html {  
  scrollbar-gutter: stable;  
}
body {
    background-color: #f8f9fa;
    margin: 0;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 5vh;
    overflow-y: scroll;
}
.container {
    width: 100%;
    max-width: 500px;
    margin: auto;
}
.card-signin {
    background: #fff;
    border: 0;
    border-radius: 1rem;
    box-shadow: 0 0.5rem 1rem 0 rgba(0, 0, 0, 0.1);
    margin-top: 0;
}
.card-body {
    padding: 2.5rem;
}
.img-fluid {
    display: block;
    margin: 0 auto 0.5rem auto;
    max-width: 410px;
    height: auto;
}
.card-title {
    margin-bottom: 1.5rem;
    font-weight: 300;
    font-size: 1.1rem;
    text-align: justify;
    margin-top: 0.5rem;
    color: gray;
}
.form-label-group {
    position: relative;
    margin-bottom: 1.5rem;
}
.form-label-group input {
    width: 100%;
    padding: 0.75rem 1.25rem;
    border-radius: 2rem;
    border: 1px solid #ced4da;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
    background-color: #ffffcc;
}
.form-label-group input::placeholder {
    color: transparent;
}
.form-label-group input:focus {
    border-color: #007bff;
}
.form-label-group label {
    position: absolute;
    top: 0.75rem;
    left: 1.25rem;
    color: #6c757d;
    font-size: 1rem;
    pointer-events: none;
    transition: 0.2s;
    background: transparent;
    padding: 0 0.25rem;
}
.form-label-group input:focus + label,
.form-label-group input:not(:placeholder-shown) + label {
    top: -0.9rem;
    left: 1rem;
    font-size: 0.85rem;
    color: #007bff;
    background: transparent;
}
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    border-radius: 2rem;
    border: 2px solid #007bff;
    background: #fff;
    color: #007bff;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    white-space: nowrap;
}
.btn:hover {
    background: #007bff;
    color: #fff;
}
.text-center {
    text-align: center;
}
.row {
    display: flex;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}
.col {
    flex: 1 0 0%;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.float-end {
    margin-left: auto;
}
.text-decoration-none {
    text-decoration: none;
}
#message-container {  
    color: darkred;  
    font-size: 0.9em;  
    margin-top: 0.5rem;  
    word-wrap: break-word; /* Перенос слов, чтобы не выходило за границы */  
}
@media (max-width: 600px) {
    .container {
        max-width: 98vw;
        padding: 0 5px;
    }
    .card-body {
        padding: 1rem;
    }
    .img-fluid {
        max-width: 90vw;
    }
}