.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.2s ease, background-color 0.25s ease;
    z-index: 1000;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background: var(--accent-strong);
    transform: translateY(-3px);
}

.scroll-to-top:active {
    transform: translateY(-1px);
}

.auth-layout {
    display: grid;
    grid-template-columns: 440px 1fr;
    gap: 0;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.auth-image-section {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 20px;
    position: relative;
    z-index: 2;
}

.auth-image-section img {
    width: 108%;
    height: auto;
    max-width: 440px;
}

.auth-form-section {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.92);
    padding: 36px 36px 36px 72px;
    border-radius: 0 var(--radius) var(--radius) 0;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.08);
    position: relative;
    z-index: 1;
    margin-left: -40px;
}

.auth-form-section h1 {
    margin-bottom: 20px;
}

.auth-form-section .card {
    background: transparent;
    border: none;
    padding: 0;
    box-shadow: none;
}

.auth-form-section form {
    max-width: 100%;
}

.auth-form-section .muted {
    text-align: center;
}

@media (max-width: 768px) {
    .auth-layout {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .auth-image-section {
        display: none;
    }

    .auth-form-section {
        padding: 40px;
        margin-left: 0;
        border-radius: var(--radius);
    }
}