translate(49px,-30px);
  }
  
  .pencil__rotate {
    animation-name: pencilRotate;
  }
  
  .pencil__stroke {
    animation-name: pencilStroke;
    transform: translate(100px,100px) rotate(-113deg);
  }
  
  /* Animations */
  @keyframes pencilBody1 {
    from,
      to {
      stroke-dashoffset: 351.86;
      transform: rotate(-90deg);
    }
  
    50% {
      stroke-dashoffset: 150.8;
   /* 3/8 of diameter */
      transform: rotate(-225deg);
    }
  }
  
  @keyframes pencilBody2 {
    from,
      to {
      stroke-dashoffset: 406.84;
      transform: rotate(-90deg);
    }
  
    50% {
      stroke-dashoffset: 174.36;
      transform: rotate(-225deg);
    }
  }
  
  @keyframes pencilBody3 {
    from,
      to {
      stroke-dashoffset: 296.88;
      transform: rotate(-90deg);
    }
  
    50% {
      stroke-dashoffset: 127.23;
      transform: rotate(-225deg);
    }
  }
  
  @keyframes pencilEraser {
    from,
      to {
      transform: rotate(-45deg) translate(49px,0);
    }
  
    50% {
      transform: rotate(0deg) translate(49px,0);
    }
  }
  
  @keyframes pencilEraserSkew {
    from,
      32.5%,
      67.5%,
      to {
      transform: skewX(0);
    }
  
    35%,
      65% {
      transform: skewX(-4deg);
    }
  
    37.5%, 
      62.5% {
      transform: skewX(8deg);
    }
  
    40%,
      45%,
      50%,
      55%,
      60% {
      transform: skewX(-15deg);
    }
  
    42.5%,
      47.5%,
      52.5%,
      57.5% {
      transform: skewX(15deg);
    }
  }
  
  @keyframes pencilPoint {
    from,
      to {
      transform: rotate(-90deg) translate(49px,-30px);
    }
  
    50% {
      transform: rotate(-225deg) translate(49px,-30px);
    }
  }
  
  @keyframes pencilRotate {
    from {
      transform: translate(100px,100px) rotate(0);
    }
  
    to {
      transform: translate(100px,100px) rotate(720deg);
    }
  }
  
  @keyframes pencilStroke {
    from {
      stroke-dashoffset: 439.82;
      transform: translate(100px,100px) rotate(-113deg);
    }
  
    50% {
      stroke-dashoffset: 164.93;
      transform: translate(100px,100px) rotate(-113deg);
    }
  
    75%,
      to {
      stroke-dashoffset: 439.82;
      transform: translate(100px,100px) rotate(112deg);
    }
  }


  .toggle-register {
    margin-top: 10px;
    color: #3498db;
    cursor: pointer;
    text-align: center;
    font-size: 14px;
  }
  
  .toggle-register:hover {
    text-decoration: underline;
  }
  .hidden {
    display: none;
  }