body, html {
    height: 100%;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #007bff, #6610f2);
    font-family: Arial, sans-serif;
    color: #333;
}

.login-container {
    animation: appear 1s ease-out forwards;
    width: 100%;
    max-width: 400px; /* Set a max-width for larger screens */
    padding: 20px;
}

@keyframes appear {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-box {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    text-align: center;
}

.input-group {
    position: relative;
    margin-bottom: 20px;
}

.input-group input {
    width: calc(100% - 20px); /* Account for padding */
    padding: 10px;
    border: 2px solid #007bff;
    border-radius: 5px;
    outline: none; /* Remove the default focus outline */
}

.input-group label {
    position: absolute;
    left: 10px;
    top: 10px;
    transition: all 0.3s ease;
    pointer-events: none;
    color: #007bff;
}

.input-group input:focus + label,
.input-group input:not(:placeholder-shown) + label {
    top: -20px;
    background: white; /* Ensure the label background matches */
    padding: 0 5px; /* Add some padding around the label */
    font-size: 0.75em;
    color: #007bff;
}

button {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 5px;
    background-color: #007bff;
    color: white;
    font-size: 1em;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: darken(#007bff, 10%);
}

@media (max-width: 768px) {
    .login-container {
        padding: 10px;
    }
}
.login-container.success {
    animation: shake 0.5s ease-in-out;
}

.login-container.error {
    animation: shake 0.5s ease-in-out;
}

.login-container.blank {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-10px); }
    20%, 40%, 60%, 80% { transform: translateX(10px); }
}

/* Optional: Different animations or styles for each scenario */
/* For instance, changing background color briefly */
.login-container.success {
    animation: successFlash 0.5s ease-out forwards;
}

.login-container.error, .login-container.blank {
    animation: errorFlash 0.5s ease-out forwards;
}

@keyframes successFlash {
    from { background-color: #fff; }
    to { background-color: #d4edda; } /* Light green flash */
}

@keyframes errorFlash {
    from { background-color: #fff; }
    to { background-color: #f8d7da; } /* Light red flash */
}
.error-message {
    color: #d9534f; /* Bootstrap's `$brand-danger` */
    background-color: #f2dede; /* Light red background */
    border-color: #ebccd1;
    padding: 10px;
    margin-bottom: 20px;
    border-radius: 5px;
    text-align: center;
}

.success-message {
    color: #3c763d; /* Bootstrap's `$brand-success` */
    background-color: #dff0d8; /* Light green background */
    border-color: #d6e9c6;
    padding: 10px;
    margin-bottom: 20px;
    border-radius: 5px;
    text-align: center;
}

/**/
.loader {
  --s: 64px;
  width: var(--s);
  aspect-ratio: 2;
  --_g: #000 90%,#0000;
  background: 
    radial-gradient(farthest-side,var(--_g)) 0   50%/25% 50%,
    radial-gradient(farthest-side at bottom,var(--_g)) 50%  calc(50% - var(--s)/16)/25% 25%,
    radial-gradient(farthest-side at top   ,var(--_g)) 50%  calc(50% + var(--s)/16)/25% 25%,
    radial-gradient(farthest-side at bottom,var(--_g)) 100% calc(50% - var(--s)/16)/25% 25%,
    radial-gradient(farthest-side at top   ,var(--_g)) 100% calc(50% + var(--s)/16)/25% 25%;
  background-repeat: no-repeat;
  animation: l14 1s infinite;
}
@keyframes l14 {
    25%  {background-position:0    50%,50% 0,50% 100%,100% 0,100% 100%}
    50%  {background-position:100% 50%,0   0,0   100%,50%  0,50%  100%}
    75%,
    100% {background-position:100% 50%,0 calc(50% - var(--s)/16),0 calc(50% + var(--s)/16),50% calc(50% - var(--s)/16),50% calc(50% + var(--s)/16)}
}