/* Login standalone — replica el shell de RRHH con paleta azul. */
body.ctb-shell {
    background: var(--fin-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    font-family: var(--fin-font-display);
}
.shell-card {
    background: var(--fin-card);
    border: 1px solid var(--fin-border);
    border-radius: var(--fin-radius);
    padding: 32px 28px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--fin-glow);
    position: relative;
    overflow: hidden;
}
.shell-accent {
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--fin-accent), var(--fin-info));
}
.shell-brand {
    text-align: center;
    margin-bottom: 24px;
}
.shell-brand img {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    margin-bottom: 8px;
}
.shell-brand h1 {
    font-size: 22px;
    margin: 0 0 4px;
    color: var(--fin-ink);
}
.shell-brand p {
    color: var(--fin-ink-mid);
    font-size: 13px;
    margin: 0;
}
.shell-footer {
    text-align: center;
    margin-top: 24px;
    color: var(--fin-ink-mid);
    font-size: 11px;
}
.shell-footer p { margin: 2px 0; }
.theme-toggle {
    position: fixed;
    top: 16px;
    right: 16px;
    background: var(--fin-card);
    border: 1px solid var(--fin-border);
    border-radius: 8px;
    color: var(--fin-ink);
    padding: 8px 12px;
    cursor: pointer;
    z-index: 100;
}