body {
    background: url('/img/2025-01-24_13.39.00.png') no-repeat center center fixed;
    background-size: cover;
    min-height: 100vh;
}
.main-box {
    background: rgba(255,255,255,0.96);
    border-radius: 0.5rem;
    box-shadow: 0 0.5rem 2rem rgba(0,0,0,0.13);
    padding: 2.5rem 2rem 1.5rem 2rem;
    margin: 6vh auto 0 auto;
    max-width: 420px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}
.main-header {
    text-align: center;
    margin-bottom: 1.5rem;
}
.main-footer {
    margin-top: 2rem;
    padding: 0.75rem 1rem;
    text-align: center;
    font-size: 0.95rem;
    color: #666;
}
.form-label {
    font-weight: 500;
}
.btn-primary {
    font-weight: 500;
    letter-spacing: 0.02em;
}
.alert-info {
    font-size: 0.98rem;
    margin-top: 1rem;
}