/* ===== Devise auth (sign in) ===== */
.auth {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 60vh;
    padding: 8px 0 64px;
}
.auth__card {
    width: 100%;
    max-width: 400px;
    background: var(--cream);
    border: 1px solid var(--border-muted);
    border-radius: 16px;
    padding: 40px 36px;
    box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.45);
}
.auth__title {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--c-plum);
}
.auth__lead {
    margin: 6px 0 0;
    font-size: 0.95rem;
    color: var(--fg-muted);
}
.auth__flash {
    margin-top: 20px;
    padding: 10px 14px;
    font-size: 0.9rem;
    color: var(--c-plum);
    background: hsl(var(--hue) 39% 27% / 0.08);
    border: 1px solid var(--accent-rule);
    border-radius: 10px;
}
.auth__form {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-top: 28px;
}
.auth__field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.auth__label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--c-plum);
}
.auth__input {
    width: 100%;
    padding: 11px 14px;
    font: inherit;
    font-size: 0.95rem;
    color: var(--fg);
    background: #fff;
    border: 1px solid var(--border-muted);
    border-radius: 10px;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.auth__input:focus {
    outline: none;
    border-color: var(--c-plum);
    box-shadow: 0 0 0 3px hsl(var(--hue) 39% 27% / 0.15);
}
.auth__remember {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--fg-muted);
    cursor: pointer;
}
.auth__remember input {
    width: 16px;
    height: 16px;
    accent-color: var(--c-plum);
}
.auth__submit {
    margin-top: 4px;
    padding: 12px 18px;
    font: inherit;
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    background: var(--c-plum);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.15s ease, transform 0.05s ease;
}
.auth__submit:hover {
    background: var(--plum-deep);
}
.auth__submit:active {
    transform: translateY(1px);
}
.auth__links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-muted);
    font-size: 0.9rem;
}
.auth__link {
    color: var(--c-plum);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.auth__link:hover {
    color: var(--plum-deep);
}